Internal-external transition for the oxidation of Fe-Cr-Ni austenitic stainless steels in steam

Journal Article · Tue Aug 01 00:00:00 EDT 1989 · Oxidation of Metals; (USA)

DOI:https://doi.org/10.1007/BF00665267· OSTI ID:6554103

Otsuka, Nobuo; Shida, Yoshiaki; Fujikawa, Hisao ^[1]

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1. Sumitomo Metal Industries, Ltd., Amagasaki Hyogo (Japan)

Several Fe-Cr-Ni austenitic stainless steels (Cr wt.%: 13-25, Ni wt.%: 15) were oxidized in steam for 1,000 hr at 500-900{degree}C. The oxide scales were examined and categorized with respect to the chromium concentration and the grain size of the base metal. Experiments showed three conditions for the critical bulk Cr concentration and the oxidation temperature at which the oxidation behavior changed drastically. Metallographic examination showed that two of these three conditions resulted from the internal-external transition of Cr{sub 2}O{sub 3} either on the metal surface or along the grain boundaries of the base metal.

• OSTI ID: 6554103
• Journal Information: Oxidation of Metals; (USA), Vol. 32:1-2; ISSN 0030-770X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
TERNARY ALLOY SYSTEMS
OXIDATION
AUSTENITIC STEELS
CHROMIUM
DATA ANALYSIS
EXPERIMENTAL DATA
IRON
MEASURING INSTRUMENTS
MEASURING METHODS
NICKEL
STEAM
VERY HIGH TEMPERATURE
ALLOY SYSTEMS
ALLOYS
CHEMICAL REACTIONS
DATA
ELEMENTS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
METALS
NUMERICAL DATA
STEELS
TRANSITION ELEMENTS
360105* - Metals & Alloys- Corrosion & Erosion