Abstract

Shock-wave synthesis of micron-size diamond is performed from fullerenes C₆₀--C₁₅₀ powders using the explosive compaction technique with plane shock-wave loading at different pressures in the range of 24-40 GPa. The compacts of different initial compositions consisted of diamond, fee fullerite C₆₀, graphite and amorphous carbon. The most coarse diamond grains sized up to 6 µm were formed at the shock pressure of 24 and 40 GPa in the compacts of initial powder mixture copper-5mass.% fullerite and at shock pressure of 40 GPa in the compact of initial powder mixture copper-10mass.% fullerite. Shock-wave synthesis of diamond is performed without forming intermediate diamondlike phases, such as n-diamond and lonsdaleite ( hexagonal diamond ) in the final products.

© 1995 Optical Society of America