Friction wear property of brake materials by copper-based powder metallurgy with various brake speeds

The experiment is conducted on MM-1000 friction test machine,which tests friction wear property of copper-based brake materials by powder metallurgy at different brake speeds.It shows that the coefficient of friction and wear volume are greatly influenced by brake speed.When the brake speed is 4000 r/min,the material still has a coefficient of friction with 0.44.When the brake speed is over 4000 r/min,the coefficient of friction decreased rapidly.When the brake speed is 3000 r/min, the material's wear intensity is minor.That is to say,no matter how higher or lower the brake speed is the wear volume is bigger relatively. With the brake speed of the lower one it mainly refers to fatigue wear,while of higher one it mainly refers to abradant and oxidation wear.