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Repassivation Potentials for Long-Term Life Prediction of Localized Corrosion

Published online by Cambridge University Press:  01 January 1992

Narasi Sridhar  and
Gustavo Cragnolino
Narasi Sridhar
Affiliation:
Center for Nuclear Waste Regulatory Analyses, 6220 Culebra Road San Antonio, TX 78228
Gustavo Cragnolino
Affiliation:
Center for Nuclear Waste Regulatory Analyses, 6220 Culebra Road San Antonio, TX 78228
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Abstract

The effect of pit growth on repassivation potentials (Erp) of type 316L stainless steel (SS) and alloy 825 is investigated using a decreasing potential staircase technique. The Erp decreases initially with increasing pit depth and then attains a value which is relatively independent of pit depth. The Erp also decreases with increasing potential scan rate because of the decreasing time for repassivation with decreasing potential. The Erp, is explained in terms of the effect of applied potential on changes in solution composition inside growing pits and its use is recommended as a bounding parameter for long-term prediction of localized corrosion.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 294: Symposium V – Scientific Basis for Nuclear Waste Management XVI , 1992 , 649
Copyright
Copyright © Materials Research Society 1993

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References

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