Abstract
The present study provides an efficient approach for nano-functionalization of diamond powders. Boron nanostructure can be grown on diamond particle entire surface by a simple heat-treatment process. After treatment, various boron nanoforms were grown on the diamond particle surface at different processing temperature. High-density boron nanowires (BNWs) grow on the diamond particle entire surface at 1333K, while nanopillars cover diamond powders when the heat treatment process is performed at 1393K. The influence of the pretreatment temperature on the microstructure and thermal conductivity of Cu/diamond composites were investigated. Cu/diamond composites with high thermal conductivity of 670W(mK)−1 was obtained, which was achieved by the formation of large number of nanowires and nanopillars on the diamond particle surface.
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