Evaluation of Corrosion Behavior of Galvanized Steel Treated with Conventional Conversion Coatings and a Chromate-Free Organic Inhibitor
Joint Authors
Rodriguez-Reyna, Sandra L.
Hernandez-Alvarado, Laura A.
Hernandez, Luis S.
Source
International Journal of Corrosion
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-11-22
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Conventional weight loss tests and both DC and AC electrochemical techniques were used to study if an organic inhibitor containing an alkanolamine salt of a polycarboxylic acid can substitute toxic coatings as chromating and certain phosphating procedures in the protection of galvanized steel.
The electrolyte used was a 0.5 M aerated NaCl solution.
All tests gave concordant results, indicating that the chromate-free organic inhibitor does protect galvanized steel in this environment, even though the provided protection was less than that of the chromate conversion coating.
It was observed that, after a moderate initial attack, the corrosion rate diminishes due to the appearance and growth of passivating corrosion products layers, mainly constituted by zinc hydroxychloride (Zn5(OH)8CI2⋅H2O) and two varieties of zinc hydroxide, among other crystalline compounds.
American Psychological Association (APA)
Hernandez-Alvarado, Laura A.& Hernandez, Luis S.& Rodriguez-Reyna, Sandra L.. 2011. Evaluation of Corrosion Behavior of Galvanized Steel Treated with Conventional Conversion Coatings and a Chromate-Free Organic Inhibitor. International Journal of Corrosion،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-466423
Modern Language Association (MLA)
Hernandez-Alvarado, Laura A.…[et al.]. Evaluation of Corrosion Behavior of Galvanized Steel Treated with Conventional Conversion Coatings and a Chromate-Free Organic Inhibitor. International Journal of Corrosion No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-466423
American Medical Association (AMA)
Hernandez-Alvarado, Laura A.& Hernandez, Luis S.& Rodriguez-Reyna, Sandra L.. Evaluation of Corrosion Behavior of Galvanized Steel Treated with Conventional Conversion Coatings and a Chromate-Free Organic Inhibitor. International Journal of Corrosion. 2011. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-466423
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-466423