铜基粉末冶金刹车材料不同制动速度下的摩擦磨损性能  

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

作　　者：高红霞[1] 刘建秀[1] 王青[2] 

机构地区：[1]郑州轻工业学院机电工程学院,河南郑州450002 [2]郑州轻工业学院外语系,河南郑州450002

出　　处：《郑州轻工业学院学报（自然科学版）》2005年第3期10-12,共3页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金：河南省重大科技攻关项目(03230239000)

摘　　要：利用MM—1000型摩擦试验机对铜基粉末冶金刹车材料在不同制动速度下的摩擦磨损性能进行测试.结果表明:该材料的摩擦系数及磨损量受制动速度影响较大.当制动速度为4000 r/min时,仍具有较高摩擦系数为0.44;制动速度大于4000 r/min时,摩擦系数迅速下降;当制动速度为3000 r/min时,材料磨损量较小.低速制动下的磨损机理主要为疲劳磨损,高速制动时主要为磨粒磨损和氧化磨损.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.

关 键 词：刹车材料 摩擦磨损 制动速度 粉末冶金 

分 类 号：TB333[一般工业技术—材料科学与工程]