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http://dx.doi.org/10.6108/KSPE.2022.26.4.028

Key Factors that can Affect the Chemical Reaction Kinetics of Aged Metals/KClO4-based Energetic Materials  

Oh, Juyoung (School of Aerospace Engineering, Seoul National University)
Yoh, Jai-ick (School of Aerospace Engineering, Seoul National University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.26, no.4, 2022 , pp. 28-43 More about this Journal
Abstract
To minimize such loss due to aging, research on energetic materials is being actively conducted though, there are difficulties in identifying the comprehensive aging mechanisms as they focused on the respective materials. In this study, thermal and surface analysis were performed on energetic materials composed of metals(W, Ti, and Zr) and KClO4 oxidizer to solve the blind spots of this aging study. It was newly found that the metals in the hygrothermally aged compounds can cause significant changes in performance. For example, the growth in the thickness of the oxide film on the metals led to an increase in the average value of activation energy(Eα). In addition, the standard deviation of Eα tends to dependent on the type of metal, which is due to the difference in electronegativity.
Keywords
Pyrotechnics; Hygrothermal Aging; Thermal Analysis; Accelerated Aging; Thermodynamic Characteristics;
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