MULTILAYER CERAMIC CAPACITOR AND METHOD FOR MANUFACTURING SAME
Provided are: a highly reliable multilayer ceramic capacitor, the insulation resistance of which changes little over time in a high-temperature load test, and which has excellent resistance to deterioration of the insulating properties; and a method for manufacturing the multilayer ceramic capacitor...
Saved in:
Main Authors | , , , |
---|---|
Format | Patent |
Language | English French Japanese |
Published |
13.02.2014
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Provided are: a highly reliable multilayer ceramic capacitor, the insulation resistance of which changes little over time in a high-temperature load test, and which has excellent resistance to deterioration of the insulating properties; and a method for manufacturing the multilayer ceramic capacitor. A multilayer body is configured to contain Si, Mn, Al and V, and a perovskite compound that contains Sr, Ba, Zr and Ti and that optionally contains Ca, and to satisfy, when the total content of Zr and Ti is taken as 100 parts by mole, the following conditions: [a] the total content (m) of Sr, Ba and Ca satisfies 100 <= m <= 105; [b] the Si content (a) satisfies 0.1 <= a <= 4.0; [c] the Mn content (b) satisfies 0.1 <= b <= 4.0; [d] the Al content (c) satisfies 0.01 <= c <= 3.0; [e] the V content (d) satisfies 0.01 <= d <= 0.3; [f] the molar ratio (w) of Sr to the total of Sr, Ba and Ca satisfies 0.60 <= w <= 0.95; [g] the molar ratio (y) of Ca to the total of Sr, Ba and Ca satisfies 0 <= y <= 0.35; [h] the molar ratio (z) of Zr to the total of Zr and Ti satisfies 0.92 <= z <= 0.98; the total of the value of (w) and the value of (y) satisfies 0.6 <= w + y <= 0.95; and the crystal grains have an average grain size of 1.2 mum or less.
L'invention concerne : un condensateur céramique multi-couches hautement fiable, dont la résistance à l'isolation change peu au cours du temps dans un essai de charge à température élevée, et qui a une excellente résistance à la détérioration des propriétés d'isolation ; et un procédé de fabrication du condensateur céramique multi-couches. Un corps multi-couches est configuré pour contenir Si, Mn, Al et V, et un composé pérovskite qui contient Sr, Ba, Zr et Ti et qui contient éventuellement Ca, et pour satisfaire, lorsque la teneur totale de Zr et Ti est prise comme 100 parties en mole, les conditions suivantes : [a] la teneur totale (m) de Sr, Ba et Ca satisfait 100 <= m <= 105 ; [b] la teneur en Si (a) satisfait 0,1 <= a <= 4,0 ; [c] la teneur en Mn (b) satisfait 0,1 <= b <= 4,0 ; [d] la teneur en Al (c) satisfait 0,01 <= c <= 3,0 ; [e] la teneur en V (d) satisfait 0,01 <= d <= 0,3 ; [f] le rapport molaire (w) de Sr au total de Sr, Ba et Ca satisfait 0,60 <= w <= 0 95 ; [g] le rapport molaire (y) de Ca au total de Sr, Ba et Ca satisfait 0 <= y <= 0,35 ; [h] le rapport molaire (z) de Zr au total de Zr et Ti satisfait 0,92 <= z <= 0,98 ; le total de la valeur de (w) et de la valeur de (y) satisfait 0,6 <= w + y <= 0,95 ; et les grains cristallins ont une dimension moyenne de grains de 1,2 mum ou moins. |
---|---|
Bibliography: | Application Number: WO2013JP62558 |