FIELD: process engineering.
SUBSTANCE: invention can be used for crystal growing. Proposed apparatus comprises capsule 12 to contain supercritical fluid medium, high-pressure vessel 16 arranged around capsule 12 and designed to contain compressed gas. It incorporates also pressure control device 44 to equalise inner pressure in capsule 12 with compressed gas pressure inside high-pressure vessel 16 and shift metre 41. The later serves to measure deformation of capsule 12 caused by difference between inner and ambient pressure.
EFFECT: process of treatment of materials by supercritical fluid media at relatively high temperatures and pressures, possibility to control pressure difference at capsule walls for reducing their deformation.
20 cl, 14 dwg
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