Evaluation for Chromium(III) Type Chemical Conversion on Aluminum Alloy Building Materials

Abstract

Recently, demand on the global environmental management and human health and safety is getting big worldwide social problem. In surface preparation process of aluminum alloy building materials, it is necessary to evaluate chemical conversion without chromium(VI). In this paper, evaluation for chromium(III) type chemical conversion are discussed on experimental results relating to performance test and method of quality control. As a result, chromium(III) type chemical conversion had good corrosion resistance and good coating adhesion, so it is possible to apply chromium(III) type chemical conversion to surface preparation process of aluminum alloy building materials.