ALUMINA ZIRCONIA CERAMIC POWDER AND MANUFACTURE

A ceramic alumina/zirconia powder containing 10-25% by weight of zirconia consisting of 10-55% by volume of a monoclinic phase and 45-90% by volume of a tetragonal phase and not more than 4 mol % of hafnium oxide, as well as 75-90% by weight of alumina consisting of a delta -phase and a theta -phase...

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Bibliographische Detailangaben
Hauptverfasser:	KURITA RIYUUICHI, HORI SABUROU
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F CONCRETE INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	A ceramic alumina/zirconia powder containing 10-25% by weight of zirconia consisting of 10-55% by volume of a monoclinic phase and 45-90% by volume of a tetragonal phase and not more than 4 mol % of hafnium oxide, as well as 75-90% by weight of alumina consisting of a delta -phase and a theta -phase, and having no alpha -phase, the powder having a two-phase structure in which the zirconia phase is dispersed in the alumina phase, and an average particle size of not more than 1000 A, gives, on compression and calcination at 800-1250 DEG C, sintered products having an outstanding density and bending strength.