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445M铁素体不锈钢缝隙腐蚀性能的研究
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
作者姓名:顾玥  詹肇麟  荣凡
作者单位:1昆明理工大学,昆明650093 ; 2钢铁研究总院,北京100081
基金项目:国家科技部支撑计划项目资助(2007BAES1B01)
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。

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
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
Authors:Gu Yue  Zhan Zhaolin  Rong Fan
Affiliation:1 Kunming University of Science and Technology, Kunming 650093 ;2 Central Iron and Steel Research Institute, Beijing 100081
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.
Keywords:445M Ferrite Stainless Steel  Crevice Corrosion  Pitting Corrosion Resistance Equivalent  
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