Corrosion behavior of alloy 800H (Fe-21Cr-32Ni) in supercritical water
- ORNL
- University of Wisconsin, Madison
The effect of testing conditions (temperature, time, and oxygen content) and material's microstructure (the as-received and the grain boundary engineered conditions) on the corrosion behavior of alloy 800H in high-temperature pressurized water was studied using a variety of characterization techniques. Oxidation was observed as the primary corrosion behavior on the samples. Oxide exfoliation was significantly mitigated on the grain boundary engineered samples compared to the as-received ones. The oxide formation, including some 'mushroom-shaped oxidation', is predicted via a combination of thermodynamics and kinetics influenced by the preferential diffusion of specific species using short-cut diffusion paths.
- Research Organization:
- Oak Ridge National Laboratory (ORNL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1023327
- Journal Information:
- Corrosion Science, Journal Name: Corrosion Science Journal Issue: 2 Vol. 53; ISSN 0010-938X
- Country of Publication:
- United States
- Language:
- English
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