庞艳荣,董小平,陈家熠,王青,梁稀,杨舒羽

• 1:河北大学质量技术监督学院

摘要(Abstract)：

采用声发射技术研究了304不锈钢在0.01和0.05 mol·L-1Na Cl溶液中的腐蚀过程,应用光学显微镜观察了腐蚀前后试样表面形貌。结果表明,0.01和0.05 mol·L-1浓度下,304不锈钢腐蚀产生的声发射起始幅度不同,随时间延长,声发射幅度阶跃,直至达到最终的稳定幅度,这说明随浸泡时间延长,试样腐蚀程度加深。浸泡初期,声发射相对能量较高,声发射相对能量随浸泡时间延长而降低,但仍具有比较明显的相对能量积聚区,0.05 mol·L-1浓度时更为明显,同时其振铃数聚类区多于0.01 mol·L-1。浸泡4 h后,试样表面发生了晶间腐蚀和点蚀。相比0.01 mol·L-1浓度,0.05 mol·L-1下试样表面点蚀数量增多、点蚀孔尺寸增大。

关键词(KeyWords)： 304不锈钢;腐蚀;声发射特征

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51371094);; 河北大学大学生创新创业训练项目(2013068);; 河北省大学生创新创业训练计划(201410075039,201410075084)

作者(Author): 庞艳荣,董小平,陈家熠,王青,梁稀,杨舒羽

DOI: 10.13289/j.issn.1009-6264.2015.02.038

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