Diamond/copper composites with well-bonded interface have excellent thermophysical properties. Modified by various means, the diamond-copper interface can sufficiently enhance the thermal conductivity of diamond/copper composites. In this paper, recent progress about two main kinds of interfacial modification methods to prepare diamond/copper composite was reviewed, respectively as the preplating of carbide forming elements on diamond surface and pre-alloying of copper substrate. Preparation process and thermal conduction mechanism of these two modification methods were introduced briefly. The existing problems and development trend of diamond/copper composite preparation and interface modification were discussed.
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