Comparison of tribological properties of industrial low friction coatings

来源期刊：中国有色金属学报(英文版)2002年第1期

论文作者：王吉会 Hua Chen E. Wieers L.M. Stals J.P. Celis

文章页码：78 - 82

Key words：low friction coatings;fretting;relative humidity

Abstract: MX₂ (M=Mo,W;X=S,Se) and DLC (a-C:H and WC/C) are the two kinds of typical low friction coatings widely used in industry.The friction and wear properties of these two kinds of coatings marked as MOVIC,MOST,MoSe₂/Ni, WSe₂,a-C: H and WC/C coatings were determined by fretting tests in ambient air of different humidity.The results show that the coefficient of friction of MX₂ coatings increases when the relative humidity of air increases whereas the coefficient of friction DLC coatings decreases with the increasing of relative humidity.MOVIC and WSe₂ coatings have a poor friction and wear resistance because of non-basal planes (100) and (101) parallel to the surface in the MOVIC coating, or the rough and porous surface of WSe₂ coatings.Among these six coatings,MoSe₂ /Ni and WC/C coatings have the highest wear resistance which seems to be unaffected by the relative humidity.