A strontium-bismuth-titanium-based energy storage medium material for medium-temperature sintering and its preparation method

A strontium-bismuth-titanium-based storage and dielectric material technology is applied in the direction of fixed capacitor dielectric, fixed capacitor parts, fixed capacitors, etc., which can solve the difficult problems of improving the structure of multilayer ceramic capacitors, and achieve good practical value and high Effect of insulation resistivity and low loss

Active Publication Date: 2021-12-24
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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  • A strontium-bismuth-titanium-based energy storage medium material for medium-temperature sintering and its preparation method
  • A strontium-bismuth-titanium-based energy storage medium material for medium-temperature sintering and its preparation method
  • A strontium-bismuth-titanium-based energy storage medium material for medium-temperature sintering and its 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 h...

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 ...

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 grindin...

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Abstract

The invention discloses a strontium-bismuth-titanium-based energy storage medium material for medium temperature sintering and a preparation method, comprising a base material, a modifier and a sintering aid; the base material is SrO-xBi 2 O 3 ‑(1+3x)TiO 2 , 0.04≤x≤0.11; the modifier includes MnCO 3 , Mg(OH) 2 , Co 2 O 3 , and SrZrO 3 , CeO 2 and Y 2 O 3 One or more of them; sintering aids include H 3 BO 3 , ZnO, CaCO 3 and SiO 2 two or more of them. The invention adopts the solid phase method to prepare SrO-xBi 2 O 3 ‑(1+3x)TiO 2 Base material, by adding modifiers and sintering aids, an energy storage medium with high dielectric constant, breakdown strength and insulation resistivity, low loss and sintering temperature, and a stable and adjustable temperature coefficient can be obtained Material.

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 Patents(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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