FERNANDES, S.M.C.CORREA, O.V.SOUZA, J.A. deRAMANATHAN, L.V.2015-11-232015-11-23FERNANDES, S.M.C.; CORREA, O.V.; SOUZA, J.A. de; RAMANATHAN, L.V. Lanthanide based conversion coatings for long term wet storage of aluminium-clad spent fuel. In: TRANSACTIONS RRFM 2010, March 21-25, 2010, Marrakesh, Morocco. <b>Proceedings...</b> Disponível em: http://repositorio.ipen.br/handle/123456789/25260.http://repositorio.ipen.br/handle/123456789/25260Spent fuels from research reactors are stored in basins with water of less than desirable quality at many facilities around the world and instances of cladding failure caused by pitting corrosion have been reported. Conversion coatings have been used in many industries to protect different metals, including aluminium alloys. This paper presents the results of an ongoing investigation in which the corrosion resistance of lanthanide (cerium, lanthanum and praseodymium) based conversion coated RR fuel cladding alloys has been studied. Electrochemical tests in the laboratory revealed higher corrosion resistance of CeO2, La2O3 and Pr2O3 coated AA 1100 and AA 6061 alloys in NaCl solutions. Uncoated and CeO2 coated coupons of these alloys exposed for 50 days to the spent fuel basin of the IEA-R1 research reactor in IPEN, Brazil, revealed marked reductions in the extent of pitting corrosion.openAccessaluminiumaluminium alloysceriumcerium oxidescladdingcorrosion resistanceiear-1 reactorlanthanumlanthanum oxidespitting corrosionpraseodymiumpraseodymium oxidessodium chloridesspent fuelswet storageTexto completo de eventohttps://orcid.org/0000-0003-4822-8840