Repassivation potentials for long-term life prediction of localized corrosion
Conference
·
OSTI ID:62252
- Center for Nuclear Waste Regulatory Analyses, San Antonio, TX (United States)
The effect of pit growth on repassivation potentials (e{sub rp}) of type 316L stainless steel (SS) and alloy 825 is investigated using a decreasing potential staircase technique. The E{sub rp} decreases initially with increasing pit depth and then attains a value which is relatively independent of pit depth. The E{sub rp} also decreases with increasing potential scan rate because of the decreasing time for repassivation with decreasing potential. The E{sub rp} 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.
- OSTI ID:
- 62252
- Report Number(s):
- CONF-921101--Vol.294; CNN: Contract NRC-02-88-005
- Country of Publication:
- United States
- Language:
- English
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