为了认识Mg—Li结构对其微弧氧化陶瓷膜的影响，研究了纯α相、α＋β双相及纯β相Mg．Li合金在Na2SiO3溶液中微弧氧化的成膜特点。采用ICP—AES测量了微弧氧化时基体中Li＋的析出量；通过SEM，EDS，XRD等分析了陶瓷膜表面和截面形貌、元素分布及其相组成；利用测厚仪测量了陶瓷膜的厚度。结果显示：β相基体中的Li在微弧氧化过程中的析出量超过仅相和仅＋13相；“相击穿电压最低，最终槽压最大；α＋β相膜层最为均匀，孔洞最少；陶瓷膜均由O，Na，Mg，Si4种元素组成；α相膜层由MgO相组成，α＋β相和B相膜层均由MgO和Mg2SiO4两相组成；α相基体表面膜层最厚，膜层厚度随时间都呈近似抛物线变化。
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