SrSO4增强自润滑CoCrW基复合材料的制备及高温摩擦学性能
Preparation and high-temperature tribological properties of self-lubricating CoCrW matrix composites reinforced by SrSO4
郭贺 1崔功军 1韩文鹏 1刘燕萍 1寇子明1
作者信息
- 1. 太原理工大学机械与运载工程学院,山西太原 030024;山西省矿山流体控制工程实验室,山西太原 030024;矿山流体控制国家地方联合工程实验室,山西太原 030024
- 折叠
摘要
为提高轴套和轴承的高温耐磨性,制备了 SrSO4(4.0％,9.0％,14.0％)增强自润滑CoCrW基复合材料,系统研究了 SrSO4对复合材料显微组织和高温摩擦学性能的影响.结果表明,SrSO4在烧结过程中分解,原位生成Cr2O3、Cr2S3、CoCr2O4和SrCrO4相.磨损表面形成了含有原位生成的固体润滑剂、氧化物以及摩擦时的化学反应产物的润滑膜,提高了 CoCrW基复合材料的高温润滑性能.综合来看,含有9.0％SrSO4的CoCrW基复合材料具有理想的摩擦学性能.
Abstract
Self-lubricating CoCrW matrix composites reinforced by SrSO4(4.0％,9.0％and 14.0％,respectively)were prepared to enhance the wear resistance of sleeve or bearing at high temperature,and the effect of SrSO4 on the microstructure and high-temperature tribological properties of composites was systematically investigated.The results show that the SrSO4 decomposes and the Cr2O3,Cr2S3,CoCr2O4 and SrCrO4 phases are in-situ synthesized during sintering.A lubricating film containing in-situ synthesized solid lubricants and oxides as well as the tribochemistry reaction products is formed on the worn surfaces,improving the high-temperature lubricating properties of CoCrW matrix composites.As a result,the CoCrW matrix composite with 9.0％SrSO4 has the desired tribological properties.
关键词
复合材料/高温/自润滑性/磨损Key words
composites/high temperature/self-lubricating/wear引用本文复制引用
基金项目
山西省基础研究计划(202303021211163)
山西省回国留学人员科研项目(2021-060)
国家自然科学基金(51775365)
国家自然科学基金(U1910212)
出版年
2024
NETL
NSTL
万方数据