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Role of interface tailoring by Cu coating carbon nanotubes to optimize Cu–W composites

Published online by Cambridge University Press:  21 December 2015

Pingan Chen
Affiliation:
The State Key Lab of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, China
Qiang Shen
Affiliation:
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei Province, China
Guoqiang Luo*
Affiliation:
The State Key Lab of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, China
Chuanbing Wang
Affiliation:
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei Province, China
Meijuan Li
Affiliation:
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei Province, China
Lianmeng Zhang
Affiliation:
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei Province, China
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

The effect of interface tailoring by Cu coating carbon nanotubes (CNTs) on the properties of CNTs enhanced copper–tungsten (CNT/Cu–W) composites is investigated. Thermal, electrical, and mechanical properties were measured, and interfacial thermal resistance between Cu and CNT was calculated according to the thermal conductivity curves. CNTs with interface tailoring showed superior dispersion state in the Cu–W composites. When the CNT contents were lower than 0.5 vol%, homogeneous dispersion CNTs and strong interfacial bond between CNTs and Cu had a positive effect on the physical properties of CNT/Cu–W composites. Such interface modification can effectively achieve thermal and electrical conduction, as well as transfer load between CNTs and Cu in the CNT/Cu–W composites. When the CNT contents were higher than 0.5 wt%, the CNT agglomerations became the dominant factor to decrease the physical properties of the composites.

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Articles
Copyright
Copyright © Materials Research Society 2015 

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Footnotes

Contributing Editor: Sanjay Mathur

References

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