Effect of some ternary additions on the sulfidation of Ni-Mo alloys

Journal Article · Thu Feb 01 04:00:00 EST 1990 · Oxidation of Metals; (USA)

DOI:https://doi.org/10.1007/BF00665672· OSTI ID:6554107

Chen, M F; Douglass, D L ^[1]

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1. Univ. of California, Los Angeles (USA)

Five ternary additions, Cr, Ti, Mn, V, and Al were studied at equi-atomic-percent levels (17 a/o) for their effect on the sulfidation behavior of Ni-19a/o Mo (28-30 w/o) over the range of 600-800{degree}C in 0.01 atm S{sub 2}. Al was by far the most effective addition. A linear decrease in log k{sub p} vs. Al was observed up to 7.5w/o Al, beyond which no further change was observed. All alloys followed the parabolic rate law. Complex scales were formed on all alloys, consisting of an outer layer of Nis{sub 1+x} and complex inner layers which depended upon alloy composition. MoS{sub 2} was a constituent of the inner scales except for the alloys with Al. A ternary sulfide, Al{sub 0.55}Mo{sub 2}S{sub 4} and Al{sub 2}S{sub 3} were observed.

• OSTI ID: 6554107
• 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
ALUMINIUM
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM
DATA
DATA ANALYSIS
ELEMENTS
EXPERIMENTAL DATA
HIGH TEMPERATURE
IMPURITIES
INFORMATION
MANGANESE
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
MOLYBDENUM
MOLYBDENUM COMPOUNDS
MOLYBDENUM SULFIDES
NICKEL ALLOYS
NICKEL BASE ALLOYS
NUMERICAL DATA
REFRACTORY METAL COMPOUNDS
SULFIDATION
SULFIDES
SULFUR COMPOUNDS
TITANIUM
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VANADIUM