Optimization of Aluminum Boride Synthesis in the Self-Propagating High-Temperature Synthesis Mode to Create Waste-Free Technology

Abstract

This paper is the continuation of our previous paper. In this work, we optimized the synthesis of aluminum borides by the SHS method. The purpose of the research was to develop the foundations of waste-free technology. The initial components were powders of boric anhydride (B2O3), aluminum (Al), the oxide-heating additive (KNO3), various fluxing additives, including mixed ones. The optimal ratios of the initial components for increasing the yield of aluminum boride with a high boron content and obtaining slag suitable for the production of high-alumina clinkers were determined. Studies have shown that the development of a waste-free technology for producing aluminum borides by the method of self-propagating high-temperature synthesis (SHS) is possible and yields target (alloy) and by-product (slag) products that meet the requirements for chemical and phase composition.

Investigation of the Effect of Aluminum Powder on the Combustion Rate of the Composite

“…), as well as their hydrides. Metal fuel in its pure form cannot be a source of reactive energy, but if it is mixed with an oxidizing fuel, then the heat generated during the combustion of the metal fuel significantly increases the temperature of the resulting gas and, consequently, its outflow rate increases, which increases the specific jet thrust [1,2].…”