Abstract: The effect of ferroboron content on the friction coefficient and wear rate of copper-based brake friction material prepared by powder metallurgy method was investigated. The microstructure, friction and wear surface morphology of the material were characterized by scanning electron microscopy (SEM). Meanwhile, the mechanism of friction and wear was analyzed. The results demonstrated that when the content of ferroboron was low (0%—6%), the friction coefficient of the material was significantly reduced and the wear rate was higher. When the content of ferroboron was high (9%—12%), the friction coefficient of the material at high speed was higher and the fluctuation was small and the wear rate was smaller. The wear mechanism of friction material was dominated by abrasive wear at lower speed and the mix of adhesive and oxidation wear at higher speed. In the comprehensive compa-rison, when the content of ferroboron was 12%, the friction coefficient fluctuated little and tended to be stable under high speed braking, and the wear-resisting property was better.
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