Preparation method of diamond particle reinforced copper-based composite material parts with high volume fraction

A technology of copper-based composite materials and diamond particles, which is applied in the field of metal materials, can solve the problems of high production cost and low production efficiency, and achieve the effects of simple production equipment, improved thermal conductivity, and improved holding force
CN101768706AInactive Publication Date: 2010-07-07UNIV OF SCI & TECH BEIJING
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2010-07-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of diamond particle reinforced copper-based composite material parts with high volume fraction, belonging to the field of metal materials. The preparation method is characterized in that the composite material comprises copper or copper alloy, diamond particles and an intermediate layer, wherein the volume fraction of the copper or the copper alloy is 32-45 percent, and the volume fraction of the diamond particles and the intermediate layer is 55-68 percent. The preparation method comprises the following steps of: firstly forming a TiC-Ti composite thin plating layer on the surface of the diamond by adopting a vacuum salt bath plating method, then adding an appropriate amount of caking agent into modified diamond powder and pressing into a porous prefabricated blank according to the shape of the parts; and finally putting the porous prefabricated blank and the copper or the copper alloy into a vacuum condition together for carrying out pressureless infiltration treatment to obtain the diamond-copper composite material parts with high volume fraction and high density. The invention has the advantages that the diamond-copper composite material parts with high volume fraction and the complex shape can be directly prepared, and the composite material parts have high density, even tissue distribution and low production cost, and can realize large-batch production.
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Description

technical field

[0001] The invention belongs to the field of metal materials, and relates to a diamond-copper composite (Diamond-copper composites, DCC) and a preparation method thereof. Background technique

[0002] Diamond has excellent physical and chemical properties, and its thermal conductivity can reach up to 2200W.m -1 .K -1 , which is the highest thermal conductivity of all known substances in nature, its hardness is as high as 100GPa, and its thermal expansion coefficient is about 0.8-1.0×10 -6 K -1 . In addition, diamond also has a series of advantages such as stable chemical properties and high wear resistance. As an engineering material, copper has excellent electrical conductivity and high thermal conductivity, and its thermal conductivity is 400W m -1 .K -1 , the coefficient of thermal expansion is 17×10 -6 K -1 . Therefore, the double connected structure composite material (DCC, Diamond-Copper Composites) composed of diamond particles and copper has ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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