Title
A quantitative method to characterize the <tex>$Al_{4}C_{3}$</tex>-formed interfacial reaction : the case study of MWCNT/Al composites A quantitative method to characterize the <tex>$Al_{4}C_{3}$</tex>-formed interfacial reaction : the case study of MWCNT/Al composites
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
New York ,
Subject
Physics
Engineering sciences. Technology
Source (journal)
Materials characterization. - New York
Volume/pages
112(2016) , p. 213-218
ISSN
1044-5803
ISI
000370109200026
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The Al4C3-formed interfacial reaction plays an important role in tuning the mechanical and thermal properties of carbon/aluminum (C/Al) composites reinforced with carbonaceous materials such as multi-wall carbon nanotube (MWCNT) and graphene nanosheet. In terms of the hydrolysis nature of Al4C3, an electrochemical dissolution method was developed to quantitatively characterize the extent of C/Al interfacial reaction, which involves dissolving the composite samples in alkaline solution first, then collecting and measuring the CH4 gas released by Al4C3 hydrolysis with a gas chromatograph. Through a case study with powder metallurgy fabricated 2.0 wt.% MWCNT/Al composites, the detectability limit of the proposed method is 0.4 wt.% Al4C3, corresponding to 5% extent of interfacial reaction with a measurement error of ± 3%. And then, with the already known MWCNT/Al reaction extent vs different sintering temperature and time, the reaction kinetics with an activation energy of 281 kJ mol− 1 was successfully derived. Therefore, this rapid, sensitive, accurate method supplies a useful tool to optimize the processing and properties of all kinds of C/Al composites via interface design/control.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/24a684/130066.pdf
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