铜铝石墨组合材料摩擦角度与摩擦性能的关系  

Relationship Between Angle and Tribological Properties of Copper Aluminum-Graphite Assembled Materials

作　　者：韩晓明[1] 王亚楠[1] 符蓉[1] 苏琳琳[1] 

机构地区：[1]大连交通大学连续挤压工程研究中心,辽宁大连116028

出　　处：《大连交通大学学报》2016年第5期99-102,共4页Journal of Dalian Jiaotong University

基　　金：辽宁省教育厅科学研究计划资助项目(L2013188);中国铁路总公司重点科技计划资助项目(2013J011-E)

摘　　要：通过组合法制备了铜、铝、石墨三种材料构成的组合材料,利用定速摩擦试验机,研究了摩擦速度为 200-2 000 r/min和制动压力为 0.25 - 0.64 MPa条件下,摩擦角度对摩擦系数的影响.试验结果表明： 摩擦角度对摩擦系数的影响与压力有关.当压力小于 0.51 MPa时,摩擦角度的改变对摩擦系数影响不大;当压力超过 0.51 MPa时 ,45°方向的摩擦系数要明显高于 0°方向和 90°方向的摩擦系数,原因在于摩擦角度为 45°时,摩擦表面容易发生整体剪切流动,较强的粘着力形成鱼骨状裂纹,使剪切作用力增大,导致摩擦系数增高.The material consisting of copper, aluminum and graphite is assembled, and the relationship between angle of materials and friction coefficient were studied by using constant speed friction test machine with the speed range from 200 to 2 000 r/min and the pressure from 0. 25 to 0. 64 MPa. The test results show that the effects of angle on friction performance are closely related to the friction pressure. When the pressure is lower than 0.51 MPa, the friction coefficient is not sensitive to the angle. When the pressure is greater than 0. 51 MPa, the friction coefficient at 45° is higher than the friction coefficient at 0°and 90°.

关 键 词：组合材料 摩擦性能 摩擦角度 

分 类 号：TB39[一般工业技术—材料科学与工程]