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Borate glass ceramic with low dielectric loss, high energy storage density and compact structure, and preparation method and application thereof

A technology of borate glass and glass ceramics, applied in glass manufacturing equipment, glass furnace equipment, glass molding, etc., can solve the problems of complex raw materials, low raw material utilization, and little research on potassium sodium niobate glass ceramic materials, etc. , to achieve the effect of uniform grain size, simplified glass formula and good compactness

Active Publication Date: 2021-10-01
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, most of which focus on strontium barium niobate glass powder or ceramics. Not high defects; and little research on potassium sodium niobate glass-ceramic materials

Method used

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  • Borate glass ceramic with low dielectric loss, high energy storage density and compact structure, and preparation method and application thereof
  • Borate glass ceramic with low dielectric loss, high energy storage density and compact structure, and preparation method and application thereof
  • Borate glass ceramic with low dielectric loss, high energy storage density and compact structure, and preparation method and application thereof

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Embodiment 1

[0032] The crystallization treatment of the glass sample in this embodiment: heat insulation at 800 ° C for 2 h.

[0033] The preparation method of the glass ceramic material of the present embodiment includes the steps of:

[0034] 1) The glass ceramic material is (1-x): X (x = 0.10), take K by mole percentage (1-x): X (x = 0.10) 2 CO 3 NA 2 CO 3 , NB 2 O 5 , And h 3 BO 3 The mixture is obtained by mixing the ball milling, then drying, and sieved.

[0035] 2) When the quartz crucible is heated from room temperature to 1100 ° C, the mixture is added, then the mixture is added to 1400 ° C, and 50 min is held at 1400 ° C for 50 min to mix uniform mixture, resulting in mixed melt; mixed melt at 500 ° C The preheated copper plate is formed, and the furnace is rapidly placed in a furnace at 500 ° C for 2 h, and the glass substrate after annealing is obtained;

[0036] 3) Insulation at 800 ° C for 2 h and then cool to room temperature with the furnace (K 2 O-NA 2 O-2NB 2 O 5 ) -0.1b 2 O...

Embodiment 2

[0039] In this embodiment, the formulation of the glass sample is (1-x): X (x = 0.15), and the melting is melted and holding 50 min at 1400 ° C, and other conditions are as in Example 1.

Embodiment 3

[0041] The formulation of the glass sample in this embodiment is (1-x): X (x = 0.20), and other conditions are as in Example 2.

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Abstract

A preparation method of a borate glass ceramic material with low dielectric loss, high energy storage density and compact structure comprises the following steps: firstly, taking K2CO3, Na2CO3, Nb2O5 and H3BO3 as raw materials according to the ratio of the chemical formula 1-x(K2O-Na2O-2Nb2O5)-xB2O3 (x is greater than or equal to 0.10 and less than or equal to 0.30), uniformly mixing the powder through mechanical ball milling, and annealing; and carrying out melting, cooling molding and annealing to obtain a glass block, and carrying out crystallization treatment by keeping the temperature at 800 DEG C for 2 hours to obtain the glass ceramic material. The preparation process is simple, the raw materials are low in price, the manufacturing cost is low, a linear ferroelectric hysteresis loop can be obtained at the room temperature, the energy storage density reaches 2.65 J / cm<3> to the maximum, the dielectric loss is lower than 0.04, and the energy storage efficiency is guaranteed to be 96% or above at the high temperature of 200 DEG C.

Description

Technical field [0001] The present invention relates to the field of glass ceramic materials and a preparation method thereof, and more particularly to the structurally tight borophonicate glass ceramic material and preparation method thereof of low dielectric loss high energy storage density. Background technique [0002] In recent years, pulse technology has developed "high temperature reduction, high energy density and high reliability" in the rapid development of hybrid vehicles, aerospace and petroleum drilling, and storage medium capacitors. Glass ceramics composed of crystal phase and dense glass depends on the high-stricken and iron-resistant dielectric properties of the internal dense glass phase and the iron-based medium in the field of energy storage dielectric materials are favored by researchers. [0003] Calculating formula according to the storage density of the linear dielectric The energy storage density of the energy storage element is related to its own relati...

Claims

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Application Information

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IPC IPC(8): C03C10/00C03B32/02C03B25/00C03B19/02C03B5/16C03B1/00
CPCC03C10/00C03B1/00C03B5/16C03B19/02C03B25/00C03B32/02
Inventor 蒲永平杜欣怡彭鑫李润张倩雯陈敏张金波
Owner SHAANXI UNIV OF SCI & TECH
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