Tribological characteristics of new series of Al-Sn-Si alloys

来源期刊：中国有色金属学报(英文版)2003年第4期

论文作者：袁鸽成 张新明 娄燕雄 黎祚坚

文章页码：774 - 780

Key words：Al-Sn-Si alloys; wear; friction; tribology characteristic

Abstract: Tribological characteristics of new series of Al-Sn-Si alloys were investigated by means of pin-disk types of wear testing machines, OM, SEM and EDAX. Rules about the influence of Sn, Si content and load on the friction and wear characteristics of the alloys were ascertained. The friction factor and wear rate of the alloys decrease with increasing Sn content, the wear rate decreases but the friction factor varies hardly with increasing Si content. The friction factor of the alloys increases slightly and the wear rate increases observably with increasing load in the range of 10-80N. The wear mechanism of Al-Sn-Si alloys consists of ‘plough’ action and abrasive wear below 30N; the adhesive and delamination mechanism are shown in the range of 30-80N. The tribological characteristics of Al-Sn-Si system are superior to those of Al-Sn or Al-Si systems due to their “peritectic-type” island-shape microstructure of Si surrounded with Sn.