Reaction dynamics in the combustion synthesis system of Al-CrO3-Al2O3-NaF-N2-O2

Dazheng Yang; Yue Zhang; Degang Li; Dianwei Qi; Wei Deng; Dayong Xun

doi:10.1016/S1005-8850(07)60050-4

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Dazheng Yang, Yue Zhang, Degang Li, Dianwei Qi, Wei Deng, and Dayong Xun, Reaction dynamics in the combustion synthesis system of Al-CrO₃-Al₂O₃-NaF-N₂-O₂, J. Univ. Sci. Technol. Beijing , 14(2007), No. 3, pp.261-265. https://dx.doi.org/10.1016/S1005-8850(07)60050-4

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Reaction dynamics in the combustion synthesis system of Al-CrO₃-Al₂O₃-NaF-N₂-O₂

摘要: A new material with heat-resistant and adiabatic characteristics and high strength was prepared using the combustion synthesis method by mixed powders of CrO₃, Al, Al₂O₃, and NaF in atmospheric gas. The reaction dynamic process of the Al-CrO₃-NaF-Al₂O₃-N₂-O₂ new material system by the combustion synthesis method was discussed based on the observation results by SEM, EDS, and XRD in combination with the combustion front quenching method (CFQM) and the relation curves between reaction free enthalpies and the corresponding temperatures. The combustion synthesis mechanism and the formation reasons of the phase in the combustion product were analyzed.

Reaction dynamics in the combustion synthesis system of Al-CrO₃-Al₂O₃-NaF-N₂-O₂

Abstract: A new material with heat-resistant and adiabatic characteristics and high strength was prepared using the combustion synthesis method by mixed powders of CrO₃, Al, Al₂O₃, and NaF in atmospheric gas. The reaction dynamic process of the Al-CrO₃-NaF-Al₂O₃-N₂-O₂ new material system by the combustion synthesis method was discussed based on the observation results by SEM, EDS, and XRD in combination with the combustion front quenching method (CFQM) and the relation curves between reaction free enthalpies and the corresponding temperatures. The combustion synthesis mechanism and the formation reasons of the phase in the combustion product were analyzed.

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