Tribotechnical properties of sintered bronze-based composites reinforced with Al-based hard particulates
Larisa Dyachkova, Eugene Feldshtein, Andrey Letsko, Przemysław Kiełek, Tomasz Kiełek
Quarterly No. 2, 2017 pages 84-89
DOI:
keywords: metal-matrix composites (MMCs), surface analysis, friction, wear behavior
abstract This paper describes the changes in the tribotechnical properties of CuSn10 sintered bronze and MMCs based on this bronze reinforced with ultrafine composite Al-based powders. It was observed that the presence of hard particulates in the MMCs leads to a decrease in the friction coefficient and, particularly, wear rate. The presence of Al-based particulates in the MMC reduces the wear rate considerably. It decreases in the direction of FeAl → NiAl → Ti-Al-Cr particulates and for the best MMC composition the gain is about 20 times. In the MMC wear process, micro-craters are formed on the contact surface and it is the principal reason for the decrease in the wear rate.