金属学报  2012, Vol. 48 Issue (4): 502-507    DOI: 10.3724/SP.J.1037.2011.00489

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温度对Cr26Mo1超纯高铬铁素体不锈钢在3.5%NaCl溶液中耐点蚀性能的影响

魏欣1,2,董俊华1,佟健1,郑志1,柯伟1

1. 中国科学院金属研究所, 沈阳 110016 2. 大连理工大学材料科学与工程学院, 大连 116024

INFLUENCE OF TEMPERATURE ON PITTING CORROSION RESISTANCE OF Cr26Mo1 ULTRA PURE HIGH CHROMIUM FERRITE STAINLESS STEEL IN 3.5%NaCl SOLUTION

WEI Xin1,2, DONG Junhua1, TONG Jian1, ZHENG Zhi1,KE Wei1

1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 2. College of Materials Science and Engineering, Dalian University ofTechnology, Dalian 116024

魏欣,董俊华,佟健,郑志,柯伟. 温度对Cr26Mo1超纯高铬铁素体不锈钢在3.5%NaCl溶液中耐点蚀性能的影响[J]. 金属学报, 2012, 48(4): 502-507.
, , , , . INFLUENCE OF TEMPERATURE ON PITTING CORROSION RESISTANCE OF Cr26Mo1 ULTRA PURE HIGH CHROMIUM FERRITE STAINLESS STEEL IN 3.5%NaCl SOLUTION[J]. Acta Metall Sin, 2012, 48(4): 502-507.

摘要 参考文献 相关文章 Metrics 全文: PDF(665 KB)   摘要: 通过循环极化曲线、Mott--Schottky曲线以及电化学阻抗谱等方法研究了温度对 Cr26Mo1超纯高铬铁素体不锈钢在3.5%NaCl溶液中耐点蚀性能的影响. 结果表明: 随着温度升高, Cr26Mo1超纯高铬铁素体不锈钢的自腐蚀电位降低, 腐蚀电流密度增大, 点蚀电位下降, 钝化膜阻抗降低. Cr26Mo1不锈钢钝化膜的半导体类型和性质在不同温度下发生改变. Cr26Mo1不锈钢发生点蚀的孕育期随着温度的升高而缩短, 点蚀敏感性增加, 已发生点蚀的试样不能够自修复. 关键词 ： 超纯高铬铁素体不锈钢,  钝化膜,  循环极化,  点蚀     Abstract：The remarkable uniform corrosion resistance of ultra pure high chromium ferrite stainless steel in various rigorous corrosive environments is based on the formation of a passive film on its surface. However, it is suspected that this stainless steel was easy to suffer from pitting corrosion. In this work, the influences of temperature on the pitting corrosion resistance of Cr26Mo1 ultra pure high chromium ferrite stainless steel were studied by electrochemical methods such as cyclic polarization curves, Mott-Schottky curves and electrochemical impedance spectroscopy in 3.5%NaCl solution. The results showed that with the increase of the temperature, open-circuit corrosion potential and pitting corrosion potential decreased, corrosion current density increased, the impedance of passive film decreased. The semi-conductive styles and properties of passive film changed at different temperatures. Also, the pregnancy time of pitting shortened and the sensitivity of pitting increased remarkably as the temperature increased. In addition, the cyclic polarization curves indicated that the repassivation of existing pits was more difficult when the potential was swept toward the negative direction. Key words： ultra pure high chromium ferrite stainless steel    passive film    cyclic polarization    pitting corrosion 收稿日期: 2011-07-27      基金资助: 国家自然科学基金资助项目 51071160 作者简介: 魏欣, 男, 1982年生, 博士生 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 董俊华 魏欣 佟健 郑志 柯伟 44.8K 链接本文: https://www.ams.org.cn/CN/10.3724/SP.J.1037.2011.00489      或      https://www.ams.org.cn/CN/Y2012/V48/I4/502 [1] Ilevbare G O, Burstein G T.  Corros Sci, 2003; 45: 1545 [2] Sekine I, Okano C, Yuasa M.  Corros Sci, 1990; 30: 351 [3] Hiraide N.  World Iron Steel, 2004; 6: 33 [4] You X M, Jiang Z H, Li H B, Shen M H, Cao Y.  China Metall,2006; 16(11): 16     (游香米, 姜周华, 李花兵, 申明辉, 曹阳. 中国冶金, 2006; 16(11): 16 ) [5] Latanision R M, Kloppers M J, Bellucci F.  Corrosion, 1992; 48: 229 [6] Kaneko M, Isaaca H S.  Corros Sci, 2002; 44: 1825 [7] Shan Y T, Luo X H, Hu X Q, Liu S.  J Mater Sci Technol, 2011; 27: 352 [8] Ernst P, Newman R C.  Corros Sci, 2007; 49: 3705 [9] Rosenfeld I L, Danilov I S, Oranskaya R N.  J Electrochem Soc,1978; 125: 1728 [10] Stockert L, Hunkeler F, Bohni H.  Corrosion, 1985; 41: 676 [11] Carmezim M J, Simoes A M, Montemor M F, Da C B M.  Corros Sci,2005; 47: 581 [12] Ferreira M G S, Hakiki N E, Goodlet G, Faty S, Simoes A M P, Da C B M. 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