孔隙率对Al_2O_3陶瓷涂层绝缘轴承绝缘性能的影响  

Influence of Porosity on Insulation Performance of Insulation Bearings with Al_2O_3 Ceramic Coatings

作　　者：张玲[1,2,3] 冯颖[1,2,3] 马越[1,2,3] 

机构地区：[1]洛阳轴研科技股份有限公司,河南洛阳471039 [2]河南省高性能轴承技术重点实验室,河南洛阳471039 [3]滚动轴承产业技术创新战略联盟,河南洛阳471039

出　　处：《轴承》2017年第6期45-47,共3页Bearing

摘　　要：采用等离子喷涂工艺在轴承外圈上喷涂Al_2O_3陶瓷绝缘涂层,对涂层厚度、微观结构、孔隙率及绝缘性能进行检测,结果表明:等离子喷涂Al_2O_3陶瓷涂层结构中存在一定数量的孔隙,不同喷涂工艺参数下,孔隙率在1%~8%之间;孔隙率对涂层的绝缘性能影响较大。The AI203 ceramic insulation coatings are prepared by plasma spraying process on outer rings of bearings, and the thickness of coatings, microstructure, porosity and insulation performance are analyzed. The results show that the structure of A1203 ceramic coatings by plasma spraying has a certain amount of porosity. The porosity is 1% - 8% under different spraying parameters, which has great influence on insulation performance of coatings.

关 键 词：圆柱滚子轴承 孔隙率 AL2O3 陶瓷涂层 绝缘性能 

分 类 号：TH133[机械工程—机械制造及自动化]