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Low-temperature sintered strontium titanate energy-storing medium ceramic material and preparation method thereof

A technology of energy storage media and ceramic materials, which is applied in the field of ceramic compositions, can solve problems such as strontium titanate-based ceramics that have not yet been seen, and achieve the effect of low sintering temperature and high compressive strength

Inactive Publication Date: 2013-11-20
TIANJIN UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

At present, no BaCu (B 2 o 5 ) to improve the properties of strontium titanate-based ceramic materials

Method used

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  • Low-temperature sintered strontium titanate energy-storing medium ceramic material and preparation method thereof

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Embodiment Construction

[0022] The raw materials used in the present invention are all commercially available analytical reagents, and the specific embodiments are as follows.

[0023] (1) According to the stoichiometric formula (Sr 0.9 Mg 0.1 )(Ti 0.96 Zr 0.04 )O 3 , the raw material SrCO 3 , MgO, TiO 2 and ZrO 2 Weigh the ingredients. Put the mixed powder into a polyester tank, add deionized water and zirconia balls, the mass ratio of material, water, and balls is 1:1:1, and mill on a planetary ball mill for 6-12 hours at a speed of 1000 rpm / Minute. Then the ball-milled raw materials are dried in a 1500W infrared drying oven, and the raw materials are passed through a 40-mesh sieve after drying. The sieved powder is pre-fired at 1125°C and kept at this temperature for 4 hours to synthesize the main crystal phase.

[0024] (2) According to the stoichiometric formula, it is BaCuB 2 o 5 , the raw material BaCO 3 , CuO and B 2 o 3 Weigh the ingredients. Put the mixed powder into a poly...

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Abstract

The invention discloses a low-temperature sintered strontium titanate energy-storing medium ceramic material with a chemical formula of (Sr[0.9]Mg[0.1])(Ti[0.96]Zr[0.04])O[3] + x mol% BaCuB[2]O[5] (0<x<=5). By employing a conventional solid phase method and sintering at 1000 DEG C-1175 DEG C, the strontium titanate energy-storing medium ceramic material with a higher dielectric constant, higher compressive strength and a lower sintering temperature is prepared and has a wide application prospect.

Description

technical field [0001] The invention belongs to a kind of ceramic composition characterized by composition, in particular to a kind of BaCu(B 2 o 5 ) doped modified strontium titanate-based energy storage medium ceramic material and a preparation method thereof. Background technique [0002] At present, in order to obtain practical energy storage medium ceramic materials, ceramic materials need to meet three requirements: (1) Higher dielectric constant ε r , to facilitate the miniaturization of the device; (2) high compressive strength E b , with a higher dielectric constant to obtain greater energy storage density; (3) lower sintering temperature, easy to co-fire with Pd-Ag electrodes with low Pd content. [0003] The compressive strength of ceramic materials is mainly affected by grain size, pore size and porosity. The addition of low-melting sintering aids can improve the microstructure of the ceramic structure, increase the sintering compactness of the ceramic struct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/47C04B35/63C04B35/622
Inventor 李玲霞于晓旭蔡昊成高正东张宁
Owner TIANJIN UNIV
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