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Conformal Coating of Metallic Shells on Carbon Nanotube Turfs

Published online by Cambridge University Press:  31 July 2018

Mohamad B. Zbib*
Affiliation:
School of Materials Engineering, Purdue University, West Lafayette, IN 47907, U.S.A. Department of Mechanical Engineering, Phoenicia University, District of Zahrani, Lebanon.
Matthew Howard
Affiliation:
School of Materials Engineering, Purdue University, West Lafayette, IN 47907, U.S.A. Department of Materials, Imperial College London, London, SW7 2AZ, U.K.
Michael R. Maughan
Affiliation:
School of Materials Engineering, Purdue University, West Lafayette, IN 47907, U.S.A. Department of Mechanical Engineering, University of Idaho, Moscow, ID 83844, U.S.A.
Nicolas J. Briot
Affiliation:
Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, U.S.A.
T. John Balk
Affiliation:
Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, U.S.A.
David F. Bahr
Affiliation:
School of Materials Engineering, Purdue University, West Lafayette, IN 47907, U.S.A.
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Abstract:

A synthesis method to form conformal core-shell foams of metals and alloys on a carbon nanotube (CNT) scaffold by electroplating from a single bath electrolyte is demonstrated in this work. A triple cyclic pulse electrodeposition technique was used to deposit Ni and Cu layers on the CNT scaffold, and electron microscopy was then used to identify conditions amenable to conformal and island growth morphologies. Nanoindentation of the resulting metallic foam structure, using a flat punch/compression geometry, demonstrates that adding conformal metallic shells to the CNT turf to create a metal coated low density foam increases both the hardness and elastic modulus; however, once island growth initiates there is no significant subsequent increase in mechanical properties with increases in deposited metals.

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Copyright © 2018 Materials Research Society

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Zbib et al. supplementary material 1

Zbib et al. supplementary material

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