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Diffusion markers in thin-film VA13, Co2Al9, CrAl7, MoAl12, and Ni3Al formation

Published online by Cambridge University Press:  29 June 2016

E.G. Colgan  and
J. W. Mayer
E.G. Colgan
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853
J. W. Mayer
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853
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Abstract

The dominant diffusing species in VA13, Co2Al9, CrAl7, and MoAl12 formation was determined. These are the initial phases to form in metal-Al reactions and the most Al-rich phases on the phase diagrams (except for VA13). It was found for the growth of VA13, Co2Al9, CrAl7, and MoAl12 that Al is the dominant moving species. This is very different from results with metal-Si marker experiments where either the metal or Si can be the dominant moving species in the initial phase. In aluminides the dominant moving species is related to the initial phase formed. For the growth of the Ni-rich phase, Ni3Al, Ni was the dominant moving species.

Type
Articles
Information
Journal of Materials Research , Volume 1 , Issue 6 , December 1986 , pp. 786 - 791
Copyright
Copyright © Materials Research Society 1986

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