Multi-Analysis of Initial Atmospheric Corrosion of Brass Induced by Carboxylic Acids
2011 (English)In: Journal of the Electrochemical Society, ISSN 0013-4651, Vol. 158, no 6, C172-C177 p.Article in journal (Refereed) Published
The initial atmospheric corrosion of a brass (Cu-20Zn) alloy induced by carboxylic (formic, acetic, and propionic) acids has been investigated through surface or near-surface analytical techniques. The main reaction products identified were Zn-carboxylate and a Cu2O-like layer. Their formation kinetics reveal the galvanic effects due to Volta potential variations along the surface, which result in corrosion cells with central anodic formation of zinc-carboxylate and peripheral cathodic formation of Cu2O. The corrosion cell size increases as propionic < acetic < formic acid, reflecting the dependence on ionic conductivity of the aqueous adlayer.
Place, publisher, year, edition, pages
2011. Vol. 158, no 6, C172-C177 p.
PROBE FORCE MICROSCOPY, MOLECULAR STRUCTURAL INFORMATION, SUM-FREQUENCY SPECTROSCOPY, QUANTITATIVE IN-SITU, ACETIC-ACID, ZINC, COPPER, INTERFACES, HUMIDITY, COBALT
IdentifiersURN: urn:nbn:se:kth:diva-33710DOI: 10.1149/1.3577600ISI: 000289854700047ScopusID: 2-s2.0-79955536502OAI: oai:DiVA.org:kth-33710DiVA: diva2:418243
FunderSwedish Research Council
QC 201105252011-05-202011-05-162011-06-07Bibliographically approved