摘要
利用放电等离子烧结制备出了超细晶WC-6Co硬质合金,研究了摩擦配副(TC4钛合金和GCr15轴承钢)对宽温域条件下超细晶WC-6Co硬质合金摩擦磨损性能的影响。结果表明,超细晶WC-Co硬质合金与TC4钛合金对磨时,在25~300℃,摩擦系数低,几乎未发生磨损,磨损机制为轻微的黏着磨损;在500℃,磨损表面的黏着磨损加剧,并发生氧化磨损,导致摩擦系数快速增大;在700℃,硬质合金开始发生磨损。与GCr15轴承钢对磨时,硬质合金发生明显磨损,摩擦系数和磨损率随着环境温度的增大,呈现逐步增大趋势,室温和700℃磨损率分别为2.17×10^(-8)和6.81×10^(-8)mm^(3)/(N·m);磨损机制为随着温度提高逐渐加剧的磨粒磨损,在高温环境下同时发生了氧化磨损。
An ultrafine-grained WC-6Co cemented carbide was fabricated via spark plasma sintering.The influence of their counterparts on the tribological properties of ultrafine-grained WC-6Co cemented carbides over wide temperature ranges was investigated.When sliding against the TC4 titanium alloy,the ultrafine-grained WC-Co cemented sample exhibits a low friction coefficient and negligible wear from 25 to 300 ℃,which is dominated by mild adhesive wear mechanisms.At 500 ℃,intensified adhesive wear coupled with oxidative wear occurs,leading to a rapid increase in the friction coefficient.Obvious wear loss initiates at 700℃.When sliding against GCr15-bearing steel,the cemented carbide experiences pronounced wear,with both the friction coefficient and wear rate progressively increasing with temperature,with wear rates of 2.17×10^(-8)and 6.81×10^(-8)mm^(3)/(N·m)at room temperature and 700 ℃,respectively.The wear mechanism is dominated by abrasive wear.With increasing temperature,the abrasive wear intensifies,and oxidative wear occurs.
作者
戴梓扬
于源
刘育林
方广凯
乔竹辉
DAI Ziyang;YU Yuan;LIU Yulin;FANG Guangkai;QIAO Zhuhui(Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai,Yantai 264006,China;College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering,Yantai 264006,China;State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China;Weifang Ganghua Gas Co.,Ltd.,Weifang 261000,China)
出处
《铸造技术》
2025年第7期680-688,共9页
Foundry Technology
基金
国家自然科学基金(52375217)
山东省自然科学基金(ZR20240E515,ZR2021JQ20)
山东省实验室项目(SYS202204)
国家重点研发计划(2023YFB3405800)
山东省泰山学者项目。
关键词
超细晶WC-6Co硬质合金
宽温域
摩擦磨损
摩擦配副
磨损机制
ultrafine-grained WC-6Co cemented carbide
wide temperature range
tribological behaviors
counterparts
wearmechanisms
作者简介
戴梓扬,2000年生,硕士生.研究方向为硬质合金.Email:1017383949@qq.com;通信作者:于源,1987年生,博士,副研究员.研究方向为抗磨润滑金属与陶瓷.Email:yuyuan@licp.cas.cn;通信作者:乔竹辉,1981年生,博士,研究员.研究方向为抗磨润滑金属与陶瓷.Email:zhqiao@licp.cas.cn。
