| 409L和430铁素体不锈钢耐局部腐蚀性能 |
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| 引用本文： | 杨瑞成,毕海娟,牛绍蕊,靳塞特,申鹏.409L和430铁素体不锈钢耐局部腐蚀性能[J].北京科技大学学报,2011,33(4):428-433. |
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| 作者姓名： | 杨瑞成 毕海娟 牛绍蕊 靳塞特 申鹏 |
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| 作者单位： | 兰州理工大学甘肃省有色金属新材料重点实验室;兰州理工大学有色金属合金及加工教育部重点实验室; |
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| 基金项目： | 甘肃省有色金属新材料重点实验室开放基金资助项目(No.SKL05011) |
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| 摘 要： | 采用电化学测试技术与化学浸泡实验相结合,对比研究了409L和430铁素体不锈钢热轧板材耐点蚀和耐晶间腐蚀的能力.结果表明:409L不锈钢的击穿电位与保护电位的差小、钝化膜的修复能力较强,表现为小尺度的浅点蚀孔;430不锈钢的击穿电位较高,耐点蚀能力高于409L不锈钢,但430不锈钢热轧态的条带组织有明显的腐蚀微电池效应,表现为比较严重的全面腐蚀;409L不锈钢含Cr量低,且其热轧态未经过稳定化处理,使得409L不锈钢耐晶间腐蚀能力劣于430不锈钢.经微观分析:409L不锈钢为沿着基体等轴晶界的典型晶间腐蚀形貌特征,而430不锈钢在轧向碳化物(M23C6)与基体的相界面上呈现分层腐蚀痕迹.
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| 关 键 词： | 不锈钢 腐蚀 点蚀 阳极极化 电化学性能 |
Localized corrosion resistance of 409 L and 430 ferritic stainless steels |
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| YANG Rui-cheng,BI Hai-juan,NIU Shao-rui,JIN Sai-te,SHEN Peng.Localized corrosion resistance of 409 L and 430 ferritic stainless steels[J].Journal of University of Science and Technology Beijing,2011,33(4):428-433. |
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| Authors: | YANG Rui-cheng BI Hai-juan NIU Shao-rui JIN Sai-te SHEN Peng |
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| Institution: | YANG Rui-cheng1,2),BI Hai-juan1),NIU Shao-rui1),JIN Sai-te1),SHEN Peng1) 1) State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology,Lanzhou 730050,China 2) Key Laboratory of The Ministry of Education of China for Non-ferrous Metal Alloys,China |
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| Abstract: | The pitting corrosion and intergranular corrosion resistance performances of 409 L and 430 hot-rolling plates were contrastively investigated by using electrochemical measurements and chemical immersion tests.The results show that the difference between breakdown potential and protection potential of 409 L stainless steel is little,and the restorability of the passive film is strong with small-scale shallow pits.The pitting corrosion resistance of 430 stainless steel is better than that of 409 L stainless s... |
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| Keywords: | stainless steel corrosion pitting anodic polarization electrochemical properties |
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