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Electrochemical Atomic Force Microscopy Study of the Dissolution Kinetics of 304 Stainless Steel

Published online by Cambridge University Press:  10 February 2011

T. J. Mckrell  and
J. M. Galligan
T. J. Mckrell
Affiliation:
Department of Metallurgy and Materials Engineering, University of Connecticut, Storrs, Connecticut, 06269–3136
J. M. Galligan
Affiliation:
Department of Metallurgy and Materials Engineering, University of Connecticut, Storrs, Connecticut, 06269–3136
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Abstract

An electrochemical atomic force microscope (ECAFM) has been employed to observe, in situ, the topographical and electrical changes that occur on 304 stainless steel as a function of an electrical potential. The concurrent acquisition of a polarization curve and topographical data allows direct correlation of variations in the surface roughness with the electrochemical characteristics of the passivation process. Also, the large AFM scan size, employed in this study, allows for the delineation and determination of the interdependence of the surface kinetics at various regions of the surface. Simultaneous measurements of topographical and electrical changes at these regions have established a correspondence of the competing kinetics between the reactions of dissolution and passivation. This provides a way to relate chemical surface reactions to surface topography.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 451: Symposium P – Electrochemical Synthesis and Modification , 1996 , 549
Copyright
Copyright © Materials Research Society 1997

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References

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