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Medium and low sintering temperature stable ceramic capacitor material and preparation method thereof

A temperature-stable, low-temperature sintering technology, applied in the field of ceramic compositions, can solve problems such as increasing the manufacturing cost of capacitors, and achieve the effects of wide sintering temperature, easy control of sintering process and good uniformity

Inactive Publication Date: 2017-05-31
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these metals greatly increase the manufacturing cost of capacitors, accounting for 30-70% of the production cost according to data reports.

Method used

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  • Medium and low sintering temperature stable ceramic capacitor material and preparation method thereof
  • Medium and low sintering temperature stable ceramic capacitor material and preparation method thereof
  • Medium and low sintering temperature stable ceramic capacitor material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Mix the raw materials evenly according to the raw material composition and mass percentage content of the sintering aid: 16% Bi 2 o 3 , 14%K 2 CO 3 , 12% ZnO, 18% CaF 2 , 18%P 2 o 5 , 22% CaO;

[0040] The mixed raw materials were put into deionized water ball mill for 10 hours, dried at 70°C, calcined at 1150°C, kept for 9 hours at a heating rate of 8°C / min, and naturally cooled to obtain a sintering aid;

[0041] (2) According to the raw material composition and mass percentage content of metal oxide, the raw materials are evenly mixed: 18%Nb2 o 5 , 20% MgO, 22% WO 3 , 17% CaTiO 3 , 23% CuO;

[0042] Add deionized water to the mixed raw materials, ball mill for 9 hours, and dry at a temperature of 70°C to obtain ceramic powder of metal oxides;

[0043] (3) According to the BaTiO 3 On the basis of adding 3% mass percentage of sintering aid and 7% metal oxide stoichiometric ratio for secondary batching, uniform mixing, adding deionized water ball mill for...

Embodiment 2

[0050] (1) Mix the raw materials uniformly according to the raw material composition and mass percentage content of the sintering aid: 8% Bi 2 o 3 , 22%K 2 CO 3 , 4% ZnO, 26% CaF 2 , 10%P 2 o 5 , 30% CaO;

[0051] The mixed raw materials were put into deionized water ball mill for 10 hours, dried at 70°C, calcined at 1150°C, kept for 9 hours at a heating rate of 8°C / min, and naturally cooled to obtain a sintering aid;

[0052] (2) Mix the raw materials evenly according to the raw material composition and mass percentage content of the metal oxide: 2% Nb 2 o 5 , 28% MgO, 30% WO 3 , 9% CaTiO 3 , 31% CuO;

[0053] Add deionized water to the mixed raw materials, ball mill for 9 hours, and dry at a temperature of 70°C to obtain ceramic powder of metal oxides;

[0054] (3) According to the BaTiO 3 On the basis of adding sintering aids with a mass percentage content of 1.5% and a stoichiometric ratio of 8.5% metal oxides for secondary batching, uniform mixing, adding deio...

Embodiment 3

[0061] (1) Mix the raw materials evenly according to the raw material composition and mass percentage content of the sintering aid: 10% Bi 2 o 3 , 20%K 2 CO 3 , 18% ZnO, 12% CaF 2 , 12%P 2 o 5 , 28% CaO;

[0062] The mixed raw materials were put into deionized water ball mill for 10 hours, dried at 70°C, calcined at 1150°C, kept for 9 hours at a heating rate of 8°C / min, and naturally cooled to obtain a sintering aid;

[0063] (2) Mix the raw materials evenly according to the raw material composition and mass percentage content of the metal oxide: 20% Nb 2 o 5 , 14% MgO, 16% WO 3 , 23% CaTiO 3 , 27% CuO;

[0064] Add deionized water to the mixed raw materials, ball mill for 9 hours, and dry at a temperature of 70°C to obtain ceramic powder of metal oxides;

[0065] (3) According to the BaTiO 3 On the basis of adding 2% mass percentage of sintering aid and 8% metal oxide stoichiometric ratio for secondary batching, uniform mixing, adding deionized water ball mill for...

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Abstract

The invention discloses a medium and low sintering temperature stable ceramic capacitor material and a preparation method. The material comprises BaTiO3 as a main material, together with 1-7% of mass of sintering assistant and 0.5-9.5% of mass of metal oxide. The sintering assistant comprises the following raw materials by mass percentage: 1-26% of Bi2O3, 1-24% of K2CO3, 1.2-22% of ZnO, 1.5-28% of CaF2, 2-28% of P2O5 and 3.5-32% of CaO, and the metal oxide comprises the following raw materials by mass percentage: 1-28% of Nb2O5, 0.2-30% of MgO, 0.5-32% of WO3, 0.3-27% of CaTiO3 and 0.1-33% of CuO. The material has a wide sintering temperature (850-1050 DEG C), and is low in dielectric loss, high in dielectric constant, stable in performance, high in mechanical strength, high in reliability, good in uniformity and environment-friendly; a working temperature zone is from -55 DEG C to +250 DEG C; and the material meets severe environment requirements.

Description

technical field [0001] The invention belongs to the field of ceramic compositions characterized by components, in particular to a medium-low temperature sintered ultra-high temperature stable ceramic capacitor material and a preparation method thereof. Background technique [0002] With the rapid development of microelectronic information technology, there are demands for miniaturization, portability, multi-function, digitalization, high reliability and high performance of electronic complete machines, as well as requirements for miniaturization, integration and modularization of components. more and more urgent. The components required by surface mount technology are chip components, and the components that make up these electronic devices must also be reduced in size and weight to adapt to the need for the installation technology of electronic components to change to surface mount technology (SMT). Multilayer ceramic capacitors are the most widely used type of chip compon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/468C04B35/64
Inventor 张宝林肖谧毛陆虹
Owner TIANJIN UNIV
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