航空铝合金大气腐蚀加速试验研究  

Study on Accelerated Tests for Atmospheric Corrosion of Aeronautical Aluminum Alloy

作　　者：蔡健平[1] 刘明[1] 罗振华[1] 张晓云[1] 陆峰[1] 陶春虎[1] 姚琲[2] 

机构地区：[1]北京航空材料研究院,北京100095 [2]天津大学材料学院,天津300072

出　　处：《材料工程》2004年第12期8-11,15,共5页Journal of Materials Engineering

基　　金：国家重点基础研究发展规划项目(G1999065004)

摘　　要：针对航空铝合金LC4CS的大气腐蚀,采用电化学技术、扫描电子显微镜等方法研究了连续盐雾、周期浸润和综合环境等加速试验。通过户内外试验的比较,对加速试验的模拟性和加速性进行了讨论。结果表明,综合环境试验较好地模拟了大气腐蚀过程中材料表面干/湿循环和电化学特点;同时综合环境试验也较好地模拟了铝合金试样表面的宏观形貌和微观形貌,较好地反映了户外暴露试验的动力学特征。因此综合环境试验是更为合理的加速试验。The continuous salt spray, cyclic salt spray and comprehensive environmental test simulating atmospheric corrosion of LC4CS aeronautical aluminum alloy were studied using electrochemical and Scanning Electron Microscopy (SEM) techniques. Simulation and acceleration of these accelerated tests were discussed by comparison of outdoor and indoor tests. The results showed that the comprehensive environmental test simulated dry/wet and electrochemical characteristics of outdoor test. Meanwhile, comprehensive environmental test also had similar corrosion morphology and corrosion kinetics to those in outdoor tests; the comprehensive environmental test was a more accurate accelerated test for atmospheric corrosion of aeronautical aluminum alloy.

关 键 词：铝合金 大气腐蚀 加速试验 综合环境试验 模拟性 加速性 

分 类 号：TG172.2[金属学及工艺—金属表面处理]