| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a metal composite material capable of maintaining desired wear resistance and making sliding life longer, and to provide a method for manufacturing the metal composite material. <P>SOLUTION: The metal composite material is obtained by dispersing porous ceramic particles having fine pores each having an average pore diameter of 1 to 80 nm in the metal basic material, and on the outer surface of the metal composite material, the ceramic particles keeping the porous-state are exposed. Since a lubricating oil is infiltrated into the fine pores of the ceramic particles exposed on the outer surface and held therein, the wear resistance can be improved and the sliding life can be made longer. The metal composite material is sintered at a prescribed sintering temperature to form a preform including the porous ceramic particles having fine pores each having an average pore diameter of 1 nm to 80 nm, and the preform is then impregnated with a molten metal and the outer surface of the preform is polished to form the metal composite material. <P>COPYRIGHT: (C)2012,JPO&INPIT |
