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Permanent link (DOI): https://doi.org/10.7939/R3ZH3V

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Fabrication and properties of aluminum-carbon nanotube accumulative roll bonded composites Open Access

Descriptions

Other title
Subject/Keyword
Metal matrix composites
Accumulative roll bonding
Carbon nanotubes
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Salimi, Sahar
Supervisor and department
Gerlich, Adrian (Chemical and Materials Engineering)
Examining committee member and department
Mendez, Patricio (Chemical and Materials Engineering)
Gerlich, Adrian (Chemical and Materials Engineering)
Lubell, Adam (Civil and Environmental Engineering)
Department
Department of Chemical and Materials Engineering
Specialization

Date accepted
2011-04-14T16:29:43Z
Graduation date
2011-06
Degree
Master of Science
Degree level
Master's
Abstract
Accumulative roll bonding was adapted to fabricate a carbon nanotube reinforced aluminum matrix composite. The microstructure was investigated by transmission electron microscopy, and it was confirmed that the nanotubes were embedded into the metal matrix while maintaining their multiwalled structure. Measurements revealed that the as-received carbon nanotubes had a bimodal diameter size distribution, while only nanotubes with diameters >30 nm and more than 30 walls were retained during four consecutive rolling operations at 50% reduction. The elastic deflection and vibration damping properties of the laminated composite were investigated by cantilever bending test and by impulse excitation method in samples with different concentrations of carbon nanotubes. Measurements by both methods revealed that a 0.23wt% concentration of nanotubes increased the elastic modulus according to the rule of mixtures and the damping behavior of the composites increased by the addition of nanotubes up to 0.1wt%.
Language
English
DOI
doi:10.7939/R3ZH3V
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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