Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Dielectric porcelain composition and ceramic capacitor
The purpose of the present invention is to provide a novel dielectric ceramic composition having a high relative permittivity, low dielectric loss, an increase in relative permittivity under DC voltage, and a large maximum increase rate. A dielectric ceramic composition according to the present invention contains an oxide (I) of A, R, and B, the oxide (I) having a tetragonal tungsten bronze structure, the A including K and Ba, the R being at least one selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, and Sc, the B being at least one selected from the group consisting of Nb and Ta, and the Ta being at least one selected from the group consisting of Nb and Ta. The amount of substance of the B is 4.75-5.25 moles (inclusive) with respect to 2 moles of the A, and the total molar fraction of the A, the R, and the B among all the metal elements included in the dielectric ceramic composition is 0.975 or more.
本发明的目的在于，提供具有高的相对介电常数、介电损耗小、在直流电压下相对介电常数增加、并且其最大增加率大的新型的电介质瓷器组成物。本发明的电介质瓷器组成物包含A、R以及B的氧化物(I)，所述氧化物(I)具有正方晶钨青铜型构造，所述A包含K以及Ba，所述R是从包含La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu、Y以及Sc的组中选择的至少1个，所述B是从包含Nb以及Ta的组中选择的至少1个，所述B的物质的量相对于2摩尔的所述A是4.75摩尔以上且5.25摩尔以下，所述电介质瓷器组成物中包含的全部的金属元素中的所述A、所述R以及所述B的合计的摩尔分数是0.975以上。
Dielectric porcelain composition and ceramic capacitor
The purpose of the present invention is to provide a novel dielectric ceramic composition having a high relative permittivity, low dielectric loss, an increase in relative permittivity under DC voltage, and a large maximum increase rate. A dielectric ceramic composition according to the present invention contains an oxide (I) of A, R, and B, the oxide (I) having a tetragonal tungsten bronze structure, the A including K and Ba, the R being at least one selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, and Sc, the B being at least one selected from the group consisting of Nb and Ta, and the Ta being at least one selected from the group consisting of Nb and Ta. The amount of substance of the B is 4.75-5.25 moles (inclusive) with respect to 2 moles of the A, and the total molar fraction of the A, the R, and the B among all the metal elements included in the dielectric ceramic composition is 0.975 or more.
本发明的目的在于，提供具有高的相对介电常数、介电损耗小、在直流电压下相对介电常数增加、并且其最大增加率大的新型的电介质瓷器组成物。本发明的电介质瓷器组成物包含A、R以及B的氧化物(I)，所述氧化物(I)具有正方晶钨青铜型构造，所述A包含K以及Ba，所述R是从包含La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu、Y以及Sc的组中选择的至少1个，所述B是从包含Nb以及Ta的组中选择的至少1个，所述B的物质的量相对于2摩尔的所述A是4.75摩尔以上且5.25摩尔以下，所述电介质瓷器组成物中包含的全部的金属元素中的所述A、所述R以及所述B的合计的摩尔分数是0.975以上。
Dielectric porcelain composition and ceramic capacitor
电介质瓷器组成物以及陶瓷电容器
MURATA TOMOKI (Autor:in)
14.06.2024
Patent
Elektronische Ressource
Chinesisch
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