135 results match your criteria Advanced Composite Materials[Journal]


Interfacial Microstructure in W/2024Al Composite and Inhibition of W-Al Direct Reaction by CeO₂ Doping: Formation and Crystallization of Al-Ce-Cu-W Amorphous Layers.

Materials (Basel) 2019 Apr 4;12(7). Epub 2019 Apr 4.

Advanced Electronic Materials Institute, GRIMAT Engineering Institute Co., Ltd., No.11 Xingkedongda Street., Beijing 101407, China.

In this work, interfacial microstructure in W/2024Al composite and inhibition of the W-Al direct reaction by CeO₂ doping were investigated. The composites were prepared through powder sintering, and after preparation the composites were treated by annealing at 823 K. For the prepared W/2024Al composite, a multi-phase thin layer composed of WAl and WAl₅ compounds were formed at the interface due to the W-Al direct reaction. Read More

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http://dx.doi.org/10.3390/ma12071117DOI Listing

Performance Investigation on Different Designs of Superhydrophobic Surface Texture for Composite Insulator.

Materials (Basel) 2019 Apr 10;12(7). Epub 2019 Apr 10.

FSI, FEPS, University of Southampton, Southampton SO17 1BJ, UK.

To investigate the superhydrophobic properties of different surface textures, nine designs of textures with micro-nanostructures were produced successfully using the laser engraving technique on the surfaces of composite insulator umbrella skirt samples made of silicon rubber. The optimal parameters of the texture designs to give rise to the best hydrophobicity were determined. The surface morphology, abrasion resistance, corrosion resistance, self-cleaning and antifouling property of the different textured surfaces as well as water droplets rolling on the textured surfaces were studied experimentally using a contact angle meter, scanning electron microscope, three-dimensional topography meter and high-speed camera system. Read More

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http://dx.doi.org/10.3390/ma12071164DOI Listing
April 2019
3 Reads
2.651 Impact Factor

Microstructure and Thermal Insulation Property of Silica Composite Aerogel.

Materials (Basel) 2019 Mar 26;12(6). Epub 2019 Mar 26.

National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, and Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China.

Tetraethyl orthosilicate was selected as a matrix of heat insulating materials among three silanes, and an anti-infrared radiation fiber was chosen as a reinforcement for silica aerogel insulation composite. The silica aerogel was combined well and evenly distributed in the anti-infrared radiation fiber. The heat insulation effect was improved with the increase in thickness of the aerogel insulation material, as determined by the self-made aerospace insulation material insulation performance test equipment. Read More

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http://dx.doi.org/10.3390/ma12060993DOI Listing

An Approach to the Uniform Dispersion of Graphene Nanosheets in Powder Metallurgy Nickel-Based Superalloy.

Materials (Basel) 2019 Mar 24;12(6). Epub 2019 Mar 24.

School of Materials Science and Engineering, Beihang University, Beijing 100191, China.

In this paper, a wet-chemical based method was adopted to acquire the uniform dispersion of graphene nanosheets (GNSs) in a powder metallurgy nickel-based superalloy (FGH96) to fabricate a new GNSs reinforced FGH96 metal matrix composite. The surface of the FGH96 powder was modified using a hydrophilic surfactant named polyvinyl alcohol (PVA), which has good wettability and strong hydrogen bonding between the ⁻OH groups of PVA and oxygen groups of GNSs such as ⁻COOH, ⁻CHO, and ⁻OH. It was shown that the GNSs displayed much better dispersion uniformity on the PVA modified FGH96 powder than the unmodified one. Read More

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http://dx.doi.org/10.3390/ma12060974DOI Listing

Synthesis of Nanocrystalline AZ91 Magnesium Alloy Dispersed with 15 vol.% Submicron SiC Particles by Mechanical Milling.

Materials (Basel) 2019 Mar 18;12(6). Epub 2019 Mar 18.

Shandong Key Laboratory for High Strength Lightweight Metallic Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China.

The development of a magnesium matrix composite with a high content of dispersions using conventional liquid-phase process is a great challenge, especially for nanometer/submicron particles. In this work, mechanical milling was employed to prepare nanocrystalline AZ91 dispersed with 15 vol.% submicron SiC particles (SiCp/AZ91). Read More

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http://dx.doi.org/10.3390/ma12060901DOI Listing
March 2019
1 Read

Development and Testing of Advanced Cork Composite Sandwiches for Energy-Absorbing Structures.

Materials (Basel) 2019 Feb 27;12(5). Epub 2019 Feb 27.

TEMA: Centre for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.

Cork is a sustainable material with remarkable properties. In addition to its main application as wine stoppers, it has also been employed as a sound and thermal insulator in facades, building roofs, aeronautical applications, and, more recently, in impact energy absorption systems. In its natural form, cork is mainly used in wine stopper manufacturing, but for other applications, cork compounds are usually employed, which makes it possible to manufacture complex geometries with nearly isotropic behavior. Read More

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http://dx.doi.org/10.3390/ma12050697DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6427594PMC
February 2019

The Comparison in the Microstructure and Mechanical Properties between AZ91 Alloy and Nano-SiCp/AZ91 Composite Processed by Multi-Pass Forging Under Varying Passes and Temperatures.

Materials (Basel) 2019 Feb 20;12(4). Epub 2019 Feb 20.

