航空铝合金大气腐蚀加速试验研究  

STUDY ON ACCELERATED TESTS FOR ALUMINUM ALLOY ATMOSPHERIC CORROSION

作　　者：蔡健平[1] 刘明[1] 罗振华[1] 汤智慧[1] 李斌[1] 张晓云[1] 陆峰[1] 陶春虎[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《中国腐蚀与防护学报》2005年第5期262-266,共5页Journal of Chinese Society For Corrosion and Protection

基　　金：国家重点基础研究发展规划项目"材料的环境行为与失效机理"(G1999065004)

摘　　要：对模拟航空铝合金大气腐蚀的周期浸润腐蚀试验和综合环境试验进行了研究.采用电化学和材料研究技术对户内外试验进行了比较.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,同时也较好地模拟了铝合金的宏观形貌和微观形貌;加速试验的腐蚀产物主要以非晶态物质的形式存在,也较好地模拟了户外暴露试验的动力学特征.对户内试验的加速性进行了讨论.The continuous salt spray, alternating immersion and comprehensive environmental tests for atmospheric corrosion of aeronautical aluminum alloy were studied. By using electrochemical, SEM, XRD, XPS techniques, accelerated tests and outdoor exposure were compared. Results showed that, the comprehensive environmental test simulated characteristics of dry/wet and electrochemical process of outdoor test. Meanwhile, comprehensive environmental test also simulated the morphology of aluminum alloy atmospheric corrosion; the corrosion products in comprehensive environmental test mainly were amorphous; the kinetics of outdoor test also simulated by accelerated tests. The acceleration of the tests was discussed.

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：TG172.3[金属学及工艺—金属表面处理]