ZHAO Yuncai, ZUO Liangtao

(School of Mechanical and Electrical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000)

Abstract: he action of SiC fiber on the friction behavior of composite materials was tested by a US-made nano and micro tribometer UMT-2. Then effects of fiber content and friction behavior on the tribological properties of the composite material were discussed, and the mechanism for the wear-out failure of fiber reinforced aluminosilicate glass ceramics was studied.Results show: the friction coefficient of SiC fiber-reinforced glass ceramics increased gradually from a relatively low to a stable with the time of contact friction, but fluctuates markedly after that; with the increase of the friction time, the wear loss of the composite material increased; the lower the wear resistance, the larger the wear loss. Adhesive friction occurred between the body of the composite material and the contact surface, but the primary wear-out failure still existed in abrasive wear and fatigue wear. The interfacial binding strength of the composite material and the fiber arrangement of the friction surface had great impact on its tribological properties.

Keywords: fiber-reinforced glass-ceramic composite, friction behavior, wear-out failure