三价铬电镀铬现状及发展趋势

长期以来,电镀铬通常采用六价铬电镀液.近年来,由于六价铬对环境等方面带来污染影响,于是加紧了对三价铬电镀的研究.实际上提出用三价铬代替六价铬的研究已经有很长时间.用三价铬镀装饰铬与六价铬电镀相比,具有很多优异特性,但在实际应用中也存在一些问题,其可镀性受到一定限制.因此,用三价铬电镀功能性铬还没有被实际广泛应用.还介绍了三价铬电镀的机理及展望,并提出了有待深入研究的问题.

Recent Development and Tendency of Trivalent Chromium Plating

Chromium electroplating is always carried out in a plating bath containing hexavalent chromium. Recently, since hexavalent chromium has bad effects on environment, etc. ,research on the trivalent chromium plating has been accelerated. The trivalent chromium plating has been proposed for a long time. Trivalent chromium plating has some distinct advantages over hexavalent chrome on decorative application. There are potential problems on its application, and its available condition is limited. Thus, hard chromium plating has not yet been practically used. The mechanisms and prospect of trivalent chromium plating were introduced. And some problems that should be deeply studied were pointed out.