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Behaviour of Cu‐Ni alloys in natural sea water and NaCl solution
Author(s) -
Crousier J.,
Beccaria A.M.
Publication year - 1990
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.19900410406
Subject(s) - corrosion , copper , dissolution , nickel , metallurgy , seawater , electrochemistry , materials science , chloride , sodium , chemistry , electrode , geology , oceanography
A series of Cu‐Ni alloys, ranging from 30 to 90% copper was studied by electrochemical methods in 3.5% sodium chloride solution and in sea water. The composition of the corrosion layer and of the solution after various immersion times was determined by chemical methods and X‐ray diffraction. The results are consistent with a corrosion process involving dissolution of copper and nickel enrichment at the surface. The corrosion resistance of all the alloys is better in NaCl solution than in sea water.