MIXED RARE EARTH SALT AND RAW MATERIAL FOR CERIUM-BASED ABRASIVE

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PROBLEM TO BE SOLVED : To provide a raw material for an abrasive in which sintering is possible even if a roasting temperature is comparatively low in producing an abrasive and there is no fear of an abnormal grain growth. SOLUTION : The mixed rare earth salt is produced by mixing a cerium-based rare earth carbonate and a cerium-based rare earth oxide, wherein the loss on ignition when heating at 1, 000°C for one hour is in the range of 0.05-5.0% on the dry weight basis. The cerium-based abrasive raw material comprises the mixed rare earth salt as a principal component, wherein the loss on ignition when heating at 1, 000°C for one hour is in the range of 0.05-5.0% on the dry weight basis. COPYRIGHT : (C)2007, JPO&INPIT