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A kind of preparation method of bismuth sodium zirconate lithium cerium doped potassium sodium niobate based ceramic material

A technology based on sodium bismuth zirconate lithium cerium and potassium sodium niobate, which is applied in the field of preparation of bismuth sodium zirconate lithium cerium doped potassium sodium niobate based ceramic materials, can solve the problems of doping and other problems, and improve sintering activity, High density and good sintering effect

Active Publication Date: 2018-01-05
GUANGZHOU KAILITECH ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no report on potassium sodium niobate based ceramics doped bismuth sodium zirconate lithium cerium

Method used

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  • A kind of preparation method of bismuth sodium zirconate lithium cerium doped potassium sodium niobate based ceramic material
  • A kind of preparation method of bismuth sodium zirconate lithium cerium doped potassium sodium niobate based ceramic material
  • A kind of preparation method of bismuth sodium zirconate lithium cerium doped potassium sodium niobate based ceramic material

Examples

Experimental program
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Effect test

Embodiment 1

[0037] (1) Preparation of potassium sodium niobate based ceramic powder by solid phase method

[0038] Raw material according to general formula K 0.48 Na 0.52 Nb0.95 Sb 0.05 o 3 (x=0.00, y=0.10, number 1 # ), carry out weighing, batching, put in the polyurethane ball mill jar, take absolute ethanol as dispersion medium, after ball milling with planetary ball mill for 12h, the rotating speed is 300rpm, bake 2h under drying lamp to make it dry, then in program control The temperature was continuously raised to 850° C. in an incubator furnace, and kept for 6 hours to obtain potassium sodium niobate-based ceramic powder.

[0039] (2) Granulation and tableting

[0040] Add a polyvinyl alcohol solution with a concentration of 8wt% to the above-mentioned dried powder, mix thoroughly and then granulate, and then press under a pressure of 10MPa to form bismuth sodium zirconate lithium cerium doped niobium with a diameter of 10mm and a thickness of 1.0mm Potassium sodium based ce...

Embodiment 2

[0046] (1) Preparation of potassium sodium niobate based ceramic powder by solid phase method

[0047] According to the general formula 0.97K 0.48 Na 0.52 Nb 0.95 Sb 0.05 o 3 -0.03 (Bi 0.5 Na 0.5 ) 0.9 (Li 0.5 Ce 0.5 ) 0.1 ZrO 3 (x=0.03, y=0.10, number 2 # ), carry out weighing, batching, put in the polyurethane ball mill jar, take absolute ethanol as dispersion medium, after ball milling with planetary ball mill for 12h, the rotating speed is 300rpm, bake 2h under drying lamp to make it dry, then in program control The temperature was continuously raised to 850° C. in an incubator furnace, and kept for 6 hours to obtain potassium sodium niobate-based ceramic powder.

[0048] (2) Granulation and tableting

[0049] Add a polyvinyl alcohol solution with a concentration of 8wt% to the above-mentioned dried powder, mix thoroughly and then granulate, and then press under a pressure of 10MPa to form bismuth sodium zirconate lithium cerium doped niobium with a diameter o...

Embodiment 3

[0055] (1) Preparation of potassium sodium niobate based ceramic powder by solid phase method

[0056] Raw materials according to the general formula 0.9675K 0.48 Na 0.52 Nb 0.95 Sb 0.05 o 3 -0.0325 (Bi 0.5 Na 0.5 ) 0.9 (Li 0.5 Ce 0.5 ) 0.1 ZrO 3 (x=0.0325, y=0.10, number 3 # ), carry out weighing, batching, put in the polyurethane ball mill jar, take absolute ethanol as dispersion medium, after ball milling with planetary ball mill for 12h, the rotating speed is 300rpm, bake 2h under drying lamp to make it dry, then in program control The temperature was continuously raised to 850° C. in an incubator furnace, and kept for 6 hours to obtain potassium sodium niobate-based ceramic powder.

[0057] (2) Granulation and tableting

[0058] Add a polyvinyl alcohol solution with a concentration of 8wt% to the above-mentioned dried powder, mix thoroughly and then granulate, and then press under a pressure of 10MPa to form bismuth sodium zirconate lithium cerium doped niobi...

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Abstract

The invention discloses a preparation method of bismuth sodium zirconate lithium cerium doped potassium sodium niobate base piezoelectric ceramic material, which is characterized in that the method adopts a traditional solid phase method to prepare bismuth sodium zirconate lithium cerium doped potassium niobate Sodium (KNN) based ceramic powder material; and then prepared bismuth sodium zirconate lithium cerium doped KNN based ceramics by granulation and tableting, debinding, sintering and silver polarized traditional electronic ceramics preparation process. The piezoelectric performance of KNN is greatly improved by doping the component (BiNa)(LiCe)ZrO3, and it has better temperature stability, which plays an important role in the application of KNN-based ceramic materials.

Description

technical field [0001] The invention relates to a method for preparing a bismuth sodium zirconate lithium cerium doped potassium sodium niobate (KNN) based ceramic material, specifically, a certain content of zirconium is simultaneously mixed in the preparation process of the potassium sodium niobate based material Sodium bismuth acid lithium cerium, through a specific polarization method to obtain high-voltage properties. It belongs to the field of materials science and engineering. Background technique [0002] Piezoelectric ceramics are widely used in various electronic components such as sensors, drivers, ultrasonic transducers, resonators, and filters because of their excellent performance, simple preparation process, and low cost. At present, lead-containing piezoelectric ceramics widely used in the market are not conducive to the sustainable development of human beings and the ecological environment. High-performance lead-free piezoelectric ceramics, especially high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/495C04B35/622
Inventor 朱建国邢洁陈强谭智蒋来明肖定全
Owner GUANGZHOU KAILITECH ELECTRONICS
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