期刊
TRIBOLOGY INTERNATIONAL
卷 57, 期 -, 页码 38-45出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2012.07.004
关键词
Metal matrix composite; Scratch; Friction model; Wear
资金
- Key Project of Hunan Science and Technology [S2011G20124486]
Microscratch tests were carried out on Cu-graphite composites with graphite content of 0-30 vol% and normal loads of 0.5-2 N. Scratch grooves generated by the plastic deformation of surfaces were characterized for detailed friction and wear mechanisms investigation. The influence of normal load and graphite content on friction coefficient was also studied. It is found that the dominant wear mechanism transits from ploughing to micro-cutting with increasing the normal loads. A friction model for knowing the contribution of ploughing and adhesion components to friction is presented. This friction model is useful in understanding the friction mechanism of composites during scratching. (C) 2012 Elsevier Ltd. All rights reserved.
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