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Crevice corrosion of some stainless steels in surface and deep ocean waters

Conference ·
OSTI ID:5684046
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Parallel crevice corrosion tests were conducted in pumped prototypical OTEC seawaters - warm surface seawater and cold deep ocean water. Multiple crevice assemblies were used. The results are generally consistent with results from other test sites, except for some minor variations. It was found that the cold deep-ocean water is somewhat less aggressive than the surface water but it is possible that this difference may disappear over very long periods of exposures. For the high alloy stainless steels, the incubation period for crevice corrosion may be well in excess of sixty days. Full immunity was shown by the ferritic alloy 29-4C, the austenitic JS 700 and the Ni-base alloy Hastelloy 276. Minor attack was shown by 256 SMo, AL-6XN, JS 777, and Hastelloy G3. AL-6X was immune in the cold water but showed significant corrosion in the warm while the opposite was true for a number of aluminum alloys. Nitronic 50 and alloys 316 and 304 corroded rapidly in both waters.
OSTI ID:
5684046
Report Number(s):
CONF-880314--
Country of Publication:
United States
Language:
English

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Related Subjects

14 SOLAR ENERGY
140800 -- Solar Energy-- Ocean Energy Systems
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
AUSTENITIC STEELS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
CHROMIUM-NICKEL-MOLYBDENUM STEELS
CORROSION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
CREVICE CORROSION
FERRITIC STEELS
HASTELLOYS
HEAT RESIS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
HYDROGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
MANGANESE ALLOYS
MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
OCEAN THERMAL POWER PLANTS
OXYGEN COMPOUNDS
POWER PLANTS
SEAWATER
SOLAR POWER PLANTS
STAINLESS STEEL-21-6-9
STAINLESS STEEL-304
STAINLESS STEEL-316
STAINLESS STEELS
STEEL-CR17NI12MO3
STEEL-CR19NI10
STEEL-CR21MN9NI6
STEELS
THERMAL POWER PLANTS
WATER