School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.

In this study, both AZ91 alloy and nano-SiCp/AZ91 composite were subjected to multi-pass forging under varying passes and temperatures. The microstructure and mechanical properties of the alloy were compared with its composite. After six passes of multi-pass forging at a constant temperature of 400 ℃, complete recrystallization occurred in both the AZ91 alloy and composite. Read More

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http://dx.doi.org/10.3390/ma12040625DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416730PMC
February 2019

Lightweight Porous Glass Composite Materials Based on Capillary Suspensions.

Materials (Basel) 2019 Feb 19;12(4). Epub 2019 Feb 19.

Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200f, 3001 Leuven, Belgium.

In this article, we present a simple, advanced method to produce lightweight tailor-made materials based on capillary suspensions that are made from locally bonded hollow glass spheres with a high total porosity in the range of 70% at apparent densities of 200 kg/m³, having a compressive strength of 0.6 MPa. The amount of added liquid and the particle surface treatment determine the network structure in the pastes and the resulting microstructure of the porous material in a straightforward manner. Read More

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http://dx.doi.org/10.3390/ma12040619DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416639PMC
February 2019

Experimental Analysis on the Influence and Optimization of μ-RUM Parameters in Machining Alumina Bioceramic.

Materials (Basel) 2019 Feb 18;12(4). Epub 2019 Feb 18.

Industrial Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia.

Fabrication of precise micro-features in bioceramic materials is still a challenging task. This is because of the inherent properties of bioceramics, such as low fracture toughness, high hardness, and brittleness. This paper places an emphasis on investigating the multi-objective optimization of fabrication of microchannels in alumina (Al₂O₃) bioceramics by using rotary ultrasonic machining (RUM). Read More

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http://dx.doi.org/10.3390/ma12040616DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416584PMC
February 2019

Ag₂S Quantum Dots Based on Flower-like SnS₂ as Matrix and Enhanced Photocatalytic Degradation.

Materials (Basel) 2019 Feb 15;12(4). Epub 2019 Feb 15.

School of Science, Lanzhou University of Technology, Lanzhou 730050, China.

Ag₂S quantum dots were dispersed on the surface of SnS₂ nanoflowers forming a heterojunction via in-situ ion exchange to improve photocatalytic degradation of RhB. All samples exhibit the hexagonal wurtzite structure. The size of Ag₂S@SnS₂ composites are ~ 1. Read More

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http://dx.doi.org/10.3390/ma12040582DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416614PMC
February 2019

Numerical Analysis of Curing Residual Stress and Deformation in Thermosetting Composite Laminates with Comparison between Different Constitutive Models.

Materials (Basel) 2019 Feb 14;12(4). Epub 2019 Feb 14.

School of Mechanical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.

A multi-physics coupling numerical model of the curing process is proposed for the thermosetting resin composites in this paper, and the modified "cure hardening instantaneously linear elastic (CHILE)" model and viscoelastic model are adopted to forecast residual stress and deformation during the curing process. The thermophysical properties of both models are evolved in line with temperature and degree of cure (DOC). Accordingly, the numerical simulation results are improved to be more accurate. Read More

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http://dx.doi.org/10.3390/ma12040572DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416736PMC
February 2019
1 Read

Effect of Temperature and Water Absorption on Low-Velocity Impact Damage of Composites with Multi-Layer Structured Flax Fiber.

Materials (Basel) 2019 Feb 1;12(3). Epub 2019 Feb 1.

School of Aerospace Engineering and Applied Mechanics, Tongji University, 1239 Siping Road, Shanghai 200092, China.

Temperature and moisture can cause degradation to the impact properties of plant fiber-based composites owing to their complex chemical composition and multi-layer microstructure. This study focused on experimental characterization of the effect of important influencing factors, including manufacturing process temperature, exposure temperature, and water absorption, on the impact damage threshold and damage mechanisms of flax fiber reinforced composites. Firstly, serious reduction on the impact damage threshold and damage resistance was observed, this indicated excessive temperature can cause chemical decomposition and structural damage to flax fiber. Read More

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http://dx.doi.org/10.3390/ma12030453DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6385054PMC
February 2019
2.651 Impact Factor

Uniaxial Tensile Behavior of Carbon Textile Reinforced Mortar.

Materials (Basel) 2019 Jan 25;12(3). Epub 2019 Jan 25.

Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong, China.

This paper investigates the effects of the reinforcement ratio, volume fraction of steel fibers, and prestressing on the uniaxial tensile behavior of carbon textile reinforced mortar (CTRM) through uniaxial tensile tests. The results show that the tensile strength of CTRM specimens increases with the reinforcement ratio, however the textile⁻matrix bond strength becomes weaker and debonding can occur. Short steel fibers are able to improve the mechanical properties of the entire CTRM composite and provide additional "shear resistant ability" to enhance the textile⁻ matrix bond strength, resulting in finer cracks with smaller spacing and width. Read More

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http://dx.doi.org/10.3390/ma12030374DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6384734PMC
January 2019

Microstructure and Enhanced Properties of Copper-Vanadium Nanocomposites Obtained by Powder Metallurgy.

Materials (Basel) 2019 Jan 22;12(3). Epub 2019 Jan 22.

