A kind of x8r type ceramic capacitor porcelain and preparation method thereof

A technology for ceramic capacitors and ceramic materials, which is applied in the field of X8R type ceramic capacitor ceramic materials and their preparation, can solve the problems of complex preparation process, incompatibility with green electronic materials, and many components used, and achieves simple preparation process and temperature stability range. Wide, high dielectric constant effect
CN102260076AInactive Publication Date: 2011-11-30GUILIN UNIV OF ELECTRONIC TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUILIN UNIV OF ELECTRONIC TECH
Publication Date
2011-11-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an X8R ceramic capacitor ceramic material and a preparation method thereof. The ceramic material comprises BaTiO3 used as a main component and Bi4Ti3O12 and low-temperature CBS glass powder used as auxiliary components. The preparation method comprises the following steps: adding the Bi4Ti3O12 and CBS glass powder in a powder form into the BaTiO3 powder, then uniformly mixing in a ball mill, drying, granulating, and sintering, wherein the molar ratio is based on BaTiO3 + xBi4Ti3O12 + CBS glass powder, x = 0.01-0.05, and the amount of the CBS glass powder accounts for 0-10wt% the total mass of the ceramic material. The ceramic material can be co-sintered with base metals at medium temperature, has X8R temperature characteristics, and has the advantages of simple preparation process, low price and environment friendliness.
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Description

technical field

[0001] The invention belongs to a ceramic capacitor porcelain material, in particular to an environment-friendly, temperature-stable X8R type ceramic capacitor porcelain material and a preparation method thereof. Background technique

[0002] With the rapid development of information technology and electronic technology, higher requirements are put forward for electronic equipment, such as miniaturization, chip type and light weight. Multilayer ceramic capacitors (MLCCs) were born out of these needs. At present, the commonly used dielectric material for preparing MLCC is BaTiO 3 base ceramics. After proper doping modification, BaTiO 3 Base ceramics are characterized by high dielectric constant, low loss, and small coefficient of thermal expansion. However, the capacitance-temperature (capacity temperature ΔC) characteristics of this type of material have certain limitations. When the temperature exceeds 125°C, the capacity temperature change rate (ΔC / C 2...

Claims

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