A kind of alumina composite ceramic and its preparation method and application

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 reducing scattering, improving mechanical properties, and improving thermal conductivity

Active Publication Date: 2022-07-29
GUANGDONG UNIV OF TECH
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  • 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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  • A kind of alumina composite ceramic and its preparation method and application
  • A kind of alumina composite ceramic and its preparation method and application
  • A kind of alumina composite ceramic and its preparation method and application

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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 ceramic, and its specific preparation method 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, with 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 granulation to obtain a first composite particle 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 rotational 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 ...

Embodiment 2

[0049] Embodiment 2 of the present application provides a second alumina composite ceramic, and its specific preparation method 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, with 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 granulation to obtain a first composite particle with a particle size of 50 μm;

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

Embodiment 3

[0056] Embodiment 3 of the present application provides a third alumina composite ceramic, and its specific preparation method 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, with 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 granulation to obtain a first composite particle with a particle size of 60 μm;

[0059] 3. In 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 rotational 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 cruci...

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Abstract

The application belongs to the technical field of ceramic materials, and in particular relates to an alumina composite ceramic and a preparation method and application thereof. The application provides an alumina composite ceramic, the alumina composite ceramic is composed of composite particles and AlN particles, and the composite particles are composed of Al 2 O 3 , Y 2 O 3 , m‑ZrO 2 The AlN particles are attached to the surface of the composite particles, and the three-dimensional network structure distribution of AlN is formed in the alumina composite ceramic by molding. Through the above structure and composition, the present application provides an alumina composite ceramic and its preparation method and application, which can effectively solve the technical problems of high sintering cost caused by low mechanical properties, low thermal conductivity and high sintering temperature of the existing alumina ceramics. .

Description

technical field [0001] The application belongs to the technical field of ceramic materials, and in particular relates to an alumina composite ceramic and a preparation method and application thereof. Background technique [0002] With the development of science and technology, the 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, marking that traditional printed circuit boards have entered the era of multi-layer substrates. Electronic circuits are increasingly dense and miniaturized, and thermal conductivity has become one of the bottlenecks hindering the further development of printed circuit boards. [0003] In the prior art, 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 relatively...

Claims

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Application Information

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Patent Type & Authority Patents(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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