Patent ID: 8420006

Claim:
A method of manufacturing a translucent ceramic, the method comprising: mixing a raw powder, a plasticizer and an organic binder and kneading them to obtain a compound, wherein the raw powder contains an aluminum oxide powder and a magnesium oxide powder, the plasticizer contains phthalate ester consisting of phthalic acid dibutyl, and the organic binder contains a first organic component and a second organic component of which decomposition temperature is lower than a decomposition temperature of the first organic component, wherein the first organic component is polystyrene and ethylene-vinyl acetate copolymer, and a content of the polystyrene and the ethylene-vinyl acetate copolymer is 26:30; molding the compound in a predetermined shape by an injection molding method to obtain a green body; debinding the organic binder contained in the green body to obtain a brown body; and sintering the brown body to obtain a sintered body of the translucent ceramic; wherein the kneading step is carried out at a temperature in the range of 60 to 120° C. after the raw powder, the plasticizer and the organic binder are preheated at a temperature in the range of 100 to 175° C.