A quaternary (Cu-Zn-Sn-Pb) cast bronze was submitted to an electrochemical corrosion experiment using an anodic polarization sweep. The surface/interface chemical analysis of the patina removed after the anodic polarization and the metallographic observations on the corroded bulk alloy highlight the onset of a dezincification process followed by a decuprification process, aswell as the formation of a Sn-enriched layer located at the interface patina-bulk alloy. Different local corrosion patterns, as CuCl precipitation in pits, epitaxial growth of corrosion products on dendritic structures and of Cl-enriched oxyhydroxides, are observed too. The results are discussed in comparison with experimental findings obtained in previous ageing tests performed on the same alloy in different chloride-containing solutions.
Surface and interface investigation of electrochemically induced corrosion on a quaternary bronze / O. Papadopoulou; M. Delagrammatikas; P. Vassiliou; S. Grassini;E. Angelini; V. Gouda. - In: SURFACE AND INTERFACE ANALYSIS. - ISSN 0142-2421. - STAMPA. - 46:10-11(2014), pp. 771-775. [10.1002/sia.5502]
|Titolo:||Surface and interface investigation of electrochemically induced corrosion on a quaternary bronze|
|Data di pubblicazione:||2014|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1002/sia.5502|
|Appare nelle tipologie:||1.1 Articolo in rivista|