高湿度对轴承外圈等离子喷涂氧化铝涂层绝缘性能的影响  

Effect of High Humidity on Insulating Properties of Al2O3 Coatings for Bearing Outer Rings by Plasma Spraying

作　　者：刘丽斌 万磊[1,2,3] 李海洋 马越 李夏[1,2,3] LIU Libin;WAN Lei;LI Haiyang;MA Yue;LI Xia(Luoyang Bearing Research Institute Co., Ltd., Luoyang 471039, China;Henan Key Laboratory of High Performance Bearing Technology, Luoyang 471039,China;China International Science and Technology Cooperation Base for Digitization Design of High Performance Bearing, Luoyang 471039,China)

机构地区：[1]洛阳轴承研究所有限公司,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]高性能轴承数字化设计国家国际科技合作基地,河南洛阳471039

出　　处：《轴承》2020年第9期29-32,共4页Bearing

摘　　要：采用等离子喷涂法在轴承外圈表面喷涂氧化铝陶瓷涂层,对涂层做后续处理,进行高湿度试验,测量绝缘电阻,并对喷涂粉末和陶瓷涂层做XRD和SEM分析。结果表明:氧化铝陶瓷涂层的外圈做封孔处理可以提高涂层在高湿度环境下的绝缘性能,但由于涂层中存在孔隙和亚稳定γ-Al2O3相,涂层仍对高湿度环境有一定的敏感性。Plasma spraying method is used to spray Al2O3 ceramic coatings on surface of bearing outer rings.The insulation resistance is measured under high humidity after subsequent treatment of the coatings,and XRD and SEM analysis are carried out on spraying powder and ceramic coatings.The results show that the sealing treatment of Al2O3 ceramic coatings on outer rings can improve insulating properties of the coatings under high humidity.However,due to existence of pore and metastable phase ofγ-Al2O3 in the coatings,the coatings are still sensitive to high humidity.

关 键 词：滚动轴承 绝缘轴承 外圈 等离子喷涂 氧化铝 陶瓷涂层 绝缘电阻 湿度 

分 类 号：TH133.33[机械工程—机械制造及自动化] O472.1[理学—半导体物理]