碳纤维锻造复合材料的摩擦行为  

Friction Behavior of Carbon Fiber Forged Composite

作　　者：陆龙生[1] 方何正子 谢颖熙[1] 孙佳伟[1] 万珍平[1] LU Longsheng;FANG-HE Zhengzi;XIE Yingxi;SUN Jiawei;WAN Zhenping(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China)

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2019年第1期7-13,共7页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51775197;U1601203)~~

摘　　要：采用模压成型工艺制备了环氧树脂基碳纤维锻造复合材料,测试了该材料在干摩擦和水润滑摩擦条件下的不同摩擦行为,研究了两种摩擦条件下摩擦系数的变化特性差异,并进一步分析了微观磨损机理.结果表明:两种不同摩擦条件下锻造复合材料的摩擦系数展现出不同的变化趋势,干摩擦条件下摩擦系数经历了初始稳定期、转移膜形成期和稳定期3个阶段,期间形成的含铁转移膜具有自润滑效应;水润滑摩擦条件下由水润滑膜主导复合材料的摩擦行为,摩擦过程能快速进入稳定期,摩擦系数和磨损率较小,磨损率保持较为稳定;锻造复合材料在两种摩擦条件下的摩擦系数减少率基本相同.Carbon fibre forged composite(CFFC)with epoxy matrix was prepared with moulding pressing technology.The friction performance of the CFFC under dry and water-lubricated friction conditions were comparatively investigated.The variations of the friction coefficient under these two friction conditions were studied,and the micro wear mechanism of the CFFC was analyzed.Results show that the friction process of CFFC exhibits different trends under these two conditions.The friction process in dry friction can be divided into three stages,including an initial stability stage,a transfer film formation stage and a stabilization stage,during which an iron-containing transfer film possesses a self-lubricating effect.While in water-lubricated friction,the friction behaviour of CFFC is dominated by a water-lubricated film,which could help its friction process rapidly develop into the stabilization stage.A smaller friction coefficient and a lower and more stable wear rate of CFFC are obtained under the water-lubricated friction condition.In addition,the reduction rates of friction coefficient are basically the same under two friction conditions.

关 键 词：碳纤维 锻造复合材料 摩擦性能 干摩擦 水润滑摩擦 

分 类 号：TH117[机械工程—机械设计及理论]