Abstract
Thermite reactions in the NiO-Al system have been studied. In addition to the case when the stoichiometry is set up to produce metallic nickel and alumina, we studied the case when Al is added in excess in order to react with the Ni produced through the reduction of nickel monoxide with Al to produce various nickel aluminides. As thermite reactions are highly exothermic, in order to provide a better understanding of the reactions, alumina has been added to the green mixture to reduce the reaction rate and overall exothermicity, in amounts corresponding up to 50% of the overall heat capacity of the sample.
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Vrel, D., Langlois, P., Heian, E.M., Karnatak, N., Dubois, S., and Beaufort, M.-F., Reaction Kinetics and Phase Segregation in the 3NiO + 2Al → 3Ni + Al2O3 Thermite System, Int. J. SHS, 2003, vol. 12, no. 4, pp. 261–270.
Vrel, D., Girodon-Boulandet, N., Paris, S., Mazué, J.-F., Couqueberg E., Gailhanou, M., Thiaudiére, D., Gaffet, E., and Bernard, F., A New Experimental Setup for the Time-Resolved X-Ray Diffraction Study of Self-Propagating High-Temperature Synthesis, Rev. Sci. Instr., 2003, vol. 73, no. 2, pp. 422–428.
Bernard, F., Paris, S., Vrel, D., Gailhanou, M., Gachon, J.-C., and Gaffet, E., Time-Resolved XRD Experiments Adapted to SHS Reactions: Past and Future, Int. J. SHS, 2002, vol. 12, no. 2, pp. 181–190.
Marin-Ayral, R.-M., Dumez, M.-C., and Tedenac, J.-C., Influence of High Gas Pressure on Combustion Synthesis of NiAl, Mater. Res. Bull., 2000, vol. 35, no. 2, pp. 233–243.
Fan, Q.C., Chai, H.F., and Jin, Z.H., Dissolution-Precipitation Mechanism of Self-Propagating High-Temperature Synthesis of Mononickel Aluminide, Intermetallics, 2001, vol. 9, no. 7, pp. 609–619.
Biswas, A., Roy, S.K., Gurumurthy, K.R., Prabhu, N., and Banerjee, S.A., Study of Self-Propagating High-Temperature Synthesis of NiAl in Thermal Explosion Mode, Acta Mater., 2002, vol. 50, no. 4, pp. 757–773.
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Vrel, D., Hendaoui, A., Langlois, P. et al. SHS reactions in the NiO-Al system: Influence of stoichiometry. Int. J Self-Propag. High-Temp. Synth. 16, 62–69 (2007). https://doi.org/10.3103/S1061386207020021
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DOI: https://doi.org/10.3103/S1061386207020021