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Copper Corrosion in Aqueous Sulfide Solutions under Nuclear Waste Repository Conditions

Published online by Cambridge University Press:  28 March 2012

J. Chen ,
Z. Qin  and
D. W. Shoesmith
J. Chen
Affiliation:
Department of Chemistry, The University of Western Ontario London, Ontario, N6A 5B7, Canada
Z. Qin
Affiliation:
Department of Chemistry, The University of Western Ontario London, Ontario, N6A 5B7, Canada
D. W. Shoesmith
Affiliation:
Department of Chemistry, The University of Western Ontario London, Ontario, N6A 5B7, Canada
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Abstract

The corrosion behavior of oxygen-free copper in anoxic sulfide solutions under nuclear waste disposal conditions was studied using electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) equipped with a focused ion beam (FIB), X-ray photoelectron spectroscopy (XPS) and Micro X-ray diffraction (μXRD). The film growth process and mechanism were elucidated using an Au marker test, and the contribution of solution diffusion to corrosion was demonstrated in magnetically-stirred experiments. The effect of groundwater chemistry, particularly chloride content on copper corrosion and film properties was characterized using long-term corrosion experiments.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1475: Symposium NW – Scientific Basis for Nuclear Waste Management XXXV , 2012 , imrc11-1475-nw35-o16
Copyright
Copyright © Materials Research Society 2012

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References

REFERENCES

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