Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
ALUMINA SINTERED BODY AND MANUFACTURING METHOD THEREOF
To provide an alumina sintered body having small dielectric loss tangent (tanδ) and a manufacturing method thereof.SOLUTION: An alumina sintered body of the present invention is an alumina-based sintered body containing 99.50 mass% or over and 99.95 mass% or under of Al2O3 as well as Na and Si. With respect to a surface layer part A in a given cross section and a central part B in the cross section in a depth direction from the surface layer part A, a concentration ratio of Na and Si in the surface layer part A, (Na/Si ratio), is smaller than a concentration ratio of Na and Si in the central part B, (Na/Si ratio).SELECTED DRAWING: None
【課題】誘電正接（ｔａｎδ）が小さなアルミナ焼結体及びその製造方法を提供する。【解決手段】本発明にかかるアルミナ焼結体は、Ａｌ2Ｏ3を９９．５０質量％以上、９９．９５質量％以下含むと共に、ＮａとＳｉを含むアルミナ質焼結体であって、前記任意の断面における表層部Ａと、前記表層部Ａから深さ方向における前記断面の中心部Ｂにおいて、前記表層部ＡでのＮａとＳｉの濃度比（Na/Si比）が、前記中心部ＢでのＮａとＳｉの濃度比（Na/Si比）よりも小さい。【選択図】なし
ALUMINA SINTERED BODY AND MANUFACTURING METHOD THEREOF
To provide an alumina sintered body having small dielectric loss tangent (tanδ) and a manufacturing method thereof.SOLUTION: An alumina sintered body of the present invention is an alumina-based sintered body containing 99.50 mass% or over and 99.95 mass% or under of Al2O3 as well as Na and Si. With respect to a surface layer part A in a given cross section and a central part B in the cross section in a depth direction from the surface layer part A, a concentration ratio of Na and Si in the surface layer part A, (Na/Si ratio), is smaller than a concentration ratio of Na and Si in the central part B, (Na/Si ratio).SELECTED DRAWING: None
【課題】誘電正接（ｔａｎδ）が小さなアルミナ焼結体及びその製造方法を提供する。【解決手段】本発明にかかるアルミナ焼結体は、Ａｌ2Ｏ3を９９．５０質量％以上、９９．９５質量％以下含むと共に、ＮａとＳｉを含むアルミナ質焼結体であって、前記任意の断面における表層部Ａと、前記表層部Ａから深さ方向における前記断面の中心部Ｂにおいて、前記表層部ＡでのＮａとＳｉの濃度比（Na/Si比）が、前記中心部ＢでのＮａとＳｉの濃度比（Na/Si比）よりも小さい。【選択図】なし
ALUMINA SINTERED BODY AND MANUFACTURING METHOD THEREOF
アルミナ焼結体及びその製造方法
NAKAGAWA TAKUYA (Autor:in) / FUKAZAWA YUJI (Autor:in)
10.07.2023
Patent
Elektronische Ressource
Japanisch
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