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Corrosion of Copper Nuclear Waste Containers In Aqueous Sulphide Solutions

Published online by Cambridge University Press:  17 March 2011

J. Smith ,
Z. Qin ,
D.W. Shoesmitha ,
F. King  and
L. Werme
J. Smith
Affiliation:
Department of Chemistry, The University of Western Ontario, London, ON, Canada, N6A 5B7.
Z. Qin
Affiliation:
Department of Chemistry, The University of Western Ontario, London, ON, Canada, N6A 5B7.
F. King
Affiliation:
Integrity Corrosion Consulting Ltd., 6732 Silverview Drive NW, Calgary, Alberta, Canada, T3B 3K8.
L. Werme
Affiliation:
SKB Swedish Nuclear Fuel and Waste Management Co. Stockholm, Sweden, Box 5864, SE-102 40.
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Abstract

Electrochemical and surface analytical techniques are being used to determine the mechanismand kinetics of Cu corrosion in the presence of sulphide, with the primary goal of developing a mixed potential model for Cu corrosion under disposal conditions. Corrosion potential (Ecorr) measurements indicate the formation of copper sulphide films is rapid leading to rate control by the cathodic reduction of water. Impedance spectroscopy suggests the anodic charge transfer process is rapid leading to film growth limited by diffusive transport. Experiments are underway to determine the current-potential relationships necessary in the development of a mixed potential model.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 824: Symposium CC – Scientific Basis for Nuclear Waste Management XXVIII , 2004 , CC1.12
Copyright
Copyright © Materials Research Society 2004

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References

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