Amino Acids Aided Sintering for the Formation of Highly Porous FeAl Intermetallic Alloys.

ABSTRACT: Fabrication of metallic foams by sintering metal powders mixed with thermally degradable compounds is of interest for numerous applications. Compounds releasing gaseous nitrogen, minimizing interactions between the formed gases and metallic foam by diluting other combustion products, were applied. Cysteine and phenylalanine, were used as gas releasing agents during the sintering of elemental Fe and Al powders in order to obtain metallic foams. Characterization was carried out by optical microscopy with image analysis, scanning electron microscopy with energy dispersive spectroscopy, and gas permeability tests. Porosity of the foams was up to 42 ± 3% and 46 ± 2% for sintering conducted with 5 wt % cysteine and phenylalanine, respectively. Chemical analyses of the formed foams revealed that

SUBMITTER: Karczewski K 

PROVIDER: S-EPMC5551789 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature