Diamond/Cu Composites Fabricated by Pressureless Infiltration Method

摘要

Copper matrix composites reinforced diamond (diamond/Cu) composites were successfully fabricated by pressureless infiltration method. The composition and structure of the coating are investigated using scanning electron microscopy(SEM), X-ray diffraction. The results indicate that the composition of the coatings is WC which is uniform on diamond. The microstructure and properties of diamond/Cu composites were investigated. The results show that the diamond/Cu composites were compact and WC transition layers onto diamond can greatly promote the compatibility between diamond and Cu. Further investigation reveals that the diamond/Cu composites possess low density (5.3907g/cm~3), excellent thermal management function as a result of high thermal conductivity up to 761.1 W/(m·K) and a fine tightness (2.5×10~(-10) Pa·m~3/s).