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Strontium barium niobate glass ceramic material with high dielectric constant and high breakdown field strength and preparation method thereof

A high dielectric constant, barium strontium niobate technology, applied in the field of glass ceramic materials and its preparation, can solve the problems of reducing crystallization tendency, limiting the application of energy storage materials, increasing the breakdown field strength of materials, etc., and achieving high breakdown Field strength, multiple molding methods, and high breakdown field strength

Active Publication Date: 2014-06-25
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of glass reduces the porosity of the material, increases the breakdown field strength of the material, but also reduces the crystallization tendency, and the relatively low crystallization tendency will limit the application as an energy storage material

Method used

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  • Strontium barium niobate glass ceramic material with high dielectric constant and high breakdown field strength and preparation method thereof
  • Strontium barium niobate glass ceramic material with high dielectric constant and high breakdown field strength and preparation method thereof
  • Strontium barium niobate glass ceramic material with high dielectric constant and high breakdown field strength and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] In this embodiment, the barium strontium niobate glass-ceramic material comprises SrO, BaO, Nb with a molar ratio of 12:12:24:10:10:15:3 2 o 5 , CaO, SiO 2 , B 2 o 3 and BaF 2 .

[0025] The barium strontium niobate glass-ceramic material in this embodiment is made of SrCO with a molar ratio of 12:12:24:10:10:30:3 3 , BaCO 3 , Nb 2 o 5 , CaCO 3 , SiO 2 , H 3 BO 3 and BaF 2 It is prepared by melting, molding, annealing and crystallization.

[0026] The preparation method of barium strontium niobate glass-ceramic material of the present embodiment comprises the following steps:

[0027] 1) SrCO 3 、BaCO 3 , Nb 2 o 5 , CaCO 3 , SiO 2 、H 3 BO 3 and BaF 2 Mix evenly according to 12:12:24:10:10:30:3 to obtain a mixture;

[0028] 2) When the quartz crucible is heated with the furnace from room temperature to 1100°C, start to add the mixture, then continue to heat to 1350°C, and keep it at 1350°C for 30 minutes to melt the mixture evenly to obtain a mixed...

Embodiment 2

[0032] The barium strontium niobate glass-ceramic material of this embodiment comprises SrO, BaO, Nb with a molar ratio of 12:12:24:12:12:18:3 2 o 5 , CaO, SiO 2 , B 2 o 3 and BaF 2 .

[0033]The barium strontium niobate glass-ceramic material in this embodiment is made of SrCO with a molar ratio of 12:12:24:12:12:36:3 3 , BaCO 3 , Nb 2 o 5 , CaCO 3 , SiO 2 , H 3 BO 3 and BaF 2 It is prepared by melting, molding, annealing and crystallization.

[0034] The preparation method of barium strontium niobate glass-ceramic material of the present embodiment comprises the following steps:

[0035] 1) SrCO 3 , BaCO 3 , Nb 2 o 5 , CaCO 3 , SiO 2 , H 3 BO 3 and BaF 2 Mix evenly according to 12:12:24:12:12:36:3 to obtain a mixture;

[0036] 2) When the quartz crucible is heated from room temperature to 1100°C with the furnace, start to add the mixture, then continue to heat to 1350°C, and keep it at 1350°C for 30 minutes to melt the mixture evenly to obtain a mixed...

Embodiment 3

[0040] The barium strontium niobate glass-ceramic material of this embodiment comprises SrO, BaO, Nb with a molar ratio of 12:12:24:14:14:21:3 2 o 5 , CaO, SiO 2 , B 2 o 3 and BaF 2 .

[0041] The strontium barium niobate glass-ceramic material in this embodiment is made of SrCO with a molar ratio of 12:12:24:14:14:42:3 3 , BaCO 3 , Nb 2 o 5 , CaCO 3 , SiO 2 , H 3 BO 3 and BaF 2 It is prepared by melting, molding, annealing and crystallization.

[0042] The preparation method of barium strontium niobate glass-ceramic material of the present embodiment comprises the following steps:

[0043] 1) SrCO 3 , BaCO 3 , Nb 2 o 5 , CaCO 3 , SiO 2 , H 3 BO 3 and BaF 2 Mix evenly according to the molar ratio of 12:12:24:14:14:42:3 to obtain the mixture;

[0044] 2) When the quartz crucible is heated from room temperature to 1100°C with the furnace, start to add the mixture, then continue to heat to 1350°C, and keep it at 1350°C for 30 minutes to melt the mixture ev...

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Abstract

The invention discloses a strontium barium niobate glass ceramic material with high dielectric constant and high breakdown field strength and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing SrCO3, BaCO3, Nb2O5, CaCO3, SiO2, H3BO3 and BaF2, uniformly melting at 1300-1400 DEG C, molding and rapidly annealing to obtain annealed glass; crystalizing the annealed glass at the crystallization temperature and then cooling in a furnace to obtain the strontium barium niobate glass ceramic material. By adopting a melting method to prepare the strontium barium niobate glass ceramic material, the method is simple and convenient, and various molding methods are available. The strontium barium niobate glass ceramic material is treated at first and then is subjected to XRD (X-Ray Diffraction), SEM and EDS tests, and the test results prove that the strontium barium niobate glass ceramic material prepared by the method disclosed by the invention is ferroelectric glass ceramic with high dielectric constant, high breakdown field strength and low dielectric loss.

Description

technical field [0001] The invention relates to a glass ceramic material and a preparation method thereof, in particular to a strontium barium niobate glass ceramic material with high dielectric constant and high breakdown field strength and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of information technology and electronic science and technology, people have an urgent demand for dielectric materials with high energy storage density that can effectively reduce the volume of high-voltage capacitors, and put forward higher requirements for the use of electronic equipment, such as light Miniaturization and miniaturization, high energy storage materials will emerge as the times require. Ferroelectric glass ceramics are functional materials with ferroelectric properties composed of high dielectric constant ferroelectric phase and glass phase. It combines the advantages of glass and ceramics. The internal crystal structu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/02
Inventor 蒲永平柳晓燕
Owner SHAANXI UNIV OF SCI & TECH
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