METHOD FOR MANUFACTURING PRODUCTS FROM CERAMIC MATRIX COMPOSITE MATERIAL Russian patent published in 2015 - IPC C04B35/573 C04B35/577 C04B35/80 

FIELD: construction.

SUBSTANCE: method comprises the manufacture of frame made of heat-resistant fiber, filling it with dispersed filler, treatment of frame with coke-forming binder, forming and siliconising of the obtained porous workpiece. Nitrides of high-melting metals (such as silicon and titanium) are used as the dispersed filler, at chemical interaction with carbon of which, high-melting carbides and / or carbonitrides of metals are formed. Siliconising of workpiece is carried out by vapour-liquid-phase method via the capillary condensation of vapours of silicon at a temperature of workpiece not more than 1500°C with the subsequent heating up to 1700-1850°C, maintenance in the mentioned interval of temperatures during 1-3 hours and cooling. Prior to conduct the siliconising process, heat treatment of plastic workpiece is carried out when the temperature of formation of carbides or carbonitrides of metals is of 1300-1400°C.

EFFECT: providing the possibility of manufacturing the large-sized thin-walled products without the use of mechanical processing, as well as improving the reliability of their work in oxidising mediums at high temperatures.

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