金属铬酸盐化学转化处理的替代技术

Alternative Technology of Metal Chromate Chemical Transform Treatment

铬酸盐化学转化处理可显著提高锌、铝、镁及其合金的耐蚀性,但处理液中的六价铬会污染环境、危害操作者的身体健康,因此随着铝合金、镁合金等轻金属材料使用量的增加和环保法规的日益严格,开发实用性强、环境友好型金属化学转化处理技术是当务之急。介绍了多种金属材料铬酸盐化学转化处理替代技术的典型工艺及特点。

This paper introduces replacement technology of chromate chemical transform treatment for some metals,and also suggests that development of environmental friendly chemical transformation technology is urgent .The results have shown that chromate chemical transform treatment can improve the corrosion resistance of zinc,aluminium,magnesium and their alloy evidently.And Cr 6+ in solution can damage health of operator,pollute entironment.