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为了研究镍对铜基摩擦材料摩擦磨损性能的影响,采用粉末冶金技术制备了镍含量分别为0%、3%、6%、9%的铜基摩擦材料。在定速摩擦试验机上进行摩擦磨损试验,研究了摩擦速度、镍含量对摩擦磨损性能的影响。结果表明,镍可有效提高摩擦材料的强度和硬度。随镍含量的增加,材料磨损率减小,摩擦系数稳定性增加。当镍含量大于6%时,在高速摩擦时,镍可在材料表面形成致密而均匀的氧化镍层,氧化镍与基体结合强度较高,提高了摩擦稳定性。
In order to study the effect of nickel on the friction and wear properties of copper-based friction materials, copper-based friction materials with 0%, 3%, 6% and 9% nickel content were prepared by powder metallurgy. Friction and wear tests were carried out on a fixed speed friction tester to study the influence of friction speed and nickel content on friction and wear properties. The results show that nickel can effectively improve the strength and hardness of the friction material. With the increase of nickel content, the material wear rate decreases and the friction coefficient stability increases. When the nickel content is more than 6%, nickel can form a dense and uniform nickel oxide layer on the surface of the material during high-speed friction. The nickel oxide has a higher bonding strength with the matrix and improves the frictional stability.