摘要
研究碳纤维/聚四氟乙烯(CF/PTFE)、玻璃纤维/聚四氟乙烯(GF/PTFE)复合材料与氮化硅陶瓷配副在海水环境下的摩擦学性能与润滑机制,分析滑动速度对摩擦副海水润滑性能的影响规律。结果表明:在海水润滑条件下,随着滑动速度的增加,PTFE、CF/PTFE、GF/PTFE材料与Si3N4陶瓷配副时的摩擦学性能均有明显改善,摩擦因数与磨损率均呈显著降低的趋势,其中CF/PTFE复合材料表现出更为优异的摩擦学性能,在1000 r/min滑动速度下摩擦因数低至0.026。磨损表面表征结果表明,在海水润滑条件下,PTFE基复合材料在摩擦过程中由于摩擦化学反应生成了润滑膜,可为摩擦副提供良好的润滑和减磨作用,从而减少摩擦磨损行为的发生。
The tribological properties and lubricating mechanisms of carbon fiber/polytetrafluoroethylene(CF/PTFE)and glass fiber/polytetrafluoroethylene(GF/PTFE)composites were investigated when paired with silicon nitride ceramics in a seawater environment.The effects of sliding velocities on the friction and wear performances were analyzed.The results show that the tribological properties of PTFE,CF/PTFE,GF/PTFE materials paired with Si3N4 ceramics are significantly improved with the increase of sliding velocities in a seawater environment,and the friction coefficient and wear rate show a significant decrease trend.CF/PTFE composite exhibits superior tribological properties,with a friction coefficient as low as 0.026 at a sliding velocity of 1000 r/min.The characterization results of the worn surface indicate that PTFE based com⁃posite materials generate a lubricating film during the friction process due to tribochemical reaction in a seawater environ⁃ment,which can provide good lubrication and wear reduction effects for the friction pair,thereby reducing the occurrence of friction and wear behavior.
作者
邹辛祺
葛正浩
王超宝
陈威
ZOU Xinqi;GE Zhenghao;WANG Chaobao;CHEN Wei(College of Mechanical&Electrical Engineering,Shaanxi University of Science&Technology,Xi’an Shaanxi 710021,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2023年第11期123-129,共7页
Lubrication Engineering
基金
国家水运安全工程技术研究中心基金项目(8111125)
陕西省自然科学基金项目(2023-JC-YB-346)
陕西省教育厅科研项目(22jc009)。
关键词
聚四氟乙烯
复合材料
氮化硅陶瓷
海水润滑
摩擦性能
polytetrafluoroethylene
composites
silicon nitride ceramics
seawater lubrication
frictional properties
