METAL MATRIX COMPOSITE EXCELLENT IN CHARACTERISTIC OF LOW FRICTION AND WEAR RESISTANCE

摘要

PURPOSE:To obtain a metal matrix composite excellent in characteristics of low friction and wear resistance by adding specific amounts of ceramic whiskers, etc., to a matrix metal, such as metals of Al, Mg, and Cu, containing specific amounts of Sn, Pb, Bi, In, etc. CONSTITUTION:A reinforcement consisting of = at least one kind among ceramic whiskers, ceramic fibers, and ceramic grains is added by 5-40vol.% to a matrix metal consisting of 3-30wt.% of = at least one metal element among Sn, Pb, Bi, and In and the balance = at least one metal among Al, Mg, and Cu, Al alloy Mg alloy, or Cu alloy. By the addition of the above metal elements Sn, Pb, Bi, and In, coefficient of friction is reduced and also frictional peeling action on mating material is reduced. Further, by the incorporation of the ceramic reinforcement, wear resistance is remarkably improved. By this method, the metal matrix composite excellent in characteristics of low friction and wear resistance can be obtained.