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Insulating ring for microwave magnetron and preparation method of the insulating ring

An insulating ring and magnetron technology, applied in the field of metallized ceramic processing, can solve the problem of easy oxidation of aluminum nitride ceramics, and achieve the effects of improving tensile strength, surface quality and overall performance.

Active Publication Date: 2020-08-07
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 an insulating ring for a microwave magnetron and a preparation method thereof, which is used on a support body of a microwave magnetron. The main purpose is to provide a metallized ceramic with high thermal conductivity, which improves the The sealing strength between the substrate and the metallization layer solves the problem of easy oxidation of aluminum nitride ceramics at high temperature and reduces the preparation cost

Method used

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  • Insulating ring for microwave magnetron and preparation method of the insulating ring
  • Insulating ring for microwave magnetron and preparation method of the insulating ring
  • Insulating ring for microwave magnetron and preparation method of the insulating ring

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Effect test

Embodiment 1

[0047] The insulating ring for the microwave magnetron of the present embodiment comprises a ring-shaped ceramic substrate and a metallized layer, and the preparation method of the metallized layer comprises the following steps:

[0048] A1: Prepare mixed metal powder; put 8 parts by weight of titanium powder, 3 parts of aluminum powder, 60 parts of copper powder and 10 parts of clay particles into a drying furnace for drying, and then perform ball milling. The frequency of the ball mill is 20 Hz, and the ball milling time is 15h; after ball milling, separate with filter screen to obtain mixed metal powder;

[0049] A2: Prepare metallization paste; add 1 part of binder to the metal mixed powder obtained in step A1, and the binder is mixed according to the weight ratio of terpineol: polyvinyl alcohol = 2:1; mix evenly to obtain metal ointment;

[0050] A3: Configuration of fluxing agent: 0.5 part of fluxing agent NaF, K 2 ZrF 6 70 parts, 0.01 part of cerium chloride, 0.01 p...

Embodiment 2

[0067] The insulating ring for the microwave magnetron of the present embodiment comprises a ring-shaped ceramic substrate and a metallized layer, and the preparation method of the metallized layer comprises the following steps:

[0068] A1: Preparation of mixed metal powder; 20 parts by weight of titanium powder, 5 parts of aluminum powder, 70 parts of copper powder and 20 parts of clay particles were placed in a drying furnace for drying, and then ball milled. The frequency of the ball mill was 30 Hz, and the ball milling time was 25h; after ball milling, separate with filter screen to obtain mixed metal powder;

[0069] A2: Prepare metallization paste; add 3 parts of binder to the metal mixed powder obtained in step A1, and the binder is mixed with polyvinyl alcohol = 2:3 by weight; then mix evenly to obtain metallization paste;

[0070]A3: Configuration of plating flux: 1.5 parts of NaF, K 2 ZrF 6 120 parts, 0.1 part of cerium chloride, 0.1 part of lanthanum chloride an...

Embodiment 3

[0087] The insulating ring for the microwave magnetron of the present embodiment comprises a ring-shaped ceramic substrate and a metallized layer, and the preparation method of the metallized layer comprises the following steps:

[0088] A1: Preparation of mixed metal powder; 14 parts by weight of titanium powder, 4 parts of aluminum powder, 65 parts of copper powder and 15 parts of clay particles were placed in a drying furnace for drying, and then ball milled. The frequency of the ball mill was 25 Hz, and the ball milling time was 20h; after ball milling, separate with filter screen to obtain mixed metal powder;

[0089] A2: Prepare metallization paste; add 2 parts of binder to the metal mixed powder obtained in step A1, and the binder is mixed according to the weight ratio of terpineol: polyvinyl alcohol = 2:2.5; mix evenly to obtain metallization paste;

[0090] A3: The configuration of the plating flux: the flux consists of 1 part of NaF, K 2 ZrF 6 90 parts, 0.05 part...

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Abstract

The invention discloses a supporting body for a microwave magnetron and relates to the technical field of metallized ceramic processing. The supporting body includes an annular ceramic matrix and a metallized layer, and is prepared from silicon carbide-triazole silane-aluminum nitride mesh matrix, blast furnace slag, strontium titanate, a dispersing agent, a defoaming agent and other raw materialsthrough the steps of silicon carbide-triazole silane-aluminum nitride mesh laminated matrix preparation, mixing, granulation, sintering and the like. Raw materials of the metallization layer comprisetitanium powder, aluminum powder, copper powder, clay and a binder. The invention further discloses a preparation method of the support body composed of the metallization layer and the annular ceramic matrix. The insulating ring for the microwave magnetron has high density and tensile strength, has excellent tensile strength, toughness, high temperature resistance and thermal conductivity, can reduce the cost of raw materials, and achieves the purposes of energy conservation and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of metallized ceramic processing, and in particular relates to an insulating ring for a microwave magnetron and a preparation method thereof. Background technique [0002] With the development of science and technology, magnetrons and magnetron supports are widely used in the fields of electronics, electric power, and chemical industry. As one of its core components, the demand for support bodies is increasing year by year. At present, the support body used in the microwave magnetron is composed of a metallized ceramic tube, and the substrate 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. Therefore, the metal layer and the ring-shaped ceramic substrate need to have good wettability. In the existing alumina support body, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/88C04B35/581C04B35/622C04B35/63C04B35/632H01J23/12H01J25/50
CPCC04B35/581C04B35/622C04B35/6303C04B35/632C04B41/009C04B41/5177C04B41/88C04B2235/3217C04B2235/3232C04B2235/3826C04B2235/5436C04B2235/602C04B2235/656C04B2235/6567H01J23/12H01J25/50C04B41/4535C04B41/5133C04B41/5127C04B41/5155C04B41/5037C04B41/474C04B41/4869C04B41/5011C04B41/5012C04B41/0072
Inventor 方豪杰贺亦文张晓云曾雄
Owner HUNAN MEICHENG CERAMIC TECH
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