Abstract：6%(mass fraction) SiO2/ZrO2 composite ceramic components was added into powder metallurgy copper-based friction materials to study the effect of the mass fraction changes of SiO2 and ZrO2 on the friction and wear properties of friction materials, and analyze the friction and wear mechanism of materials. The results show that with increasing w(SiO2)/w(ZrO2), the density and hardness of the copper-based friction material increase. When braking at high speed, the friction coefficient and friction stability factor of friction material are small. SiO2 can effectively improve the friction coefficient, and ZrO2 can reduce the wear rate of the friction pair. When w(SiO2)/w(ZrO2) is 2/4, the average friction coefficient during high-speed braking is 0.326, the friction stability factor is 0.71, which is at a high level, and the damage of the dual material is within the acceptable range, so the material has a relatively good friction and wear performance. SiO2 is easy to fall off to form abrasive particles, and the interface between ZrO2 and the matrix is in a better bonding state, so as the content of SiO2 decreases. The main wear mechanism changes from abrasive wear to adhesive wear and abrasive wear and finally to delamination wear.
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2021, Vol. 26 
