Abstract

ABSTRACT With the deepening of research, boron compounds have gradually gained favor among researchers due to their high calorific value and excellent ignition and combustion performance. In this paper, MgB2@KNO3, which exhibits excellent ignition and combustion properties, was synthesized using ultrasonic dispersion and magnetic stirring. The improved ignition mechanism and energy release characteristics of MgB2@KNO3 were elucidated using DSC/TG, SEM, EDS, XRD, and optical characterization, in conjunction with computational results from NASA-CEA. The surface activation energy and ignition energy of MgB2@KNO3 are 35.7% and 25%, respectively, lower than those of conventional B/KNO3 mixtures. Compared to the mixed sample of B/KNO3, the heat release of MgB2@KNO3 increased by 72.4%. The synergistic and effective interactions between oxygen, magnesium vapor, and boron in MgB2@KNO3 systems result in efficient energy release performance, making MgB2@KNO3 a promising material for use as a high-energy fuel in propellants, explosives, and pyrotechnic products.

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