Verfahren zur Herstellung nichtstoechiometrischer Carbide definierter Zusammensetzung

Production of non-stoichiometric group 4b and 5b metal carbides: MeCy, the reaction progress being controlled by a multi-stage temperature regime in which the heating rate is not less than 1 K/min. Also claimed are: (i) non-stoichiometric group 4b and 5b metal carbides MeCy and (ii) non-stoichiometric titanium carbides TiCy, obtained by the above method and having an oxygen content of not less than 0.3 wt.%, a free carbon content of not less than 0.2 wt.% and a stoichiometry coefficient y with a precision of plus or minus 1%. USE - In various composite materials such as cemented carbides. ADVANTAGE - The method controls the solid state reaction between metal powder and carbon to provide a stoichiometry coefficient deviation within plus or minus 1%, the carbide product having a smaller reflection half-height width in x-ray diffraction, after separation of the alpha 2 portion, than that of carbides of the same composition, but produced using other methods.