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  5. Enhancing General Corrosion Resistance of Biomedical High Nitrogen Nickel-Free Stainless Steel by Ni

Enhancing General Corrosion Resistance of Biomedical High Nitrogen Nickel-Free Stainless Steel by Ni

来源 :金属学报（英文版） | 被引量 : 0次 | 上传用户：zhouqiuhe1
【摘 要】
：
A systematic study of nitric acid passivation was investigated to enhance the general corrosion resistance of biomedical high-nitrogen nickel-free stainless steels (HNSs).After passivation,the corrosion rate of HNS could dramatically reduce to 1/20 of the
【作 者】
：
Yixun Yang Qingchuan Wang Jun Li Lili Tan Ke Yang 
【机 构】
：
Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China;School of Materials
【出 处】
：
金属学报（英文版）
【发表日期】
：
2020年2期
【关键词】
：
Stainless steel Nitric acid passivation General corrosion Passive film 
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A systematic study of nitric acid passivation was investigated to enhance the general corrosion resistance of biomedical high-nitrogen nickel-free stainless steels (HNSs).After passivation,the corrosion rate of HNS could dramatically reduce to 1/20 of the untreated in 37 ℃ 0.9 wt％ NaC1 solutions.Then,the passive film on HNS was analyzed by X-ray photoelectron spectroscopy.It was found that chromium enrichment in the passive film and nitrogen enrichment in the film/metal interface contributed to the improvement in general corrosion resistance of HNS.
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