Key Laboratory of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, No. 2055 Yanan Street, Changchun 130012, China.

Cu-2.4 wt.%V nanocomposite has been prepared by mechanical alloy and vacuum hot-pressed sintering technology. Read More

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http://dx.doi.org/10.3390/ma12030339DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6384610PMC
January 2019

Tribological Behavior of Titanium Alloy Treated by Nitriding and Surface Texturing Composite Technology.

Materials (Basel) 2019 Jan 18;12(2). Epub 2019 Jan 18.

School of Engineering and Technology, China University of Geosciences, Beijing 100083, China.

This study experimentally investigated the effect of surface textures on the tribological mechanism of nitrided titanium alloy (Ti⁻6Al⁻4V). The titanium alloy samples were nitrided at various temperatures ranging from 750 to 950 °C for 10 h in a plasma nitriding furnace. Then, surface textures were fabricated on the polished titanium alloy and plasma nitrided samples by laser process system. Read More

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http://dx.doi.org/10.3390/ma12020301DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6356806PMC
January 2019
1 Read

Process-Induced Stress and Deformation of Variable-Stiffness Composite Cylinders during Curing.

Materials (Basel) 2019 Jan 14;12(2). Epub 2019 Jan 14.

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, Hubei, China.

Predicting and controlling process-induced deformation of composites during cure can play a significant role in ensuring the accuracy of manufacture and assembly of composite structures. In this paper the parametric investigation on the process-induced stress and deformation of variable-stiffness composite cylinders was presented. The Kamal model was used to simulate the cure kinetic for carbon/ epoxy prepreg. Read More

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http://dx.doi.org/10.3390/ma12020259DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6357047PMC
January 2019

Carbon Nanotubes Enhance the Radiation Resistance of bcc Iron Revealed by Atomistic Study.

Materials (Basel) 2019 Jan 10;12(2). Epub 2019 Jan 10.

School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China.

With extra space, a carbon nanotube (CNT) could serve as an absorber of point defects, including helium interstitials, and outgas the accumulate helium via "nano-chimneys". The radiation resistance of CNT/Fe has still not been fully understood. Herein, we investigated the influence of CNTs on low-energy helium irradiation resistance in CNT/Fe composites by molecular dynamic simulations. Read More

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http://dx.doi.org/10.3390/ma12020217DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6356427PMC
January 2019

Analysis of the Impact Dynamics of Shape Memory Alloy Hybrid Composites for Advanced Applications.

Materials (Basel) 2019 Jan 5;12(1). Epub 2019 Jan 5.

Department of Engineering, University of Campania "Luigi Vanvitelli", 81031 Aversa, Italy.

In this work, the behaviour of thermoplastic composites and Shape Memory Alloy Hybrid Composites (SMAHCs) for aeronautical applications is analysed and compared by means of findings from numerical analyses and experimental tests. At first, experimental tests are performed by using a drop tower facility on both carbon fibre reinforced plastic samples and Carbon Fibre Reinforced Plastic (CFRP) samples hybridized with shape memory alloy materials. The materials properties and the different lower velocity impacts behaviours are simulated and validated by means of numerical models discretized in LS-Dyna explicit solver. Read More

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http://dx.doi.org/10.3390/ma12010153DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337643PMC
January 2019

Synthesis, Nanomechanical Characterization and Biocompatibility of a Chitosan-Graft-Poly(ε-caprolactone) Copolymer for Soft Tissue Regeneration.

Materials (Basel) 2019 Jan 4;12(1). Epub 2019 Jan 4.

Department of Materials Science and Technology, University of Crete, 71003 Heraklion, Greece.

Tissue regeneration necessitates the development of appropriate scaffolds that facilitate cell growth and tissue development by providing a suitable substrate for cell attachment, proliferation, and differentiation. The optimized scaffolds should be biocompatible, biodegradable, and exhibit proper mechanical behavior. In the present study, the nanomechanical behavior of a chitosan--poly(ε-caprolactone) copolymer, in hydrated and dry state, was investigated and compared to those of the individual homopolymers, chitosan (CS) and poly(ε-caprolactone) (PCL). Read More

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http://dx.doi.org/10.3390/ma12010150DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337280PMC
January 2019

Effects on the Mechanical Properties of Nacre-Like Bio-Hybrid Membranes with Inter-Penetrating Petal Structure Based on Magadiite.

Materials (Basel) 2019 Jan 7;12(1). Epub 2019 Jan 7.

Key Laboratory of Polymer Processing Engineering of Ministry of Education, National Engineering Research Center of Novel Equipment for Polymer Processing, School of Mechanical & Automotive Engineering, South China University of Technology, Guangzhou 510640, China.

Rigid biological systems are increasingly becoming a source of inspiration for the fabrication of the advanced functional materials due to their diverse hierarchical structures and remarkable engineering properties. As a bionic biomaterial with a clear layered structure, excellent mechanical properties, and interesting rainbow colors, nacre has become one of the most attractive models for novel artificial materials design. In this research paper, the tough and strong nacre-like bio-hybrid membranes with an interpenetrating petals structure were fabricated from chitosan (CS) and magadiite (MAG) clay nanosheets through the gel-casting self-assembling method. Read More

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http://www.mdpi.com/1996-1944/12/1/173
Publisher Site
http://dx.doi.org/10.3390/ma12010173DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337425PMC
January 2019
5 Reads

Resistance to Helium Bubble Formation in Amorphous SiOC/Crystalline Fe Nanocomposite.

