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NaNbO3 phase containing Na2O-K2O-Nb2O5-SiO2 low dielectric loss energy storage glass ceramic

A technology of na2o-k2o-nb2o5-sio2 and glass ceramics, which is applied in glass furnace equipment, glass manufacturing equipment, manufacturing tools, etc., can solve the problems of little research on potassium sodium niobate glass ceramic materials, complex raw materials, and low utilization of raw materials. problems, to achieve the effect of simplifying glass formula, simple experimental operation, and multiple molding methods

Active Publication Date: 2018-11-20
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, niobate glass ceramics is a hot research topic of energy storage glass ceramics, but most of them are researched on strontium barium niobate glass powder or ceramics. However, the raw materials used in the preparation process of strontium barium niobate glass ceramics are relatively complicated, and there Utilization of low defects; and little research on potassium sodium niobate glass-ceramic materials

Method used

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  • NaNbO3 phase containing Na2O-K2O-Nb2O5-SiO2 low dielectric loss energy storage glass ceramic
  • NaNbO3 phase containing Na2O-K2O-Nb2O5-SiO2 low dielectric loss energy storage glass ceramic
  • NaNbO3 phase containing Na2O-K2O-Nb2O5-SiO2 low dielectric loss energy storage glass ceramic

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Embodiment 1

[0028] The crystallization treatment of the glass sample in this embodiment: heat preservation at 950° C. for 4 hours.

[0029] The preparation method of the glass-ceramic material of the present embodiment comprises the following steps:

[0030] 1) The potassium sodium niobate glass-ceramic material in this embodiment is made of a molar mass ratio of 40 x : 40 (1- x ) : 40: 20 ( x =1), take Na 2 CO 3 , K 2 CO 3 , Nb 2 o 5 and SiO 2 mix.

[0031] 2) When heating the quartz crucible with the furnace from room temperature to 1100°C, start adding the mixture, then continue heating to 1500°C, and keep the temperature at 1500°C for 60 minutes to melt the mixture evenly to obtain a mixed molten material; put the mixed molten material on the copper plate Forming, then quickly put into the furnace and anneal at 500°C for 11 hours to obtain the annealed glass matrix;

[0032] 3) After holding at 708°C for 1h, continue to hold at 905°C for 4h and then cool to room temperature...

Embodiment 2

[0035] The formula of glass sample in the present embodiment is 40 x : 40 (1- x ) : 40: 20 ( x =0.9), and at 1500°C, the feed was melted and kept warm for 60min, and the other conditions were the same as in Example 1.

Embodiment 3

[0037] The formula of glass sample in the present embodiment is 40 x : 40 (1- x ) : 40: 20 ( x =0.8), other conditions are the same as in Example 2.

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Abstract

The invention relates to a NaNbO3 phase containing Na2O-K2O-Nb2O5-SiO2 low dielectric loss energy storage glass ceramic material, the microcrystal glass material is prepared by mixing a glass phase and a crystal phase, fusing, cooling and molding, annealing, and conducting crystallization heat treatment; wherein the glass phase accounts for 20% according to mole percent, and the balance is the crystal phase; the crystal phase is prepared by heating and fusing Na2CO3, K2CO3 and Nb2O5 at the molar ratio of x:(1-x):1, wherein x is more than or equal to 0.7 and less than or equal to 1. The dielectric loss of the prepared potassium-sodium niobate based energy storage microcrystal glass material is low; the added Na2CO3 not only has an effect on regulating the composition of the crystal phase ofa potassium-sodium niobate system, but also has a certain effect on promoting the crystallization process, the NaNbO3 phase favorable for the high energy storage density is formed, and the high energy storage density glass ceramic material is finally obtained.

Description

technical field [0001] The invention relates to the field of glass ceramic materials, in particular to a NaNbO-containing 3 Phase Na 2 O-K 2 O-Nb 2 o 5 -SiO 2 Low dielectric loss energy storage glass-ceramic material and preparation method thereof. Background technique [0002] In recent years, the development of pulse technology and higher application requirements have put forward more stringent requirements on the electrical breakdown resistance and energy storage performance of materials. Therefore, as a branch of energy storage dielectric materials, ferroelectric glass ceramic materials are becoming more and more popular. more favored by researchers. Ferroelectric glass ceramics mainly rely on the coordination and matching of the high breakdown field strength of the internal glass phase and the good dielectric properties of the ferroelectric crystal phase, which ultimately makes the material have a large energy storage density. [0003] According to the calculatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/02C03C6/04C03C4/16C03B5/16C03B25/00C03B32/02
CPCC03B5/16C03B25/00C03B32/02C03C1/00C03C4/16C03C10/0072
Inventor 蒲永平彭鑫杜欣怡师裕张磊
Owner SHAANXI UNIV OF SCI & TECH
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