Understanding the reactivity of magnesium powder subjected to various aging conditions

Lee, Yejun; Oh, Juyoung; Yoh, Jack J.

doi:10.1016/j.jece.2022.108535

Journal of Environmental Chemical Engineering

2022

DOI: 10.1016/j.jece.2022.108535

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Understanding the reactivity of magnesium powder subjected to various aging conditions

Yejun Lee

Juyoung Oh²,

Jack J. Yoh³

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Cited by 6 publications

References 22 publications

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Effect of Hygrothermal Aging on the Decomposition Reactions of Magnesium/Teflon/Viton (MTV) Pyrotechnic

Gaunekar,

Ambekar

2024

Propellants Explo Pyrotec

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Magnesium/Teflon/Viton (MTV) pyrotechnic compositions are widely used in various applications. Magnesium is known to oxidize under elevated humidity and temperature conditions. Consequently, the performance of MTV pyrotechnics degrades as they age. Accurate characterization of the aging process is necessary for the prediction of storage life and performance of MTV pyrotechnics. This study investigates the hygrothermal aging of an MTV pyrotechnic mixture using accelerated aging, thermogravimetry (TG), differential scanning calorimetry (DSC), and differential thermal analysis (DTA). The kinetic parameters were obtained using the Friedman isoconversional method. Differential TG (DTG) curves were analyzed to identify the reaction steps occurring during the decomposition of pristine and aged MTV samples. Scanning electron microscope–electron‐dispersive spectroscopy (SEM–EDS) and Fourier transform infrared (FTIR) spectroscopy revealed changes in morphology and chemical composition. As expected, increased humidity caused significant degradation of the metallic fuel in the MTV pyrotechnic. Furthermore, the formation of unwanted compounds due to aging was clearly observed. The formation of these compounds, in addition to the depletion of the metallic fuel, was realized to be the cause of reduced the performance of aged MTV pyrotechnics.

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Effect of Hygrothermal Aging on the Decomposition Reactions of Magnesium/Teflon/Viton (MTV) Pyrotechnic

Gaunekar,

Ambekar

2024

Propellants Explo Pyrotec

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show abstract

Aging effects on Magnesium–Teflon–Viton related to magnesium hydroxide formation and the weakened bond of polytetrafluoroethylene

Lee,

Oh,

Yoh

2023

J Therm Anal Calorim

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Initial oxidation of low index Mg surfaces investigated by SCLS and DFT

Xing,

Fanetti,

Gardonio

et al. 2024

Applied Surface Science

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Understanding the reactivity of magnesium powder subjected to various aging conditions

Cited by 6 publications

References 22 publications

Effect of Hygrothermal Aging on the Decomposition Reactions of Magnesium/Teflon/Viton (MTV) Pyrotechnic

Effect of Hygrothermal Aging on the Decomposition Reactions of Magnesium/Teflon/Viton (MTV) Pyrotechnic

Aging effects on Magnesium–Teflon–Viton related to magnesium hydroxide formation and the weakened bond of polytetrafluoroethylene

Initial oxidation of low index Mg surfaces investigated by SCLS and DFT

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