Sabioni, Antônio Claret SoaresHuntz, Anne MarieLuz, Elizete Conceição daMantel, MarcHaut, Christian2012-07-162012-07-162003SABIONI, A. C. S. et al. Comparative study of high temperature oxidation behaviour in AISI 304 and AISI 439 stainless steels. Materials Research, v. 6, n.2, p.179-185, apr-jun. 2003. Disponível em: <http://www.scielo.br/pdf/mr/v6n2/16021.pdf>. Acesso em: 16 jul. 2012.15161439http://www.repositorio.ufop.br/handle/123456789/1127This work deals with a comparison of high temperature oxidation behaviour in AISI 304 austenitic and AISI 439 ferritic stainless steels. The oxidation experiments were performed between 850 and 950 °C, in oxygen and Ar (100 vpm H2). In most cases, it was formed a Cr2O3 protective scale, whose growth kinetics follows a parabolic law. The exception was for the the AISI 304 steel, at 950 °C, in oxygen atmosphere, which forms an iron oxide external layer. The oxidation resistance of the AISI 439 does not depend on the atmosphere. The AISI 304 has the same oxidation resistance in both atmospheres, at 850 °C, but at higher temperatures, its oxidation rate strongly increases in oxygen atmosphere. Concerning the performance of these steels under oxidation, our results show that the AISI 439 steel has higher oxidation resistance in oxidizing atmosphere, above 850 °C, while, in low pO2 atmosphere, the AISI 304 steel has higher oxidation resistance than the AISI 439, in all the temperature range investigated.en-USStainless steelOxidationCorrosionArtigo publicado em periodicoO periódico Materials Research dá permissão ao RI/UFOP para depositar uma cópia eletrônica dos artigos publicados por esse periódico em que ao menos um dos autores é aluno ou professor da UFOP. Contato via email em 25 out. 2013.