2002•Unpublished venueRequires access
Dry friction and wear properties of intermetallics MoSi_2 against 45 steel
Zhang Hou
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Abstract
The dry friction and wear properties of intermetallics MoSi 2 against 45 steel under different wear loads were investigated on an M 2 type tester. Microrphology of the surface was observed and elemental composition of the worn surface was determined by a scanning electron microscope equipped with electron microprobe analyzer in order to analyze the mechanisms of friction and wear. The results show that the formation and drop of SiO 2 resultsin the friction coefficient changing with the friction distance irregularly. The material of MoSi 2 has a good wear resistance, and its stable wear rate is less than 0.04 g·km -1 . With the wear load increasing, the main friction mechanisms are changed from microslip and plastic forming to adhesive effects, and the main wear mechanisms are varied from abrasive wear, oxidative fatigue wear to adhesive wear.8figs.,15refs.