| 摘要 |
PROBLEM TO BE SOLVED: To obtain a sliding ceramic material having high bonding strength of hard carbon film to the sliding face and long peeling life by coating the sliding face of a sliding ceramic material with a hard carbon film interposing a specific WC mixture composed mainly of WC. SOLUTION: This sliding ceramic material having a hard carbon film is produced by coating the sliding face of a sliding ceramic material 1 with a hard carbon film 3 interposing a film 2 consisting of a WC mixture composed mainly of WC and containing at least one component selected from silicon compound, aluminum compound, titanium metal, titanium compound and niobium compound between the sliding face and the carbon film. The aluminum compound in the WC mixture is e.g. Al2 O3 , the silicon compound is e.g. SiC or Si3 N4 , the titanium compound is e.g. TiC and the niobium compound is e.g. NbN. The thickness of the film 2 of the WC mixture is preferably 0.1-1μm.
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