COPPER CORROSION IN IRRADIATED ENVIRONMENTS. THE INFLUENCE OF H//2O//2 ON THE ELECTROCHEMISTRY OF COPPER DISSOLUTION IN HCl-ELECTROLYTE.

W. H. Smyrl, R. T. Bell, R. T. Atanasoski, R. S. Glass

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

The anodic dissolution of copper has been examined in deaerated 0. 1 M HCl aqueous solution in the presence of H//2O//2. Concentrations of H//2O//2 up to 0. 2 M were studied at a rotating copper disk-platinum ring electrode. The open circuit potential (OCP) of copper was found to depend on both peroxide concentration and rotation rate. The OCP shifts towards more positive values with increasing H//2O//2 concentration (C) and decreasing rotation rate ( OMEGA ). The dependence of OCP on (C/ OMEGA ** one-half ) was the same as for oxygenated solutions reported earlier, at small values of (C/ OMEGA ** one-half ). At higher values of (C/ OMEGA ** one-half ), departure from the expected behavior was observed. The current-voltage curves for anodic dissolution of copper were also influenced by the presence of peroxide. The curves recorded with the potential scanned in the positive direction showed the expected 60 mV slope, but the reverse scans showed significant departures. At a given potential scan rate, hysteresis was observed which was larger for higher H//2O//2 concentrations, lower rotation rates, and more positive anodic potential limits. Monitoring the cuprous ions at the outer Pt ring revealed that there was a complex set of events taking place at the copper surface, including film formation and the appearance of cupric ions.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposia Proceedings
EditorsJohn K. Bates, Waldemar B. Seefeldt
PublisherMaterials Research Soc
Pages591-601
Number of pages11
ISBN (Print)0931837499
StatePublished - Dec 1 1987

Publication series

NameMaterials Research Society Symposia Proceedings
Volume84
ISSN (Print)0272-9172

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    Smyrl, W. H., Bell, R. T., Atanasoski, R. T., & Glass, R. S. (1987). COPPER CORROSION IN IRRADIATED ENVIRONMENTS. THE INFLUENCE OF H//2O//2 ON THE ELECTROCHEMISTRY OF COPPER DISSOLUTION IN HCl-ELECTROLYTE. In J. K. Bates, & W. B. Seefeldt (Eds.), Materials Research Society Symposia Proceedings (pp. 591-601). (Materials Research Society Symposia Proceedings; Vol. 84). Materials Research Soc.