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Dissolution of Zirconium in HCl-Methanol

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/1.2425362· OSTI ID:4819544
The dissolution of zirconium in HCl-methanol was studied potentiostatically as a function of HCl concentration and temperature. At low overvoltages the reaction is activation controlled and the rate independent of HCl concentration. In this region preferential grain boundary attack results in etching and separation from the electrode of finely divided panticles of alpha - zirconium. At overvoltages above 0.5v a limiting current density is observed and the metal surface electropolished at HCl concentrations above 1.5M. The current for electropolishing decreases with increasing HCl concentration. The energy of activation at overvoitages of 0.0 and 1.0v (corrosion and electropolishing reactions) was found to be 16.5 and 7.7 kcal/mole, respectively.
Research Organization:
Phillips Petroleum Co., Idaho Falls, Idaho
Sponsoring Organization:
USDOE
NSA Number:
NSA-16-007553
OSTI ID:
4819544
Journal Information:
Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 2 Vol. 109; ISSN JESOAN; ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
Country unknown/Code not available
Language:
English

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