Effect of Different Preservative Substances on the Formation of Condensed Carbon in Detonation

In this paper, the comparison of the effect of different preservative materials on preserving the condensed carbon obtained from detonation soot shows that the surrounding substance has prominent importance on the formation of condensed carbon in detonation which not only take a preservative effect but also a cooling effect to compress graphitization. For carbon, different circumstance corresponds to different path on carbon phase diagram while detonation product expanding. This provides a clue of improving yield of ultrafine diamond (UFD) obtained from detonation soot. Also in this paper, it proposes the graphitization of graphite crystallite existing in soot and UFD as a criterion to evaluate the preservative effect of different substances.