氧化铝颗粒增强铜基复合材料的摩擦磨损性能

摘要

A12 O3p/Cu composites was prepared by powder metallurgy method. The effects of Al2O3 contents and rotating speeds on wear resistance and friction coefficient of the composites were study. The results show that the wear mass decreased and then increased with increase of Al2O3 content. The wear resistance was best when volume fraction of AhO3 was 15%. Wear mass and friction coefficient raised and then decreased with increase of rotating speed. The wear was most serious and the friction coefficient was biggest when rotating speed was 400 r · min^-1. Wear mechanism mainly was adhesive wear and abrasive wear.%利用粉末冶金法制备了Al2O2颗粒增强铜基复合材料，分析了Al2O2含量和转速对复合材料耐磨性能以及摩擦因数的影响。结果表明：复合材料的磨损量随AlzOs含量的增加先减小后增大，Al2O2体积分数为15％时耐磨性能最好；磨损量以及摩擦因数随着转速的增大先增大后减小，在400r·min^-1时的磨损最严重，摩擦因数最大；磨损主要机制是粘着磨损和磨粒磨损。