The study elucidates the influence of three nitrogen-rich explosives viz., FOX-7, FOX-12, and RS-RDX on the performance of B/KNO 3 /PEC igniter composition. The B/ KNO 3 pyrotechnic igniter compositions with 5, 10 & 15 parts of FOX-7, FOX-12, and RS-RDX were successfully prepared. The compositions were evaluated in terms of surface morphology, heat output, sensitivities, flame temperature, pressure output, ignition delay, time to reach P max (BTP max ), and thermal analysis. The closed vessel firing data indicated higher P max value and lower BTP max for FOX-12 and FOX-7 based composition. The addition of FOX-12 and FOX-7 also reduces the decomposition temperature of B/KNO 3 composition without affecting friction and spark sensitivities. The composition having 15 parts RSRDX is the most insensitive to impact among all. Therefore, the addition of insensitive high explosives like RS-RDX, FOX-7and FOX-12 is useful to improve the performance of the igniter composition to achieve low BTP max and increased pressure output. Optimum performance is exhibited by RS-RDX-based compositions.

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