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Electrochemical behavior of passive film on 304 stainless steel and chromaticity inspection method of film quality
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发布时间： 2019-03-11
发布时间：2019-03-11
论文类型：会议论文
发表时间：2012-01-01
收录刊物：CPCI-S
页面范围：161-167
关键字：Stainless steel; Chromaticity; Passive film
摘要：The passive film formed on 304 stainless steel during self-passive in air was characterized by a chromaticity inspection technique, and the stainless steel after chemical passive in HNO3 solution was examined for comparison. The a* value measured by the inspection nonlinearly decreases with prolonging self-passive time, while it is close to zero for the chemical passive sample. Electrochemical behavior of passive film in the 3.5 wt. % NaCl solution reveals that the resistance of passive film from EIS examination decreases with increasing a* value, and Mott-Schottky analysis indicated that both donor and acceptor density in passive film is non-linear correspond to a* value. It is considered that the growth of outer Fe-richen oxide and inner Cr-richen oxide in the passive film is responsible for the measured a* value and its relationship with the electrochemical behavior.

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副教授   博士生导师   硕士生导师

任职 : 院长助理，中国腐蚀与防护学会高温专业委员会委员，中国机械工程学会理化检验分委员会委员，辽宁省化工学会腐蚀与防护专业委员会委员

性别： 男

毕业院校：大连理工大学

学位： 博士

所在单位：材料科学与工程学院

学科：材料学

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