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Friction and Wear of Metal Matrix–Graphite Fiber Composites

1986; Linguagem: Inglês

10.1016/b978-0-444-42524-9.50010-7

2543-1218

Z. Eliezer,

Mechanical stress and fatigue analysis

The friction and wear behavior of metal matrix graphite fiber composites is dependent on manufacturing, operational, and environmental parameters. In particular, the type of fiber employed seems to have a significant influence. The graphite fibers are bent and broken at the subsurface during sliding. It is found that composites containing low modulus fibers exhibit, in general, lower wear rates than the high modulus composites. It is suggested that this behavior may be due, in part, to the larger amount of work needed to bend and break the low modulus compared with the high modulus fibers. The friction and wear behavior of various composites is also significantly influenced by the fiber orientation with respect to the sliding interface. Based on experiments conducted on aluminum matrix composites at relatively low sliding speed, a new wear equation is proposed. Some potential tribological applications of metal matrix–graphite fiber composites are discussed.