Materials (Basel) 2018 Dec 28;12(1). Epub 2018 Dec 28.

Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68583-0857, USA.

The management of radiation defects and insoluble He atoms represent key challenges for structural materials in existing fission reactors and advanced reactor systems. To examine how crystalline/amorphous interface, together with the amorphous constituents affects radiation tolerance and He management, we studied helium bubble formation in helium ion implanted amorphous silicon oxycarbide (SiOC) and crystalline Fe composites by transmission electron microscopy (TEM). The SiOC/Fe composites were grown via magnetron sputtering with controlled length scale on a surface oxidized Si (100) substrate. Read More

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http://dx.doi.org/10.3390/ma12010093DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337212PMC
December 2018
1 Read

Effect of Hatch Spacing on Melt Pool and As-built Quality During Selective Laser Melting of Stainless Steel: Modeling and Experimental Approaches.

Materials (Basel) 2018 Dec 24;12(1). Epub 2018 Dec 24.

Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China.

In this study, a combined simulation and experimental approach is utilized to investigate the influence of hatch spacing on the microstructure and as-built quality of 316L stainless steel (SS) samples fabricated by selective laser melting (SLM). A three-dimensional finite element model (FEM) is employed to investigate heat transfer and melt pool during the SLM of 316L SS. The phase transformation and variation of the thermo-physical properties of the materials are considered in this model. Read More

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http://www.mdpi.com/1996-1944/12/1/50
Publisher Site
http://dx.doi.org/10.3390/ma12010050DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337478PMC
December 2018
6 Reads

Preparation of High-Performance Carbon Fiber-Reinforced Epoxy Composites by Compression Resin Transfer Molding.

Materials (Basel) 2018 Dec 20;12(1). Epub 2018 Dec 20.

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China.

To satisfy the light weight requirements of vehicles owing to the aggravation of environmental pollution, carbon-fiber (CF)-reinforced epoxy composites have been chosen as a substitute for traditional metal counterparts. Since the current processing methods such as resin transfer molding (RTM) and compression molding (CM) have many limitations, an integrated and optimal molding method needs to be developed. Herein, we prepared high-performance composites by an optimized molding method, namely compression resin transfer molding (CRTM), which combines the traditional RTM and CM selectively and comprehensively. Read More

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http://dx.doi.org/10.3390/ma12010013DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337269PMC
December 2018
1 Read

Bifunction-Integrated Dielectric Nanolayers of Fluoropolymers with Electrowetting Effects.

Materials (Basel) 2018 Dec 5;11(12). Epub 2018 Dec 5.

Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China.

Fluoropolymers play an essential role in electrowetting (EW) systems. However, no fluoropolymer possesses the desirable properties of both hydrophobicity and dielectric strength. In this study, for the first time, we report the integration of two representative fluoropolymers-namely, Teflon AF (AF 1600X) and Cytop (Cytop 809A)-into one bifunctionalized dielectric nanolayer. Read More

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http://www.mdpi.com/1996-1944/11/12/2474
Publisher Site
http://dx.doi.org/10.3390/ma11122474DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6316971PMC
December 2018
9 Reads

Damage of Hygrothermally Conditioned Carbon Epoxy Composites under High-Velocity Impact.

Materials (Basel) 2018 Dec 12;11(12). Epub 2018 Dec 12.

Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics, Wuhan University of Technology, Wuhan 430070, China.

The influence of hygrothermal aging on high-velocity impact damage of carbon fiber-reinforced polymer (CFRP) laminates is investigated. Composite laminate specimens were preconditioned in water at 70 °C. The laminates were subsequently impacted by flat-, sphere-, and cone- ended projectiles with velocities of 45, 68, and 86 m/s. Read More

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http://dx.doi.org/10.3390/ma11122525DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6317049PMC
December 2018

Investigations of the Tribological Performance of A390 Alloy Hybrid Aluminum Matrix Composite.

Materials (Basel) 2018 Dec 12;11(12). Epub 2018 Dec 12.

Mechanical Engineering Department, College of Engineering, King Khalid University, Abha 61413 Asir, Saudi Arabia.

Several challenges stand in the way of the production of metal matrix composites (MMCs) such as higher processing temperatures, particulate mixing, particulate⁻matrix interface bonding issues, and the ability to process into desired geometrical shapes. Although there are many studies showing composites with single particulate reinforcements, studies on composites with multiple reinforcing agents (hybrid composites) are found to be limited. Development of a hybrid particulate composite with optimized mechanical and tribological properties is very significant to suit modern engineering applications. Read More

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http://dx.doi.org/10.3390/ma11122524DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6316934PMC
December 2018
1 Read

Preparation and Characterization of Zeolite/TiO₂ Cement-Based Composites with Excellent Photocatalytic Performance.

Materials (Basel) 2018 Dec 7;11(12). Epub 2018 Dec 7.

Shanghai Construction Group Co., Ltd., Shanghai 200080, China.

