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Advisor(s)
Abstract(s)
This paper reports an electrochemical study on
the corrosion of brass in deoxygenated nonbuffered and
buffered natural and artificial seawater solutions under
anaerobic conditions. Cyclic voltammograms of brass and
copper in natural seawater (NSW) and artificial seawater
(ASW) were obtained in the passive and transpassive
potential regions. The corrosion resistance of brass in
natural and artificial seawater was evaluated, and opencircuit
potentials were recorded over exposure period of
1 week. Brass samples from 3-month exposures in
deoxygenated nonbuffered ASW and NSW, under opencircuit
potential, have been imaged by scanning electron
microscopy, and the elemental composition of the corrosion
products was obtained by energy dispersive spectrometry
analysis. It has been concluded that, under anaerobic
conditions, the aggressivity of NSW is higher, with brass
being less resistant to corrosion than copper, and that buffer
contributes to reduce the aggressivity of both media
Description
Keywords
brass corrosion natural seawater synthetic seawater anaerobic conditions cyclic voltammetry
Pedagogical Context
Citation
"Journal of Solid State Electrochemistry". ISSN 1432-8488. 12 (2008) 121-131