Corrosion Behavior and Biocompatibility of Hydroxyapatite Coating on H2SO4 Passivated 316L SS for Human Body Implant
来源期刊：Acta Metallurgica Sinica2013年第4期
论文作者：Saied Nouri Khorasani Mohammad Hossein Fathi
文章页码：409 - 415
摘 要：The aim of this studies at simultaneous improvement of the corrosion behavior and biocompatibility of metallic implant and bone Osseointegration simultaneously.Stainless steel 316L（SS） was used as metallic substrate and after surface treatment with 15 vol.% sulfuric acid,it was coated with hydroxyapatite coating employing plasma-spraying process.Structure characterization techniques including XRD,SEM and EDX were also utilized to investigate the microstructure,morphology,and crystallinity of the coating.Electrochemical potentiodynamic tests were performed in two types of physiological solutions in order to determine and compare the corrosion resistance behavior of the coated and uncoated specimens as an indication of biocompatibility.The results indicate that the surface treatment and hydroxyapatite coating improve the corrosion resistance behavior of SS.The corrosion current density of the surface treated and the hydroxyapatite coated SS also decrease.These also show that surface treated and hydroxyapatite coated SS can be used as human body implants with the goals of corrosion resistance improvement（biocompatibility） and bone osseointegration.
Saied Nouri Khorasani2，Mohammad Hossein Fathi3
2. Department of Chemical Engineering,Isfahan University of Technology3. Department of Materials Engineering,Isfahan University of Technology
摘 要：The aim of this studies at simultaneous improvement of the corrosion behavior and biocompatibility of metallic implant and bone Osseointegration simultaneously.Stainless steel 316L（SS） was used as metallic substrate and after surface treatment with 15 vol.% sulfuric acid,it was coated with hydroxyapatite coating employing plasma-spraying process.Structure characterization techniques including XRD,SEM and EDX were also utilized to investigate the microstructure,morphology,and crystallinity of the coating.Electrochemical potentiodynamic tests were performed in two types of physiological solutions in order to determine and compare the corrosion resistance behavior of the coated and uncoated specimens as an indication of biocompatibility.The results indicate that the surface treatment and hydroxyapatite coating improve the corrosion resistance behavior of SS.The corrosion current density of the surface treated and the hydroxyapatite coated SS also decrease.These also show that surface treated and hydroxyapatite coated SS can be used as human body implants with the goals of corrosion resistance improvement（biocompatibility） and bone osseointegration.
关键词：
