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A kind of wide stability narrow band potassium sodium niobate based ferroelectric ceramic material and preparation method thereof

A potassium sodium niobate-based, ferroelectric ceramic technology is applied in the field of high temperature stability multi-functional dielectric ceramic materials and narrow band gap, which can solve the problems of deterioration of temperature stability, and achieve narrow optical band gap, low preparation cost, high temperature good stability

Active Publication Date: 2022-02-15
XIAN TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrical performance of KNN-based piezoelectric ceramics is greatly improved in the two-phase coexistence region near room temperature, but it is also accompanied by the deterioration of temperature stability.

Method used

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  • A kind of wide stability narrow band potassium sodium niobate based ferroelectric ceramic material and preparation method thereof
  • A kind of wide stability narrow band potassium sodium niobate based ferroelectric ceramic material and preparation method thereof
  • A kind of wide stability narrow band potassium sodium niobate based ferroelectric ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation of this example is:

[0032] (1-x-y) K 0.5 NA 0.5 NBO 3 -y (BANB 0.5 Ni 0.5 O 3 ) -Xlinbo 3 Where x = 0.08, y = 0.02 of potassium niobate sodium ceramic material, the preparation method includes the following steps:

[0033] S1, will analyze pure anhydrous sodium carbonate, water absorbed potassium carbonate, lithium carbonate, barium carbonate, nickel oxide, and niobium oxide after 8 hours at 180-300 ° C for 8 hours, according to chemical formula 0.92K 0.5 NA 0.5 NBO 3 -0.02 (BANB 0.5 Ni 0.5 O 3 ) -0.08linbo 3 The mixture is obtained after mixing;

[0034] S2, the mixture obtained by step S1 is used in ethanol to stabilize zirconia balls for the medium planet mill, and the powder, yttrium is stabilized to zircillium oxide, and ethanol mass ratio 1: 1: 2, then remove the mixed abrasive, 80 ° C Insulation 24 hours drying;

[0035] S3, the mixed powder obtained by step S2 is prepared for 3 hours in 800 ° C air, grinding, secondary ball milling, mixed powder, y...

Embodiment 2

[0042] The preparation of this example is:

[0043] (1-x-y) K 0.5 NA 0.5 NBO 3 -y (BANB 0.5 Ni 0.5 O 3 ) -Xlinbo 3 Where x = 0.04, y = 0.01 of the potassium tachel ceramic material, the preparation method includes the following steps:

[0044] S1, will analyze pure anhydrous sodium carbonate, potassium anhydrous carbonate, lithium carbonate, barium carbonate, nickel oxide, and niobium oxide in 180-300 ° C for 8 hours, according to chemical formula 0.95K 0.5 NA 0.5 NBO 3 -0.04 (BANB 0.5 Ni 0.5 O 3 ) -0.01linbo 3 The mixture is obtained after mixing;

[0045] S2, the mixture obtained by step S1 is used in ethanol to stabilize zirconia balls for the medium planet mill, and the powder, yttrium is stabilized to zircillium oxide, and ethanol mass ratio 1: 1: 2, then remove the mixed abrasive, 80 ° C Insulation 24 hours drying;

[0046] S3, the mixed powder obtained by step S2 is prepared for 3 hours in 850 ° C air, and the secondary ball milling, mixed powder, yttrium stabilizes zirconi...

Embodiment 3

[0053] The preparation of this example is:

[0054] (1-x-y) K 0.5 NA 0.5 NBO 3 -y (BANB 0.5 Ni 0.5 O 3 ) -Xlinbo 3 Where x = 0.02, y = 0.05 of the potassium potassium titratic ceramic material, the preparation method includes the following steps:

[0055] S1, will analyze pure anhydrous sodium carbonate, potassium anhydrous carbonate, lithium carbonate, barium carbonate, nickel oxide, and niobium oxide after 8 hours in 180-300 ° C for 8 hours, according to chemical formula 0.93k 0.5 NA 0.5 NBO 3 -0.02 (BANB 0.5 Ni 0.5 O 3 ) -0.05linbo 3 The mixture is obtained after mixing;

[0056] S2, the mixture obtained by step S1 is used in ethanol to stabilize zirconia balls for the medium planet mill, and the powder, yttrium is stabilized to zircillium oxide, and ethanol mass ratio 1: 1: 2, then remove the mixed abrasive, 80 ° C Insulation 24 hours drying;

[0057] S3, the mixed powder obtained by step S2 is prepared for 3 hours in air at 750 ° C for 3 hours, and the secondary ball milling,...

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PUM

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Abstract

The invention discloses a wide-stability narrow-band potassium sodium niobate-based ferroelectric ceramic material and a preparation method thereof. The chemical formula of the material is (1‑x‑y)K 0.5 Na 0.5 NbO 3 -y(BaNb 0.5 Ni 0.5 o 3 )‑xLiNbO 3 ,Through the traditional solid-phase reaction method of ceramic preparation, the ceramic material is obtained through baking, batching, ball milling, drying, pre-sintering, secondary ball milling, drying, granulation, molding, sintering, polishing and silver electrodes, The preparation process is simple, the cost is low, and there is no pollution. The ceramic material has the advantages of high dielectric constant and stability in a wide temperature range, small dielectric loss, narrow spectral band gap, simple preparation process, and low preparation cost. Has a strong application.

Description

Technical field [0001] The present invention belongs to a narrow band gap, high temperature stability multifunctional dielectric ceramic material technology, and more particularly to a wide-stability narrowband niodealate sodium-based ferroelectric ceramic material and a preparation method thereof. Background technique [0002] Information, energy and materials are known as the three pillars of the 21st century, with multi-functional applications are the goals of people's constant pursuit. The ferroelectric material is a class of typical multifunctional materials, which is applied to a memory, filter, driver, detector, optical waveguide, optical multiplier, and the like. These components have significant application prospects in military, automotive electronics, communication equipment, home appliances, new generations, etc. For this reason, the research of ferroelectric has become one of the focus of recent high-tech directions in recent years. [0003] The ferroelectric oxide i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/495C04B35/622C04B35/63C04B41/88
CPCC04B35/495C04B35/622C04B35/6303C04B41/009C04B41/5116C04B41/88C04B2235/3201C04B2235/3203C04B2235/3215C04B2235/3279C04B2235/602C04B2235/656C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/77C04B41/0072
Inventor 纪红芬蒋超刘超卢荣华柯番
Owner XIAN TECH UNIV
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