High-Temperature Oxidation Study in a Multi-Oxidant Environment Using 18O Tracer
Journal Article
·
· High Temperature Corrosion of Materials
- Abo Akademi University, Turku (Finland)
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
The goal of this study was to use 18O-enriched water to better understand the role of H2O in high-temperature oxidation. Seven model and three commercial M-Cr and M-Cr-Al alloys were studied in air with 10% of H2O at 800 °C for 5 h. Oxygen from water vapor was more reactive than oxygen from the air and 18O enriched at the outermost layers of the formed Cr- and Al-rich oxides. Alloys with Al and/or Ti additions showed signs of internal oxidation but 18O was not enriched inside the alloy in locations with internal oxidation. In conclusion, depending on the alloy Al content, the oxide went from Al oxidation beneath a chromia scale to external alumina scale formation.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Industrial Efficiency & Decarbonization Office (IEDO)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 2538377
- Journal Information:
- High Temperature Corrosion of Materials, Journal Name: High Temperature Corrosion of Materials Journal Issue: 1 Vol. 102; ISSN 2731-8397
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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