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Heteroepitaxy: The Missing Link Between Surface Chemistry and Dry Corrosion

Published online by Cambridge University Press:  10 February 2011

Judith C. Yang ,
Mridula Dixit Bharadwaj  and
Lori Tropia
Judith C. Yang
Affiliation:
Materials Science & Engineering, University of Pittsburgh, Pittsburgh PA 15261, USA
Mridula Dixit Bharadwaj
Affiliation:
Materials Science & Engineering, University of Pittsburgh, Pittsburgh PA 15261, USA
Lori Tropia
Affiliation:
Materials Science & Engineering, University of Pittsburgh, Pittsburgh PA 15261, USA
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Abstract

We have investigated the initial stages of Cu (001) oxidation in dry and moist oxidizing conditions using in situ ultra-high vacuum (UIHV) transmission electron microscopy (TEM). To investigate the role of moisture in the solid state reactions in Cu oxidation, we have examined the oxidation of Cu (001) with water vapor. Our observation indicate that water vapor causes reduction of Cu2O and retards the oxidation rate if both oxygen gas and water vapor are used simultaneously which contradicts the thermochemical data. We are also modeling the nucleation to coalescence of the oxide scale using the Johnson-Mehl-Avrami-Kolmogorov (JMAK) equation and have noted a qualitative agreement.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 619: Symposium L – Recent Developments in Oxide & Metal Epitaxy – Theory… , 2000 , 63
Copyright
Copyright © Materials Research Society 2000

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References

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