FIELD: composite materials.
SUBSTANCE: invention relates to the production of a hollow part of composite material with a ceramic matrix, used in hot sections of turbomachines. A method includes stages, at which a fibrous hollow preform is placed in a mold, while a core of oxidizable material is placed or inserted to the preform; the specified preform is cured, and the core is extracted by core oxidation. The fibrous hollow preform is obtained by laying or connecting fibrous structures around the core or by weaving the preform with a hollow zone for placing the core. At the stage of preform curing, a boundary phase is created on preform fibers, and at least one layer of the ceramic matrix is created by impregnating in a gas phase.
EFFECT: creation of simpler and effective method for the production of a hollow part.
13 cl, 3 dwg
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