热挤压AlSiPb合金磨损表面膜的作用及组成  

The properties and composition of the wear surface film of hot extruded Al-Si-Pb bearing alloy

作　　者：吕晓霞[1] 陆有[1] 许德尉[2] 安健[1] 

机构地区：[1]吉林大学材料科学与工程学院 [2]吉林大学链传动研究所,吉林长春130025

出　　处：《材料科学与工艺》2004年第2期209-211,共3页Materials Science and Technology

基　　金：国家教委博士点基金资助项目(1999018513).

摘　　要：为探讨Al-Pb轴承合金的磨损机理,研究了热挤压Al-Si-Pb轴承合金的磨损表面膜作用及组成.研究表明:磨损载荷在240～280N时,摩擦因数与载荷关系曲线中出现一低谷,磨损率与载荷关系曲线中出现一高原现象,观察发现,在此载荷范围内磨损试样表面形成了一层黑色膜,黑色膜降低了Al-Si-Pb合金的摩擦因数和磨损率;能谱分析表明黑色润滑膜中含有Al、Al2O3、Fe2O3、PbSiO3和Si等物质.In order to investigate the wear mechanism of Al-Pb alloy, this article investigates the properties and the composition of the wear surface of the hot extruded Al-Si-Pb bearing alloy. Results show that the friction coefficient curve of the alloy appears to be a minimum value between 240 N and 280 N wear load, while the wear rate curve reaches a plateau peak. It is found by an optical microscope and SEM that the wear surface of the samples forms a black thin film. X-ray photoelectron spectroscopy (XPS) analysis reveales that a black thin film is composed of Al, Al_2O_3,Fe_2O_3, PbSiO_3 and Si. This black thin film decreases the friction coefficient and wear rate of the alloy.

关 键 词：热挤压 Al-Si-Pb 轴承合金 磨损 表面膜 铝硅铅合金 

分 类 号：TG146.21[一般工业技术—材料科学与工程]