Please use this identifier to cite or link to this item: http://repositorio.ufc.br/handle/riufc/67218
Type: Artigo de Periódico
Title: Characterization study of an oxide film layer produced under CO2/Steam atmospheres on two different maraging steel grades
Authors: Cerra Florez, Mauro Andres
Ribas, Gemma Fargas
Rovira, Joan Josep Roa
Vilarrasa-García, Enrique
Rodríguez-Castellón, Enrique
Sousa, Ana Beatriz Ferreira
Cardoso, Jorge Luiz
Silva, Marcelo José Gomes da
Keywords: Maraging steel grades;Oxide layer;Microstructural characterization;Sliding properties;Spinel;Nickel-Rich austenitic phase
Issue Date: 2021
Publisher: Metals
Citation: SILVA, M. J. G. et al. Characterization study of an oxide film layer produced under CO2/Steam atmospheres on two different maraging steel grades. Metals, vol. 15, n. 5, p. 746, 2021
Abstract: Currently, surface treatments lead to inducing a superficial layer of several nanometers up to micrometer, which in some cases can be protective. In this experimental work, an oxide layer was generated under different atmospheres (CO2 and steam atmospheres) during the thermal aging treatment of two different maraging grades, 300 and 350. Afterwards, this layer was microstructural and mechanically characterized by advanced characterization techniques at the micro- and submicron length scale to highlight some information related to the generated oxide layer. The results showed that the oxide layer (in both grades) was made up of several compounds like: TiO2, MoO3, hematite (α-Fe2O3), and CoFe2O4, this being the majority compound distributed homogeneously throughout the layer. Furthermore, a nickel-rich austenitic phase at the interphase was mainly made up cobalt ions (Co2+), instead of iron ions (Fe2+), within the spinel lattice.
URI: http://www.repositorio.ufc.br/handle/riufc/67218
ISSN: 2075-4701
Appears in Collections:DEMM - Artigos publicados em revista científica

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