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Multilayered ceramic capacitor medium ceramic material with reducing resistance

A technology of multilayer ceramic capacitors and dielectric ceramics, applied in fixed capacitor dielectrics, multilayer capacitors, components of fixed capacitors, etc., can solve the problems of low dielectric constant, difficulty in miniaturization, and large capacity, and achieve accelerated life. The effect of high, good temperature characteristics and high insulation resistivity

Inactive Publication Date: 2011-04-20
仙桃市中星电子材料有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the dielectric ceramic composition described in this document, since the dielectric constant is too low, it is difficult to reduce the size and increase the capacity.

Method used

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  • Multilayered ceramic capacitor medium ceramic material with reducing resistance
  • Multilayered ceramic capacitor medium ceramic material with reducing resistance
  • Multilayered ceramic capacitor medium ceramic material with reducing resistance

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Embodiment Construction

[0021] In the basic formula of dielectric ceramic materials, barium titanate Ba m TiO 3 Main component, MnO 2 , Mg0, CaO, R1 2 o 3 , R2 2 o 3 and Re etc. as auxiliary components, where Ba m TiO 3 Ba produced by oxalic acid method m TiO 3 Powder supplied, the Ba m TiO 3 The average particle size of the powder is 0.40-0.60um. The dielectric ceramic material composition satisfies the following relationship:

[0022] 100Ba m TiO 3 +aMnO2+bMg0+cR1 2 o 3 +dR2 2 o 3 +eRe;

[0023] Wherein R1 is selected from at least one of Gd, Tb, Dy; R2 is selected from at least one of Y, Sm, Ho, Er, Yb; Re sintering aid is selected from B 2 o 3 , ZnO, SiO 2 、Al 2 o 3 、K 2 O. Li 2 One or more combinations of O. And the amount of each component is (by mole): 0.99≤m≤1.01, 0.02≤a≤1.5, 0.2≤b≤2.5, 0.05≤c≤1.5, 0.05≤d≤1.5, 0.2≤e≤3.5.

[0024] Based on the above-mentioned basic formula, the present invention is further described in detail below through the examples, but the pre...

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Abstract

A multilayered ceramic capacitor medium ceramic material with reducing resistance comprises BamTiO3 which is a primary constituent, MnO2, MgO, CaO, R12O3, R22O3 and Re agglutinant which are auxiliary constituents, wherein R1 is elected from at least one of Gd, Tb and Dy; R2 is selected from at least one of Y, Sm, Ho, Er and Yb; the Re agglutinant is selected from at least one of B2O3, ZnO, SiO2, Al2O3, K2O and Li2O; the ceramic material is suitable for producing a middle and high voltage multilayered ceramic capacitor with a rated voltage greater than 100V; the room-temperature dielectric constant thereof can be controlled between 2500 and 3500; the temperature characteristic of electrostatic capacity and the material uniformity are good; the cost of products is low; the insulation resistivity, the acceleration life of insulation resistor and voltage resistance are high; and the reliability performance is good. The performance requirement of EIA standard X7R is satisfied completely.

Description

technical field [0001] The invention relates to an anti-reduction dielectric ceramic composition, especially a reduction-resistant dielectric ceramic material that can match Ni internal electric slurry as an electrode layer, and is suitable for medium and high voltage multilayers with high rated voltage (rated voltage is higher than 100V) Ceramic material for ceramic capacitors. Background technique [0002] MLCC (Multi-layer Ceramic Capacitor) has the characteristics of high specific capacity, high reliability, high withstand voltage, and good frequency characteristics. It is an electronic device that is widely used in the fields of electronic information, computers, automatic control, and communications. . With the development of electronic equipment and components in the direction of miniature, thin layer, hybrid integration and the rapid development of integrated circuit surface mount technology, the demand for high-performance MLCC is increasing day by day. High perfo...

Claims

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Application Information

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IPC IPC(8): C04B35/468H01G4/12H01G4/30
Inventor 赵中友蓝建明资美勇陈运姣黄敏杨锋
Owner 仙桃市中星电子材料有限公司
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