Process for covering aluminum base composite material layer on complicated surface aluminum diamond product surface

Abstract

The invention discloses a process for covering an aluminum base composite material layer on a complicated surface aluminum diamond product surface. Firstly, nonmetal powder and a bonding agent are mixed as a pasty spraying material; then, a demolding agent is sprayed on the inner side of a molding cavity of a molding mold for die casting of an aluminum diamond composite material product; after thedemolding agent is dried, a layer of isolating agent is sprayed on the demolding agent; after the isolating agent is dried, a layer of paste mixed by the nonmetal powder and the bonding agent is sprayed on the isolating agent; after the paste is dried and cured, the product molding mold is assembled; diamond powder is filled in a cavity, on the inner side sprayed with the paste, in the molding mold; the diamond powder is vibrated and compacted to tightly bond with the dried paste layer; and in the die casting and aluminum permeating process, die-cast aluminum is permeated in the paste layer of the nonmetal powder, and is firmly connected with the aluminum diamond composite material to realize coverage of an aluminum-nonmetal composite material layer, capable of performing machining and plating, on the surface of a cooling device.

Description

Technical field [0001] The invention relates to the technical field of heat sink processing technology, a process for covering an aluminum-non-metallic powder composite material layer on the surface of an aluminum diamond composite material product with a complex profile, and the resultant is a process for covering the aluminum-nonmetal powder composite material with a complex profile. The manufacturing process of the aluminum-diamond composite radiator with non-metal powder composite material layer. Background technique [0002] Aluminum diamond material has the advantages of high thermal conductivity, adjustable thermal expansion coefficient, light weight, high rigidity, and moderate mechanical strength. It has become an ideal preparation material for power module heat sinks such as aerospace and military equipment. [0003] The power module heat sink is the core component of aerospace, military equipment, etc. At present, the high-power power module heat sink has begun to use al...

AI Technical Summary

Problems solved by technology

Heat dissipation devices made of aluminum-diamond composite materials often have complex profiles and need to be welded and packaged with chip materials, so there are high requirements for flatness processing on the surface and requirements for coating processing such as PVD and CVD. Diamond is a kind of high-hard material, and it is very difficult to cut it. At present, it is difficult to directly implement PVD, CVD and other coating processes on the surface of aluminum-diamond composite materials. Therefore, it is necessary to firmly form a layer on the surface of aluminum-diamond. Metals that can be cut and can also be coated with PVD, CVD, etc.

Images