PROCESS FOR PRODUCTION OF SYNTHETIC MONOCRYSTALLINE DIAMOND MATERIAL Russian patent published in 2016 - IPC B01J3/06 C30B29/04 C01B31/06 

FIELD: chemistry.

SUBSTANCE: invention relates to process of synthesis of plurality of synthetic monocrystalline diamonds. Proposed method comprises forming multiple seed pads, each having plurality of inoculating diamond monocrystals attached to inert holder or embedded in it, loading of carbon source, metal catalyst and plurality of seed pads into capsule, wherein at least part of carbon source is located at distance less than 0.1 mm from inoculating diamond monocrystals, loading capsule into high pressure and temperature press (HPHT) and exposure of capsule to cycle of HPHT-growth for growth of monocrystalline diamond material on plurality of inoculating diamond monocrystals, wherein cycle HPHT-growth includes initiation HPHT-growth of monocrystalline diamond material on plurality of inoculating diamond monocrystals by increasing pressure and temperature, maintenance HPHT-growth of monocrystalline diamond material on plurality of inoculating diamond monocrystals by means of controlled pressure by controlling growth process and pressure and temperature maintenance and termination HPHT-growth of monocrystalline diamond material on plurality of inoculating diamond monocrystals by reducing pressure and temperature, plurality of inoculating diamond monocrystals are attached to inert holders or embedded therein during cycle of HPHT-growth.

EFFECT: invention enables to obtain for cycle more coarse diamond crystals with uniform morphology.

22 cl, 7 dwg