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Characterization of synergistic effects between erosion and corrosion in an aqueous environment using electrochemical techniques

Zhou, S. and Stack, M.M. and Newman, R.C. (1996) Characterization of synergistic effects between erosion and corrosion in an aqueous environment using electrochemical techniques. Corrosion - Houston Tx, 52 (12). pp. 934-946. ISSN 0010-9312

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Abstract

Synergistic effects between erosion and corrosion processes on mild steel (MS) in an aqueous carbonate-bicarbonate solution were studied using electrochemical measurements from a rotating cylinder electrode (RCE) system, A rigorous basis for definition and measurement of the ''pure'' erosion rate and corrosion rate was adopted so that so-called synergism could be analyzed precisely. The total erosion-corrosion rate and the corrosion rate in the presence and absence of erosion were measured for a range of electrode potentials and rotation velocities. The corrosion rate increased significantly with the introduction of erodent because of the effect of erosion on corrosion kinetics. The total erosion-corrosion rate under active dissolution and passivation conditions essentially was the sum of the pure erosion rate and the measured (enhanced) corrosion rate, suggesting there was no significant effect of corrosion on the erosion process. However, in the active-to-passive transition regime, some synergistic effects ascribed to erosion were observed (i.e., mechanical damage was enhanced by corrosion).

Item type: Article
ID code: 34394
Keywords: aqueous environments, carbonate-bicarbonate solution, corrosion rate, dissolution, electrochemical testing, erosion-corrosion, mild steel, passivation, rotating cylinder electrode, synergistic effects, velocity, weight loss, carbon steel, iron, depassivation, Mechanical engineering and machinery, Mining engineering. Metallurgy, Materials Science(all), Chemical Engineering(all), Chemistry(all)
Subjects: Technology > Mechanical engineering and machinery
Technology > Mining engineering. Metallurgy
Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 17 Oct 2011 16:51
    Last modified: 05 Sep 2014 11:55
    URI: http://strathprints.strath.ac.uk/id/eprint/34394

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