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Electron Beam - Directed Vapor Deposition of Multifunctional Structures

Published online by Cambridge University Press:  21 March 2011

D. T. Queheillalt ,
Y. Katsumi  and
H. N. G. Wadley
D. T. Queheillalt
Affiliation:
University of Virginia, Department of Materials Science & Engineering, 116 Engineers Way Charlottesville, Virginia, U.S.A. 22904-4745, dougq@virginia.edu
Y. Katsumi
Affiliation:
University of Virginia, Department of Materials Science & Engineering, 116 Engineers Way Charlottesville, Virginia, U.S.A. 22904-4745
H. N. G. Wadley
Affiliation:
University of Virginia, Department of Materials Science & Engineering, 116 Engineers Way Charlottesville, Virginia, U.S.A. 22904-4745
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Abstract

Multifunctional structures are those that combine load bearing support in addition to supplemental functions such as actuation, electrochemical energy storage or thermal management. Electron beam - directed vapor deposition (EB- DVD) technology has been used for the deposition of templated cellular structures for micro heat-pipe structures and porous electrode coatings for rechargeable nickel - metal hydride cells. In addition to load bearing support, the tem- plated cellular structures exhibit enhanced thermal management characteristics and the electrochemical cells can be integrated into the load bearing supports of linear and truss based structures leading to their multifunctionality. Dur- ing EB-DVD, the electron beam evaporated vapor flux is encompassed by a rarefied transonic inert gas jet, entraining the vapor in a non-reactive gas flow and transporting it onto a polymer or metal template structure. Here, EB-DVD technology has been used to synthesize copper based templated cellular structures for thermal management systems and porous nickel coatings for the positive electrode of rechargeable nickel - metal hydride cells.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 672: Symposium O – Mechanisms of Surface and Microstructure Evolution in Deposited Films and Film Structures , 2001 , O5.6
Copyright
Copyright © Materials Research Society 2001

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References

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