DOI: 10.5176/2251-1857_M370
Authors: Krzysztof Karczewski, Zbigniew Bojar, Michal Chojnacki and Stanislaw Józwiak
Abstract:
The influence of small additions of organic foaming agents on the SHS reaction in the Fe-Al system has been investigated in this work. Porous FeAl intermetallics were fabricated by the Self-propagating High-temperature Synthesis (SHS) from the mixtures of pure iron and aluminum elemental powders and organic compounds additives compacted into cylindrical pellets. In order to maintain shape of the final foam-like products experiments were conducted in the volume-controlled environmental reactor designed by the authors. Porous structures of FeAl intermetallics fabricated in the reactor were investigated using SEM and XRD analysis. The results explicitly indicate that it is possible to obtain porous intermetallic materials using organic foaming compounds and it was found that the type of additives have a significant effect on the final structure of porous FeAl sinters.
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