Preparation method of hollow aluminum oxide ball/silicon carbide synergetically enhanced aluminum-based composite material

A hollow alumina and reinforced aluminum-based technology is applied in the field of preparation of hollow alumina balls/silicon carbide synergistically reinforced aluminum-based composite materials, which can solve the problems of high thermal expansion coefficient, low mechanical strength and high density, and achieves an increase in volume fraction, The effect of improving mechanical strength and high strength

Active Publication Date: 2017-08-11
西安明科微电子材料有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of hollow alumina sphere / silicon carbide reinforced aluminum matrix composite material, which solves the problems of high density, low mechanical strength and high thermal expansion coefficient of existing alumina reinforced aluminum matrix composite materials

Method used

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  • Preparation method of hollow aluminum oxide ball/silicon carbide synergetically enhanced aluminum-based composite material
  • Preparation method of hollow aluminum oxide ball/silicon carbide synergetically enhanced aluminum-based composite material
  • Preparation method of hollow aluminum oxide ball/silicon carbide synergetically enhanced aluminum-based composite material

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Embodiment 2

[0041] Identical with embodiment 1 method, difference is:

[0042]In the first step, when preparing M1, the diameter of the hollow alumina ball is 0.5-1.0mm, and the mass ratio of the silicon carbide powder is 15%;

[0043] Wherein, the silicon carbide powder is formed by mixing silicon carbide powder with a particle size of 9um, silicon carbide powder with a particle size of 45um and silicon carbide powder with a particle size of 75um according to a mass ratio of 1:1:1;

Embodiment 3

[0045] The method is the same as in Example 1, the difference is:

[0046] In the first step, when preparing M1, the diameter of the hollow alumina ball is 1.0-1.5mm, and the mass ratio of the silicon carbide powder is 1%;

[0047] Wherein, the silicon carbide powder is formed by mixing silicon carbide powder with a particle size of 10um, silicon carbide powder with a particle size of 50um and silicon carbide powder with a particle size of 80um according to a mass ratio of 1:1:1;

Embodiment 4

[0049] The method is the same as in Example 1, the difference is:

[0050] In the first step, when preparing M1, the diameter of the hollow alumina ball is 1.5-2mm, and the mass ratio of the silicon carbide powder is 20%;

[0051] Wherein, the silicon carbide powder is formed by mixing silicon carbide powder with a particle size of 11um, silicon carbide powder with a particle size of 40um and silicon carbide powder with a particle size of 85um in a mass ratio of 1:1:1;

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Abstract

The invention provides a preparation method of a hollow aluminum oxide ball / silicon carbide synergetically enhanced aluminum-based composite material. Hollow aluminum oxide balls and micron-level silicon carbide with different sizes are used as enhancement bodies, so that the overall density of the composite material is reduced on the premise of guaranteeing the mechanical property and a low thermal expansion coefficient. The adoption of the hollow aluminum oxide balls aims at reducing the density of the whole material to the maximum extent due to the characteristic of high strength of used aluminum oxide ceramic and the hollow structures of hollow aluminum oxide balls; furthermore, the interface activation energy of aluminum oxide and aluminum is relatively low; and after silicon carbide particles are added, the composite interface activation energy can be enhanced, so that the mechanical property of the composite material is higher. Due to different particle size ratios, the volume fractions of the enhancement bodies can be increased to the maximum extent, so that the mechanical strength of the composite material is enhanced, and the toughness of the aluminum and the rigidity of the enhancement bodies can reach the optimal ratios.

Description

technical field [0001] The invention relates to a method for preparing a hollow alumina ball / silicon carbide synergistically reinforced aluminum matrix composite material. Background technique [0002] High-strength and lightweight ultra-light materials have always been the focus of many weight-sensitive industries, and play an important role in applications such as aviation, aerospace, drones, high-speed trains, new energy vehicles, boats, robots, and exoskeletons. The invention mainly prepares a new generation product of novel aluminum oxide / silicon carbide composite reinforced aluminum matrix composite material. It is a special material designed for structural parts. It mainly refers to the combination of aluminum and hollow alumina balls / silicon carbide ceramics into a packaging material with low density, high strength and low expansion coefficient to solve the contradiction between high strength and light weight of structural parts. [0003] Studies have shown that dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10
CPCC22C1/1015C22C1/1036C22C1/1021C22C1/1047
Inventor 刘昌涛王云涛刘波波
Owner 西安明科微电子材料有限公司
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