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Application of Coatings for Electromagnetic Gun Technology

Published online by Cambridge University Press:  22 February 2011

M. A. Otooni ,
A. Graf ,
G. Colombo ,
J. Conrad ,
K. Sridharan ,
M. M. Shamim ,
R. P. Fetherston  and
A. Chen
M. A. Otooni
Affiliation:
US army armament research, development and engineering center, Picatinny Arsenal, NJ
A. Graf
Affiliation:
US army armament research, development and engineering center, Picatinny Arsenal, NJ
G. Colombo
Affiliation:
US army armament research, development and engineering center, Picatinny Arsenal, NJ
J. Conrad
Affiliation:
University of Wisconsin, 1500 Johnson drive, Madison, WI
K. Sridharan
Affiliation:
University of Wisconsin, 1500 Johnson drive, Madison, WI
M. M. Shamim
Affiliation:
University of Wisconsin, 1500 Johnson drive, Madison, WI
R. P. Fetherston
Affiliation:
University of Wisconsin, 1500 Johnson drive, Madison, WI
A. Chen
Affiliation:
University of Wisconsin, 1500 Johnson drive, Madison, WI
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Abstract

Copper and aluminum are extensively used in various parts of the Electromagnetic (EM) Gun systems. Copper is used in the design of the railgun because it has favorable electrical and thermal properties. Aluminum is used for armature and sabot fabrication because of it is light weight and has favorable thermal properties. Extensive degradation of the copper rail and aluminum armature occurs owing to the severe heating and thermomechanical deformation of these components during operation of the EM gun. In this research effort, several modification techniques were used to protect the rail and armature materials from these degradation processes. These include application of Plasma Source Ion Implantation (PSII) and Ion Beam Enhanced Deposition (IBED) . By using these techniques, the copper rails and aluminum armatures were coated with TiN and TaN. Several characterization techniques were used to assess the chemical,mechanical and other properties of these modified surfaces. Optical Microscopy, Scanning and Transmission Electron Microscopy, and Scanning Auger Spectroscopy techniques were also used. Microhardness measurements have also been performed. From the results of this preliminary investigation, it has been concluded that the surface properties of the coated rail and armature materials have been improved and the extent of wear and spark erosion from these surfaces has been reduced.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 316: Symposium A – Materials Synthesis and Processing Using Ion Beams , 1993 , 577
Copyright
Copyright © Materials Research Society 1994

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References

REFERENCES

1 Persad, C., Lund, C. J., and Eliezer, Z., IEEE TRANS ON MAGNETICS, 25, 433 (1989)Google Scholar
2 Price, J. et al. Proc. 4th EML Conf., Austin TX, (1988)Google Scholar
3 Muller, D. E., Walter, K. C., Sridharan, K., Conrad, J. R., and Agarwal, S., JMEPEG 1 (4), 489 (1992)Google Scholar
4 Chen, A., Qiu, X., Conrad, J., Dodd, R. A., and Worzala, F., J. Mater, Eng. 12, 299 (1990)Google Scholar
5 Aao, H. Lu, An. and Conrad, H., Appl. Phys. Lett 59 (15) 1847 (1991)Google Scholar
6 Sridharan, K., Conrad, J., Worzala, F., and Dodd, R. A., Mater. Sci. and Eng. A128, 259 (1990)Google Scholar