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A ceramic containing, in mass %:Si3N4: 20.0 to 60.0%,ZrO2: 25.0 to 70.0%,at least one selected from SiC and AlN: 2.0 to 17.0%, where AlN is 10.0% or less,at least one selected from MgO, Y2O3, CeO2, CaO, HfO2, TiO2, Al2O3, SiO2, MoO3, CrO, CoO, ZnO, Ga2O3, Ta2O5, NiO and V2O5: 5.0 to 15.0%, wherein F...

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Bibliographische Detailangaben
Hauptverfasser:	MORI, Kazumasa, YAMAGISHI, Wataru, ETO, Shunichi
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES METALLURGY PHYSICS REFRACTORIES SLAG TESTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	A ceramic containing, in mass %:Si3N4: 20.0 to 60.0%,ZrO2: 25.0 to 70.0%,at least one selected from SiC and AlN: 2.0 to 17.0%, where AlN is 10.0% or less,at least one selected from MgO, Y2O3, CeO2, CaO, HfO2, TiO2, Al2O3, SiO2, MoO3, CrO, CoO, ZnO, Ga2O3, Ta2O5, NiO and V2O5: 5.0 to 15.0%, wherein Fn calculated from the following equation (1) satisfies 0.02 to 0.40. This ceramic can be laser machined with high efficiency.Fn=(SiC+3AlN)/(Si3N4+ZrO2) (1)