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Dry Sliding Tribological Characteristics of SiC Particle-reinforced Aluminum Composites in Brakes
CHEN Yue,DAI Baolin,SHANGGUAN Bao,ZHANG Yongzhen,SUN Lemin 한국트라이볼로지학회 2002 한국트라이볼로지학회 학술대회 Vol.2002 No.10
The dry sliding tribological characteristics were investigated using SiC particle-reinforced aluminum composites against semi-metallic frictional materials. The experimental results have indicated that, whether under the condition of continuous braking or not, the wear rates of SiC particle reinforced composites are much less than that of gray cast iron which is used as one of the common brake disk materials. At the same time, their frictional coefficients are about the same.
ZHANG Yongzhen,SUN Gesen,SUN Lemin,LIU Weimin,SHANGGUAN Bao,Chen Yue 한국트라이볼로지학회 2002 한국트라이볼로지학회 학술대회 Vol.2002 No.10
Based on 3-D surface morphology measurements of C.G. irons, the fractal analyses were made on relationship between dry sliding surface morphology and the fractal dimension. It is revealed that the values of fractal dimensions (Df) of sliding surfaces are in the range between 1-2, which are closely related to the surface morphologies. With the increase in depths of grooves or pits, the Df values increase. At the same lime, the increases in densities of the grooves also cause the Df values to increase. At last, relationship among Df and friction coefficient as well as wear rate is discussed.