Compatibility of strontium-90 fluoride with containment materials at elevated temperatures
The use of /sup 90/SrF/sub 2/ as a heat-source fuel requires that the /sup 90/Sr be adequately contained during heat-source service. A program for determining the compatibility of /sup 90/SrF/sub 2/ with containment materials at heat-source operating temperatures is described. These compatibility studies included: initial and supplemental screening tests; WESF /sup 90/SrF/sub 2/ capsule demonstration tests; thermal gradient test; and long-term tests. TZM, Haynes Alloy 25, and Hastelloy C-276 were the three materitals selected for evaluation at 600/sup 0/, 800/sup 0/ and 1000/sup 0/C for periods up to 30,000 h. Results showed that all three alloys suffered substantial attack when exposed to the /sup 90/SrF/sub 2/, although the TZM was more resistant to attack than the Hastelloy C-276 and Haynes Alloy 25. The latter two alloys appeared to provide about equal resistance to fluoride attack for exposures longer than about 12,000 h. Attack of the alloys tested by the /sup 90/SrF/sub 2/ was due primarily to impurities.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, WA (United States)
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 6258105
- Report Number(s):
- PNL-3833; ON: DE82000710
- Country of Publication:
- United States
- Language:
- English
Similar Records
Containment of strontium fluoride at 800/sup 0/C: supplemental screening tests. [WESF-/sup 90/SrO/sub 2/]
Quarterly report on the strontium heat source development program, advanced systems and materials production division for July-September 1978.
Related Subjects
36 MATERIALS SCIENCE
ALLOY-TZM
CORROSION
CAPSULES
COMPATIBILITY
HASTELLOY C
HAYNES 25 ALLOY
RADIOISOTOPE HEAT SOURCES
STRONTIUM 90
ENCAPSULATION
STRONTIUM FLUORIDES
CORROSIVE EFFECTS
ALKALINE EARTH ISOTOPES
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
COBALT ALLOYS
COBALT BASE ALLOYS
CONTAINERS
EVEN-EVEN NUCLEI
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HASTELLOYS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HEAT SOURCES
INTERMEDIATE MASS NUCLEI
IRON ALLOYS
ISOTOPES
MATERIALS
MOLYBDENUM ALLOYS
MOLYBDENUM BASE ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NUCLEI
RADIOISOTOPES
STRONTIUM COMPOUNDS
STRONTIUM ISOTOPES
TITANIUM ALLOYS
TUNGSTEN ALLOYS
YEARS LIVING RADIOISOTOPES
ZIRCONIUM ALLOYS
NESDPS Office of Nuclear Energy Space and Defense Power Systems
070300* - Isotopic Power Supplies
360105 - Metals & Alloys- Corrosion & Erosion