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The Regularities of Selective Oxidation of Copper-Aluminium Solid Solutions.

Published online by Cambridge University Press:  25 February 2011

A. G. Akimov  and
N. A. Melnikova
A. G. Akimov
Affiliation:
Institute of Physical Chemistry, Russian Academy of Sciences, Lenlnsky pr.31, Moscow, Russia.
N. A. Melnikova
Affiliation:
Institute of Physical Chemistry, Russian Academy of Sciences, Lenlnsky pr.31, Moscow, Russia.
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Abstract

The regularities of selective oxidation of copper solid solutions with 2–12 at.% aluminium have been studied by TEM, XPS and AES in combination with argon ion sputtering. It has been obtained that the increase of the aluminium concentrations in the solid solutions leads to the change of the oxidation mechanism. The internal oxidation of aluminium in Cu+(2–4at.%)Al results in the formation of the microincluslons of Al2O3 In the alloy. It has been demonstrated that the selective oxidation of aluminium in Cu+(12 at.%)Al results in the formation of uniform thin (<10 nm) aluminium oxide at the alloy surface. The kinetics of this alloy oxidation obeys the parabolic law.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 280: Symposium B – Evolution of Surface and Thin Film Microstructure , 1992 , 565
Copyright
Copyright © Materials Research Society 1993

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References

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