蠕墨铸铁/40Cr配副干摩擦三维表面形貌特征研究  

3-D Topographical Characteristics of Dry Sliding Surface of Compacted Graphite Irons Coupled with Chromium Steel Disk

作　　者：张永振[1] 沈百令[1] 寇宏超 朱均[2] 

机构地区：[1]洛阳工学院材料工程系,河南洛阳471039 [2]西安交通大学润滑理论及轴承研究所,陕西西安710048

出　　处：《摩擦学学报》2000年第6期407-411,共5页Tribology

基　　金：河南省杰出青年基金资助项目! (1998)

摘　　要：采用探针式三维表面形貌仪考察了销 -盘式干摩擦试验条件下蠕墨铸铁试销磨损表面的三维形貌特征 .结果表明 :试销磨损表面主要呈现犁沟型、孤岛型及二者的混合型 3种形貌特征 ,其中具有孤岛型磨损表面形貌特征的试样的摩擦系数较高 ,磨损率较低 ;而具有犁沟型磨损表面形貌特征的试样的摩擦系数最低 ,磨损率最高 .分析表面形貌参数发现 :犁沟型表面形貌具有最大的表面高度偏差和表面空隙率及高负值的表面高度分布参数 ;而孤岛型表面形貌的表面高度偏差和表面空隙率最小 。The topographical characteristics of the worn surfaces of compacted graphite iron (coded as C G iron) in dry sliding against 40Cr steel were investigated with a 3 D surface profilometer. The topographical parameters have been analyzed by taking into account the thermal effect during the friction process. As the results, three kinds of typical topographical features have been observed for the worn surfaces of C G iron with various P content. Namely, C G iron with 0.05% P, 1.30% P, and 0.70% P show worn surfaces characterized by groove ridge, peak pits and their combined topography. The C G iron specimen with peak pits type worn surface topography showes the lowest wear rate and highest friction coefficient, while that with groove ridge type worn surface topography shows the highest wear rate and lowest friction coefficient. The groove ridge type worn surface has a relatively large value of surface height deviation and void volume ratio and negative large value of skewness, which is contrary to the peak pits topography.

关 键 词：蠕墨铸铁 干滑动摩擦磨损 表面形貌 

分 类 号：TG143.5[一般工业技术—材料科学与工程] TH117.1[金属学及工艺—金属材料]