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Ion Beam Mixing of Au-Ti

Published online by Cambridge University Press:  25 February 2011

E. L. Fleischer ,
J. W. Mayer  and
J-P. Hirvonen
E. L. Fleischer
Affiliation:
Materials Science and Engineering, Cornell University, Ithaca, NY 14853
J. W. Mayer
Affiliation:
Materials Science and Engineering, Cornell University, Ithaca, NY 14853
J-P. Hirvonen
Affiliation:
Department of Physics, University of Helsinki, Helsinki, Finland
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Abstract

Multi-layered films of Ti-Au of linearly varying composition were produced by ion irradiation using 600 KeV Ar++ ions. Rutherford Backscattering Spectrometry showed that mixing was complete. The microstructure observed by transmission electron microscopy consisted of a combination of crystalline and amorphous phases at the Ti-rich end and of a crystalline fcc Au solid solution at the Au-rich end. Corrosion testing in a simple immersion cell revealed remarkable corrosion resistance of the ion beam mixed sample compared to that of pure titanium or as-deposited Ti-Au samples (from 100%Au to 60%Ti-40%Au). Wear and friction testing was performed using a reciprocal sliding apparatus with a polytetrafluoroethylene (PTFE) pin. A composition of 60%Ti-40%Au was chosen as optimal for improved corrosion resistance without appreciable degradation in wear and friction properties.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 93: Symposium C – Materials Modification and Growth Using Ion Beams , 1987 , 227
Copyright
Copyright © Materials Research Society 1987

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References

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