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Vertically Aligned Carbon Nanotubes as the Sputter Resist in Space Propulsive Systems

Published online by Cambridge University Press:  01 February 2011

Yoke Khin Yap
Affiliation:
Department of Physics, Michigan Technological University, Houghton, MI 49931, USA.
Vijaya Kayastha
Affiliation:
Department of Physics, Michigan Technological University, Houghton, MI 49931, USA.
Jitendra Menda
Affiliation:
Department of Physics, Michigan Technological University, Houghton, MI 49931, USA.
Lakshman Kumar Vanga
Affiliation:
Department of Physics, Michigan Technological University, Houghton, MI 49931, USA.
Jiesheng Wang
Affiliation:
Department of Physics, Michigan Technological University, Houghton, MI 49931, USA.
Alex Kieckhafer
Affiliation:
Department of Mechanical Engineering-Engineering Mechanics, Michigan Technological University, Houghton, MI 49931, USA.
Dean Massey
Affiliation:
Department of Mechanical Engineering-Engineering Mechanics, Michigan Technological University, Houghton, MI 49931, USA.
Lyon B. King
Affiliation:
Department of Mechanical Engineering-Engineering Mechanics, Michigan Technological University, Houghton, MI 49931, USA.
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Abstract

Two-types of vertically aligned multi-walled carbon nanotubes (VA-MWNTs) are evaluated as the protective coatings against ion erosion in electric propulsion systems. A series of experiments have been conducted to understand the erosion rate and erosion mechanism of these VA-MWNTs. These experiments were carried out with Xe propellant at an ion current density of 5 mA/cm2. We found that the erosion rates of both types of VA-MWNTs were changing with time. Such a nonlinear erosion process is explained according to a possible erosion mechanism.

Type
Research Article
Copyright
Copyright © Materials Research Society 2005

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References

[1]. Haag, T., Patterson, M., Rawlin, V. and Soulas, G., 2001 International Electric Propulsion Conference, Paper No. IEPC-01–94.Google Scholar
[2]. Blandino, J. J., Goodwin, D. G. and Garner, C. E., Diamond & Relat. Mater. 9, 1992 (2000).Google Scholar
[3]. Kim, V., Kozlov, V., Semenov, A., and Shkarban, I., 2001 International Electric Propulsion Conference, Paper No. IEPC-01–073.Google Scholar
[4]. Meezan, N. B., Gascon, N., and Capelli, M., 2001 International Electric Propulsion Conference, Paper No. IEPC-01–39.Google Scholar
[5]. Yap, Y. K., Menda, J., Vanga, L. K., Kayastha, V., Wang, J., King, L. B., Dimovski, S., and Gogotsi, Y., Mat. Res. Soc. Symp. Proc. Vol. 821 (2004 Materials Research Society), paper 3.7 (2004).Google Scholar
[6]. Hirao, T., Ito, K., Furuta, H., Yap, Y. K., Ikuno, T., Honda, S., Mori, Y., Sasaki, T., and Oura, K., Jpn. J. Appl. Phys. 40, L631 (2001).CrossRefGoogle Scholar
[7]. Kayastha, V., Yap, Y. K., Dimovski, S., and Gogotsi, Y., Appl. Phys. Lett. 85, 3265 (2004).Google Scholar

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