Enhancing general corrosion resistance of biomedical high nitrogen nickel-free stainless steel by water treatment

被引：6
|
作者：
Yang, Yixun [1 ,2 ]
Wang, Qingchuan [1 ]
Li, Jun [1 ,2 ]
Tan, Lili [1 ]
Yang, Ke [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
来源：
MATERIALS LETTERS | 2019年 / 251卷 / 196-200期
基金：
中国国家自然科学基金;
关键词：
Biomaterials; Stainless steels; Water treatment; Corrosion; Chromium enrichment; PITTING CORROSION; IN-VITRO; EIS;
D O I：
10.1016/j.matlet.2019.05.081
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An extremely simple and environmentally friendly water treatment was developed to enhance the general corrosion resistance of biomedical high nitrogen nickel-free stainless steels (HNNFS). After treatment, the corrosion rate of HNNFS could dramatically reduce to 1/20 of the untreated in 37 degrees C 0.9 wt% NaCl solutions. Then the passive film on HNNFS was analyzed by electrochemical impedance spectroscopy (EIS) and X-ray photoelectron spectroscopy (XPS). It was found that Cr enrichment and thickness increase of passive film contributed to the improvement of general corrosion resistance of HNNFS. (C) 2019 Elsevier B.V. All rights reserved.
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页码：196 / 200
页数：5
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