A Self-Propagating Foaming Process of Porous Al-Ni Intermetallics Assisted by Combustion Reactions

A Self-Propagating Foaming Process of Porous Al-Ni Intermetallics Assisted by Combustion Reactions

The self-propagating foaming process of porous Al-Ni intermetallics was investigated. Aluminum and nickel powders were blended, and titanium and boron carbide powders were added as reactive exothermic agents. The blended powder was extruded to make a rod-shape precursor. Only one end of the rod prec...

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Veröffentlicht in:Materials 2009-12, Vol.2 (4), p.2360-2368
Hauptverfasser: Kobashi, Makoto, Kanetake, Naoyuki
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Sprache:eng
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Aluminum
Explosions
Heat
Porosity
Temperature
Titanium
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description The self-propagating foaming process of porous Al-Ni intermetallics was investigated. Aluminum and nickel powders were blended, and titanium and boron carbide powders were added as reactive exothermic agents. The blended powder was extruded to make a rod-shape precursor. Only one end of the rod precursor was heated to ignite the reaction. The reaction propagated spontaneously throughout the precursor. Pore formation took place at the same time as the reaction occurred. Adding the exothermic agent was effective to increase the porosity. Preheating the precursor before the ignition was also very effective to produce porous Al-Ni intermetallics with high porosity.
doi_str_mv 10.3390/ma2042360
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subjects Aluminum
Explosions
Heat
Porosity
Temperature
Titanium
title A Self-Propagating Foaming Process of Porous Al-Ni Intermetallics Assisted by Combustion Reactions
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