On the electric behaviour of conductive grease inside the contact zone
作者机构：SKF(Shanghai)Automotive Technologies Co.Ltd.Shanghai 201814China School of Mechanical and Automotive EngineeringQingdao University of TechnologyQingdao 266250China
出 版 物：《Friction》 (摩擦（英文版）)
年 卷 期：2024年第12卷第4期
页 面：683-697页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程]
基 金：The author would like to thank Weihua QIAN Yunfei PAN and He ZHU for their kind supports and permission to publish this paper. The author would also thank Guillermo MORALES and Liang GUO for their proof review and valuable recommendations.
主 题：Electric erosion lubricant conductivity grease film impedance
摘 要：Conductive grease has been considered as a potential solution in addressing electric erosion issue inside motor bearings.Understanding the conductive grease performance,especially the electric and tribological behaviour is crucial for its application.This paper combines bulk grease characterization and contact film study considering both electrical and tribological loading conditions.The results show that the electric performance for the selected conductive grease sample is electric field dependent,including both frequency and voltage amplitude.Its film impedance inside the contact area is closely related to the external electric field,running condition,and lubrication regime.The following film impedance calculation tells that not only bulk grease electric parameters,but the contact parameter,lubricant film contour and lubrication condition should be considered when performing the overall bearing electrical modelling.
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