作者
Afrooz Latifi, Mohammad Imani, Mohammad Taghi Khorasani, Morteza Daliri Joupari
发表日期
2013/4/25
期刊
Surface and Coatings Technology
卷号
221
页码范围
1-12
出版商
Elsevier
简介
Although stainless steel is a widely used material for biomedical applications, its surface properties for long term application are still a serious concern. Here, chemical surface treatment by electropolishing and acid dipping is used for improving surface properties of 316L stainless steel to provide a homogenous, smooth and corrosion resistant surface with high biocompatibility profile. X-ray photoelectron spectroscopy (XPS) was performed to trace surface chemical composition before and after chemical treatment. Surface enrichment of corrosion resistant compounds was shown by XPS. Corrosion behavior of the treated samples was evaluated by electrochemical analysis. Surface energy was also studied through contact angle measurements. The roughness of the surface was traced by atomic force microscopy (AFM) and scanning electron microscopy (SEM) techniques. The lowest roughness (Sa: 0.96±0.29nm …
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