镁合金微弧氧化技术的研究进展

结合国内外微弧氧化技术的研究成果,综述了成膜过程火花放电机理及陶瓷层的生长过程,总结了电解液组成、电源类型、工作模式、电参数以及基体材料等对微弧氧化膜性能的影响。根据近年来微弧氧化技术用于镁合金表面处理的发展状况,介绍并分析了几种封孔处理的优化方法,重点介绍了工艺更为简单的原位封孔技术。同时也对镁合金微弧氧化技术的发展趋势和应用前景进行了展望。

Research Progress of Micro-arc Oxidation Technology on Magnesium Alloys

Combined with the research results of micro-arc oxidation (MAO) at home and abroad,the spark discharge mechanism and the growth process of the ceramic coatings were summarized, and the effects of electrolyte solution composition,power types,operating modes,electrical parameters and substrate materials on the performance of the MAO coatings were introduced. According to the recent development status of application of the MAO technology in surface treatment of magnesium alloys,the optimization methods by pore sealing techniques were introduced and analyzed. Especially,the in-situ pore sealing technique was emphasized for its simpler process. In the meantime,the development trend and application prospect of MAO technology on magnesium alloys were presented.