| 摘要 |
PURPOSE:To obtain a composite sliding material having improved wear resistance, self-lubricity, seizure resistance, etc. by impregnating a high-polymer material at a high density to a porous sintered body. CONSTITUTION:About 1-65vol% high-polymer material powder is added to metallic powder of Fe, Ni, etc., and after the powders are agitated and mixed, the mixture is molded under the pressurization. The molded body is subjected to a heating treatment to gasify the high-polymer material and is degreased. The resulted molding is further heated to sinter the base phase metal and if necessary the molding is further subjected to surface treatments including a heat treatment, hardening, carburizing, nitriding, etc. The high-polymer material which is thermoplastic resins such as nylon and PE is impregnated to the resulted porous sintered body and further the molding is again subjected to compression molding to impregnate the high-polymer material to the high density of about >=85% theoretical density. The resulted composite body is subjected to the heating treatment to the sintering temp. of the above-mentioned high- polymer material, by which the composite sliding materials having high hardness and high quality is obtd. |
