Corrosion of cast Stellite-3 analogue in simulated PWR conditions

Karimi, G.N.; Shipway, P.H.; Stewart, D.A.; Hussain, T.

Abstract

© 2018 Elsevier Ltd Wear resistant alloys are required for deployment in 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 shown to be not due to any inhomogeneity in the matrix but instead to be an electrochemical effect.

Citation

Karimi, G., Shipway, P., Stewart, D., & Hussain, T. (2018). Corrosion of cast Stellite-3 analogue in simulated PWR conditions. Corrosion Science, 140, 402-411. https://doi.org/10.1016/j.corsci.2018.05.023

• Journal Article Type: Article
• Acceptance Date: May 23, 2018
• Online Publication Date: May 29, 2018
• Publication Date: Aug 1, 2018
• Deposit Date: Jun 4, 2018
• Publicly Available Date: May 30, 2019
• Journal: Corrosion Science
• Print ISSN: 0010-938X
• Electronic ISSN: 1879-0496
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 140
• Pages: 402-411
• DOI: https://doi.org/10.1016/j.corsci.2018.05.023
• Keywords: Stellite, cobalt alloy, PWR hydrothermal corrosion, interfacial oxide, electrochemistry
• Public URL: https://nottingham-repository.worktribe.com/output/935055
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0010938X18303639