摘要
研究了铝及铝合金在万宁近海大气不同距海点暴露 0 .5a ,1a ,2a的腐蚀行为 ,观察了锈层的形貌、相组成及锈层中合金元素的分布。试验结果表明距离海岸线越近 ,失重率越大 ,腐蚀速度越快 ,说明Clˉ对铝及铝合金有很强的腐蚀作用 ,能加速铝合金的腐蚀。同时在万宁海洋大气环境下 ,纯铝在暴露初期更易腐蚀 ,其腐蚀率是锻铝的 2倍 ,此后随着暴露时间的延长而减缓。
The behaviors of atmospheric corrosion of aluminum and alloy in marine environments for 0.5 years, 1 year, 2 years were studied, and the corrosion products were analysed. Results showed that mass loss increases with the decrease of distance away from seashore. The reason is that Cl ˉ can accelerate corrosion. It was confirmed that pure aluminium 1050A is more sensitive to marine atmosphere than forging aluminum 6A02 at first stage of exposure tests.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2002年第6期456-459,共4页
Chinese Journal of Rare Metals
基金
国家自然科学基金资助项目 (5 989914 0 -1)
关键词
大气腐蚀
铝
铝合金
暴露试验
atmospheric corrosion
aluminum and alloy
exposure tests
