陈显明;潘青林;

• 1:肇庆学院电子信息与机电工程学院
• 2:中南大学材料科学与工程学院

摘要(Abstract)：

为研究镁合金微弧氧化膜层的膜/基界面区附近的组织形态,在碱性电解液中,以AZ91镁合金为基体制备出微弧氧化陶瓷薄膜。采用恒电流控制模式,电流密度为10~30 A/dm2;利用透射电镜(TEM)和扫描电镜(SEM)研究了氧化薄膜界面及附近的显微结构。研究表明:微弧氧化膜层的膜/基界面区附近的组织以微晶和纳米晶为主;氧化膜层膜/基界面区附近的显微硬度比基体有大幅度提高,这主要是由于膜/基界面区附近形成了Mg和Mg O的互相渗透区域,同时Mg和Mg O的晶粒都非常细小,具有细晶强化的效果。

关键词(KeyWords)： 镁合金;微弧氧化;界面;微晶;膜层;性能

Abstract:

Keywords:

基金项目(Foundation): 中南大学博士后基金资助项目(126226);; 广东省科技计划资助项目(2012B011000038)

作者(Author): 陈显明;潘青林;

Email:

DOI: 10.14024/j.cnki.1004-244x.2015.01.014

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