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BME ceramic dielectric capacitor ceramic material and preparation method thereof

A capacitor ceramic and ceramic dielectric technology is applied in the field of BME ceramic dielectric capacitor ceramic materials and their preparation, which can solve the problems of low volume resistivity at high temperature, low dielectric constant, low dielectric strength, etc. Good performance, the effect of improving the breakdown strength

Inactive Publication Date: 2016-10-26
FUJIAN TORCH ELECTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the base metal X7R multilayer ceramic capacitor technology is mainly controlled by a few developed countries, especially the United States, Japan and other major industrial countries. The widely used X7R MLCC products are mainly used in the civilian field, and there are also such as intermediary The shortcomings of low electrical constant, large dielectric loss, small high-temperature volume resistivity or low dielectric strength limit its application in higher fields such as aerospace and weaponry

Method used

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  • BME ceramic dielectric capacitor ceramic material and preparation method thereof
  • BME ceramic dielectric capacitor ceramic material and preparation method thereof
  • BME ceramic dielectric capacitor ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of preparation method of BME ceramic dielectric capacitor ceramic material of the present invention comprises the following steps:

[0027] ① Separately prepare CaZrO 3 , ZnB 2 o 4 and Li 2 SiO 3 ;

[0028] Preparation of CaZrO 3 : Weigh analytically pure CaCO 3 10g, ZrO 2 12.32g, mixed, ball milled, sieved, and calcined at a temperature of 1150-1200°C, then ball milled and dried to obtain CaZrO 3 ;

[0029] Preparation of ZnB 2 o 4 : Weigh 8.14g ZnO and 12.37g H respectively 3 BO 3 , mixed, ball milled, sieved, and calcined at a temperature of 550-700°C, then ball milled and dried to obtain ZnB 2 o 4 ;

[0030] Preparation of Li 2 SiO 3 : Weigh 7.39g Li respectively 2 CO 3 and 6.0g SiO 2 , mixed, ball milled, sieved, and calcined at a temperature of 550-700°C, then ball milled and dried to obtain Li 2 SiO 3 .

[0031] ② Weigh 100g of BaTiO synthesized by hydrothermal method 3 , 0.5g of CaZrO 3 , 0.6g of rare earth oxide Yb 2 o 3 , 0.0...

Embodiment 2

[0035] A kind of preparation method of BME ceramic dielectric capacitor ceramic material of the present invention comprises the following steps:

[0036] ① Separately prepare CaZrO 3 , ZnB 2 o 4 and Li 2 SiO 3 ;

[0037] Preparation of CaZrO 3 : Weigh analytically pure CaCO 3 10g, ZrO 2 12.32g, mixed, ball milled, sieved, and calcined at a temperature of 1150-1200°C, then ball milled and dried to obtain CaZrO 3 ;

[0038] Preparation of ZnB 2 o 4 : Weigh 8.14g ZnO and 12.37g H respectively 3 BO 3 , mixed, ball milled, sieved, and calcined at a temperature of 550-700°C, then ball milled and dried to obtain ZnB 2 o 4 ;

[0039] Preparation of Li 2 SiO 3 : Weigh 7.39g Li respectively 2 CO 3 and 6.0g SiO 2 , mixed, ball milled, sieved, and calcined at a temperature of 550-700°C, then ball milled and dried to obtain Li 2 SiO 3 .

[0040] ② Weigh 100g of BaTiO synthesized by hydrothermal method 3 , 0.5g of CaZrO 3 , 1.0g of rare earth oxide Ho 2 o 3 , 0.0...

Embodiment 3

[0044] A kind of preparation method of BME ceramic dielectric capacitor ceramic material of the present invention comprises the following steps:

[0045] ① Separately prepare CaZrO 3 , ZnB 2 o 4 and Li 2 SiO 3 ;

[0046] Preparation of CaZrO 3 : Weigh analytically pure CaCO 3 10g, ZrO 2 12.32g, mixed, ball milled, sieved, and calcined at a temperature of 1150-1200°C, then ball milled and dried to obtain CaZrO 3 ;

[0047] Preparation of ZnB 2 o 4 : Weigh 8.14g ZnO and 12.37g H respectively 3 BO 3 , mixed, ball milled, sieved, and calcined at a temperature of 550-700°C, then ball milled and dried to obtain ZnB 2 o 4 ;

[0048] Preparation of Li 2 SiO 3 : Weigh 7.39g Li respectively 2 CO 3 and 6.0g SiO 2 , mixed, ball milled, sieved, and calcined at a temperature of 550-700°C, then ball milled and dried to obtain Li 2 SiO 3 .

[0049] ②Weigh 100g of BaTiO synthesized by hydrothermal method 3 , 2.0g of CaZrO 3 , 1.2g of rare earth oxide Sm 2 o 3 , 0.05...

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Abstract

A BME ceramic dielectric capacitor ceramic material is prepared from BaTiO3, CaZrO3, rare earth oxide, Er2O3, MnO2, BaCO3, Co2O3, ZnB2O4 and Li2SiO3, the materials are matched in a certain proportion and subjected to ball milling, drying, prilling, circular slice green body pressing, organic matter discharging, sintering and the like. The rare earth oxide is one or several of Yb2O3, Ho2O3, Dy2O3, Sm2O3 and Y2O3. An X7R type MLCC material with excellent performance can be sintered at the reducing atmosphere, the preparation technology is simple, the formula design is simple and adjustable, the sintering technology is easy to control, the material is suitable for large-scale production, the uniformity of the material is good, the material has a high dielectric constant, a low dielectric loss and good high-temperature insulation resistance and insulation strength, the production cost of MLCC can be effectively reduced, and the application range of the material is enlarged.

Description

technical field [0001] The invention relates to the technical field of functional ceramics, in particular to a BME ceramic capacitor ceramic material and a preparation method thereof. Background technique [0002] With the rapid development of various types of electronic equipment, such as digital cameras, mobile phones, notebook computers, GPS, satellite receivers and other mobile electronic equipment, the miniaturization and light weight of devices on electronic circuits is an inevitable trend to adapt to electronic components. The surface mount technology (SMD) of the device needs. SMD requires components to be chip components. Multilayer ceramic capacitors (MLCCs) are the most widely used type of chip components in electronic circuits. At the same time, in terms of device miniaturization, a high dielectric constant is required. Under the same capacity condition, the larger the dielectric constant, the smaller the device. [0003] In addition, with the demand and deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/468C04B35/622C04B35/64
CPCC04B35/4682C04B35/622C04B35/64C04B2235/3215C04B2235/3224C04B2235/3225C04B2235/3249C04B2235/3267C04B2235/3275C04B2235/3409C04B2235/3418C04B2235/6582C04B2235/96
Inventor 黄祥贤谢显斌林志盛张子山蔡劲军
Owner FUJIAN TORCH ELECTRON TECH CO LTD
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