Method for preparing low-temperature sintering ceramic dielectric material and obtained MLCC capacitor

A technology of low-temperature sintering ceramics and dielectric materials, which is applied in the field of ceramic dielectric materials

Inactive Publication Date: 2010-03-17
GUANGDONG FENGHUA ADVANCED TECH HLDG
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  • Abstract
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Problems solved by technology

At present, multilayer chip ceramic capacitors with base metal nickel as the inne...

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  • Method for preparing low-temperature sintering ceramic dielectric material and obtained MLCC capacitor

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Embodiment

[0012] A low-temperature sintered ceramic dielectric material, the purity of which is selected to be analytically pure raw material Al 2 o 3 , adding modified additives, according to the No. 1-16 formula in Table 1, after fine-tuning the components, wet ball milling, sand milling, drying and other processes, the main material with good dispersion and uniform composition can be obtained. Measure the glass flux according to No. 1-16 formula in Table 1, and after fine-tuning the components, wet mixing, drying, and calcination, a glass material with good dispersibility and uniform composition can be obtained. Mix the above-mentioned main material and glass material according to the formula No. 1-16 in Table 1 to obtain a ceramic medium porcelain material, and prepare a ceramic slurry by a conventional method, and finally pass the slurry through casting, silk screen printing, lamination, cutting, Multilayer ceramic capacitor MLCC products are made by sintering and end-capping proc...

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Abstract

The invention discloses a low-temperature sintering ceramic dielectric material comprising the following components by weight percent: 50-70wt% of main crystal phase, 0-13.4wt% of modified additive and 16.6-40.5wt% of glass fusion aid. The main crystal phase is alumina Al2O3. The modified additive is one or several of BaO, TiO2, MgO and CaO. The glass fusion aid is one or several of SiO2, ZnO, B2O3 and BiO. The method for preparing a ceramic capacitor by the ceramic dielectric material comprises the processes of pulping, flow casting, silk screen printing, laminating, cutting, sintering and end capping, and the sintering temperature is 800-1000 DEG C. The dielectric material conforms to the NPO ceramic dielectric property and has good environmental-protection property, high material dispersivity, good formation process and no cracking when being sintered.

Description

technical field [0001] The invention relates to a ceramic dielectric material, in particular to a low-temperature sintered ceramic dielectric material conforming to NPO characteristic ceramic material and a preparation method of the obtained multilayer ceramic capacitor MLCC. Background technique [0002] With the miniaturization of electronic equipment, the demand for multilayer chip ceramic capacitors is increasing. At present, the multilayer chip ceramic capacitor with the base metal nickel as the inner electrode has been widely used, but it can only be used in the low frequency field. In recent years, with the rapid development of modern communication technologies such as mobile communication, satellite communication, global satellite positioning system (GPS), Bluetooth technology and wireless local area network (WLA), microwave technology is also moving towards higher frequencies, that is, towards millimeter waves and submillimeters. direction of the wave. The relativ...

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Application Information

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IPC IPC(8): C04B35/10C04B35/622H01G4/30H01G4/12
Inventor 岑远清杜泽伟陈梓贤付振晓韩巍
Owner GUANGDONG FENGHUA ADVANCED TECH HLDG
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