| 摘要 |
PURPOSE:To provide superior wear resistance and seizure resistance, by constituting a sliding member of the primary and the secondary member abutting each other and relatively sliding, by forming the primary member of a fiber-reinforced metallic composite material in which fibrous reinforcements appear at the sliding surface and which has recessed parts in the matrix surface of the sliding surface, and the specifying the sliding-surface hardness of the secondary member. CONSTITUTION:The sliding member is composed of the primary and the secondary member abutting each other and relatively sliding. The sliding surface part of the primary member to the secondary member is constituted of the fiber-reinforced metallic composite material having alumina-silica fibers 1 as fibrous reinforcements and also having Al alloy 2 as a matrix. The above sliding surface 4 is subjected to electrolytical etching to allow a part of the fibrous reinforcements to appear at the sliding surface, so that recessed parts 3 are formed in the matrix surface at the spaces among the exposed fibrous reinforcements. The average depth Di is regulated to >=1.5mu and also the ratio of average depth Di to pit diameter Wi is regulated to >=0.01. Moreover, the sliding surface of the secondary member is constituted of a steel having a hardness Hv of 400-900.
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