高强铝合金在大气环境中剥蚀和腐蚀失重的腐蚀因素灰色关联分析  

Grey Relationship Analysis of Effect of Environmental Factors on Exfoliation and Mass Loss for High-strength Aluminum

作　　者：孙霜青[1] 郑弃非[2] 李德富[2] 

机构地区：[1]中国石油大学(华东)物理科学与技术学院,东营257061 [2]北京有色金属研究总院,北京100088

出　　处：《腐蚀科学与防护技术》2012年第2期144-148,共5页Corrosion Science and Protection Technology

基　　金：中国石油大学(华东)校自主创新基金(27R11100-50A)资助

摘　　要：通过在我国6个典型大气试验站长期现场暴露试验获得了2024和7075高强铝合金的剥蚀深度和腐蚀失重数据,并利用灰色关联分析方法,研究了环境因素对高强铝合金剥蚀和腐蚀失重的影响程度.结果表明,影响高强铝合金剥蚀和腐蚀失重的主要因素并不相同.影响2024和7075剥蚀最主要的污染物因素均为海盐粒子、HCl和H_2S,而最主要的气象因素均为80%RH以上时数、70%RH以上时数和平均RH等.影响2024和7075型材腐蚀失重的最主要污染物因素为SO_2、海盐粒子和HCl,而气象因素是80%RH以上时数.Exfoliation depth and mass loss for 2024 and 7075 were measured after long-term field exposure in typical atmospheres of six test sits in China.By gray relation analysis,the relationship between environmental factors and exfoliation depth or mass loss was investigated. The result shows that sea-salt particles,HCl and H_2S are the main pollutants factors for the exfoliation of 2024 and 7075.The time of RH80%,the time of RH70%and average RH are the main climatic factors for the exfoliation of them.While for the mass loss of 2024 and 7075,SO_2, sea-salt particles,and HCl are three main pollutants factors.The time of RH80%is the main climatic factor.

关 键 词：大气腐蚀 高强铝合金 剥蚀 腐蚀失重 灰色关联 

分 类 号：TG172.3[金属学及工艺—金属表面处理]