| 445M铁素体不锈钢缝隙腐蚀性能的研究 |
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| 引用本文： | 顾玥,詹肇麟,荣凡. 445M铁素体不锈钢缝隙腐蚀性能的研究[J]. 特殊钢, 2011, 32(3): 65-67 |
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| 作者姓名： | 顾玥 詹肇麟 荣凡 |
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| 作者单位： | 1昆明理工大学，昆明650093 ； 2钢铁研究总院，北京100081 |
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| 基金项目： | 国家科技部支撑计划项目资助(2007BAES1B01) |
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| 摘 要： | 研究了445M铁素体不锈钢(%:0.004～0.005C、22.24～22.29Cr、1.10～1.65Mo、0.015～0.016P、0.003～0.004S、0.012～0.016N、0.22～0.38Ti)和316L奥氏体不锈钢(%:0.022C、16.80Cr、10.19Ni、2.02Mo、0.025P、0.001S、0.046N)在40～60℃氯离子浓度(250～5 000)×10-6的氯化钠溶液的缝隙腐蚀性能。结果表明,445M铁素体不锈钢的耐缝隙腐蚀性能优于316L奥氏体不锈钢;当445M钢中的Mo含量由1.10%提高至1.65%时,钢的耐缝隙腐蚀性能明显提高,表明点蚀当量Cr+3.3Mo是衡量不锈钢耐点蚀和耐缝隙腐蚀的重要指标。
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| 关 键 词： | 445M铁素体不锈钢 缝隙腐蚀 点蚀当量 |
| 收稿时间： | 2010-12-15 |
A Study on Crevice Corrosion Performance of 445M Ferrite Stainless Steel |
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| Gu Yue,Zhan Zhaolin,Rong Fan. A Study on Crevice Corrosion Performance of 445M Ferrite Stainless Steel[J]. Special Steel, 2011, 32(3): 65-67 |
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| Authors: | Gu Yue Zhan Zhaolin Rong Fan |
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| Affiliation: | 1 Kunming University of Science and Technology, Kunming 650093 ；2 Central Iron and Steel Research Institute, Beijing 100081 |
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| Abstract: | The crevice corrosion performance of 445M ferrite stainless steel（%:0.004～0.005C,22.4～22.29Cr, 1.10～1.65Mo,0.015～0.016P,0.003～0.004S,0.012～0.016N,0.22～0.38Ti） and 316L austenite stainless steel （%:0.022C,16.80Cr,10.19Ni,2.02Mo,0.025P,0.001S,0.046N） in sodium chloride solution with chlorion concentration （250～5 000）×10-6 at 40～60℃has been studied.Results show that the crevice corrosion resistance of 445M steel is better than that of 316L steel;and with increasing the Mo content in 445M steel from 1.10%to 1.65%,the crevice corrosion resistance of steel obviously increases,it indicated that the pitting corrosion resistance equivalent- Cr +3.3Mo is an important index to measure the pitting and crevice corrosion resistance of stainless steels. |
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| Keywords: | 445M Ferrite Stainless Steel Crevice Corrosion Pitting Corrosion Resistance Equivalent |
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