Corrosion of cast Stellite-3 analogue in simulated PWR conditions

Karimi, G.N., Shipway, P.H., Stewart, D.A. and Hussain, T. (2018) Corrosion of cast Stellite-3 analogue in simulated PWR conditions. Corrosion Science . ISSN 1879-0496

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Wear resistant alloys are required for deployment of pressurised water reactor primary circuits and in this context, the corrosion behaviour of a cast cobalt-based alloy following exposure for 30 days in lithiated water at 300°C was investigated. Corrosion of the surface was observed, resulting in the formation of a ~100 nm thick chromium and silicon-rich oxide. Preferential corrosion of the matrix at its interface with just one of the carbide types was observed to a depth of ~1 μm; for the first time this was found not due to any inhomogeneity in the matrix but was instead an electrochemical effect.

Item Type: Article
Keywords: Stellite, cobalt alloy, PWR hydrothermal corrosion, interfacial oxide, electrochemistry
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
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Depositing User: Eprints, Support
Date Deposited: 04 Jun 2018 09:26
Last Modified: 04 May 2020 19:38

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