A new class of closed-cell aluminium foams reinforced with carbon nanotubes
authors Duarte, I; Ventura, E; Olhero, S; Ferreira, JMF
nationality International
journal CIENCIA & TECNOLOGIA DOS MATERIAIS
author keywords reinforced aluminium foams; carbon nanotubes; freeze-granulation; powder metallurgy
keywords METAL-MATRIX COMPOSITES; COMPRESSIVE PROPERTIES; BENDING BEHAVIOR; ALLOY FOAMS; TUBES; ADDITIONS; STRENGTH
abstract This manuscript reports on the fabrication of closed-cell aluminium alloy foams reinforced with carbon nanotubes (CNTs) through a novel approach that combines the powder metallurgy method with colloidal processing step that grants uniform dispersion of CNTs into the aqueous suspension of all powder components. Spraying the as prepared suspension into liquid nitrogen followed by lyophilisation enables obtaining homogeneous spherical granules to be used in the powder metallurgy method. Besides ensuring good dispersion of all powder components in the system, the non-agglomerated form of CNTs and the expansion upon foaming foster their structural integrity under stretched conditions in the final foams for an efficient load transfer. (C) 2016 Portuguese Society of Materials (SPM). Published by Elsevier Espana, S.L.U. All rights reserved.
publisher ELSEVIER ESPANA S I
issn 0870-8312
year published 2016
volume 28
issue 1
beginning page 5
ending page 8
digital object identifier (doi) 10.1016/j.ctmat.2016.06.003
web of science category Materials Science, Multidisciplinary
subject category Materials Science
unique article identifier WOS:000412093500002
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