铝合金基体上等离子喷涂复相陶瓷涂层力学性能研究  

Mechanical properties of composite ceramic coatings plasma-sprayed on magnesium alloy

作　　者：冯拉俊[1] 雷阿利[1] 王官充[1] 许永征[1] 张静[1] 

机构地区：[1]西安理工大学材料学院,陕西西安710048

出　　处：《功能材料》2013年第9期1298-1300,1304,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51174160);陕西省重点实验室资助项目(2011HBSZS011)

摘　　要：针对铝活塞表面容易划伤的实际,利用机械球磨法和PVA造粒技术制备复合陶瓷粉末,采用等离子喷涂法在XGFH-3铝合金表面制备复合陶瓷涂层,涂层制备过程采用氧气送粉,不喷过渡层,测试了涂层结合强度、显微硬度、耐磨性等性能。结果表明,粉末球磨96h制备的涂层结合强度最高,达到了19.07MPa,复相陶瓷涂层的显微硬度最大值达到了HV0.11105,是基体的16倍,基体单位面积磨损量远高于喷涂试样,大约为涂层磨损量的8.5倍以上,最大达到了13.6倍。Aiming at the reality of aluminium piston surface easy scratches, in this paper the composite ceramic coating was deposited on XGFH-3 aluminium substrate by plasma spraying with composite ceramic powder prepared by mechanical ball milling and PVA granulating technology. The bond strength between the coating and substrate, the coating microhardness and the wear resistance for coating and substrate were measured by using oxygen to feed powder without transition layer. The results showed that the maximum bond strength, 19.07MPa,for the coating sprayed with powder milled for 16h were reached. The maximum microhardness of the coating, HV0.11105, was realized, which was 16 times harder than the substrate. The wear mass per unit area of the substrate was about 8.5 times larger than the coatings, of which the maximum, 13.6 times, was realized.

关 键 词：铝合金 等离子喷涂 机械合金化 陶瓷涂层 耐磨性 

分 类 号：TG174[金属学及工艺—金属表面处理]