Publication: Ti2AlC and Ti3SiC2 MAX phase foams: processing, porosity characterization and connection between processing parameters and porosity
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Publication date
2016
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Tutors
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Publisher
European Powder Metallurgy Association (EPMA)
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Abstract
MAX phases Ti2AlC and Ti3SiC2 foams with controlled porosity and pore size were produced using the space holder method. The foams were processed using water-leachable crystalline carbohydrate as space holder that involves: mixing, cold isostatic pressing, dissolution and sintering. Three combinations of volume percentage (20%-60%) and size distribution (250-1000 mum) of space holder were introduced during mixing. The foams were characterized and compared with the material without space holder. The characterization included: morphology (overall, open and closed porosity by Archimedes method) and gas permeability. Foams with porosity up to about 60 vol% and pore size distribution ranging from about 250 to 1000 mum were produced. Experimental porosity was compared to the theoretical expected porosity. The results show a bimodal porosity that can be customized by the sintering and the space holder. This study connects the processing parameters to the porosity created and allows control of porosity and pore size to produce tailor-made properties.
Description
Proceeding of: World PM2016 Congress Proceedings. New materials and applications, biomedical applications
Keywords
Max phases, Ti2alc, Ti3sic2, Porous materials, Eco-friendly processing, Water-soluble space holder, Permeability
Bibliographic citation
World PM2016 Congress Proceedings. New materials and applications, biomedical applications, 6 pp.