电流对黄铜/Al_2O_3弥散强化铜合金摩擦副摩擦磨损性能的影响  

Effect of Electric Current on the Friction and Wear Behavior of Brass/Al2O3/Cu Composites

作　　者：刘瑞华[1] 宋克兴[1] 张旸 李振京 郜建新[1] 国秀花[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003 [2]正泰电气股份有限公司技术中心,上海201614 [3]河南纳士科技股份有限公司,河南焦作454003

出　　处：《润滑与密封》2007年第7期69-71,共3页Lubrication Engineering

基　　金：河南省高校杰出科研人才创新工程项目(2007KYCX008);河南省教育厅科技攻关项目(2007430004);河南科技大学重大科技前期预研专项(2005ZD003);河南科技大学人才科研基金项目(of023).

摘　　要：根据列车受电弓系统的实际工况条件,在自制的销-盘式载流摩擦磨损试验机上研究了Al2O3弥散强化铜合金销试样和黄铜（H62）盘试样摩擦副在载流条件下的滑动摩擦磨损性能,试验条件为速度20m/s、载荷0.63MPa、电流25-75A。试验结果表明,电流对黄铜/Al2O3弥散强化铜合金摩擦副的滑动干摩擦行为具有显著影响。随电流的增加,销试样的磨损率增加,摩擦因数增大,试样表层发生了磨粒磨损和粘着磨损。By the pantograph system of the train under practical working conditions, the friction and wear behavior of Brass/Al2O3/Cu composites pin against brass bronze disc at ambient dry sliding conditions were investigated on a self- making pin-on-disc testing, which were conducted at 20 m/s velocity, at 0.63 MPa load and at 25 - 75 A currents. The resuits show that the current has a notable effect on the tribology of Brass/Al2O3/Cu composites. The wear rate and the friction coefficient of the pin increase with the current, and the morpholgies wear are the adhesion wear and abrasive wear on the surface pin.

关 键 词：电流 受电磨损 磨损率 摩擦因数 

分 类 号：TG146.11[一般工业技术—材料科学与工程]