A zeolite/TiO₂ composite (ZTC) was applied to prepare a high-quality photocatalytic cement-based material (PCM). The acetone degradation experiment and micro measurements including XRD(X-Ray Diffractometer), SEM-EDS(Scanning Electron Microscope-Energy Dispersive Spectrometer), BET(BET Specific Surface Area Tester), FTIR(Fourier Transform Infrared Spectrometer) were conducted to characterize the photocatalytic efficiency and physicochemical properties of PCM, respectively. Results show that TiO₂ particles disperse on the surface of a PCM homogeneously and provide abundant active sites for photocatalytic reactions. Read More

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http://dx.doi.org/10.3390/ma11122485DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6316990PMC
December 2018

Revealing molecular-level surface redox sites of controllably oxidized black phosphorus nanosheets.

Nat Mater 2019 Feb 10;18(2):156-162. Epub 2018 Dec 10.

School of Chemical Engineering, College of Engineering, Sungkyunkwan University, Suwon, Republic of Korea.

Bulk and two-dimensional black phosphorus are considered to be promising battery materials due to their high theoretical capacities of 2,600 mAh g. However, their rate and cycling capabilities are limited by the intrinsic (de-)alloying mechanism. Here, we demonstrate a unique surface redox molecular-level mechanism of P sites on oxidized black phosphorus nanosheets that are strongly coupled with graphene via strong interlayer bonding. Read More

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http://dx.doi.org/10.1038/s41563-018-0230-2DOI Listing
February 2019
4 Reads

Polyvinyl Alcohol Reinforced Flame-Retardant Polyacrylonitrile Composite Fiber Prepared by Boric Acid Cross-Linking and Phosphorylation.

Materials (Basel) 2018 Nov 27;11(12). Epub 2018 Nov 27.

Key Laboratory of Advanced Textile Composite, Ministry of Education, Tianjin Polytechnic University, 7 Tianjin 30038, China.

To improve the strength and maintain the inherent properties of flame-retardant polyacrylonitrile (FR-PAN) fiber, a commercialized hydrocarbon polymer, i.e., poly (vinyl alcohol) (PVA), used as an enhancement component, was blended with polyacrylonitrile (PAN) spinning dope to fabricate a PVA/PAN composite fiber through wet-spun technology. Read More

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http://www.mdpi.com/1996-1944/11/12/2391
Publisher Site
http://dx.doi.org/10.3390/ma11122391DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6316903PMC
November 2018
13 Reads

Time-Lapse Helical X-ray Computed Tomography (CT) Study of Tensile Fatigue Damage Formation in Composites for Wind Turbine Blades.

Materials (Basel) 2018 Nov 21;11(11). Epub 2018 Nov 21.

Henry Moseley X-ray Imaging Facility, Henry Royce Institute for Advanced Materials, School of Materials, University of Manchester, M13 9PL Manchester, UK.

Understanding the fatigue damage mechanisms in composite materials is of great importance in the wind turbine industry because of the very large number of loading cycles rotor blades undergo during their service life. In this paper, the fatigue damage mechanisms of a non-crimp unidirectional (UD) glass fibre reinforced polymer (GFRP) used in wind turbine blades are characterised by time-lapse ex-situ helical X-ray computed tomography (CT) at different stages through its fatigue life. Our observations validate the hypothesis that off-axis cracking in secondary oriented fibre bundles, the so-called backing bundles, are directly related to fibre fractures in the UD bundles. Read More

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http://www.mdpi.com/1996-1944/11/11/2340
Publisher Site
http://dx.doi.org/10.3390/ma11112340DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6266001PMC
November 2018
10 Reads

Effects of Wet-Pressing and Cross-Linking on the Tensile Properties of Carbon Nanotube Fibers.

Materials (Basel) 2018 Nov 2;11(11). Epub 2018 Nov 2.

Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 37673, Korea.

To increase the strength of carbon nanotube (CNT) fibers (CNTFs), the mean size of voids between bundles of CNTs was reduced by wet-pressing, and the CNTs were cross-linked. Separate and simultaneous physical (roller pressing) and chemical methods (cross-linking) were tested to confirm each method's effects on the CNTF strength. By reducing the fraction of pores, roller pressing decreased the cross-sectional area from 160 μm² to 66 μm² and increased the average load-at-break from 2. Read More

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http://www.mdpi.com/1996-1944/11/11/2170
Publisher Site
http://dx.doi.org/10.3390/ma11112170DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6266003PMC
November 2018
14 Reads

Development of Stiff, Tough and Conductive Composites by the Addition of Graphene Nanoplatelets to Polyethersulfone/Epoxy Composites.

Materials (Basel) 2018 Oct 30;11(11). Epub 2018 Oct 30.

Composite Materials and Structures Center, Michigan State University, East Lansing, MI 48824-1226, USA.

In this study, polyethersulfone (PES) was blended into epoxy resins to improve the fracture toughness of the epoxy resin without loss of mechanical properties, and then two grades of pristine graphene nanoplatelets (GnPs) were separately introduced into the PES/epoxy system to fabricate thermally conductive GnPs/PES/epoxy composites with high toughness as well as high stiffness. It was observed that the addition of GnPs obviously affected the final phase morphology by suppressing the phase separation process of the PES modified epoxy due to the increased viscosity and cure-reaction rate of PES/epoxy. The GnPs with a larger lateral dimension revealed a greater reinforcing effect, and the inclusion of 3 wt % GnPs (~5 μm in diameter) endowed the PES/epoxy matrix with a good thermal conductivity and improved the tensile, flexural, and storage modulus by 27. Read More

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http://www.mdpi.com/1996-1944/11/11/2137
Publisher Site
http://dx.doi.org/10.3390/ma11112137DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6265711PMC
October 2018
1 Read

Artificial, Triple-Layered, Nanomembranous Wound Patch for Potential Diabetic Foot Ulcer Intervention.

