METHOD FOR OBTAINING HIGHLY-DISPERSIBLE REFRACTORY CARBIDES FOR COATING AND COMPOSITES BASED THEREON Russian patent published in 2008 - IPC C01B31/30 C01B31/34 

FIELD: chemistry.

SUBSTANCE: invention relates to obtaining highly-dispersible refractory carbides including mixed ones, coating and composites on their basis at comparatively low temperatures. Organic solutions of metal-containing complex compounds with polymers are subjected to monitored hydrolysis according to method of sol-gel technology. Obtained gel is dried in steps at temperatures of 20-250°C, then subjected to pyrolysis at 350-600°C in inert or reduction atmosphere or at lower pressure with following carbo-thermal synthesis in temperature range 600-1200°C and with pressure of 10^-1-10⁴ Pa. Claimed method is characterised by lower synthesis temperature and high dispersibility of particles of obtained product, possibility to obtain coating with controlled density on articles of complex form and refractory carbides of higher purity.

EFFECT: obtaining possibility to create coating with controlled density on articles of complex form and refractory carbides of higher purity at lower temperature of synthesis and high dispersibility of obtained product particles.

2 dwg, 5 ex