Abstract
Porous FeAl was manufactured from ball milled Fe/Al elemental powders followed by medium temperature solid diffusion and high temperature sintering. Phase composition and porous structure were analyzed by XRD, SEM, Mercury Porosimeter and permeability test system. High temperature oxidation in air and high temperature sulfidation in SO2(3v%)+N2 at 600°C were carried out to investigate the behaviors of the porous FeAl, and the results were compared to 316L porous materials. The result showed that high sintering temperature hastened the transform of Fe2Al5 to FeAl intermatellic. The permeability of the porous FeAl increased and the most probable size decreased with sintering temperature. The porous FeAl had mass gains of 0.06% for air oxidation and 0.13% for sulphidation after 50 h at 600°C, compared with mass gains of 0.15% and 5.3% respectively of porous 316L stainless steel.
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