Hydroxyapatite-chitosan (HAp-CS) was coated with 2205 duplex stainless steel (DSS) by utilizing electrophoretic deposition (EPD) technique, enhancing the resistance to corrosion onto DSS. In this study, the corrosion resistance of uncoated and coated samples were evaluated in Ringer's physiological solution by various electrochemical studies. The surface morphology of coatings and porosity were investigated by field emission, scanning electron microscopy (FESEM) test and Image J 1.42q software, respectively. The optimum result for successful coating of DSS was acquired with a coating under condition 30 V for three minutes, were the corrosion's current density (Icoor) at (4.32 μA cm−2).
The objective of this research is to study the effects of HAp-CS coating on the DSS by EPD to improve their biocompatibility and resistance to corrosion.
The purpose of this study is to evaluate the effect of hydroxyapatite-chitosan coating on the corrosion behavior of 2205 duplex stainless steel for biomedical applications. EPD technique was utilized to produce HAp-CS nanocomposite coatings on 2205 DSS substrate. The nanocomposite HAp-CS were successfully deposited on the surface of 2205 DSS with homogenous and less porous structure. The HAp-CS nanocomposite coated on 2205 DSS porosity at 30 Vis 3.21% is less than other coated samples. It is being concluded that the optimum applied voltage for coating of HAp-CS on 2205 DSS is 30 Vfor a period of three minutes. The potentiodynamic polarization results revealed that (HAp-CS)/2205 DSS-30V have lowest corrosion current density value (4.32 μA cm−2). Meanwhile, the cyclic polarization results suggested that (HAp-CS)/2205 DSS-30V shows improvement pitting corrosion resistance after immersion in Ringer’s physiological solution as compared to uncoated 2205 DSS.Prof. Dr. Eng Ali Sabea Hammood, PhD