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The effect of atmospheric pollution on materials damage
Author(s) -
Syed S.
Publication year - 2013
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.201206708
Subject(s) - corrosion , relative humidity , pollution , pollutant , deposition (geology) , environmental chemistry , materials science , acid deposition , environmental science , analytical chemistry (journal) , metallurgy , chemistry , meteorology , soil science , physics , geology , ecology , paleontology , organic chemistry , sediment , soil water , biology
According to ASTM G50‐76 , materials have been exposed to atmospheres of Saudi Arabia. Environmental factors such as temperature, relative humidity and deposition rates of pollutants (Cl − and SO 2 ) were investigated. X‐ray diffraction was used for characterization. Corrosion rates were determined by weight loss. As per ISO 9223 , aggressivity classification was made. The results obeyed well with the empirical kinetics equation of the form C = Kt n , where K and C are the corrosion losses in mg/cm 2 after 1 and t years of the exposure, respectively, and n is constant. Based on n values, the corrosion mechanisms of samples are predicted.