Ni含量对铜基粉末冶金材料摩擦性能的影响
Effects of Ni Content on Tribological Properties of Cu-based Powder Metallurgy Materials
刘建秀 1尼炯 1樊江磊 1王铭鑫 1张鹏程 1周天畅1
作者信息
- 1. 郑州轻工业大学机电工程学院,郑州 450002
- 折叠
摘要
采用粉末冶金技术分别制备了Ni含量为 2%、4%、6%的铜基摩擦材料,研究Ni对铜基材料摩擦性能的影响.在MM-3000型摩擦磨损试验机上进行摩擦磨损试验,探究了不同Ni含量的摩擦材料随制动速度的变化.结果表明,Ni可以提高材料的硬度和强度,细化组织晶粒.加入镍后,摩擦材料的磨损量降低,摩擦因数增大,镍含量为2%时摩擦因数为0.444.在高速摩擦过程中,Ni在材料表面形成了一层致密且均匀的氧化膜,增加了材料在摩擦过程中的稳定性.
Abstract
The influence of nickel on tribological properties of copper-based friction materials with various Ni additions fabricated by powder metallurgy technology was investigated.The friction and wear experiments were carried out on the MM-3000 friction and wear testing machine,and variation of friction materials with different nickel contents with braking speed were explored.The results indicate that nickel can enhance the hardness and strength of the material and refine the grain.Moreover,the wear loss is reduced and the friction coefficient is increased after nickel addition,which reaches 0.444 with the nickel content of 2%.During the process of high-speed friction,nickel forms a dense and uni-form oxide film on the surface of the material,improving the stability during friction.
关键词
镍/粉末冶金/摩擦材料/硬度/摩擦因数Key words
Nickel/Powder Metallurgy/Friction Material/Hardness/Friction Coefficient引用本文复制引用
基金项目
国家自然科学基金资助项目(U190410595)
出版年
2024
NETL
NSTL
万方数据