摘要
采用粉末冶金压烧技术制备了含不同质量分数石墨的铜基摩擦材料,研究了石墨含量对摩擦材料微观组织、磨损性能和磨损机理的影响。结果表明:铜基体的连续性随石墨含量增加而降低,动摩擦系数随石墨含量的增加先增加后降低,磨损量随着石墨含量的增加而减小;材料的磨损机理为犁沟式磨料磨损;石墨质量分数为16%时,试样动摩擦系数和静摩擦系数最高并且稳定,具有最好的摩擦磨损性能。
Copper-based friction materials with graphite in the different mass fraction were prepared by powder metallurgy sintering technology.The effects of graphite content on the microstructure,wear properties,and wear mechanism of the friction materials were studied.The results show that,with the increase of graphite content,the copper matrix continuity decreases,the dynamic friction coefficient increases first and then decreases,and the abrasion loss decreases.The wear mechanism of the friction material is plough-type abrasive wear.When the graphite mass fraction is 16%,the dynamic friction coefficient and the static friction coefficient are the highest and stable,showing the best friction and wear properties.
作者
胡铮
张楠
张万昊
杜建华
韩俊姣
纪箴
HU Zheng;ZHANG Nan;ZHANG Wang-hao;DU Jian-hua;HAN Jun-jiao;JI Zhen(China North vehicle Research lnstitute,Bcijing 100072,China;School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China)
出处
《粉末冶金技术》
CAS
CSCD
北大核心
2020年第6期409-413,共5页
Powder Metallurgy Technology
基金
换档操纵元件疲劳寿命设计技术研究(237099000000170004)。
关键词
铜基摩擦材料
粉末冶金
石墨
摩擦磨损
摩擦机理
copper-based friction material
powder metallurgy
graphite
friction and wear
wear mechanism
