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The influence of carbon particles on the corrosion of iron in a humid, sulphur dioxide‐containing atmosphere
Author(s) -
Ericsson R.,
Heimler B.,
Vannerberg N.G.
Publication year - 1973
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.19730240305
Subject(s) - relative humidity , corrosion , carbon dioxide , water vapor , atmosphere (unit) , humidity , sulfur dioxide , adsorption , sulfur , carbon steel , carbon fibers , materials science , chemistry , charcoal , metallurgy , inorganic chemistry , environmental chemistry , composite material , meteorology , organic chemistry , physics , composite number
Abstract Iron samples covered with a thin layer of activated carbon have been exposed to humid atmospheres at various relative humidities and with a various sulfur dioxide contents. Contrary to expectation the corrosion is initially faster at 55 and 65% relative humidity that at higher humidities. This phenomenon is attributed to adsorption of water vapour on activated charcoal, so that liquid films giving rise to corrosion can be formed at an earlier stage. After extended exposure, however, no accelerating effect can be attributed to the carbon particles.