SrSO4增强自润滑CoCrW基复合材料的制备及高温摩擦学性能

doi:10.13251/j.issn.0254-6051.2024.04.004

金属热处理 ›› 2024, Vol. 49 ›› Issue (4): 18-25.DOI: 10.13251/j.issn.0254-6051.2024.04.004

SrSO₄增强自润滑CoCrW基复合材料的制备及高温摩擦学性能

郭贺^1,2,3, 崔功军^1,2,3, 韩文鹏^1,2,3, 刘燕萍^1,2,3, 寇子明^1,2,3

1.太原理工大学机械与运载工程学院, 山西太原 030024;
2.山西省矿山流体控制工程实验室, 山西太原 030024;
3.矿山流体控制国家地方联合工程实验室, 山西太原 030024

收稿日期:2023-10-17 修回日期:2024-02-26 出版日期:2024-04-25 发布日期:2024-05-27
通讯作者: 崔功军,教授,博士,E-mail:cuigongjun@tyut.edu.cn
作者简介:郭贺(1995—),男,硕士研究生,主要研究方向为机械摩擦学,E-mail:806329829@qq.com。
基金资助:
山西省基础研究计划(202303021211163);山西省回国留学人员科研资助项目(2021-060);国家自然科学基金 (51775365, U1910212)

Preparation and high-temperature tribological properties of self-lubricating CoCrW matrix composites reinforced by SrSO₄

Guo He^1,2,3, Cui Gongjun^1,2,3, Han Wenpeng^1,2,3, Liu Yanping^1,2,3, Kou Ziming^1,2,3

1. College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan Shanxi 030024, China;
2. Shanxi Mine Fluid Control Engineering Laboratory, Taiyuan Shanxi 030024, China;
3. National-local Joint Engineering Laboratory of Mine Fluid Control, Taiyuan Shanxi 030024, China

Received:2023-10-17 Revised:2024-02-26 Online:2024-04-25 Published:2024-05-27

摘要/Abstract

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。

关键词: 复合材料, 高温, 自润滑性, 磨损

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.

Key words: composites, high temperature, self-lubricating, wear

中图分类号:

TH117

郭贺, 崔功军, 韩文鹏, 刘燕萍, 寇子明. SrSO₄增强自润滑CoCrW基复合材料的制备及高温摩擦学性能[J]. 金属热处理, 2024, 49(4): 18-25.

Guo He, Cui Gongjun, Han Wenpeng, Liu Yanping, Kou Ziming. Preparation and high-temperature tribological properties of self-lubricating CoCrW matrix composites reinforced by SrSO₄[J]. Heat Treatment of Metals, 2024, 49(4): 18-25.

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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

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