Abstract
Characteristics and properties of detonation-synthesized nanodiamond (UDD) powder and polycrystalline micron (PDD) powders produced by high pressure–high temperature sintering of detonation-synthesized diamond and a subsequent crushing of the resulting compacts have been described. It has been shown that during the sintering in the diamond stability region the phase composition of the superhard material under study changes and the grain secondary recrystallization takes place. As a result a porous material with the nanostructure, which when ground to the micron powder size exhibit good polishing properties, is produced.
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