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利用浸渍法在铝合金ＬＹ１２表面上获得了稀土转化膜。确定了成膜的最佳工艺。利用湿热试验、盐水浸渍试验、电化学测试方法评价了膜的耐蚀性能。提出了膜的耐蚀机理。
A rare earth conversion coating was obtained on the surface of aluminum alloy LY12 by impregnation method. Determine the best film-forming process. The corrosion resistance of the film was evaluated by wet heat test, brine immersion test and electrochemical test. Proposed the corrosion resistance of the film.