High-temperature corrosion of titanium-, niobium-, and manganese-rich Fe-25Cr alloys in H sub 2 -H sub 2 O-H sub 2 S gas mixtures

Journal Article · Wed Jan 31 23:00:00 EST 1990 · Oxidation of Metals; (USA)

DOI:https://doi.org/10.1007/BF00665669· OSTI ID:6551777

Wang, C R; Zhang, W Q; Zhu, R Z ^[1]

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

The simultaneous sulfidation and oxidation of Fe-25Cr, Fe-25Cr-4.3Ti, Fe-25Cr-7.5Nb, and Fe-25Cr-9.0Mn alloys were studied at 1,023, 1,1,23, and 1,223 K, respectively, in H{sub 2}-H{sub 2}O-H{sub 2}S gas mixtures. The influences of titanium, niobium, and manganese on the transition from protective oxide formation to the formation of sulfide-rich corrosion products of Fe-25Cr alloys have been investigated. It has been found that additions of titanium and niobium can improve the scaling resistance of Fe-25Cr alloys against sulfidation in H{sub 2}-H{sub 2}O-H{sub 2}S gas mixtures at high temperatures. Thermodynamic stability diagrams are used to explain the experimental results.

• OSTI ID: 6551777
• Journal Information: Oxidation of Metals; (USA), Journal Name: Oxidation of Metals; (USA) Vol. 33:1-2; ISSN 0030-770X; ISSN OXMEA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHEMICAL REACTIONS
CHROMIUM
DATA
DATA ANALYSIS
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MANGANESE
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
NIOBIUM
NUMERICAL DATA
OXIDATION
SCALING
SULFIDATION
TITANIUM
TRANSITION ELEMENTS
VERY HIGH TEMPERATURE