于明飞,向嵩,马国强,石维,余稳,冀宣名

• 1:贵州大学材料与冶金学院
• 2:贵州省材料结构与强度重点实验室
• 3:贵州大学高性能金属结构材料与制造技术国家地方联合工程实验室

摘要(Abstract)：

采用动电位极化曲线和电化学阻抗谱(EIS)研究了超级奥氏体不锈钢904L在不同的高温高浓度硫酸中的腐蚀行为。结果表明:随着温度的升高,904L在浓度89 mass% H_2SO_4中耐蚀性逐渐降低,120℃时出现了负阻抗,由活化转为钝化;随着硫酸浓度的升高,904L在温度为60℃硫酸溶液中腐蚀速率先减小后增大,最后又减小,在浓度为60 mass%的硫酸溶液中出现极小值,在浓度为80 mass%硫酸溶液中出现极大值,在高浓度的硫酸溶液中904L更容易发生自钝化。

关键词(KeyWords)： 904L不锈钢;腐蚀行为;浓硫酸;极化曲线;电化学阻抗谱

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51661006,51361004,51774103);; 贵州省百层次创新型人才项目(20164014);; 贵州省科技计划项目(20142003,20175656);; 贵州省创新群体重大项目(2016021)

作者(Author): 于明飞,向嵩,马国强,石维,余稳,冀宣名

DOI: 10.13289/j.issn.1009-6264.2017-0499

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