The effect of Mo on the high-temperature sulfidation of Ni

Journal Article · Sun Oct 01 04:00:00 EDT 1989 · Oxidation of Metals; (USA)

DOI:https://doi.org/10.1007/BF00664798· OSTI ID:6181913

Chen, M F; Douglass, D L ^[1]

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

The sulfidation behavior of Ni-Mo alloys containing up to 40 wt. % Mo was studied at P{sub S{sub 2}} = 0.01 atm. over the temperature range of 550-800{degree}C. The alloys included two solid solutions (Ni-10Mo and Ni-20Mo), the single-phase intermetallic compound Ni{sub 4}Mo(Ni-29Mo), and two alloys which were two-phase, Ni-30Mo and Ni-40Mo (Ni{sub 4}Mo + Ni{sub 3}Mo). The sulfidation of all alloys followed the parabolic rate law. The decrease in sulfidation rate with increasing Mo was attributed to increasing amounts of the intermetallic compound. The increasing volume fraction of particles decreased the available diffusion area in the inner layer and provided a blocking effect.

• OSTI ID: 6181913
• 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
ALLOY SYSTEMS
ALLOYS
BINARY ALLOY SYSTEMS
CHEMICAL REACTIONS
DATA
DATA ANALYSIS
ELEMENTS
EXPERIMENTAL DATA
HIGH TEMPERATURE
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
MOLYBDENUM
NICKEL ALLOYS
NICKEL BASE ALLOYS
NUMERICAL DATA
SULFIDATION
TRANSITION ELEMENTS