T91铁素体不锈钢在亚硝酸钠溶液中的钝化研究
Total Corrosion Control（2011）
Abstract
采用电化学阻抗(EIS)、塔菲尔曲线(Tafel)研究了T91铁素体不锈钢在常温30度及不同浓度亚硝酸钠溶液中的钝化行为,用酸性CuSO4滴定法检测钝化膜质量。结果表明,T91在pH值为9.5,NaNO2浓度为0.5%时形成的钝化膜在3.5% NaCl溶液中的耐蚀性大大提高。
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Key words
ferritic stainless steel t91,passivating film,corrosion resistance,electrochemical analysis
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