Oxidation of AISI 304 and AISI 439 stainless steels.

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dc.contributor.authorHuntz, Anne Marie
dc.contributor.authorReckmann, A.
dc.contributor.authorHaut, Christian
dc.contributor.authorSévérac, C.
dc.contributor.authorHerbst, M.
dc.contributor.authorResende, Fernando César Teixeira
dc.contributor.authorSabioni, Antônio Claret Soares
dc.date.accessioned2012-07-13T14:45:59Z
dc.date.available2012-07-13T14:45:59Z
dc.date.issued2007
dc.description.abstractThe oxidation behaviour of AISI 304 and AISI 439 stainless steels was studied at high temperatures, under various oxygen pressures and in the presence or not of water vapour. Thermogravimetric analyses were conducted in isothermal conditions from 850 to 950 ◦C for 50 h and microstructural and chemical analyses of the oxide films grown by oxidation were performed by SEM and EDX. The oxide films were also analysed by grazing X-ray diffraction and by X photoelectron spectroscopy (XPS). The AISI 439 steel has higher oxidation resistance than AISI 304, above 850 ◦C, under high oxygen pressures. On the other hand, the AISI 304 steel has higher oxidation resistance under low oxygen pressures in the whole temperature range. In order to check whether the growth kinetics of Cr2O3 formed by the oxidation of stainless steels was controlled by oxygen or/and chromium diffusion through the oxide film, the oxidation constants were theoretically calculated on the basis of diffusion data using Wagner’s Theory. The calculated values of the oxidation constants agree reasonably well with experimental values, therefore confirming the role of diffusion processes on the growth of chromia on stainless steels.pt_BR
dc.identifier.citationHUNTZ, A. M. et al. Oxidation of AISI 304 and AISI 439 stainless steels. Materials Science and Engineering A, v. 447, n. 1-2, p. 266-276, fev. 2007. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0921509306021290>. Acesso em: 13 jul. 2012.pt_BR
dc.identifier.issn09215093
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/1115
dc.language.isoen_USpt_BR
dc.rights.licenseO periódico Materials Science and Engineering A concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3345930503206.
dc.subjectOxygenpt_BR
dc.subjectWater vapourpt_BR
dc.subjectOxidationpt_BR
dc.subjectAISI 304 stainless steelpt_BR
dc.subjectAISI 439 stainless steelpt_BR
dc.titleOxidation of AISI 304 and AISI 439 stainless steels.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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