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Strontium, bismuth and titanium base energy storage medium material for medium temperature sintering and preparation method

A strontium-bismuth-titanium-based storage and dielectric material technology is applied in the direction of fixed capacitor dielectrics, fixed capacitor parts, electrical components, etc. Loss, effect of high breakdown voltage

Active Publication Date: 2019-07-05
BEIJING YUANLIU HONGYUAN ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, due to the limitation of equipment and technology level, it is difficult to further improve the structure of multilayer ceramic capacitors.

Method used

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  • Strontium, bismuth and titanium base energy storage medium material for medium temperature sintering and preparation method
  • Strontium, bismuth and titanium base energy storage medium material for medium temperature sintering and preparation method
  • Strontium, bismuth and titanium base energy storage medium material for medium temperature sintering and preparation method

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preparation example Construction

[0047] A method for preparing a strontium-bismuth-titanium-based energy storage medium material for medium-temperature sintering according to the invention, comprising:

[0048] Step 1, prepare base material:

[0049] Weigh analytically pure SrCO at a molar ratio of 1:x:(1+3x) 3 、Bi 2 o 3 and TiO 2 Raw materials, wherein 0.04≤x≤0.11; put the weighed raw materials into a ball mill jar equipped with zirconia balls, and conduct mixed ball milling with deionized water as the medium, which lasts 7 to 9 hours; dry in an oven, dry The temperature is 110°C-120°C, and the drying time is 6-8 hours; calcined in a muffle furnace at 1100°C-1200°C for 2-3 hours to obtain SrO-xBi 2 o 3 -(1+3x)TiO 2 Powder.

[0050] Step 2. According to the ratio of the above-mentioned base material, modifier and sintering aid, weigh the base material, modifier and sintering aid, put them into a ball mill tank equipped with zirconia balls, add deionized water ball mill 5 hours, dried at 120°C for 6 ho...

Embodiment 1

[0054] The invention provides a strontium-bismuth-titanium-based energy storage medium material for medium-temperature sintering, including a base material, a modifier and a sintering aid; wherein:

[0055] SrO-xBi 2 o 3 -(1+3x)TiO 2 To analyze pure SrCO 3 、Bi 2 o 3 and TiO 2 As a raw material, weigh SrCO with a molar ratio of 1:0.04:1.12 3 、Bi 2 o 3 and TiO 2 Raw materials, put the weighed raw materials into a ball mill tank equipped with zirconia balls, and carry out mixed ball milling with deionized water as a medium for 9 hours; then dry them in an oven at a drying temperature of 110°C for 8 hours ; Calcined at 1200°C for 2 hours in a muffle furnace to obtain SrO-0.04Bi 2 o 3 -1.12TiO 2 Powder.

[0056] Weigh the base material, modifier and sintering aid according to the weight ratio in Table 1 (unit: gram), use deionized water as the medium, ball mill and mix for 5 hours, dry at 120°C for 6 hours, and take out the ceramic powder After grinding and passing th...

Embodiment 2

[0064] The invention provides a strontium-bismuth-titanium-based energy storage medium material for medium-temperature sintering, including a base material, a modifier and a sintering aid; wherein:

[0065] SrO-xBi 2 o 3 -(1+3x)TiO 2 To analyze pure SrCO 3 、Bi 2 o 3 and TiO 2 As a raw material, weigh SrCO with a molar ratio of 1:0.11:1.33 3 、Bi 2 o 3 and TiO 2 Raw materials, put the weighed raw materials into a ball mill tank equipped with zirconia balls, and carry out mixed ball milling with deionized water as a medium for 7 hours; then dry them in an oven at a temperature of 120°C, and dry The time is 6 hours; then calcined in a muffle furnace at 1100°C for 3 hours to obtain SrO-0.11Bi 2 o 3 -1.33TiO 2 Powder.

[0066] Weigh the base material, modifier and sintering aid according to the weight ratio in Table 3 (unit: gram), use deionized water as the medium, ball mill and mix for 5 hours, dry at 120°C for 6 hours, and take out the ceramic powder After grinding ...

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Abstract

The invention discloses a strontium bismuth and titanium base energy storage medium material for medium temperature sintering and a preparation method. The medium material is prepared from a base material, a modifying agent and sintering auxiliaries; the base material is SrO-xBi2O3-(1+3x)TiO2, wherein 0.04<=x<=0.11; the modifying agent includes one or more of MnCO3, Mg(OH)2, Co2O3, SiZrO3, CeO2 and Y2O3; the sintering auxiliaries include two or more of H3BO3, ZnO, CaCO3 and SiO2. The SrO-xBi2O3-(1+3x)TiO2 base material is prepared by adopting a solid phase method, and the adjustable energy storage dielectric material with the high dielectric constant, disruptive strength and insulation resistivity, low consumption and sintering temperature and stable temperature coefficient is obtained byadding the modifying agent and the sintering auxiliaries.

Description

technical field [0001] The invention relates to the technical field of electronic information materials and components, in particular to a strontium-bismuth-titanium-based energy storage medium material for medium-temperature sintering and a preparation method thereof. Background technique [0002] Energy storage capacitors have broad applications in fields such as hybrid electric vehicles, pulse power supplies, radar, and aerospace. With the development of technology, energy storage capacitors are mainly developed in the direction of miniaturization, light weight, high withstand voltage, high reliability and high energy storage. In order to meet the development trend of energy storage capacitors, the main measures are: (1) optimize the capacitor structure and adopt multilayer ceramic capacitor structure; (2) improve the performance of dielectric materials, such as increasing the dielectric constant, increasing the breakdown strength and reducing loss . At present, due to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/47C04B35/622C04B35/63H01G4/12
CPCC04B35/47C04B35/622C04B35/6303H01G4/1218H01G4/1209C04B2235/3298C04B2235/3206C04B2235/3267C04B2235/3275C04B2235/3225C04B2235/3229C04B2235/3248C04B2235/3208C04B2235/3284C04B2235/3418C04B2235/3409
Inventor 杨魁勇程华容齐世顺宋蓓蓓
Owner BEIJING YUANLIU HONGYUAN ELECTRONICS TECH
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