A comprehensive investigation of the sulfidation behavior of binary Co-Mo alloys

Journal Article · Fri Jun 01 04:00:00 EDT 1990 · Oxidation of Metals; (USA)

DOI:https://doi.org/10.1007/BF00666808· OSTI ID:6794490

Gleeson, B; Douglass, D L ^[1]; Gesmundo, F ^[2]

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

The sulfidation behavior of Co-Mo alloys containing up to 40 wt.% Mo was studied over the temperature range 600-900{degree}C in both 10{sup {minus}2} and 10{sup {minus}4} atm. sulfur vapor. All of the alloys were two-phase, with the alloys containing up to 30Mo consisting of Co{sub 3}Mo plus solid-solution Co, and the Co-40Mo alloy consisting of the two intermetallic compounds, Co{sub 3}Mo and Co{sub 7}Mo{sub 6}. The sulfide scales which formed were duplex, with an outer layer of cobalt sulfide and a complex, heterophasic inner layer whose phases were both composition- and temperature-dependent. The parabolic rate constant for the sulfidation kinetics decreased with increasing Mo content at all temperatures investigated.

• OSTI ID: 6794490
• Journal Information: Oxidation of Metals; (USA), Journal Name: Oxidation of Metals; (USA) Journal Issue: 5-6 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
ALLOYS
BINARY ALLOY SYSTEMS
CHEMICAL REACTIONS
COBALT ALLOYS
COBALT BASE ALLOYS
DATA
DATA ANALYSIS
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
MOLYBDENUM
NUMERICAL DATA
SULFIDATION
TRANSITION ELEMENTS
VERY HIGH TEMPERATURE