Materials (Basel) 2018 Oct 29;11(11). Epub 2018 Oct 29.

Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutics, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2109, South Africa.

The present work aims to electrospin a triple layered wound patch for potential treatment of diabetic foot ulcers (DFU). The patch consisted of poly(acrylic acid) (PAA) as the skin contacting layer, polyvinyl pyrrolidone (PVP) as the middle layer, and polycaprolactone (PCL) as the outermost layer, wherein the PVP layer was loaded in situ with an antibiotic (ciprofloxacin, CFX). Morphology and mechanical properties were investigated using SEM and texture analysis. Read More

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http://www.mdpi.com/1996-1944/11/11/2128
Publisher Site
http://dx.doi.org/10.3390/ma11112128DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6265852PMC
October 2018
2 Reads

Non-Isothermal Crystallization Kinetics of Short Glass Fiber Reinforced Poly (Ether Ether Ketone) Composites.

Materials (Basel) 2018 Oct 25;11(11). Epub 2018 Oct 25.

State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China.

Due to its excellent chemical and temperature resistances, short glass fiber reinforced poly (ether ether ketone) composite (SGF/PEEK) is a promising material for application in automotive lightweight. Processing conditions, such as cooling rate, need to be well controlled to obtain the optimal crystallite morphology of PEEK composites. Thus, in this paper, the non-isothermal crystallization kinetics and melting behavior of SGF/PEEK were investigated by differential scanning calorimetry (DSC) at different cooling rates, and the crystallite sizes were evaluated by the X-ray diffraction technique (XRD). Read More

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http://dx.doi.org/10.3390/ma11112094DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6265906PMC
October 2018

Multifunctional, Polyurethane-Based Foam Composites Reinforced by a Fabric Structure: Preparation, Mechanical, Acoustic, and EMI Shielding Properties.

Materials (Basel) 2018 Oct 25;11(11). Epub 2018 Oct 25.

Department of Chemical Engineering and Materials, Ocean College, Minjiang University, Fuzhou 350108, China.

This study proposes multifunctional, fabric-reinforced composites (MFRCs) based on a bionic design, which are prepared by two-step foaming and a combination of different fabric constructs. MFRCs are evaluated in terms of sound absorption, compression resistance, electromagnetic interference shielding effectiveness (EMI SE), and drop impact, thereby examining the effects of fabric structures. The test results indicate that the enhanced composites have superiority functions when combined with carbon fabric in the upper layer and spacer fabric in the lower layer. Read More

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http://dx.doi.org/10.3390/ma11112085DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6266620PMC
October 2018

Formation Mechanism and Cohesive Energy Analysis of Metal-Coated Graphene Nanocomposites Using In-Situ Co-Reduction Method.

Materials (Basel) 2018 Oct 23;11(11). Epub 2018 Oct 23.

Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK.

Nanocomposite powders based on metal-coated graphene were synthesized using an in-situ co-reduction method in order to improve wettability and interfacial bonding between graphene and metal. Graphene oxide (GO) of 2~3 atomic layers was synthesized using the Hummer's method with graphite as a raw material and then dispersed into a dispersing agent solution mixed with -Methyl pyrrolidone and deionized water to form a homogeneous GO suspension, which was finally added into electroless plating solutions for the reduction process. Copper-coated graphene (Cu@graphene) and nickel-coated graphene (Ni@graphene) were synthesized using this one-step and co-reduction method by mixing salt solutions containing metal ions and GOs into the plating solution. Read More

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http://www.mdpi.com/1996-1944/11/11/2071
Publisher Site
http://dx.doi.org/10.3390/ma11112071DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6265979PMC
October 2018
16 Reads

Development of SiC/PVB Composite Powders for Selective Laser Sintering Additive Manufacturing of SiC.

Materials (Basel) 2018 Oct 17;11(10). Epub 2018 Oct 17.

Department of Materials Science and Engineering and Shenzhen Key Lab for Additive Manufacturing of Advanced Materialas, Southern University of Science and Technology, Nanshan District, Shenzhen 518055, China.

Subsphaeroidal SiC/polymer composite granules with good flowability for additive manufacturing/3D printing of SiC were prepared by ball milling with surface modification using polyvinyl butyral (PVB). PVB adheres to the particle surface of SiC to form a crosslinked network structure and keeps them combined with each other into light aggregates. The effects of PVB on the shape, size, phase composition, distribution and flowability of the polymer-ceramic composite powder were investigated in detail. Read More

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http://dx.doi.org/10.3390/ma11102012DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6213563PMC
October 2018
1 Read

Electrochemical Measurements of Multiwalled Carbon Nanotubes under Different Plasma Treatments.

Materials (Basel) 2018 Oct 7;11(10). Epub 2018 Oct 7.

