| abstract |
(57) [Summary] [Problem] A solidified phosphate having excellent mechanical strength, particularly a solidified porous phosphate (eg, hydroxyapatite) And solidified calcium carbonate. SOLUTION: A hydrated phosphate compound or calcium carbonate hydrate, which is a water-containing substance, is filled in, for example, a molding machine mold, subjected to hydrothermal hot pressing, and then water is discharged. A hydrated calcium phosphate compound (calcium monohydrogen phosphate hydrate) and another calcium compound (calcium hydroxide) are subjected to hydrothermal hot pressing to have a bulk density of 1.5 to 2. A porous hydroxyapatite molded article having a tensile strength of 5 g / cm 3 and a tensile strength of 3 MPa or more is obtained. |