| 硅对含强氧化性离子沸腾硝酸中奥氏体不锈钢耐蚀性的影响 |
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| 引用本文： | 王玮,罗明,张启富.硅对含强氧化性离子沸腾硝酸中奥氏体不锈钢耐蚀性的影响[J].钢铁研究学报,2009,21(8):41-0. |
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| 作者姓名： | 王玮 罗明 张启富 |
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| 作者单位： | 1. 中国钢研科技集团公司新冶高科技集团有限公司,北京,100081
2. 北京科技大学材料学院,北京,100083 |
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| 摘 要： | 超低碳Cr Ni奥氏体不锈钢在含强氧化性离子的硝酸溶液中会发生过钝化腐蚀和晶间腐蚀，而高硅不锈钢在强氧化性浓硝酸中具有优良的耐蚀性。笔者以高纯级000Cr25Ni20和00Cr14Ni14Si4钢作为对比材料，发现在纯稀硝酸中000Cr25Ni20钢具有更优良的耐蚀性，在不同含量的40%沸腾硝酸溶液中，00Cr14Ni14Si4钢可有效抑制过钝化腐蚀，而且不发生晶间腐蚀。
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| 关 键 词： | 硝酸溶液 过钝化腐蚀 晶间腐蚀 高硅奥氏体不锈钢 |
| 收稿时间： | 1900-01-01; |
Corrosion Resistance of Silicon-Containing Austenitic Stainless Steel in Boiling Nitric Acid Containing Run+ |
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| WANG Wei,LUO Ming,ZHANG Qi-fu.Corrosion Resistance of Silicon-Containing Austenitic Stainless Steel in Boiling Nitric Acid Containing Run+[J].Journal of Iron and Steel Research,2009,21(8):41-0. |
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| Authors: | WANG Wei LUO Ming ZHANG Qi-fu |
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| Affiliation: | 1. New Metallurgy Hi??Tech Group Co Ltd, Central Iron and Steel Research Institute, Beijing 100081, China; 2. Shool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | Ultra low carbon austenitic stainless steels have the tendency of transpassive corrosion and intergranular attack in strongly oxidizing nitric acid (concentrated nitric acid, presence of oxidizing species). But silicon containing austenitic stainless steels exhibit very good corrosion resistance in concentrated nitric acid. By contrast corrosion tests, it is found that high purity Cr Ni austenitic stainless steels have better corrosion resistance in pure nitric acid. However in boiling nitric acid containing Run+ ions, Si added to steel decreases weight loss rate by eliminating intergranular corrosion. |
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| Keywords: | HNO3 transpassive corrosion intergranular attack silicon??containing austenitic stainless steel |
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