Compatibility of ferritic steels with sintered Li/sub 2/O pellets in a flowing-helium environment
The compatibility of ferritic HT-9 alloy and Fe-9Cr-1Mo steel with Li/sub 2/O pellets has been investigated at 823 K (550/sup 0/C) in flowing helium containing 93 or 1 ppM H/sub 2/O and 1 ppM H/sub 2/. The results indicate that the alloy specimens gain weight whereas the Li/sub 2/O pellets lose weight after exposure. There is a net loss in weight of the total reaction couple. Both steels develop an iron-rich outer scale and chromium-rich subscale. The reaction rates in helium containing 93 ppM H/sub 2/O are greater than in helium containing 1 ppM H/sub 2/O. The depth of internal penetration for specimens exposed in helium with 1 ppM H/sub 2/O reaches a constant value after approx. 3.6 Ms. The specimens exposed in helium containing 93 ppM H/sub 2/O show a gradual increase in penetration up to 7.2 Ms. For both moisture contents, the total scale thickness follows a power law and the reaction rates decrease with time. The weight losses for Li/sub 2/O pellets follow a linear law and yield values of 12.2 and 3.8%/year in helium with 93 and 1 ppM H/sub 2/O, respectively.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 5828762
- Report Number(s):
- CONF-830659-5; ON: DE83014816
- Resource Relation:
- Conference: TMS/AIME topical conference on ferritic alloys for use in nuclear energy technologies, Snowbird, UT, USA, 19 Jun 1983; Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALLOY-HT-9
COMPATIBILITY
FERRITIC STEELS
LITHIUM OXIDES
BREEDING BLANKETS
HELIUM
HIGH TEMPERATURE
WATER
ALKALI METAL COMPOUNDS
ALLOYS
CHALCOGENIDES
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
ELEMENTS
FLUIDS
GASES
HYDROGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
LITHIUM COMPOUNDS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
RARE GASES
REACTOR COMPONENTS
STEELS
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