Corrosion evaluation of metallic HLW/spent fuel disposal containers - Review

B. Kurstena*, E. Smailosb, I. Azkaratec, L. Wermed, N. R. Smarte, G. Marxf, M. A. Cuñadog, G. Santarinih

*Autor correspondiente de este trabajo

Producción científica: Contribución a una conferenciaArtículorevisión exhaustiva

2 Citas (Scopus)

Resumen

Over the years a lot of investigations have been performed to choose suitable container materials and to characterize their long-term corrosion behaviour in contact with their potential disposal environments, i.e. salt, clay, and granite. Carbon steels, stainless steels, nickel-based alloys, titanium-based alloys, and copper have been widely investigated as potential container materials depending on the studied host rock formation. The results obtained in salt environments indicate that the passively corroding Ti99.8-Pd is the primary choice for the thin-walled corrosion-resistant concept, since its general corrosion rate is negligible and it is highly resistant to localized corrosion and stress corrosion cracking (SCC) in salt brines. The TStE 355 carbon steel is the first candidate for the corrosion-allowance concept because it is resistant to pitting corrosion and SCC and its general corrosion rates are sufficiently low to provide corrosion allowance acceptable for thick-walled containers. Stainless steels, Ni-based alloys, and Ti-based alloys are the most important candidate container materials in clay for the thin-walled concept, while carbon steel is considered the main choice for the thick-walled corrosion-allowance concept. Studies performed in granite seem to indicate that copper containers provide an excellent corrosion barrier with an estimated lifetime exceeding 100,000 years. The TStE 355 carbon steel is also a valid option for a thick-walled container concept in granite. In this paper, some relevant corrosion data of carbon steel and stainless steel in cementitious environments are given in addition because large amounts of concrete will be used as structural materials in most of the envisaged repository design concepts. This paper also provides recommendations for future studies.

Idioma originalInglés
EstadoPublicada - 2004
EventoEuropean Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004 - Nice, Francia
Duración: 12 sept 200416 sept 2004

Conferencia

ConferenciaEuropean Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004
País/TerritorioFrancia
CiudadNice
Período12/09/0416/09/04

Huella

Profundice en los temas de investigación de 'Corrosion evaluation of metallic HLW/spent fuel disposal containers - Review'. En conjunto forman una huella única.

Citar esto