Самораспространяющийся высокотемпературный синтез металлоуглеродных наноматериалов

Abstract

Processes of self-propagating high-temperature synthesis (SHS) of metal-carbon nanomaterials in a combustion wave initiated by a pulse discharge current are realized. Exothermic systems for SHS of metallocarbon nanomaterials are chosen. Powder mixture "aluminum + titanium + polytetrafluoroethylene" is proposed to use for SHS of titanium carbide via series of conjugated exothermic reactions. It is shown that nanostructured titanium carbide powder with nanocrystallites’ size of 35 nm is formed as a result of combustion of the mixture. Carbon nanomaterial powders which were synthesized by the electrodischarge processing of hydrocarbons are used to synthesize carbides of tungsten and titanium in the "tungsten + titanium + carbon" system with nanocrystallites’ size of 48.8 nm for TiC, 46 nm for W2C and 20.7 nm for WC.