MIMOS Berhad, Technology Park Malaysia, Kuala Lumpur 57000, Malaysia.

In the present work, we described the post-treatment effects of applying different plasma atmosphere conditions on the electrochemical performances of the multiwalled carbon nanotubes (MWCNTs). For the study, a composite of MWCNTs/Co/Ti was successfully grown on the silicon substrate and then pre-treated with ammonia, oxygen and hydrogen plasma. The composite was characterized by making use of field emission scanning electron microscopy (FESEM) for the surface morphology and Raman spectroscopy for the functionalization. Read More

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http://www.mdpi.com/1996-1944/11/10/1902
Publisher Site
http://dx.doi.org/10.3390/ma11101902DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6213819PMC
October 2018
2 Reads
2.651 Impact Factor

Microstructure, Mechanical Properties and Tribological Properties of NiAlComposites Reinforced by CrMnFeCoNiHigh-Entropy Alloy.

Materials (Basel) 2018 Sep 28;11(10). Epub 2018 Sep 28.

School of materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China.

NiAl-based composites reinforced by CrMnFeCoNi high-entropy alloy (HEA) particles were fabricated by mechanical alloying (MA) and spark plasma sintering (SPS). The microstructure, mechanical, and tribological properties of the NiAl-HEA composites were investigated. Microstructural analyses show that after SPS, the HEA phase homogenously distributed in the NiAl matrix. Read More

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http://dx.doi.org/10.3390/ma11101850DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6212883PMC
September 2018
2.651 Impact Factor

Electromagnetic Shielding by MXene-Graphene-PVDF Composite with Hydrophobic, Lightweight and Flexible Graphene Coated Fabric.

Materials (Basel) 2018 Sep 22;11(10). Epub 2018 Sep 22.

Division of Bio-Nanochemistry, College of Natural Sciences, Wonkwang University, Iksan 570-749, Korea.

MXene and graphene based thin, flexible and low-density composite were prepared by cost effective spray coating and solvent casting method. The fabricated composite was characterized using Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray (EDX). The prepared composites showed hydrophobic nature with higher contact angle of 126°, -43 mN·m wetting energy, -116 mN·m spreading Coefficient and 30 mN·m lowest work of adhesion. Read More

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http://dx.doi.org/10.3390/ma11101803DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6213747PMC
September 2018
5 Reads

Accelerated Curing and Enhanced Material Properties of Conductive Polymer Nanocomposites by Joule Heating.

Materials (Basel) 2018 Sep 19;11(9). Epub 2018 Sep 19.

Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 08826, Korea.

Joule heating is useful for fast and reliable manufacturing of conductive composite materials. In this study, we investigated the influence of Joule heating on curing conditions and material properties of polymer-based conductive composite materials consisting of carbon nanotubes (CNTs) and polydimethylsiloxane (PDMS). We applied different voltages to the CNT nanocomposites to investigate their electrical stabilization, curing temperature, and curing time. Read More

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http://dx.doi.org/10.3390/ma11091775DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6165553PMC
September 2018
1 Read

Advanced Radar Absorbing Ceramic-Based Materials for Multifunctional Applications in Space Environment.

Materials (Basel) 2018 Sep 14;11(9). Epub 2018 Sep 14.

Electric and Energy Engineering (DIAEE), Department of Astronautics, Sapienza University of Rome, 00138 Rome, Italy.

In this review, some results of the experimental activity carried out by the authors on advanced composite materials for space applications are reported. Composites are widely employed in the aerospace industry thanks to their lightweight and advanced thermo-mechanical and electrical properties. A critical issue to tackle using engineered materials for space activities is providing two or more specific functionalities by means of single items/components. Read More

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http://dx.doi.org/10.3390/ma11091730DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6165292PMC
September 2018
1 Read

Core-Shell-Structured Particle Reinforced A356 Matrix Composite Prepared by Powder-Thixoforming: Effect of Reheating Temperature.

Materials (Basel) 2018 Sep 13;11(9). Epub 2018 Sep 13.

State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China.

A novel core-shell-structured Ti-(Al-Si-Ti) particle (Ti-(Al-Si-Ti)) reinforced A356 matrix composite was fabricated by a new method, powder thixoforming, which combines the merits of both powder metallurgy and semisolid thixoforming. The effects of reheating temperature on the microstructure and tensile properties of the resulting composite were investigated. The results indicated that the thickening of the Al-Si-Ti compound shells, with rising the reheating temperature, significantly enhanced the strengthening role, but the fracture and peeling of the shells, at higher than 600 °C, impaired the strengthening effect. Read More

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http://dx.doi.org/10.3390/ma11091718DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164453PMC
September 2018
1 Read

Interlaminar Shear Behavior of Laminated Carbon Fiber Reinforced Plastic from Microscale Strain Distributions Measured by Sampling Moiré Technique.

Materials (Basel) 2018 Sep 11;11(9). Epub 2018 Sep 11.

Department of Mechanical Engineering, Tokyo University of Science, Noda, Chiba 278-8510, Japan.

