PRODUCTION OF EASY-TO-SINTER HYDROXYAPATITE POWDER

PURPOSE:To obtain the titled powder having an excellent sintering property and capable of obtaining a translucent high-density sintered body by replacing the water on the particles of hydroxyapatite which has been synthesized on a wet basis with an org. liq. having low coercive power, calcining the...

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Hauptverfasser:	OKAMOTO TOYOSHIGE, NAKAI ZENJIRO, FUTAGAMI TOSHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS THEREOF CONCRETE INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY NON-METALLIC ELEMENTS REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain the titled powder having an excellent sintering property and capable of obtaining a translucent high-density sintered body by replacing the water on the particles of hydroxyapatite which has been synthesized on a wet basis with an org. liq. having low coercive power, calcining the material, then dispersing the material in a liq., and treating the material with ultrasonics. CONSTITUTION:The water on the surface of the particles of hydroxyapatite obtained by set synthesis and the water between the particles are replaced with an org. liq. (e.g., ethanol) having low coercive power, and then the material is dried. Calcination for globurizing is carried out, and then the calcined powder is dispersed in a liq. (e.g., ethanol), and cracked by ultrasonic treatment. Agglomeration in the drying stage is prevented by the replacement with the org. liq. Apatite powder having an excellent sintering property and capable of obtaining high-density, transparent under specified sintering conditions, sintered body can be obtained by further ultrasonic treatment.