Effects of Al2O3 Nanoparticles on Microstructure and Performance of Ceramic Coatings by Micro-arc Oxidation

摘要：

　　A dense ceramic oxide coating approximately 45 μm thick was prepared on a Ly12 aluminum alloy by micro-arc oxidation in an alkali-phosphate electrolytic solution.Coating thickness and surface roughness (Ra) were measured after the coating had been synthesized.The effects of Al2O3 nanoparticles in electrolyte on phase composition,microstructure and microhardness of the micro-arc oxidation ceramic coatings on Ly12 aluminum alloy were investigated by means of XRD,SEM and hardness experimentation.The results show that the ceramic coatings become more dense and its microhardness increased by adding Al2O3 nanoparticles in electrolyte.In addition,the roughness of the micro-arc oxidation ceramic coatings is obviously improved by addition of Al2O3 nanoparticles.

关键词： Micro-arc oxidation Ceramic coatings Al2O3 nanoparticles Surface properties

作者: Yujun Yin Shuhua Li Dawei Shen Yuanyuan Zu Changzheng Qu

作者单位: Shijiazhuang Mechanical Engineering College,Shijiazhuang 050003,China PLA 62025 Unit,Beijing 102300,China The Quartermaster Equipment Institute of the General Logistics Department of the PLA,Beijing 100082.

会议类型: 国际会议

会议名称: 2012 Workshop on Inorganic Thin Films and Coatings (2012年无机薄膜与涂层学术研讨会)

会议地点: 桂林

会议语种:英文

页码: 92-96

在线出版日期: 2012-07-16（万方平台首次上网日期，不代表论文的发表时间）