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Degree of graphite-to-diamond transformation [α = MDm/(MDm + MGr)100, where MDm is the mass of obtained diamond and MGr is the mass of residual graphite] as a function of the crystallization media composition (P = 7.5 GPa, τ = 15 h). (a) K2CO3/KCl/C system. (b) K2CO3/H2O/C system. (c) KCl/H2O/C system.
