6061铝合金微弧氧化膜的组织及热震性能Microstructure and thermal shock resistance of microarc oxidation films on 6061 aluminum alloy
张盈,薛文斌,蒋兴莉,杨卓,李夕金,田华
摘要(Abstract)：
利用微弧氧化方法在6061铝合金上制备陶瓷膜。采用扫描电镜和X射线衍射仪研究了氧化膜的截面组织、成分和相结构,并用划痕法和热震试验评价了膜层与铝基体结合状况。结果表明微弧氧化膜由致密层和疏松层组成,氧化膜主要相组成为-γAl2O3、-αAl2O3和SiO2非晶相。划痕压力为55N时50μm膜层开始被破坏。热震试验结果表明,50μm膜层样品经过500℃→水淬50次循环后无变化。膜层越薄,抗热震性能越好,膜层表面抛光有利于提高微弧氧化膜的热震性能。
关键词(KeyWords)： 微弧氧化;6061铝合金;划痕;热震
基金项目(Foundation): 北京市科技新星计划(9558102500);; 教育部留学回国人员科研启动基金;; 北京市留学人员科技活动项目
作者(Author): 张盈,薛文斌,蒋兴莉,杨卓,李夕金,田华
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