马丽娜,李建春,范光伟,梁伟,王一德

• 1:太原理工大学材料科学与工程学院
• 2:太原钢铁集团太钢技术中心

摘要(Abstract)：

采用极化曲线和电化学阻抗法,研究了时效处理温度对254SMo奥氏体不锈钢在3.5 g/L的NaCl溶液中电化学腐蚀特性的影响。并借助光学显微镜(OM)、扫描电子显微镜(SEM)和能谱仪(EDS)表征其显微组织,探讨了析出物对腐蚀性能的影响。结果表明,随着试验钢时效温度的升高,腐蚀速率先增大后减小,1000℃速率最大,1050℃速率和800℃相近;析出物先增多后减少,到1050℃时超过了σ相的析出温度,故析出物减少。时效析出的金属间化合物σ相是导致254SMo不锈钢电化学腐蚀性下降的主要因素。

关键词(KeyWords)： 254SMo不锈钢;时效;极化曲线;阻抗;σ相

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51175363,51274149)

作者(Author): 马丽娜,李建春,范光伟,梁伟,王一德

DOI: 10.13289/j.issn.1009-6264.2014.05.018

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