Effect of oxygen partial pressure on oxidation behavior of ferritic stainless steel AISI 441 at high temperatures
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2019
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Engineering Failure Analysis
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In this investigation the oxidation behavior of AISI 441 stainless steel (SS) in the range from
850 °C to 950 °C was determined during 50 h in two different atmospheres: (a) synthetic air in a
tubular oven; (b) argon with 1 ppm of O2 in a thermal balance. The oxidation kinetics was determined
from the measured mass change as a function of oxidation time. Examination of the
microstructure of the oxides and determination of their chemical composition were performed by
using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and
glancing angle X-ray diffraction (GAXRD). Chemical analyses showed that films formed on the
AISI 441 steel surface consisted mostly of chromium oxide but manganese, iron, titanium and
silicon oxides were found in the oxidized layer. In synthetic air, the steel oxidation rate increased
gradually as the temperature increased, but in the argon atmosphere with 1 ppm of oxygen, the
highest oxidation rate was observed at 900 °C and the lowest at 950 °C.
Como referenciar
SALGADO, MARIA de F.; CARVALHO, IURE S.; SANTOS, RAFAEL S.; PORTO, JOÃO A.S.; CORREA, OLANDIR V.; RAMANATHAN, LALGUDI V.; BRANDIM, AYRTON de S.; LINS, VANESSA F.C. Effect of oxygen partial pressure on oxidation behavior of ferritic stainless steel AISI 441 at high temperatures. Engineering Failure Analysis, v. 105, p. 215-226, 2019. DOI: 10.1016/j.engfailanal.2019.07.011. Disponível em: http://repositorio.ipen.br/handle/123456789/30421. Acesso em: 12 Mar 2025.
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.