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Aluminum oxide composite ceramic and preparation method and application thereof

A technology of composite ceramics and alumina, which is applied in the field of ceramic materials, can solve the problems of high sintering temperature, low thermal conductivity, and high sintering cost, and achieve the effects of improving thermal conductivity, improving mechanical properties, and reducing scattering

Active Publication Date: 2021-01-29
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the application provides an alumina composite ceramic and its preparation method and application, which are used to solve the technical problems of alumina ceramics with low mechanical properties, low thermal conductivity, and high sintering cost caused by high sintering temperature

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  • Aluminum oxide composite ceramic and preparation method and application thereof
  • Aluminum oxide composite ceramic and preparation method and application thereof
  • Aluminum oxide composite ceramic and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0042] Embodiment 1 of the present application provides the first alumina composite ceramics, the specific preparation method of which is as follows:

[0043] 1. In parts by mass, 80.7 parts of Al 2 o 3 , 13.6 parts of m-ZrO 2 , 0.7 copies of Y 2 o 3 mixed with ethanol as solvent and Al 2 o 3It is a ball milling medium, mixed on a roller ball mill for 12 hours, and the first composite powder is obtained after mixing and drying;

[0044] 2. Put the first composite powder into a spray granulator, and spray granulate to obtain the first composite particles with a particle size of 50 μm;

[0045] 3. In parts by mass, ball mill 95 parts of the first composite particles and 5 parts of AlN particles on a planetary ball mill at a speed of 250 r / min for 12 hours to obtain the second composite particles;

[0046] 4. Molding the second composite particles to obtain an alumina composite ceramic body;

[0047] 5. Put the alumina composite ceramic body into the boron nitride crucibl...

Embodiment 2

[0049] Embodiment 2 of the present application provides the second alumina composite ceramics, the specific preparation method of which is as follows:

[0050] 1. In parts by mass, 80.7 parts of Al 2 o 3 , 14.6 parts of m-ZrO2, 2.7 parts of Y 2 o 3 mixed with ethanol as solvent and Al 2 o 3 It is a ball milling medium, mixed on a roller ball mill for 24 hours, and the first composite powder is obtained after mixing and drying;

[0051] 2. Put the first composite powder into a spray granulator, and spray granulate to obtain the first composite particles with a particle size of 50 μm;

[0052] 3. In terms of parts by mass, ball mill 92 parts of the first composite particle and 8 parts of AlN particles on a planetary ball mill at a speed of 250 r / min for 8 hours to obtain the second composite powder;

[0053] 4. Molding the second composite particles to obtain an alumina composite ceramic body;

[0054] 5. Put the alumina composite ceramic body into the boron nitride cruci...

Embodiment 3

[0056] Embodiment 3 of the present application provides the third alumina composite ceramics, the specific preparation method of which is as follows:

[0057] 1. In parts by mass, 82.5 parts of Al 2 o 3 , 12.3 parts of m-ZrO2, 1.2 parts of Y 2 o 3 mixed with ethanol as solvent and Al 2 o 3 It is a ball milling medium, mixed on a roller ball mill for 48 hours, and the first composite powder is obtained after mixing and drying;

[0058] 2. Put the first composite powder into a spray granulator, and spray granulate to obtain the first composite particles with a particle size of 60 μm;

[0059] 3. In terms of parts by mass, ball mill 88 parts of the first composite particles and 12 parts of AlN particles on a planetary ball mill at a speed of 250 r / min for 6 hours to obtain the second composite particles;

[0060] 4. Molding the second composite particles to obtain an alumina composite ceramic body;

[0061] 5. Put the alumina composite ceramic body into the boron nitride c...

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Abstract

The invention belongs to the technical field of ceramic materials, and particularly relates to aluminum oxide composite ceramic and a preparation method and application thereof. The invention providesaluminum oxide composite ceramic which is composed of composite particles and AlN particles, the composite particles are composed of Al2O3, Y2O3 and m-ZrO2, the AlN particles are attached to the surfaces of the composite particles, and three-dimensional network structure distribution of AlN is formed in the aluminum oxide composite ceramic through mold pressing. Through the structure and composition, the aluminum oxide composite ceramic and the preparation method and application thereof can effectively solve the technical problem of high sintering cost caused by low mechanical property, low heat-conducting property and high sintering temperature of the existing aluminum oxide ceramic.

Description

technical field [0001] The application belongs to the technical field of ceramic materials, and in particular relates to an alumina composite ceramic and its preparation method and application. Background technique [0002] With the development of technology, printed circuit board (PCB) has become an indispensable electronic component. Since the 1990s, countries around the world have gradually renamed printed circuit boards as electronic substrates (Electronic Substrate), marking that traditional printed circuit boards have entered the era of multilayer substrates. Electronic circuits tend to be denser and miniaturized day by day, and heat conduction has become one of the bottlenecks hindering the further development of printed circuit boards. [0003] In the prior art, the inorganic substrates are mostly made of Al 2 o 3 Ceramic materials are used as the base material. Since the sintering temperature of pure alumina ceramics is above 1800°C, the sintering cost is high; i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622C04B35/645C04B35/80
CPCC04B35/10C04B35/622C04B35/645C04B2235/3225C04B2235/3244C04B2235/3865C04B2235/6562C04B2235/6567C04B2235/96C04B2235/9607
Inventor 伍尚华张威郭伟明
Owner GUANGDONG UNIV OF TECH
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