新型铸造铝青铜的润滑摩擦性能  

Lubrication friction performance ofnew as-cast aluminum bronze

作　　者：徐建林[1] 陈超[2] 喇培清[3] 王智平[1] 李海兰[1] 刘明朗[1] 朱小武[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,兰州730050 [2]兰州理工大学机电工程学院,兰州730050 [3]中国科学院兰州化学物理研究所固体润滑国家重点实验室,兰州730000

出　　处：《中国有色金属学报》2004年第6期917-921,共5页The Chinese Journal of Nonferrous Metals

基　　金：甘肃省自然科学基金资助项目(ZS032B25029);教育部"春晖计划"资助项目

摘　　要：对新型高强度、高耐磨铝青铜合金(代号HSWAB)在润滑条件下的摩擦性能进行了分析。结果表明,HSWAB合金的高耐磨性主要取决于其显微组织,在润滑条件下磨损失效形式主要为磨粒磨损与粘着磨损。由于HSWAB合金基体强度高,强化相呈弥散分布,在润滑摩擦过程中形成高强度的骨架和光滑的支撑面,磨粒细小、圆整、数量少;在润滑及骨架与光滑面的支撑作用下,粘着磨损不能进一步发展,并且合金在摩擦过程中无氧化与裂纹现象产生。The friction properties and friction mechanism of a new high strength and wear-resistant aluminum bronze named HSWAB alloy were analyzed in detail under lubrication condition. The results show that the high wearability of HSWAB alloy primarily depends on its microstructure. The major wear mechanisms are attrition wear and adhesive wear when HSWAB alloy against 45~# steel under lubrication condition. Because HSWAB alloy has high hardness metal matrix and small dispersion strengthening phases, in lubrication friction, the matrix and some strengthening phases become a high-strength skeleton body and smooth bearing plate, another strengthening phase becomes abrasive particles that are small, near-spherical and their number is small. Because of lubrication oil, supporting effect of skeleton body and smooth bearing plate, the adhesive wear can't further develop. The oxidization phenomenon and crack initiation on wear surface of HSWAB alloy were not found.

关 键 词：铝青铜 摩擦性能 润滑条件 

分 类 号：TG111.5[金属学及工艺—物理冶金]