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Glass powder and its preparation method, piezoelectric ceramics and its preparation method, piezoelectric ceramic device

A piezoelectric ceramic and glass powder technology, which is applied in the field of electronic ceramics, can solve the problems of piezoelectric ceramic stoichiometric ratio deviation, damage to human health, performance degradation, etc., and achieve accurate stoichiometric ratio, good environmental protection, and high electromechanical coupling coefficient Effect

Active Publication Date: 2021-11-23
SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The sintering temperature of lead zirconate titanate-based piezoelectric ceramics is usually around 1200-1300°C, and the melting point of lead compounds is low. When sintering at high temperature, it will inevitably cause a large amount of volatilization of lead, which not only leads to the deviation of the stoichiometric ratio of piezoelectric ceramics. The originally designed formula degrades its performance, and at the same time causes harm to the environment and damages human health

Method used

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  • Glass powder and its preparation method, piezoelectric ceramics and its preparation method, piezoelectric ceramic device
  • Glass powder and its preparation method, piezoelectric ceramics and its preparation method, piezoelectric ceramic device
  • Glass powder and its preparation method, piezoelectric ceramics and its preparation method, piezoelectric ceramic device

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preparation example Construction

[0053] According to another aspect of the present invention, there is provided a method for preparing the above-mentioned glass powder, comprising: mixing all raw materials uniformly, and then sequentially melting, cooling and pulverizing to obtain the glass powder. The process of the method is reasonable and simple, and the glass powder with low melting range and good chemical stability and thermal stability can be obtained.

[0054] Preferably, the melting temperature is 1100-1300°C, preferably 1150-1250°C. The above melting temperature is typically but not limited to 1100°C, 1120°C, 1140°C, 1150°C, 1160°C, 1180°C, 1200°C, 1220°C, 1240°C, 1250°C, 1260°C, 1280°C or 1300°C. When the melting temperature is within the above range, a uniform glass liquid without bubbles can be formed, the chemical stability and thermal stability of the glass powder are better, and the melting range of the glass powder is lower.

[0055] Optionally, the steps of drying and sieving are also includ...

Embodiment 1

[0103] A kind of glass powder, is prepared from the raw material of following parts by weight: Bi 2 o 3 50 parts, Sb 2 o 3 20 copies, B 2 o 3 20 parts, ZnO 5 parts and SiO 2 5 parts, the particle size of the glass powder is 1.7 μm.

Embodiment 2

[0105] A kind of glass powder, is prepared from the raw material of following parts by weight: Bi 2 o 3 60 parts, Sb 2 o 3 10 copies, B 2 o 3 30 parts, ZnO 10 parts and SiO 2 3 parts, the particle size of the glass powder is 1.7 μm.

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Abstract

The invention relates to the field of electronic ceramics, and specifically provides a glass powder and a preparation method thereof, a piezoelectric ceramic and a preparation method thereof, and a piezoelectric ceramic device. The glass powder is mainly composed of Bi in specific parts by weight 2 o 3 , Sb 2 o 3 , B 2 o 3 , ZnO and SiO 2 Prepared. The piezoelectric ceramics include the above-mentioned glass powder, matrix material, optional CaCO 3 and optionally Li 2 CO 3 . The glass powder can be used as a sintering aid for piezoelectric ceramics, reducing the sintering temperature of piezoelectric ceramics from 1150-1260°C to 850-1050°C, effectively avoiding the volatilization of lead compounds caused by high-temperature sintering and avoiding piezoelectric The stoichiometric ratio of the ceramic deviates from the originally designed formula, which ensures the piezoelectric performance of the ceramic and is more environmentally friendly. The piezoelectric ceramic includes the above-mentioned glass powder, so it has the advantages of low sintering temperature, accurate stoichiometric ratio and good piezoelectric performance.

Description

technical field [0001] The invention relates to the field of electronic ceramics, in particular to a glass powder and a preparation method thereof, a piezoelectric ceramic and a preparation method thereof, and a piezoelectric ceramic device. Background technique [0002] Piezoelectric ceramics are widely used in buzzers, transformers, filters, sensors, speakers, motors and other fields due to their excellent piezoelectric effect. Due to the huge difference in performance between lead-free piezoelectric ceramics and lead zirconate titanate-based piezoelectric ceramics, the series of materials based on lead zirconate titanate are still the piezoelectric materials with the most in-depth research and the widest industrial application. [0003] The sintering temperature of lead zirconate titanate-based piezoelectric ceramics is usually around 1200-1300°C, and the melting point of lead compounds is low. When sintering at high temperature, it will inevitably cause a large amount of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/066C03B5/16C04B35/491C04B35/622C04B35/63
CPCC03B5/16C03C3/066C04B35/491C04B35/622C04B35/6303C04B2235/3206C04B2235/3251C04B2235/3258C04B2235/3279C04B2235/3284C04B2235/365C04B2235/5436C04B2235/5445C04B2235/656C04B2235/6567
Inventor 杨月霞杨彬应红刘光明李娓
Owner SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD