Tantalum silicides: Ta₃Si (T_m = 2613 К) , Ta₂Si (T_m = 2783 К), Ta₅Si₃ (T_m = 2833 К) and TaSi₂ (T_m = 2313 К) belong to refractory compounds. In the series of refractory compounds, silicides are distinguished by a high chemical stability at high temperatures; therefore, they widely used as protective materials in the chemical industry. Thanks to semiconductor properties and thermal stability, tantalum silicides promise much as a substitute for silicon in microcircuits.

Based on thermodynamic calculation and voltammetric studies, it has been concluded that the synthesis of tantalum silicides is the most electropositive process in the NaCl-KCl-K₂SiF₆-K₂TaF₇ melts.

Only the compound Ta₂Si as coatings or powders has been obtained by electrosynthesis of the NaCl-KCl-K₂SiF₆-K₂TaF₇ melt at 973 K.