The influence of aluminum on the transition from oxide to sulfide of aluminum-rich Fe-25Cr alloys with low-oxygen and high sulfur pressures

Journal Article · Sun Oct 01 00:00:00 EDT 1989 · Oxidation of Metals; (USA)

DOI:https://doi.org/10.1007/BF00664801· OSTI ID:6086006

Wang, C R; Zhao, Z B; Xia, S K; Zhang, W Q ^[1]

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1. Univ. of Science and Technology, Beijing (China)

The simultaneous oxidation and sulfidation of Fe-25Cr, Fe-25Cr-5Al and Fe-25Cr-10Al alloys were studied at 1,023, 1,123, and 1,223 K in H{sub 2}-H{sub 2}O-H{sub 2}S gas mixtures. Fe-25Cr and aluminum-rich alloys with 0-10 wt.% Al show, in H{sub 2}H{sub 2}O-H{sub 2}S gas mixtures at high temperatures, a transition from protective oxide-scale formation to the formation of a sulfide-rich corrosion product. The kinetics boundary, which indicates the transition from oxide formation with slow weight gains to sulfide formation with rapid weight gains, has been found in these three alloys. The existence of aluminum plays an important role to suppress the sulfidation of Fe-25Cr alloys.

• OSTI ID: 6086006
• Journal Information: Oxidation of Metals; (USA), Journal Name: Oxidation of Metals; (USA) Vol. 32:3-4; ISSN 0030-770X; ISSN OXMEA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM
CHEMICAL REACTIONS
CHROMIUM
DATA
DATA ANALYSIS
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
NUMERICAL DATA
OXIDATION
SULFIDATION
TRANSITION ELEMENTS