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a srnb-containing 6 o 16 Phase titanate and niobate composite low dielectric loss glass ceramics and preparation method

A technology of glass ceramics and phase titanate, which is applied in the field of glass ceramic materials, can solve problems such as low breakdown strength, and achieve the effects of smaller internal grains, increased energy storage density, and fine internal grains

Active Publication Date: 2021-10-15
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Titanate-based glass-ceramics have a high dielectric constant, but low breakdown strength due to the easy formation of defects by titanium ions in titanate

Method used

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  • a srnb-containing <sub>6</sub> o <sub>16</sub> Phase titanate and niobate composite low dielectric loss glass ceramics and preparation method
  • a srnb-containing <sub>6</sub> o <sub>16</sub> Phase titanate and niobate composite low dielectric loss glass ceramics and preparation method
  • a srnb-containing <sub>6</sub> o <sub>16</sub> Phase titanate and niobate composite low dielectric loss glass ceramics and preparation method

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Embodiment 1

[0028] Crystallization treatment of the glass sample in this embodiment: heat preservation at 745° C. for 2 hours.

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

[0030] 1) The glass-ceramic material of this embodiment is composed of a molar mass ratio of (1- x ) (43.75:6.25:50): x (50:50) of Na 2 CO 3 、K 2 CO 3 , Nb 2 o 5 , SrCO 3 and TiO 2 ( x =0.05), SiO 2 with H3 BO 3 The molar ratio is 25:75, CeO 2 Mixed for 2mol.

[0031] 2) When the quartz crucible is heated with the furnace from room temperature to 1150°C, start to add the mixture, then continue to heat to 1450°C, and keep it at 1450°C for 50-60 minutes to melt the mixture evenly to obtain a mixed molten material; put the mixed molten material in Molded on a copper plate, then quickly placed in a furnace and annealed at 500-600°C for 4 hours to obtain an annealed glass matrix;

[0032] 3) Insulate at 745°C for 4 hours and then cool...

Embodiment 2

[0036] Glass sample in the present embodiment, crystallization temperature is 737 o C, and x =0.10 Other conditions are the same as in Example 1.

Embodiment 3

[0038] Glass sample in the present embodiment, crystallization temperature is 730 o C, and x =0.15 Other conditions are the same as in Example 1.

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Abstract

The present invention relates to providing a kind of SrNb 6 o 16 Phase Na 2 CO 3 -K 2 CO 3 -Nb 2 o 5 -SrCO 3 -TiO 2 ‑SiO2 2 -H 3 BO 3 -CeO 2 The system glass ceramic material and its preparation method, the glass-ceramic material is prepared by mixing glass phase and crystal phase, melting, cooling forming, annealing and crystallization heat treatment. Among them, Na in molar percentage (1‑x) (43.75:6.25:50):x (50:50) 2 CO 3 、K 2 CO 3 , Nb 2 o 5 , SrCO 3 and TiO 2 (x=0.05), SiO 2 with H 3 BO 3 The molar ratio is 25:75, CeO 2 It is 2mol. The dielectric loss of the glass-ceramic material prepared by the present invention is low, and the CeO added by the present invention 2 , not only promotes the crystallization process to a certain extent, but also obtains a high energy storage density glass-ceramic material with a uniform microstructure.

Description

technical field [0001] The invention relates to the field of glass ceramic materials and a preparation method thereof, in particular to a SrNb-containing 6 o 16 Phase Na 2 CO 3 -K 2 CO 3 -Nb 2 o 5 -SrCO 3 -TiO 2 -SiO 2 -H 3 BO 3 -CeO 2 A systematic low dielectric loss energy storage glass-ceramic material and a 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. ABOs 3 The perovskite crystal structure is a stable and widely used crystal type. It is a typical ferroelectric. There are not only many studies on ferroelectricity, piezoelectricity, and pyroelectricity, but also in photocatalysis and energy storage. More novel research focuses on heat. Glass ceramics mainly heat-treat the glass matrix to generate a crystal phase inside the glass ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/02C03C4/16C03C6/04C03B32/02
Inventor 蒲永平彭鑫师裕张磊
Owner SHAANXI UNIV OF SCI & TECH
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