In this article, the interlaminar shear behavior of a [±45°] laminated carbon fiber reinforced plastic (CFRP) specimen is investigated, by utilizing microscale strain mapping in a wide field of view. A three-point bending device is developed under a laser scanning microscope, and the full-field strain distributions, including normal, shear and principal strains on the cross section of CFRP, in a three-point bending test, are measured using a developed sampling Moiré technique. The microscale shear strain concentrations at interfaces between each two adjacent layers were successfully detected and found to be positive-negative alternately distributed before damage occurrence. Read More

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http://dx.doi.org/10.3390/ma11091684DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164604PMC
September 2018
3 Reads

Creating the Coupled Band Gaps in Piezoelectric Composite Plates by Interconnected Electric Impedance.

Materials (Basel) 2018 Sep 7;11(9). Epub 2018 Sep 7.

Department of Aeronautics, Imperial College London, London SW7 2AZ, UK.

In this paper, we investigate the coupled band gaps created by the locking phenomenon between the electric and flexural waves in piezoelectric composite plates. To do that, the distributed piezoelectric materials should be interconnected via a 'global' electric network rather than the respective 'local' impedance. Once the uncoupled electric wave has the same wavelength and opposite group velocity as the uncoupled flexural wave, the desired coupled band gap emerges. Read More

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http://dx.doi.org/10.3390/ma11091656DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164082PMC
September 2018
7 Reads
2.650 Impact Factor

Unusually Small Thermal Expansion of Ordered Perovskite Oxide CaCu₃Ru₄O with High Conductivity.

Materials (Basel) 2018 Sep 7;11(9). Epub 2018 Sep 7.

National Institute of Advanced Industrial Science and Technology (AIST), Shimo-Shidami, Moriyama-ku, Nagoya 463-8560, Japan.

We measured the coefficient of thermal expansion (CTE) of conducting composite ceramics 30 vol.% CuO-mixed CaCu₃Ru₄O together with CaCu₃Ru₄O and CuO. Although conducting ceramics tend to show higher CTE values than insulators, and its CTE value does not match with other ceramic materials, the CTE of CaCu₃Ru₄O (7⁻9 × 10/K) was as small as those of insulators such as CuO (9 × 10/K), alumina (8 × 10/K), and other insulating perovskite oxides. Read More

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http://dx.doi.org/10.3390/ma11091650DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6163337PMC
September 2018
4 Reads

Semiconductor-Ionic Nanocomposite LaSrMnO-CeSmO Functional Layer for High Performance Low Temperature SOFC.

Materials (Basel) 2018 Aug 28;11(9). Epub 2018 Aug 28.

Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics and Electronic Science, Hubei University; Wuhan 430062, Hubei, China.

A novel composite was synthesized by mixing LaSrMnO (LSM) with CeSmO (SDC) for the functional layer of low temperature solid oxide fuel cell (LT-SOFC). Though LSM, a highly electronic conducting semiconductor, was used in the functional layer, the fuel cell device could reach OCVs higher than 1.0 V without short-circuit problem. Read More

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http://dx.doi.org/10.3390/ma11091549DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164086PMC
August 2018
2 Reads

Facile Fabrication of Dumbbell-Like β-Bi₂O₃/Graphene Nanocomposites and Their Highly Efficient Photocatalytic Activity.

Materials (Basel) 2018 Aug 6;11(8). Epub 2018 Aug 6.

State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China.

β-Bi₂O₃ decorated graphene nanosheets (β-Bi₂O₃/GN) were prepared by a facile solution mixing method. The crystal structure, surface morphology, and photo absorbance properties of the products were characterized by XRD, SEM, and UV-VIS diffuse reflection, respectively. Moreover, the effect of graphene content on photocatalytic activity was systematically investigated, and the results indicated that these composites possessed a high degradation rate of Rhodamine B (RhB), which was three times higher than that of bare β-Bi₂O₃ when graphene content was 1 wt %. Read More

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http://dx.doi.org/10.3390/ma11081359DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6119887PMC
August 2018
1 Read

Micro/Mesoporous Fe₃O₄/Fe-Phthalocyanine Microspheres and Effects of Their Surface Morphology on the Crystallization and Properties of Poly(Arylene Ether Nitrile) Composites.

Materials (Basel) 2018 Aug 5;11(8). Epub 2018 Aug 5.

Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China.

The surface morphology of nanoparticles significantly affects the final properties and interfacial characteristics of their composites. Thus, investigations on the surface morphology of the nanoparticles is essential to fabricate improved nanoparticle-reinforced composites. Fe₃O₄/Fe-phthalocyanine (FePc) hybrid microspheres with micro/mesoporous structures were prepared via a solvothermal process and solvent etching method. Read More

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http://dx.doi.org/10.3390/ma11081356DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6119999PMC
August 2018
4 Reads

Mechanical Milling-Assisted Spark Plasma Sintering of Fine-Grained W-Ni-Mn Alloy.

Materials (Basel) 2018 Jul 31;11(8). Epub 2018 Jul 31.

State Key Laboratory of marine resource utilization in South China Sea, Hainan University, Haikou 570228, China.

Fine-grained W-6Ni-4Mn alloys were fabricated by spark plasma sintering (SPS) using mechanical milling W, Ni and Mn composite powders. The relative density of W-6Ni-4Mn alloy increases from 71.56% to 99. Read More

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http://dx.doi.org/10.3390/ma11081323DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6117905PMC
July 2018
4 Reads