Shape-formation in the processes of self-propagating high-temperature synthesis of foams

Self-propagating high-temperature synthesis of cylindrical specimens of foam cermet with a relatively large length $(l/D\gg1)$ is performed. A $\mathrm{Ti}+0.6\mathrm{C}$ mixture containing foaming agent $\mathrm{Na}_2\mathrm{B}_2\mathrm{O}_7\cdot 10\mathrm{H}_2\mathrm{O}$ was used. The initial compacts were enclosed in burning paper shells, which during self-propagating high-temperature synthesis made it possible to produce straight rods of foam ceramics, distinguished by an even surface. The dependence of the relative elongation of the specimens on the shell thickness was established. The possibility of controlling the shape of the foam SHS product by varying the slope of the combustion-front plane to the specimen axis was considered.