Effect of surface deposited rare earth oxide gel characteristics on cyclic oxidation behaviour of Fe-20-Cr alloys
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Rare earths have been used to increase high temperature oxidation resistance of many chromium dioxide and
alumina forming alloys. These rare earths can be added as elements (or as oxide dispersions) to the alloys or applied
as an oxide coating to the alloy surface. The sol-gel technique is considered to be very efficient to apply fine oxide
particle coatings. Oxide gel coatings of various rare earths such as lanthanum, cerium, praseodymium, neodymium,
samarium, gadolinium, dysprosium, yttrium, erbium and ytterbium have been applied to an iron-chromium alloy
to determine their influence on the cyclic oxidation behavior (RT-900 °C) of the alloy. The morphology and
coverage of the rare earth oxide gels varied with the type of rare earth. The cyclic oxidation resistance of the alloy
increased with increase in time at temperature required to reach a specific chromium dioxide layer thickness and
this in turn was influenced by the rare earth ion radius and characteristics of the rare earth oxide coating such as
morphology, stability, coverage, resistance to thermal stresses and consequently adhesion.
Como referenciar
FERNANDES, STELA M.C.; RAMANATHAN, LALGUDI V. Effect of surface deposited rare earth oxide gel characteristics on cyclic oxidation behaviour of Fe-20-Cr alloys. Materials Research, v. 9, n. 2, p. 199-203, 2006. DOI: 10.1590/S1516-14392006000200016. Disponível em: http://repositorio.ipen.br/handle/123456789/5362. Acesso em: 24 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.