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Strengthening mechanisms of multiwalled carbon nanotube-reinforced Cu nanocomposite coatings during kinetic spray consolidation

Published online by Cambridge University Press:  04 September 2012

Kicheol Kang ,
Gyuyeol Bae  and
Changhee Lee
Kicheol Kang
Affiliation:
Kinetic Spray Coating Laboratory (NRL), Division of Materials Science& Engineering, Hanyang University, Seongdong-gu, Seoul 133-791, Republic of Korea
Gyuyeol Bae
Affiliation:
Kinetic Spray Coating Laboratory (NRL), Division of Materials Science& Engineering, Hanyang University, Seongdong-gu, Seoul 133-791, Republic of Korea
Changhee Lee*
Affiliation:
Kinetic Spray Coating Laboratory (NRL), Division of Materials Science& Engineering, Hanyang University, Seongdong-gu, Seoul 133-791, Republic of Korea
*
a)Address all correspondence to this author. e-mail: chlee@hanyang.ac.kr
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Abstract

Multiwalled carbon nanotube (MWCNT)-reinforced copper (Cu) nanocomposite coatings were consolidated using kinetic spraying. Nanocomposite particles colliding with supersonic velocity led to severe plastic deformation and deposition and resulted in bimodal structural evolution by grain refinement and work hardening. These microstructural factors contributed to the remarkable strengthening of the nanocomposites in conjunction with Orowan looping of MWCNTs. In this study, the microstructural and physical metallurgical analyses were performed to understand the strengthening mechanisms of MWCNT/Cu nanocomposites consolidated by kinetic spraying.

Keywords

coatingcompositestrength

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Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 18 , 28 September 2012 , pp. 2375 - 2381
Copyright
Copyright © Materials Research Society 2012

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