| 摘要 |
PURPOSE:To obtain a dence ceramic sintered body causing no breakage nor deformation and having sufficiently high handleability in a short time by performing preparation of a ceramic molded body by centrifugal molding and sintering under hot isostatic pressing in combination. CONSTITUTION:A slurry contg. ceramic particles is casted in a gypsum mold 1 from a hopper 4, and the gypsum mold 1 is rotated together with a metallic frame 2 around a center of the shaft of the metallic frame as a center of rotation with a rotary driven roller 5, forming thus a slurry layer along an internal peripheral surface of the gypsum mold 1 by the effect of centrifugal force. Further, the thickness of the slurry layer is increased by the water absorbing effect of the gypsum mold 1, forming thus a dense ceramic molded body A on the internal peripheral surface of the gypsum mold 1. Then, the molded body A is removed from the gypsum mold 1 and dried and sealed tightly in a capsule B. A ceramic sintered body is obtd. by subjecting the sealed material to hot isostatic press sintering. |
