Combustion of titanium oxide based thermite systems with a complex reducing agent and energy additive under the influence of overload

The laws and mechanism of combustion of $\mathrm{TiO}_2$ based termite systems with a complex reducing agent ($\mathrm{Al}$ and $\mathrm{Ca}$) under the influence of overload are revealed. The termite system includes a basic composition whose combustion products are target elements ($\mathrm{Ti}$, $\mathrm{Al}$, $\mathrm{Nb}$, and $\mathrm{Cr}$) and a high-energy additive ($\mathrm{CaO}_2$, $\mathrm{Al}$, and $\mathrm{Ca}$) for realizing a high combustion temperature. With the introduction of an energy additive, the system acquires the ability to burn, and the combustion products ($\mathrm{Ti}_x\mathrm{Al}_y$ and oxide solutions $\mathrm{Al}_2\mathrm{O}_3$ and $\mathrm{CaO}$) are capable of melting with a sufficient content of the additive. With an increase in the proportion of $\mathrm{Ca}$ in the base mixture composition, the burning rate drops, and the reduction completeness of the target oxides increases. With an optimal ratio of $\mathrm{Ca}$ and $\mathrm{Al}$ in the mixture, the yield of the target elements in an ingot is close to the calculated value.