| 晶粒尺寸对Cr-Ni奥氏体不锈钢在硝酸中晶间腐蚀敏感性的影响 |
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| 引用本文： | 王玮,杨钢,赵吉庆,张启富.晶粒尺寸对Cr-Ni奥氏体不锈钢在硝酸中晶间腐蚀敏感性的影响[J].钢铁研究学报,2010,22(1):18-18. |
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| 作者姓名： | 王玮 杨钢 赵吉庆 张启富 |
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| 作者单位： | 1. 中国钢研科技集团公司,北京,100081
2. 北京科技大学材料学院,北京,100083 |
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| 摘 要： | 通过在含400 mg/L Cr6++40%硝酸溶液中浸没试验和电化学试验,发现随晶粒尺寸的减小,Cr-Ni奥氏体不锈钢晶间腐蚀敏感性随之增加,但当晶粒尺寸小于临界晶粒尺寸时,晶间腐蚀敏感性开始降低。过钝化电位数值与晶粒尺寸无直接关系,与材料本身特性有关,极化后的表面腐蚀形貌与浸没试验结果相一致。
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| 关 键 词： | , |
| 收稿时间： | 2008-12-03; |
Influence of Grain Size on Susceptibility of Cr-Ni Austenitic Stainless Steel to Intergranular Attack in Nitric Acid |
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| WANG Wei,YANG Gang,ZHAO Ji-qing,ZHANG Qi-fu.Influence of Grain Size on Susceptibility of Cr-Ni Austenitic Stainless Steel to Intergranular Attack in Nitric Acid[J].Journal of Iron and Steel Research,2010,22(1):18-18. |
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| Authors: | WANG Wei YANG Gang ZHAO Ji-qing ZHANG Qi-fu |
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| Affiliation: | 1.Central Iron and Steel Research Institute;Beijing 100081;China;2.University of Science and Technology Beijing;Beijing 100083;China |
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| Abstract: | To find out the effect of grain size on intergranular corrosion of Cr-Ni austenitic stainless steel,the corrosion behavior of 310L SS has been studied in 40% nitric acid solution containing 400mg/L Cr6+.In immersion test,the susceptibility of Cr-Ni austenitic stainless steel to intergranular attack increases with decreasing the grain size.But when grain size is below the critical dimention,the susceptibility of Cr-Ni austenitic stainless steel to intergranular attack begins to decrease.In electrochemical te... |
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| Keywords: | Cr-Ni austenitic stainless steel nitric acid Cr6+ intergranular corrosion |
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