METHOD OF OBTAINING NANO-SIZED TANTALUM CARBIDE BY THERMAL TRANSFORMATION OF PENTAKIS-(DIMETHYLAMINO)TANTALUM Russian patent published in 2015 - IPC C01G35/00 C01B31/30 B82B1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to obtaining nano-disperse high-melting tantalum carbide, used as filler of composite materials, ceramic thermal barrier coating, chemically stable material, material for high-temperature ceramic matrix composites, and can be used in field of chemical industry, aviation and space equipment. Method of obtaining nano-disperse high-melting tantalum carbide with formation of tantalum carbide microspheres, consisting of agglomerates of nanoparticles, consists in carrying out step-by-step thermal transformation of solution of pentakis-(dimethylamide)tantalum in tetradecane in inert atmosphere in interval of temperatures 25-250°C, realised by heating reaction mass to 160°C for an hour and from 160°C to 250°C for three hours, with obtaining tantalum-nitrogen-carbon-containing pre-ceramic polymer and its further thermal processing by heating to temperature 1100°C at rate 10°C/min with exposure in inert atmosphere for 3 hours.

EFFECT: reduction of process stages, simplicity of equipment design, possibility of obtaining larger batches of product, application of one component as source of tantalum and carbon.

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