陈丰君,杜晓东,郎经纬,周丹,沈健,刘光复

• 1:合肥工业大学材料科学与工程学院

摘要(Abstract)：

利用高温高压反应釜模拟空气压缩机叶片腐蚀环境条件,在FV(520)B不锈钢表面制备H2S腐蚀产物膜,利用XPS、SEM、XRD等分析技术分析硫化膜成分、结构,以研究硫化膜形成和生长机理。结果表明,初始阶段,硫化膜主要为Fe7S8、Fe(1-x)S,其中有较多的二价阳离子空位,硫化膜的不断生长是依靠金属阳离子通过晶格中大量空位向外迁移至气固界面并与离解的S离子反应;随硫化时间的延长膜厚不断增加,最终出现分层:外层成分为Fe7S8、Fe(1-x)S、Ni(1-x)S等,内层成分为少量Fe7S8、Fe(1-x)S、Ni(1-x)S和Cr2S3;内层中Cr2S3抑制Fe、Ni离子向外迁移,但硫化初期阶段Cr2S3的含量很少,这种抑制作用不明显,随着Cr硫化膜层的不断生长,整体硫化膜的生长速度被强烈抑制。

关键词(KeyWords)： 金属腐蚀;压缩机;阳离子空位缺陷;硫化腐蚀

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划(2011CB013402);; 安徽省教育厅产学研合作重点项目(KJ2012A232)

作者(Author): 陈丰君,杜晓东,郎经纬,周丹,沈健,刘光复

DOI: 10.13289/j.issn.1009-6264.2015.06.041

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