摘要
在NaAlO2体系溶液中添加不同浓度的NaF,对SiC增强铝基复合材料进行微弧氧化处理。研究了电压上升及陶瓷层生长速率随NaF浓度的变化规律;对所获得的陶瓷层用扫描电镜进行形貌及结构观察;用电化学工作站进行极化曲线测试;用X射线衍射仪对膜层相组成进行分析。结果表明:当NaF浓度为1 g/L时,电压上升最快,陶瓷层生长速率最快,所获得的膜层致密性较好,耐蚀性能也最好。
SiC reinforced aluminum matrix composite micro-arc oxidation process was carried out in the NaAIO2 system＇s solution adding different concentrations of NaF. Variation rules of the growth rate of voltage rise and ceramic layer with NaF concentration were studied. Morphology and structure of the ceramic layer were observed by SEM. The polarization curves were tested by the electrochemical workstation. The phase composition of film was analyzed by XRD. The results show that： When NaF concentration is 1g/L, the voltage rises fast and the ceramic coating film has the fastest growth rate. The obtained film denseness is best. And the corrosion resistance is also most preferable.
出处
《热加工工艺》
CSCD
北大核心
2014年第10期148-150,154,共4页
Hot Working Technology
关键词
SiC增强铝基复合材
微弧氧化
陶瓷层
SiC reinforced aluminum matrix composite
micro-arc oxidation（MAO）
ceramic layer
