TA7钛合金耐热不锈钢电偶腐蚀敏感性研究  

Investigation on Galvanic Corrosion Susceptibility of Heat Resistant Stainless Steel Contacted with TA7 Alloy

作　　者：刘双梅[1] 刘道新[1] 樊国福 

机构地区：[1]西北工业大学腐蚀与防护研究室,西安710072 [2]黎阳机械厂,平坝561102

出　　处：《材料工程》2000年第1期17-19,30,共4页Journal of Materials Engineering

基　　金：航空基金

摘　　要：依据航空标准评价了TA7钛合金和1Cr11Ni2W2MoV及Cr17Ni2耐热不锈钢在35%NaCl水溶液中的电偶腐蚀敏感性,研究了试样表面状态对电偶腐蚀行为的影响,探讨了腐蚀机理。结果发现,有关文献中材料的常规接触腐蚀数据不适合于压气机工况下的材料接触相容性设计;航标中的平均电偶电流密度指标不适合作为评价钝性材料接触腐蚀敏感性的判据。The galvanic corrosion susceptibility (GCS) of heat resistant stainless steels 1Cr11Ni2W2MoV and Cr17Ni2 contacted with titanium alloy TA7 in 3 5% NaCl solution was evaluated according to aeronautic criterion The influence of surface conditions on GCS behavior and the GCS mechanism were investigated It is found that the GCS datum reported in literature is not useful for guiding the compatibility design of heat resistant stainless steels and titanium alloy used in compressor The galvanic current density parameter adopted in aeronautic criterion can not be used to evaluate GCS of passivation materials

关 键 词：钛合金 耐热不锈钢 电偶腐蚀 压气机 

分 类 号：TG172.9[金属学及工艺—金属表面处理] TG146.23[金属学及工艺—金属学]