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Type: Artigo de periódico
Title: Identification of the mechanism-limiting nitrogen diffusion in metallic alloys by in situ photoemission electron spectroscopy
Author: Figueroa, CA
Ferlauto, AS
Alvarez, F
Abstract: In situ photoemission electron spectroscopy is used to identify the mechanism limiting the thermally activated nitrogen diffusion in metallic alloys. The samples were prepared by bombarding stainless steel with a broad ion source in a high-vacuum chamber. The photoemission spectra evolution on increasing controlled oxygen partial pressure is correlated with bulk material properties. The presence of oxygen inhibits the formation of iron nitrides and gamma(N)-phase (austenitic face-centered-cubic lattice containing nitrogen), which proved to be fundamental for efficient nitrogen penetration in the alloy. (C) 2003 American Institute of Physics.
Country: EUA
Editor: Amer Inst Physics
Citation: Journal Of Applied Physics. Amer Inst Physics, v. 94, n. 8, n. 5435, n. 5437, 2003.
Rights: aberto
Identifier DOI: 10.1063/1.1605250
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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