Effect of Al content on reaction laser sintering of Ni–Al powder

Laser reactive sintering, i.e., laser-induced self-propagating reaction sintering synthesis was used for the preparation of nickel aluminide intermetallic compounds. The experimental parameters controlling the ignition step such as ignition time and adiabatic temperature were obtained both by experi...

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Veröffentlicht in:Journal of alloys and compounds 2009-04, Vol.473 (1), p.227-230
Hauptverfasser: Qin, Linjing, Hu, Jiandong, Cui, Chengyun, Wang, Hongying, Guo, Zuoxing
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container_title Journal of alloys and compounds
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creator Qin, Linjing
Hu, Jiandong
Cui, Chengyun
Wang, Hongying
Guo, Zuoxing
description Laser reactive sintering, i.e., laser-induced self-propagating reaction sintering synthesis was used for the preparation of nickel aluminide intermetallic compounds. The experimental parameters controlling the ignition step such as ignition time and adiabatic temperature were obtained both by experiment and calculation as a function of initial stoichiometry. Al mole ratio in initial powder mixture was varied from 25% to 50% for controlling adiabatic temperature. The increase in Al powder content resulted in the rise in adiabatic temperature and the morphology change of nickel aluminide compounds from needle-like to blocky.
doi_str_mv 10.1016/j.jallcom.2008.05.039
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subjects Adiabatic temperature
Ignition time
Morphology
Nickel aluminide intermetallic compound
Reaction laser sintering
title Effect of Al content on reaction laser sintering of Ni–Al powder
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