Formation of pseudohemimorphic planar-rounded diarnond crystals as a result of directedrecrystallization and sub- sequent one-side dissolvingwas studied in its experimental modelling. Experimentswere carried out in Fe-Ni-C sys- tem within ranges of5.5-6.0°C GPa pressure and 1400-1500°C temperature.Wanted pseudohemimorphic crystals were obtained aswith a gradual transition of the flat face form intorounded one, so with the sharp step between them.
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