Gildes model studies of aqueous chemistry. II. The corrosion of zinc in gaseous exposure chambers

• Published in: Corrosion science Vol. 38; no. 12; pp. 2181 - 2199
• Main Authors: Farrow, L.A, Graedel, T.E, Leygraf, C
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01-12-1996; Elsevier Science
• Subjects: A. zinc; Applied sciences; B. modelling studies; C. atmospheric corrosion; Corrosion; Corrosion environments; Exact sciences and technology; Metals. Metallurgy; A. zinc; C. atmospheric corrosion; B. modelling studies; Corrosion mechanism; Wet air; Nitrogen dioxide; Modeling; Corrosion product; Sulfur dioxide; Zinc; Atmospheric corrosion
• ISSN: 0010-938X; 1879-0496
• DOI: 10.1016/S0010-938X(96)00081-9

The GILDES model has been used to perform the first theoretical mechanistic study of the atmospheric corrosion of zinc in a controlled environment. Detailed comparisons are made of model results with laboratory data for short-term (0–1000 min) and long-term (0–680 h) exposures of zinc to SO
2, NO
2 and O
3 at high relative humidities. The agreement of theory and experiment is excellent, indicating that the model has captured the principal processes (especially ligand-promoted dissolution) involved in the corrosion of zinc under these conditions.