Co<sub>x</sub>-CrNbWMoAlC cast high-temperature materials were prepared from mixtures containing Co<sub>3</sub>O<sub>4</sub>/Cr<sub>2</sub>O<sub>3</sub>/Nb<sub>2</sub>O<sub>5</sub>/WO<sub>3</sub>/MoO<sub>3</sub>/Al/C and additive of 5% Al<sub>2</sub>O<sub>3</sub> by centrifugal self-propagating high-temperature synthesis (SHS). As Co<sub>3</sub>O<sub>4</sub> + Al was added, the burning velocity grew by five times. CrNbWMoAlC alloy was shown to have a multiphase structure consisting of NbC, Cr<sub>23</sub>C<sub>6</sub>, and Cr<sub>0.53</sub>Mo<sub>0.14</sub>Al<sub>0.33</sub>. Introduction of Co<sub>3</sub>O<sub>4</sub> and Al was found to yield Co<sub>x</sub>-CrNbWMoAlC alloy with a dendritic structure containing Co and NbC phases as a basis.