EXPERIMENTAL STUDIES OF DIAMOND CRYSTALLIZATION ZONES IN A RECESSED ANVIL-TYPE HIGH PRESSURE APPARATUS

摘要

In this paper we discuss experiments on diamond synthesis in a recessed anvil-type high pressure apparatus with a uniform accommodation of powdered reaction components (a graphite powder and particles of the Ni-Mn alloy) in a reaction cell. Diamond crystallization zones have been studied by electron microscopy on the fracture surfaces of sintered compacts produced at different heating current powers in the course of synthesis. The experimental data have verified the results of the previous computer-aided modeling of crystallization zones of diamonds of various habitus.