X-ray photoelectron spectroscopy investigation of the carburization of 310 stainless steel

Nouar Tabet, I. Allam, R. C. Yin

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The surface of 310 stainless steel (310SS) samples was investigated by X-ray photoelectron spectroscopy (XPS) after 500h cyclic exposure to two carburizing atmospheres: CH4 (2%)-H2 (98%) at 800°C, and CH4 (10%)-H2 (90%) at 1100°C. The depth distribution of various elements in the surface region was obtained by XPS after successive cycles of argon etching. The microstructure of the alloy was observed by scanning electron microscopy (SEM) and the phases formed during the exposure were analyzed by X-ray diffraction (XRD). The results showed that the major phases that were formed within few micrometer depth during exposure at 800°C include both iron and chromium carbides. (Mn, Cr) oxide was also formed as a result of the reaction with the residual oxygen of the atmosphere. A region of few microns width that was relatively depleted of chromium was formed under the surface as a result of the outwards diffusion of chromium. The exposure to the reducing atmosphere at 1100°C led to the formation of various iron and chromium carbides. No oxide was formed during exposure. In all exposed samples, the surface was Cr enriched while nickel remained buried under the surface region that reacted with the atmosphere.

Original languageEnglish
Pages (from-to)259-272
Number of pages14
JournalApplied Surface Science
Volume220
Issue number1-4
DOIs
Publication statusPublished - 30 Dec 2003
Externally publishedYes

Fingerprint

Stainless Steel
stainless steels
Chromium
Stainless steel
X ray photoelectron spectroscopy
photoelectron spectroscopy
chromium carbides
atmospheres
x rays
carbides
Oxides
Carbides
chromium
Iron
carburizing
iron
Carburizing
oxides
Argon
Nickel

Keywords

  • 310SS
  • Alloys
  • Carburization
  • Surface segregation
  • XPS

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Condensed Matter Physics

Cite this

X-ray photoelectron spectroscopy investigation of the carburization of 310 stainless steel. / Tabet, Nouar; Allam, I.; Yin, R. C.

In: Applied Surface Science, Vol. 220, No. 1-4, 30.12.2003, p. 259-272.

Research output: Contribution to journalArticle

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