METHOD OF MANUFACTURING PRODUCTS FROM COMPOSITE MATERIALS BASED ON MATRIX FROM METAL CARBIDES, OBTAINED WITH APPLICATION OF METHOD OF REGULATED INTRODUCTION OF METAL INTO PORES OF CARBON-CONTAINING MATERIAL OF WORKPIECE Russian patent published in 2015 - IPC C04B35/56 C04B41/88 C04B35/80 

FIELD: chemistry.

SUBSTANCE: method of manufacturing products from composite materials based on a matrix from metal carbides includes the production of a workpiece from a porous carbon-containing material with low density and high open porosity and its metallation by a vapour-liquid phase method. Introduction of metal into pores of the workpiece material is realised by portions in 2 or more doses, alternating it with the portion introduction of carbon by soaking with a coke-forming binding agent with its following solidification and carbonisation. In order to introduce a limited quantity of metal into the pores of the carbon-containing material at intermediate stages of metallation, the workpiece and crucible with metal are placed into a closed retort volume, heated in a vacuum in metal vapours, exposed at the maximal temperature of the metal carbidisation and cooled. The workpiece heating and isothermal exposure at a temperature higher than the evaporation temperature but lower than the maximal temperature of metal carbidisation is carried out at a difference of temperatures between the vapours of metal and the metallated workpiece with the lower temperature on the latter, following heating and isothermal exposure at the maximal temperature of the metal carbidisation - in the absence of the temperature difference, and cooling - with a reverse difference of temperatures or in the absence of the metal vapours The less metal is to be introduced into the pores of the workpiece material, the lower temperature is set on the workpiece and/or the lower difference of temperatures is created between the workpiece and the metal vapours and/or the less time is set on isothermal exposure, and on the contrary.

EFFECT: increased strength and oxidation stability of the composite materials.

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