A novel approach to prepare aluminium-alloy foams reinforced by carbon-nanotubes
authors Duarte, I; Ventura, E; Olhero, S; Ferreira, JMF
nationality International
journal MATERIALS LETTERS
author keywords Aluminium foams; Carbon nanotubes; Reinforced closed-cell foams; Nanocomposite metal foams; Colloidal processing; Powder metallurgy
keywords MECHANICAL-PROPERTIES; MATRIX COMPOSITES
abstract This paper presents an innovative approach to prepare a new class of closed-cell reinforced (nanocomposite) metal-foams that synergistically explores the remarkable properties of both metal-foams and carbon-nanotubes. This approach combines colloidal-processing (including freeze-granulation-lyophilisation) and powder technology, ensuring the retention of the tubular-structure of -COOH-functionalised multiwall carbon nanotubes (MWCNTs-COOH) and their uniform distribution in the metal-matrix. The microstructural analysis revealed non-agglomerated, well-dispersed, stretched and directionally-aligned MWCNTs within the AI-matrix of the foams. These conditions potentiate the reinforcing role of MWCNTs with Vickers microhardness increments > 100%. (C) 2015 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0167-577X
year published 2015
volume 160
beginning page 162
ending page 166
digital object identifier (doi) 10.1016/j.matlet.2015.07.115
web of science category Materials Science, Multidisciplinary; Physics, Applied
subject category Materials Science; Physics
unique article identifier WOS:000364880300043
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journal analysis (jcr 2017):
journal impact factor 2.687
5 year journal impact factor 2.452
category normalized journal impact factor percentile 68.173
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