Aluminum diamond composite material coated with aluminum silicon carbide layer on surface and preparation method and application thereof

A technology of silicon carbide layer and composite materials, which is applied in the preparation of aluminum-diamond composite materials and the field of aluminum-diamond composite materials, which can solve the problems of easy exposure of diamond particles and limit the use range of aluminum-diamond products, so as to reduce consumption and energy consumption, Reduce the difficulty of machining and reduce the effect of surface roughness

Pending Publication Date: 2021-07-23
HUNAN HARVEST TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The invention provides an aluminum-diamond composite material with an aluminum-silicon carbide layer on its surface and its preparation method and application, in order to solve the problem that the diamond particles are easily exposed during the preparation process of aluminum-diamond parts produced in China, which limits the use of aluminum-diamond products. range of technical issues

Method used

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  • Aluminum diamond composite material coated with aluminum silicon carbide layer on surface and preparation method and application thereof
  • Aluminum diamond composite material coated with aluminum silicon carbide layer on surface and preparation method and application thereof
  • Aluminum diamond composite material coated with aluminum silicon carbide layer on surface and preparation method and application thereof

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preparation example Construction

[0041] figure 1 It is a schematic structural view of the aluminum-diamond composite material with an aluminum-silicon carbide layer on the surface prepared in preferred embodiment 1 of the present invention; figure 2 It is the A-A sectional view of the preferred embodiment 1 of the present invention; image 3 It is a front view of the structure of the aluminum-diamond component of the surface aluminum-silicon carbide layer prepared in preferred embodiment 2 of the present invention; Figure 4 It is the B-B sectional view of the preferred embodiment 2 of the present invention; Figure 5 It is a front view of the structure of the aluminum diamond part of the surface aluminum silicon carbide layer prepared in the preferred embodiment 3 of the present invention; Figure 6 It is a structural view of preferred embodiment 3 of the present invention; Figure 7 It is a front view of the structure of the aluminum-diamond component of the surface aluminum-silicon carbide layer prepar...

Embodiment 1

[0064] Aluminum-diamond composite material coated with aluminum-silicon carbide layer on the surface, including: aluminum-diamond core material and surface aluminum-silicon carbide layer coated on the outside of the aluminum-diamond core material; the aluminum-diamond core material includes pure aluminum and surface-modified diamond particles; the surface The aluminum silicon carbide layer is pure aluminum and silicon carbide particles, and the volume fraction of silicon carbide particles is 65%.

[0065] Such as figure 1 and figure 2 Shown, the preparation method of the aluminum-diamond composite material of surface coating aluminum-silicon carbide layer, comprises the following steps:

[0066] Preparation of silicon carbide preforms: The mixed granulated silicon carbide powder with a particle size of 45 μm and a particle size of 100 μm is molded at 150 MPa into a frame of 40 mm × 40 mm × 2 mm to prepare a silicon carbide preform blank, which is kept at a constant temperatu...

Embodiment 2

[0071] Aluminum diamond parts with aluminum silicon carbide layer on the surface, including: aluminum diamond core material and surface aluminum silicon carbide layer coated on the aluminum diamond core material; aluminum diamond core material includes 6063 aluminum alloy and surface modified diamond particles; surface The aluminum silicon carbide layer includes 6063 aluminum alloy and silicon carbide particles, and the volume fraction of silicon carbide particles is 70%.

[0072] Such as image 3 and Figure 4 Shown, the preparation method of the aluminum diamond component of surface aluminum silicon carbide layer, comprises the following steps:

[0073] Preparation of silicon carbide preform: gel injection molding of silicon carbide particles with a particle size of 45 μm into a frame of 23mm×23mm×6mm to prepare a silicon carbide preform blank, sintering at a constant temperature of 1000°C for 1 hour under vacuum conditions to obtain a porosity of 40% SiC preforms;

[007...

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Abstract

The invention discloses an aluminum diamond composite material coated with an aluminum silicon carbide layer on the surface and a preparation method and application thereof. The aluminum diamond composite material comprises an aluminum diamond core material and the surface aluminum silicon carbide layer coated outside the aluminum diamond core material; the aluminum diamond core material comprises an aluminum matrix and surface-modified diamond particles; the surface aluminum silicon carbide layer comprises an aluminum substrate and silicon carbide particles, the volume fraction of the silicon carbide particles is 60%-75%, and the aluminum substrate in the surface aluminum silicon carbide layer and the aluminum substrate in the aluminum diamond core material are continuous distribution phases. According to the aluminum diamond composite material coated with the aluminum silicon carbide layer on the surface, the surface aluminum silicon carbide layer can prevent the diamond particles in the aluminum diamond core material from being exposed, and the machining difficulty and the surface roughness of the aluminum diamond composite material coated with the aluminum silicon carbide layer on the surface are reduced. The surface aluminum silicon carbide layer is high in heat conductivity and expansion coefficient and is matched with the aluminum diamond core material, and the interface stress between the aluminum silicon carbide layer and the aluminum diamond core material is low, so that the application in the aerospace field with high temperature cycle requirements is met.

Description

technical field [0001] The invention relates to the field of electronic packaging materials used in the electronic information industry, in particular to an aluminum-diamond composite material whose surface is coated with an aluminum-silicon carbide layer. In addition, the present invention also relates to a preparation method and application of an aluminum-diamond composite material comprising the above-mentioned surface-coated aluminum-silicon carbide layer. Background technique [0002] With the mass application of high-power third-generation semiconductor gallium nitride and other chips and the gradual installation of high-energy laser weapons, the heat dissipation requirements for packaging materials are becoming increasingly stringent. Existing packaging materials such as copper / molybdenum / copper, aluminum silicon, aluminum silicon carbide, etc. have limited heat dissipation capabilities and are difficult to meet the packaging needs of high-power electronic devices. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/88C04B35/565C04B35/622
CPCC04B41/88C04B41/5155C04B41/009C04B35/565C04B35/622C04B41/4523C04B41/4521C04B41/4519C04B41/0072
Inventor 熊德赣陈柯杨盛良陈迎龙肖浩蒋文评傅志袁惠程
Owner HUNAN HARVEST TECH DEV
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