ALUMINA SUBSTRATE AND RESISTOR USING SAME

An alumina substrate according to the present disclosure has a pore on a surface thereof and is composed of an alumina-based ceramic that contains 96% by mass or more of Al as a value of an Al2O3equivalent among 100% by mass of all constituent components thereof. Furthermore, a surface area occupanc...

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Bibliographische Detailangaben
Hauptverfasser:	TOMITA, Yuuki, MATSUSHITA, Kouji
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY LIME, MAGNESIA MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METALLURGY PRINTED CIRCUITS REFRACTORIES RESISTORS SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	An alumina substrate according to the present disclosure has a pore on a surface thereof and is composed of an alumina-based ceramic that contains 96% by mass or more of Al as a value of an Al2O3equivalent among 100% by mass of all constituent components thereof. Furthermore, a surface area occupancy of the pore is 1.5% or greater and 6.0% or less. Furthermore, an average value D of an equivalent circle diameter of the pore is 0.9 µm or greater and 2.0 µm or less. Then, a standard deviation Dσ of an equivalent circle diameter of the pore is 1.0 µm or less.