Sulfidation kinetics and mechanism of some Ni-Mo-Al and Ni-Al alloys over the temperature range 600-800 degree C

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Oxidation of Metals; (USA)

DOI:https://doi.org/10.1007/BF00666807· OSTI ID:6537093

Chen, M F; Douglass, D L ^[1]; Gesmundo, F ^[2]

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1. Univ. of California, Los Angeles (USA)
2. Universita de Genova (Italy)

The sulfidation behavior of five Ni-Mo-Al ternary alloys and two Ni-Al binary alloys was studied over the temperature range 600-800{degree}C in sulfur vapor of 10{sup {minus}2} atm. The effect of sulfur pressure was also investigated at P{sub S{sub 2}} = 10{sup {minus}2} and 10{sup {minus}4} atm. using two Ni-Mo-Al alloys. The sulfidation of all Ni-Mo-Al and Ni-Al alloys followed the parabolic rate law. The sulfidation rate decreased with increasing Al content for a given Mo content for Ni-Mo-Al alloys. Two binary alloys, Ni-13.5Al and Ni-31Al, sulfidized at comparable rates to Ni-30Mo-7.5Al, which has excellent sulfidation resistance.

• OSTI ID: 6537093
• Journal Information: Oxidation of Metals; (USA), Journal Name: Oxidation of Metals; (USA) Vol. 33:5-6; ISSN 0030-770X; ISSN OXMEA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOY SYSTEMS
ALUMINIUM
BINARY ALLOY SYSTEMS
CHEMICAL REACTIONS
DATA
DATA ANALYSIS
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
MOLYBDENUM
NICKEL
NUMERICAL DATA
SULFIDATION
TERNARY ALLOY SYSTEMS
TRANSITION ELEMENTS
VERY HIGH TEMPERATURE