TY - JOUR
T1 - Atmospheric corrosion of galvanized steel and precipitation runoff from zinc in a marine environment
AU - Vera, Rosa
AU - Guerrero, Fabián
AU - Delgado, Diana
AU - Araya, Raquel
PY - 2013
Y1 - 2013
N2 - This study focuses on the behavior of galvanized steel in a corrosive marine environment and on the runoff process for the same material occurring in Valparaiso, Chile. The corrosion potential and corrosion rate evaluated via mass loss were used to determine the corrosion damage to the galvanized steel. The compositions of the corrosion products were determined using X-ray diffractometry (XRD), and their morphology through scanning electron microscopy (SEM). The runoff solutions collected after rainfall were analyzed to determine the pH value, and Cl-, SO42- and Zn 2+ ion concentrations. The results after 15 months show that the corrosion potential of the galvanized steel increases over time, indicating the formation of a protective film that consists of zinc corrosion products. These products were identified as zincite and simonkolleite. The pH values obtained for the runoff solutions are similar to those of the reference rainwater samples, and the chloride concentrations of the runoff solutions are approximately twice those of the rainwater.
AB - This study focuses on the behavior of galvanized steel in a corrosive marine environment and on the runoff process for the same material occurring in Valparaiso, Chile. The corrosion potential and corrosion rate evaluated via mass loss were used to determine the corrosion damage to the galvanized steel. The compositions of the corrosion products were determined using X-ray diffractometry (XRD), and their morphology through scanning electron microscopy (SEM). The runoff solutions collected after rainfall were analyzed to determine the pH value, and Cl-, SO42- and Zn 2+ ion concentrations. The results after 15 months show that the corrosion potential of the galvanized steel increases over time, indicating the formation of a protective film that consists of zinc corrosion products. These products were identified as zincite and simonkolleite. The pH values obtained for the runoff solutions are similar to those of the reference rainwater samples, and the chloride concentrations of the runoff solutions are approximately twice those of the rainwater.
KW - Atmospheric corrosion
KW - Chloride
KW - Galvanized steel
KW - Mass loss
KW - Runoff
UR - http://www.scopus.com/inward/record.url?scp=84876928751&partnerID=8YFLogxK
U2 - 10.5935/0103-5053.20130060
DO - 10.5935/0103-5053.20130060
M3 - Article
AN - SCOPUS:84876928751
VL - 24
SP - 449
EP - 458
JO - Journal of the Brazilian Chemical Society
JF - Journal of the Brazilian Chemical Society
SN - 0103-5053
IS - 3
ER -