纳米ZnO和纳米SiO_2添加剂对铝合金微弧氧化膜层组织及性能的影响  

Influence of Nanometer ZnO and SiO_2 Additives on Microstructure and Performance of Al Alloy Micro-arc Oxide Film Layer

作　　者：黄小威[1] 张晓燕[1] 闫洪达 吴德凤[1] 黄丹[1] 

机构地区：[1]贵州大学材料与冶金学院材料与冶金学院,贵州贵阳550025

出　　处：《热加工工艺》2016年第4期160-161,164,共3页Hot Working Technology

基　　金：贵州大学SRT项目(2012-120);贵州省国际科技合作计划项目(2012-7001);贵阳市社会发展与民生科技计划项目(2012103-70)

摘　　要：采用X射线衍射仪、扫描电镜、摩擦磨损试验机和电化学分析等手段研究了纳米添加剂对铸造铝合金微弧氧化陶瓷涂层的相组成、微观结构、耐磨损和耐腐蚀性的影响。结果表明:ZnO或SiO_2纳米粉末的添加都使得微弧氧化陶瓷涂层的表面更加致密,膜层的耐磨性和耐蚀性有明显提高;添加纳米ZnO所产生的提升效果优于纳米SiO_2产生的提升效果。The influences of nanometer additive on phase composition, microstructure and wear resistance, corrosion resistance of casting Al alloy micro-arcoxidation ceramic coatings were studied by using XRD, SEM, friction wear testing machine and electrochemical analysis. The results show that the addition of ZnO/SiO2 nano powder makes the surface of micro-arc oxidation ceramic coatings more dense, makes the wear resistance and corrosion resistance of the coating obviously improve. Adding nano ZnO makes the enhancing effect more superior compared with that of nano-SiO2.

关 键 词：微弧氧化 纳米氧化锌 纳米二氧化硅 铝合金 

分 类 号：TG174[金属学及工艺—金属表面处理]