目前,时铝合金表面腐蚀行为的研究,宏观和微观脱离,不能精确地显示腐蚀结果.尝试利用体视显微镜技术对LY12CZ铝合金的腐蚀进行实时观测并重现腐蚀过程,对体视显微镜技术在腐蚀试验中的应用进行了探索.结果表明:在EXCO溶液中LY12CZ铝合金的腐蚀是从表面膜的破坏开始的,并且腐蚀坑总是沿着轧制方向(晶界方向)发展,即使有垂直于轧制方向的人为划痕也是如此;在特定条件下,不稳定的胶状Al(OH)3膜也能阻碍局部腐蚀的发展,初期先发生腐蚀的部住,往往并不是腐蚀最严重的部位.体视显微镜技术能够实现实时观测和表面腐蚀过程的重现,如果能克服其放大倍数等方面的限制,则有可能对腐蚀研究实现宏观与微观的结合,可以准确地展示腐蚀状况.
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