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Silicon nitride-based ceramic welding sealing component and preparation method thereof

A silicon nitride ceramic and ceramic welding technology, which is applied in the field of metallized ceramic processing, can solve the problems of affecting the high-temperature use effect, low metallization use temperature, poor oxidation resistance, etc., achieve excellent high-temperature use performance, improve strength, and improve The effect of fracture toughness

Active Publication Date: 2021-09-07
湖南省新化县鑫星电子陶瓷有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has a low melting point, poor oxidation resistance, and a low metallization temperature, which affects Si 4 N 3 Effect of High Temperature Application of Ceramics in Sealed Components

Method used

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  • Silicon nitride-based ceramic welding sealing component and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: Silicon nitride-based ceramic welding and sealing components include a silicon nitride ceramic substrate and a metallization layer, wherein the silicon nitride ceramic substrate and its preparation method

[0033] The raw material formula components of the silicon nitride ceramic substrate in the seal by parts by weight: 60 parts of modified silicon nitride, 20 parts of mullite fiber, 5 parts of titanium oxide, 3 parts of aluminum nitride, 2 parts of calcium oxide, poly Acrylamide 8 parts and C 10～16 Alcohol polyoxyethylene polyoxypropylene ether 2 parts.

[0034] According to the preparation method of the silicon nitride ceramic substrate of above-mentioned formula composition, comprise the following steps:

[0035] A1. Preparation of modified silicon nitride: Add 500g of silicon nitride into 1L of absolute ethanol, stir evenly, then add 15g of polymethacrylic acid amine, ultrasonically treat for 60min, filter, and dry to obtain modified silicon nitride....

Embodiment 2

[0040] Embodiment 2: Silicon nitride-based ceramic welding and sealing components include a silicon nitride ceramic substrate and a metallization layer, wherein the silicon nitride ceramic substrate and its preparation method

[0041] The raw material formula components of the silicon nitride ceramic substrate in the seal by parts by weight: 72 parts of modified silicon nitride, 10 parts of mullite fiber, 3 parts of titanium oxide, 5 parts of aluminum nitride, 4 parts of calcium oxide, poly Acrylamide 5 parts and C 10～16 Alcohol polyoxyethylene polyoxypropylene ether 1 part.

[0042] According to the preparation method of the silicon nitride ceramic substrate of above-mentioned formula composition, comprise the following steps:

[0043] A1. Preparation of modified silicon nitride: Add 500g of silicon nitride into 1L of absolute ethanol, stir evenly, then add 5g of polymethacrylic acid amine, ultrasonicate for 30min, filter, and dry to obtain modified silicon nitride.

[0044...

Embodiment 3

[0048] Embodiment 3: Silicon nitride-based ceramic welding and sealing components include a silicon nitride ceramic substrate and a metallization layer, wherein the silicon nitride ceramic substrate and its preparation method

[0049] The raw material formula components of the silicon nitride ceramic substrate in the seal by parts by weight: 65 parts of modified silicon nitride, 15 parts of mullite fiber, 4 parts of titanium oxide, 3 parts of aluminum nitride, 3 parts of calcium oxide, poly Acrylamide 7 parts and C 10～16 Alcohol polyoxyethylene polyoxypropylene ether 3 parts.

[0050] According to the preparation method of the silicon nitride ceramic substrate of above-mentioned formula composition, comprise the following steps:

[0051] A1. Preparation of modified silicon nitride: Add 500g of silicon nitride into 1L of absolute ethanol, stir evenly, then add 10g of polymethacrylic acid amine, ultrasonically treat for 40min, filter, and dry to obtain modified silicon nitride....

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Abstract

The invention discloses a silicon nitride-based ceramic welding sealing component and a preparation method thereof, and relates to the technical field of metallized ceramic processing. The invention discloses a silicon nitride-based ceramic welding sealing component which comprises a silicon nitride ceramic matrix and a metallization layer, the silicon nitride ceramic matrix is prepared from modified silicon nitride, mullite fiber, aluminum nitride, calcium oxide, titanium oxide, a binder and a dispersing agent through the steps of modified silicon nitride preparation, mixing, granulation, primary sintering, secondary sintering and the like; raw materials of the metallization layer comprise copper powder, tungsten powder, copper oxide, yttrium oxide, zinc oxide and an organic binding agent. The invention further discloses a preparation method of the silicon nitride-based ceramic welding sealing component composed of the metallization layer and the silicon nitride ceramic matrix. According to the silicon nitride-based ceramic welding sealing component, the density of the silicon nitride ceramic matrix is improved, the silicon nitride-based ceramic welding sealing component has excellent strength, hardness and fracture toughness, the tensile strength of the sealing component is improved, and the silicon nitride-based ceramic welding sealing component has excellent high-temperature resistance.

Description

technical field [0001] The invention belongs to the technical field of metallized ceramic processing, and in particular relates to a silicon nitride-based ceramic welding sealing component and a preparation method thereof. Background technique [0002] With the development of material technology, ceramic materials are widely used, especially in sealing mechanisms. Ceramic materials are suitable for various sealing components due to their good high temperature resistance, chemical corrosion resistance and thermal conductivity. With the development of high-tech electronic equipment, the performance requirements for sealing components are getting higher and higher. In addition to good sealing performance, metallized ceramics are also required to have excellent pressure resistance, wear resistance and corrosion resistance. , Not easy to aging, etc. At present, ceramic welding and sealing components are composed of metallized ceramics, and the ceramic materials used in the metal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/584C04B35/634C04B35/80C04B41/88C04B35/64
CPCC04B35/584C04B35/80C04B35/63444C04B35/63488C04B41/009C04B41/5188C04B35/626C04B41/88C04B35/64C04B2235/3232C04B2235/3865C04B2235/3208C04B2235/5228C04B2235/5427C04B2235/96C04B2235/661C04B41/5183C04B41/5133C04B41/5049C04B41/5075C04B41/5045C04B41/5127C04B41/0072
Inventor 曹建平曹建辉刘平
Owner 湖南省新化县鑫星电子陶瓷有限责任公司
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