Ceramic support for microwave magnetron and preparation method of ceramic support

A support and ceramic matrix technology, which is applied in the field of metallized ceramic processing, can solve the problems of easy oxidation of aluminum nitride ceramics, achieve the effect of improving ceramic performance, density and mechanical properties, and reducing raw material costs and energy consumption costs

Active Publication Date: 2020-08-11
HUNAN MEICHENG CERAMIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a metallized ceramic and a preparation method thereof, which are used on a ceramic support body of a microwave magnetron. Excellent sealing strength, which solves the problem of easy oxidation of aluminum nitride ceramics at high temperature and reduces the preparation cost

Method used

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  • Ceramic support for microwave magnetron and preparation method of ceramic support

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Effect test

Embodiment 1

[0037] Embodiment 1: The ceramic support body for microwave magnetron comprises a ceramic substrate and a metallized layer, wherein the ceramic substrate and its preparation method

[0038] The raw material formula components of the ceramic matrix in the ceramic support body in parts by weight: 75 parts of silicon carbide-triazole silane-aluminum nitride mesh matrix, 20 parts of blast furnace slag, 3 parts of dispersant and 2 parts of defoaming agent. Wherein, the dispersant is sodium hexametaphosphate, and the defoaming agent is alkyl silicone oil.

[0039] According to the preparation method of the ceramic matrix of above-mentioned formula composition, comprise the following steps:

[0040] A1. Preparation of silicon carbide-triazole silane-aluminum nitride mesh film substrate:

[0041] Place the aluminum nitride ceramic powder in a 5% oxygen atmosphere, and oxidize it at 1000° C. for 30 minutes to obtain an aluminum oxide film on the surface of the aluminum nitride ceramic...

Embodiment 2

[0049] Embodiment 2: The ceramic support body for microwave magnetron comprises a ceramic substrate and a metallized layer, wherein the ceramic substrate and its preparation method

[0050] The raw material formula components of the ceramic matrix in the ceramic support body in parts by weight: 77 parts of silicon carbide-triazole silane-aluminum nitride mesh matrix, 15 parts of blast furnace slag, 5 parts of sodium hexametaphosphate and 3 parts of alkyl silicone oil.

[0051] The preparation method of the ceramic matrix in Example 2 is the same as in Example 1, and the specific steps refer to Example 1. It is worth noting that in the A1 step, 1-phenyl-3-hydroxyl-1,2,4-triazole, The mass ratio of sodium ethoxide solution and 3-chloropropyltrimethoxysilane is 1:1:2, the mass ratio of silicon carbide powder and triazole silane compound is 1:2, the surface modified silicon carbide and oxidized nitrogen The mass ratio of aluminum oxide is 1:7.

Embodiment 3

[0052] Embodiment 3: The ceramic support body for microwave magnetron comprises a ceramic substrate and a metallized layer, wherein the ceramic substrate and its preparation method

[0053] The raw material formula components of the ceramic matrix in the ceramic support body in parts by weight: 83 parts of silicon carbide-triazole silane-aluminum nitride mesh matrix, 12 parts of blast furnace slag, 4 parts of sodium hexametaphosphate and 1 part of alkyl silicone oil.

[0054] The preparation method of the ceramic matrix in Example 3 is the same as in Example 1, and the specific steps refer to Example 1. It is worth noting that in the A1 step, 1-phenyl-3-hydroxyl-1,2,4-triazole, The mass ratio of sodium ethoxide solution and 3-chloropropyltrimethoxysilane is 1:2:1, the mass ratio of silicon carbide powder and triazole silane compound is 1:3, the surface modified silicon carbide and oxidized nitrogen The mass ratio of aluminum oxide is 1:8.

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Abstract

The invention discloses a ceramic support for a microwave magnetron and a preparation method of the ceramic support, and relates to the technical field of metalized ceramic processing. The ceramic support for a microwave magnetron comprises a ceramic matrix and a metalized layer. The ceramic matrix is prepared from raw materials such as a silicon carbide-triazole silane-aluminum nitride net-shapedmatrix, blast furnace slag, a dispersing agent and a defoaming agent through the steps of preparation of the silicon carbide-triazole silane-aluminum nitride net-shaped film coating matrix, mixing, granulation, sintering and the like. Raw materials of the metalized layer comprise titanium powder, copper powder, clay and a binder. The invention further discloses a preparation method of the ceramicsupport composed of the metalized layer and the ceramic matrix. The ceramic support for a microwave magnetron provided by the invention has high density and tensile strength, excellent tensile strength, toughness, high temperature resistance and thermal conductivity, the cost of raw materials can be reduced, and the purposes of energy conservation and environmental protection can be achieved.

Description

technical field [0001] The invention belongs to the technical field of metallized ceramic processing, and in particular relates to a ceramic support used on a magnetron in a microwave oven and a preparation method thereof. Background technique [0002] With the development of science and technology, magnetrons are widely used in electronics, electric power, chemical industry and other fields. As one of its core components, the demand for ceramic supports is increasing year by year. At present, the ceramic support used in the microwave magnetron is composed of metallized ceramic tubes, and the materials used in the metallization process mainly include aluminum oxide, silicon dioxide, silicon carbide, silicon nitride, etc., among which The most widely used material is mainly aluminum oxide, and then the ceramic is metallized, so the metal layer and the ceramic substrate must have good wettability. In the existing alumina ceramic support body, the alumina content is more than ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/582C04B35/622C04B35/626C04B41/88
CPCC04B35/581C04B35/622C04B35/62204C04B35/62615C04B35/6264C04B35/6265C04B35/62655C04B35/62695C04B41/009C04B41/5127C04B41/5177C04B41/88C04B2235/3826C04B2235/447C04B2235/96C04B2235/9607C04B41/5037C04B41/5133
Inventor 方豪杰贺亦文张晓云曾雄
Owner HUNAN MEICHENG CERAMIC TECH
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