Biocompatibly Coated 304 Stainless Steel as Superior Corrosion-Resistant Implant Material to 316L Steel

被引：12
作者：
Paul, Subir [1 ]
Mandal, Chandranath [1 ]
机构：
[1] Jadavpur Univ, Dept Met & Mat Engn, Kolkata, India
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2013年 / 22卷 / 10期
关键词：
biomaterials; coatings; corrosion testing; electron microscopy; stainless steels; LASER-SURFACE-TREATMENT; TI-6AL-4V ALLOY; STAINLESS-STEEL; COATINGS; IMPROVEMENT; TITANIUM; BEHAVIOR; TI6AL4V; FILMS;
D O I：
10.1007/s11665-013-0590-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Surface treatments of 304 stainless steel by electro-coating and passivating in few inorganic electrolytes were found to be very effective in drastically reducing the corrosion rate of the material in stimulated body fluid (SBF) by several orders in comparison to that of 316L steel, presently being used for orthopedic implants. Polarization studies of electrodeposited hydroxyl apatite coating on 304 steel showed remarkably improved corrosion current. Cyclic polarization of the material in SBF reflected the broadened passivity region, much lower passive current, and narrower hysteresis loops. Similar effects were also found through the formation of inorganic coatings by passivation in NaF, CaNO3, and calcium phosphate buffer solutions. Surface characterization by XRD showed the peaks of the respective coating crystals. The morphology of the coatings studied by SEM showed a flake-type structure for hydroxyapatite coating and fine spherical-subspherical particles for other coatings.
引用
收藏
页码：3147 / 3154
页数：8
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