| 摘要 |
PURPOSE:To provide a wear resistant sliding member having improved resistance to load, wear and seizure by subjecting a metallic base body to porous chromium plating and packing Cr2O3 ceramics or composite ceramics contg. Cr2O3 into the recesses of the plating. CONSTITUTION:The surface of the metallic base body such as cast iron is subjected to porous chromium plating and the ceramics are packed into the fine recesses of the plating. A concn. aq. H2CrO4 soln. is used for the Cr2O3 ceramic source and the powder of >=1 kinds of compds. among SiO2, ZrO2, Al2O3, SiC, Si3N4, LiF and CaF2 and the concd. aq. H2CrO4 soln. of the Cr2O3 source are made into a slurry and are used for the composite ceramic source. The plated metallic base body is immersed into such concd. aq. soln. or slurry and is held; thereafter the base body is thoroughly dried, is heated for about 30-60min at 370-500 deg.C and is cooled to pack the ceramic source into the fine recesses formed to the plating. The ceramic film sticking to the plating surface is removed and the sliding surface consisting of the hard chromium surface and ceramic surface is obtd. |
