CERIUM OXIDE-BASED ABRASIVE MATERIAL

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PROBLEM TO BE SOLVED : To provide an abrasive material suitably applied to polish glass, which is a high purity cerium oxide-based abrasive having ≥95 mass% CeO2/TREO (total rare earth oxides) and a large abrasion speed and reduced in generating abrasion cracks. SOLUTION : The cerium oxide-based abrasive has 1.7-3.0 g/mL apparent density by a tap method and contains ≥95 mass% CeO2/TREO. Preferably, the fluorine content is ≤0.5 mass% and the half-value width (2[!theta!]) of the maximum peak of cerium oxide by X ray diffraction measurement is 0.10-0.50°. COPYRIGHT : (C)2008, JPO&INPIT