采用微弧氧化法在SiCp/A356复合材料表面沉积获得连续致密的陶瓷膜,测定了陶瓷膜的生长曲线和显微硬度,利用SEM与XRD分析了陶瓷膜的组织形貌和相组成,考察了金属基复合材料微弧氧化膜的耐磨和防腐性能.结果表明:SiC增强体阻碍了微弧氧化膜的生长,但它并未破坏其完整性;微弧氧化处理初始阶段,陶瓷膜生长方式以向外生长为主,陶瓷膜主要由γ-Al2O2相组成;30min后,向外生长逐渐变慢,向内生长开始增强;处理20min之后,陶瓷膜主要由γ-Al2O3,α-Al2O3相和莫来石相构成;膜层耐磨性良好,耐腐蚀性能得到明显改善.
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