High-temperature sulfidation of Fe-Mn-Cr alloys
Journal Article
·
· Oxidation of Metals; (United States)
- Univ. of New South Wales, Kensington (Australia)
Alloys of composition (in weight percent) Fe-10Mn-10Cr, Fe-10Mn-25Cr, and Fe-25Mn-10Cr were reacted at temperatures of 973 and 1,073 K with flowing hydrogen-hydrogen sulfide mixtures corresponding to equilibrium sulfur partial pressures of 10{sup {minus}3} and 8 Pa. Sulfide-scale-growth kinetics and morphologies were compared with those found on pure iron and on the binary alloys Fe-25Cr and Fe-25Mn. All alloys reacted according to parabolic kinetics after an initial period of slow approach to this steady state. Of the materials examined, the binary Fe-25Mn showed the slowest sulfidation rates, except at 973 K and a sulfur pressure of 8 Pa, where Fe-10M-25Cr had the best performance. Ternary alloys provided improved performance only when a scale layer of Cr{sub 3}S{sub 4} was formed, an event dependent on temperature and sulfur activity. Multilayered scales were always formed on the ternary alloys, and the role of these layers in controlling sulfidation rates is discussed.
- OSTI ID:
- 5465376
- Journal Information:
- Oxidation of Metals; (United States), Journal Name: Oxidation of Metals; (United States) Vol. 36:5-6; ISSN 0030-770X; ISSN OXMEA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOY SYSTEMS
ALLOYS
BINARY ALLOY SYSTEMS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM COMPOUNDS
CHROMIUM SULFIDES
COATINGS
COMPARATIVE EVALUATIONS
CORROSION RESISTANCE
DATA
ELEMENTS
EVALUATION
EXPERIMENTAL DATA
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INFORMATION
IRON
IRON ALLOYS
IRON BASE ALLOYS
KINETICS
MANGANESE ALLOYS
METALS
MICROSCOPY
MORPHOLOGY
NONMETALS
NUMERICAL DATA
OPTICAL MICROSCOPY
PROTECTIVE COATINGS
REACTION KINETICS
SCALING
SULFIDATION
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
TERNARY ALLOY SYSTEMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOY SYSTEMS
ALLOYS
BINARY ALLOY SYSTEMS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM COMPOUNDS
CHROMIUM SULFIDES
COATINGS
COMPARATIVE EVALUATIONS
CORROSION RESISTANCE
DATA
ELEMENTS
EVALUATION
EXPERIMENTAL DATA
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INFORMATION
IRON
IRON ALLOYS
IRON BASE ALLOYS
KINETICS
MANGANESE ALLOYS
METALS
MICROSCOPY
MORPHOLOGY
NONMETALS
NUMERICAL DATA
OPTICAL MICROSCOPY
PROTECTIVE COATINGS
REACTION KINETICS
SCALING
SULFIDATION
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
TERNARY ALLOY SYSTEMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS