锌黄铜-铝合金互配副干摩擦学特性的磁场干涉机制研究  

Interfering Mechanism of Magnetic Field in Dry-sliding Tribological Properties of Mutual Pairs CuZn-Aluminum Alloy

作　　者：魏永辉[1] 张永振[1,2] 陈跃[2] 

机构地区：[1]西北工业大学机电学院,陕西西安710072 [2]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《摩擦学学报》2013年第2期184-190,共7页Tribology

基　　金：国家973前期研究专项(2010CB635113);国家自科基金(50975078);国家重点联合基金(U1034002)项目资助~~

摘　　要：采用改进的MPV-1500型摩擦磨损试验机,国内首次研究了直流磁场对抗磁性(锌黄铜)和顺磁性(铝合金)材料互配副干摩擦学特性的影响.结果表明:磁场的施加和增大,加剧了抗磁性锌黄铜的磨损,降低了顺磁性铝合金的磨损,互配副的摩擦系数均有增大趋势;在抗磁性锌黄铜背面添置铁磁性材料,即可克服磁场对锌黄铜干摩擦学特性的不利影响;销、环试样的化学性能以及装卡装置的磁性均可能影响试验研究结果.The influence of DC magnetic field on dry-sliding friction and wear characteristics of mutual pairs of diamagnetic（CuZn alloy） and paramagnetic（2A02-Al alloy） materials has been studied by use of an improved MPV-1500 type friction and wear tester under a load of 150 N and a sliding velocity of 0.4 m/s at room temperature.The results show,exerting and increasing of a magnetic field aggravated the wear of diamagnetic CuZn and reduced wear of paramagnetic aluminum alloy,friction coefficient of mutual friction pairs（CuZn/aluminum alloy,aluminum alloy/CuZn） showed the trend of increasing.Additions to ferromagnetic materials on the back of diamagnetic materials can overcome the adverse effects of magnetic field on wear resistance of diamagnetic materials.Both chemical properties of pin-ring specimens and magnetism of clamping device may affect the test results.

关 键 词：磁场 干滑动摩擦 磁吸力 电力机车 

分 类 号：TH117.3[机械工程—机械设计及理论]