| 摘要 |
PURPOSE:To facilitate molding without requiring operation for pH adjustment, etc., by adding water, a deflocculant and dispersant to a mixture composed of tricalcium phosphate, calcium carbonate and additive to prepare a slurry, putting the slurry into a gypsum mold and heating a slip cast molding piece, thereby obtaining the sintered body of apatite. CONSTITUTION:The water, the deflocculant and the dispersant is added to the mixture composed of the tricalcium phosphate, the calcium carbonate and the additive to prepare the slurry and the slurry is put into the gypsum mold and is slip cast molded, then the slip cast molding piece is heated, by which the sintered body of the apatite is obtd. The ratio of the tricalcium phosphate to the calcium carbonate is specified to 3:1 by molar ratio and the ratio of the water is specified to <=50% by weight. The tricalcium phosphate is formed of a mixture composed of an alpha type and a beta type and the mixing ratio thereof is specified to the alpha type: beta type=0:1 to 3:1. Further, volatile camphor is used for the additive and the ratio thereof is specified to >=4% by the weight ratio to the slip. The heating temp. of the molded piece is specified to 600 to 1200 deg.C. |
