Corrosion resistance of EPD nanohydroxyapatite coated 316L stainless steel

被引：25
|
作者：
Assadian, M. [1 ]
Jafari, H. [2 ]
Shahri, S. M. Ghaffari [1 ]
Idris, M. H. [1 ]
Gholampour, B. [1 ]
机构：
[1] Univ Teknol Malaysia, Fac Mech Engn, Dept Mat, Dept Mfg & Ind Engn, Utm Skudai 81310, Kagawa, Malaysia
[2] Shahid Rajaee Teacher Training Univ, Fac Mech Engn, Dept Mat Engn, Tehran 16785136, Iran
来源：
SURFACE ENGINEERING | 2014年 / 30卷 / 11期
关键词：
Medical grade stainless steel 316L; Nanohydroxyapatite coating; Electrophoretic deposition; Corrosion; Sintering; DEPOSITED HYDROXYAPATITE COATINGS; ELECTROPHORETIC DEPOSITION; BEHAVIOR; SS;
D O I：
10.1179/1743294414Y.0000000330
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of nanohydroxyapatite (HA) coating on corrosion resistance of 316L stainless steel was investigated. The stainless steel samples were pretreated in different volume concentrations of H2SO4 solution and were electrophoretically coated for various coating time spans and voltages. The coated samples were sintered in a vacuum furnace at different temperatures to modify the coating structure. The quality and morphology of the pretreated samples and the coating were microscopically characterised, and the compounds presented in the coatings were determined. The electrochemical corrosion test was performed in simulated body fluid to evaluate the coating impact on corrosion behaviour of the samples. The results showed that the deposition of nano-HA using moderate voltage and appropriate time span provides a smooth and almost cracked free coating, improving the corrosion resistance of the samples. Increasing the temperature of sintering modified the HA structure, resulting in the formation of denser coating and enhanced corrosion resistance of the samples.
引用
收藏
页码：806 / 813
页数：8
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