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Identification of the corrosion products formed on copper in sulfur containing environments
Author(s) -
Fiaud C.,
Safavi M.,
Vedel J.
Publication year - 1984
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.19840350802
Subject(s) - hydrogen sulfide , sulfur , sulfide , corrosion , copper , sulfur dioxide , inorganic chemistry , sulfate , oxide , chemistry , hydrogen , metallurgy , materials science , organic chemistry
Tarnishing layers grown on copper exposed to air contaminated by traces of sulfur dioxide and/or hydrogen sulfide were detected by a coulometric and characterized by a chemical method. Depending on the nature of the corrosive gas, or on the use of a gas mixture, it was found that sulfate, sulfide, oxides or a mixed oxide‐sulfide compound could be formed in these conditions. The same tarnishing products were found, either in hydrogen sulfide or in a sulfur dioxide + hydrogen sulfide mixture, and the same linear growth law of the copper (I) sulfide was also found, within the limits of the duration of the corrosion test, in the two gaseous environments.