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Assessment of rust layers formed on weathering steel in saline environment by gas adsorption
Author(s) -
Ishikawa T.,
Tanaka R.,
Minamigawa M.,
Kandori K.,
Tanaka H.,
Nakayama T.
Publication year - 2015
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.201508422
Subject(s) - weathering , weathering steel , adsorption , rust (programming language) , atmosphere (unit) , materials science , metallurgy , nitrogen , chemistry , geology , corrosion , geochemistry , organic chemistry , computer science , programming language , physics , thermodynamics
The rusts of different kinds of weathering steels and mild steel formed by CCT and exposure to a coastal atmosphere were examined by the adsorption of nitrogen and water molecules. The specific surface area (S) of the rusts was determined from the adsorption isotherms. The rusts of the weathering steels showed higher S and smaller particle size than those of the mild steel, indicating that the weathering steels form more compact rust layers compared to the mild steel. The S of the rusts formed at different positions of a simulated girder located in the coast strongly depended on the setting position.