镁合金表面化学转化膜研究进展

摘要

总结镁合金表面化学转化膜的研究现状,介绍铬酸盐转化膜、锡酸盐转化膜、磷酸盐/高锰酸盐转化膜、稀土转化膜、植酸转化膜和钼酸转化膜的处理工艺,讨论磷酸盐/高锰酸盐转化膜的成膜机理,分析各种化学转化膜的优缺点,展望今后镁合金表面化学转化膜的发展方向.%The research progress of the chemical conversion coatings on magnesium alloys was summarized and the treatment technologies of chromate films, stannate films, phosphate/permanganate films, rare-earth films and phytate films were reviewed. The formation mechanisms of the phosphate/permanganate conversion films were discussed. The merits and demerits of the various coatings were analyzed. And the developmental trends of the chemical conversion coatings on magnesium alloys were proposed.