摘要
采用放电等离子烧结技术(spark plasma sintering,SPS)制备铜基粉末冶金摩擦材料,研究石墨烯微片含量对铜基粉末冶金摩擦材料物理性能和摩擦磨损性能的影响。结果表明:当石墨烯微片质量分数低于4%时,材料的密度、孔隙率和抗剪切强度随石墨烯微片含量的增加而升高;当石墨烯微片质量分数超过4%后,材料的密度、孔隙率和抗剪切强度随石墨烯微片含量的增加而略微减小;石墨烯微片质量分数为4%时,铜基粉末冶金摩擦材料具有最优的摩擦性能,此时其布氏硬度为82,剪切强度为98.73 MPa。
Copper based powder metallurgy friction materials were prepared by spark plasma sintering(SPS)technology.The effects of graphene nanoplatelets content on the physical properties and friction and wear properties of copper based powder metallurgy friction materials were studied.The results show that when the mass fraction of graphene nanoplatelets is less than 4%,the density,porosity and shear strength of the material are increased with the increase of graphene nanoplatelets content.When the mass fraction of graphene nanoplatelets is more than 4%,the density,porosity and shear strength of the material are slightly decreased with the increase of graphene nanoplatelets content.When the mass fraction of graphene nanoplatelets is 4%,the copper based powder metallurgy friction material has the best friction performance.The Brinell hardness is 82 and the shear strength is 98.73 MPa.
作者
郑锦
何美凤
刘平
张柯
ZHENG Jin;HE Meifeng;LIU Ping;ZHANG Ke(School of Materials Science and Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《有色金属材料与工程》
2021年第3期5-12,共8页
Nonferrous Metal Materials and Engineering
基金
国家重点研发计划资助项目(2017YFB0306405)。
关键词
粉末冶金
石墨烯微片
放电等离子烧结
抗剪切强度
摩擦磨损
powder metallurgy
graphene nanoplatelets
spark plasma sintering
shear strength
friction and wear