Repassivation potentials for long-term life prediction of localized corrosion

Conference · Fri Dec 31 00:00:00 EST 1993

OSTI ID:62252

Sridhar, N; Cragnolino, G ^[1]

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1. 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; TRN: 95:002922-0069
• Resource Relation: Conference: 16. Materials Research Society (MRS) fall meeting, Boston, MA (United States), 30 Nov - 5 Dec 1992; Other Information: PBD: 1993; Related Information: Is Part Of Scientific basis for nuclear waste management XVI; Interrante, C.G. [ed.] [Nuclear Regulatory Commission, Washington, DC (United States)]; Pabalan, R.T. [ed.] [Southwest Research Inst., San Antonio, TX (United States)]; PB: 959 p.
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
36 MATERIALS SCIENCE
STAINLESS STEEL-316L
PITTING CORROSION
CREVICE CORROSION
GROUND WATER
ENVIRONMENTAL EFFECTS
RADIOACTIVE WASTES
PACKAGING
CONTAINERS
STABILITY
ELECTROCHEMISTRY
CHROMIUM ALLOYS
NICKEL ALLOYS
MOLYBDENUM ALLOYS
METALLURGY