Auger and depth profiling study of the sulfidation of iron and Fe-25 wt. % Cr alloy in H/sub 2/S

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · J. Vac. Sci. Technol., A; (United States)

DOI:https://doi.org/10.1116/1.572913· OSTI ID:5329951

Narayan, P B.V.; Bevolo, A J; Chen, C W; Carlson, O N

Polycrystalline iron and an Fe-25 wt. % Cr alloy were exposed from 200 to 300 /sup 0/C in an H/sub 2/S--argon mixture at one atmosphere pressure. Depth profiling was conducted on the sulfidized specimen in an Auger spectrometer. For both Fe and the Fe--Cr alloy temperature had a much stronger effect than exposure time on the growth rate of the sulfide layer. The sulfidation rate of the Fe--Cr alloy was much lower than that for pure iron. Evidence from the depth profile indicates that the growth of the sulfide layer below 250 /sup 0/C proceeds primarily by the difffusion of iron rather than sulfur ions through the scale.

• Research Organization: Ames Laboratory-USDOE, Iowa State University, Ames, Iowa 50011
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 5329951
• Journal Information: J. Vac. Sci. Technol., A; (United States), Journal Name: J. Vac. Sci. Technol., A; (United States) Vol. 3:5; ISSN JVTAD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
AUGER ELECTRON SPECTROSCOPY
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CRYSTALS
ELECTRON SPECTROSCOPY
ELEMENTS
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IMPURITIES
IRON
IRON ALLOYS
METALS
POLYCRYSTALS
SPECTROSCOPY
SULFIDATION
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENTS