矿用卡车离合器用锌钨合金增强铜基粉末冶金摩擦材料的摩擦磨损性能  

Friction and wear properties of PM Zn-W alloy reinforcing copper-based friction material for mining truck clutches

作　　者：谢茂青 王雷刚[1] 彭鹏 杨国盛 张嘉浩 XIE Maoqing;WANG Leigang;PENG Peng;YANG Guosheng;ZHANG Jiahao(School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,China;Zhejiang Tieliu Clutch Co.,Ltd.,Hangzhou 311101,China;Nantong Wanda Friction Material Co.,Ltd.,Nantong 226611,China;School of electrical and Automation Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]江苏大学材料科学与工程学院,镇江2120013 [2]浙江铁流离合器股份有限公司,杭州311101 [3]南通万达摩擦材料有限公司,南通226622 [4]合肥工业大学电气与自动化工程学院,合肥230009

出　　处：《粉末冶金材料科学与工程》2020年第5期440-448,共9页Materials Science and Engineering of Powder Metallurgy

基　　金：国家自然科学基金资助项目(51775249)。

摘　　要：在现有铜基粉末冶金摩擦材料配方中加入Zn-W合金,设计不同锌钨合金含量w(Zn-W)以及不同压制密度,制备矿用卡车离合器用铜基摩擦材料,分析和测试材料的组织与摩擦磨损性能,并进行能量/功率等级递增试验和台架试验。结果表明:铜基摩擦材料的表面硬度随w(Zn-W)增加而下降,随致密度增加而升高;摩擦因数随w(Zn-W)增加而增大,随致密度增加而减小。w(Zn-W)为6%、且致密度比现有配方的铜基摩擦片致密度提高10%的铜基摩擦片具有合适的表面硬度和动/静摩擦因数以及较好的耐磨性能,并能降低汽车的噪声、振动及声振粗糙度,比不添加锌钨合金的铜基摩擦片的能量输出提高2级,可承受第6级能量输出(753.16 J/cm^2),主要性能略高于国外进口铜基摩擦片。The copper baseed friction materials for mine truck clutch were prepared by adding Zn-W alloy into the existing copper base powder metallurgy friction material formulation,with different Zn-W alloy content and different pressing density.The microstructure and friction and wear properties of the materials were analyzed and tested,and the incremental energy/power level test and bench test were carried out.The results show that the surface hardness of Cu based friction materials decreases with the increase of Zn-W alloy content and increases with the increase of density.The friction coefficient increases with the increase of Zn-W alloy content and decreases with the increase of density.The copper based friction plate with mass fraction of 6%Zn-W alloy and 10%higher density has suitable surface hardness,dynamic/static friction coefficient and good wear resistance,and can reduce the noise,vibration and acoustic vibration roughness of automobile.Compared with the friction plate without Zn-W alloy,the energy output of the friction plate can be increased by two levels,and the sixth level energy output(753.16 J/cm^2)can be sustained.The main performance of the friction plate is slightly higher than that of the imported copper based friction plate.

关 键 词：锌钨合金 密度 铜基摩擦材料 摩擦性能 台架试验 

分 类 号：TB36[一般工业技术—材料科学与工程]