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Mechanical, tribological and electrical properties of Cu-CNT composites fabricated by flake powder metallurgy method

Title
Mechanical, tribological and electrical properties of Cu-CNT composites fabricated by flake powder metallurgy method
Authors
Akbarpour, M.R.Alipour, S.Farvizi, M.Kim, H.S.
Date Issued
May-2019
Publisher
ELSEVIER URBAN & PARTNER SP Z O O
Abstract
Cu-CNT composites were fabricated by a flake powder metallurgy method, and their microhardness, electrical conductivity, frictional and wear properties were investigated. Homogenous distribution of CNTs in fine-grained Cu matrix was obtained using this process. Microhardness increased with the addition of CNT vol% up to 8% to the Cu matrix, while the conductivity decreased to 79.2 IACS %. Results showed that CNTs play a major role in improving wear resistance by forming a CNT-rich film that acts as a solid lubricant layer. In the synthesized composites, Cu-4 vol% CNT composite exhibited the best wear and friction properties. The dominant wear mechanisms for the Cu-CNT composites were plastic deformation, abrasion, and flake formation-spalling. Also, a newly modified correlation was proposed for the theoretical calculation of the friction coefficient of Cu-CNT composites consisting agglomerated CNTs. (C) 2019 Politechnika Wroclawska. Published by Elsevier B.V. All rights reserved.
Keywords
CARBON NANOTUBES; WEAR BEHAVIOR; FRICTION; COPPER; MICROSTRUCTURE; NANOCOMPOSITES; DISPERSION; EVOLUTION; STRENGTH; GRAPHENE
URI
http://oasis.postech.ac.kr/handle/2014.oak/95240
ISSN
1644-9665
Article Type
Article
Citation
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING, vol. 19, no. 3, page. 694 - 706, 2019-05
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 KIM, HYOUNG SEOP
Dept of Materials Science & Enginrg
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