压制压力对铜基粉末冶金闸片材料的摩擦特性的影响  

Influence of Compaction Pressure on Tribological Properties of Copper-based Powder-metallurgy Brake Materials

作　　者：王培[1] 陈跃[1] 张永振[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南省材料摩擦学重点实验室,河南洛阳471003

出　　处：《润滑与密封》2013年第4期23-26,共4页Lubrication Engineering

基　　金：国家自然科学基金项目(50975078);国家重点联合基金项目(U1034002);973计划前期研究专项(2010CB635113)

摘　　要：研究压制压力对铜基粉末冶金闸片材料密度和硬度的影响,制备的闸片材料与15CrMo配副,采用MMS-1G型高速摩擦磨损试验机考察铜基粉末冶金材料的摩擦特性,利用扫描电镜观察并分析材料金相形貌及磨损表面形貌。结果表明,随着压制压力的增大,试样烧结体的密度和硬度都呈现先上升后下降而后上升的趋势;压制压力为900 MPa时,试样的硬度和密度性能较好,同时摩擦因数较大且稳定,磨损量相对小。The influences of compaction pressure on the density and hardness copper-based powder-metallurgy brake ma- terials were studied. The tribological behavior of brake material against 15CrMo disc was investigated, and the metallo- graphic micromorphology and the worn surface morphology were observed by photomicrograph and scanning electron micro- scope. The results show that the density and hardness of the brake materials are increased firstly then decreased along with the increase of compaction pressure. The brake materials prepared under the compaction pressure of 900 MPa have high density and hardness, big and stable friction coefficient, and little wear loss.

关 键 词：压制压力 硬度 摩擦磨损 粉末冶金材料 

分 类 号：TH117.1[机械工程—机械设计及理论]