The effectiveness of Zn-anodes for long-term cathodic protection against the propagation of crevice corrosion in AISI 316L pipe couplings in sea water was investigated. Corrosion potential measurements using mini-capillaries in simulated crevices, and testing of actual pipe couplings under wet/dry service conditions showed that Zn-anodes attached before testing prevent the initiation of crevice corrosion. Attachment after exposure stopped propagation of crevice corrosion for long periods of time, even when first attached after 1500 h of corrosion as well as under cyclic wet/dry loading over a 9 month period.
Experience with cathodic protection against the propagation of crevice corrosion in AISI 316L pipe couplings in sea water
2001
7 Seiten, 4 Bilder, 9 Quellen
Article/Chapter (Book)
English
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