Low cross-section Mo-Nb thermocouples for nuclear application: The state-of-the-art

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Long-term high-temperature measurements in nuclear environments have long posed difficult problems. The tungsten-rhenium alloy thermocouples typically used in such applications undergo large decalibrations resulting from nuclear transmutation of the component materials. An alternative thermocouple, comprising pure molybdenum and niobium thermoelements, is virtually immune to transmutation effects, but is limited in utility by other properties. Thermocouples composed of molybdenum-niobium alloys show promise of significant improvement over the pure-metal combination. The W-Re decalibration problem is detailed and the status of Mo-Nb thermocouple development reviewed, including recent efforts at the Idaho National Engineering Laboratory. 18 refs., 4 figs.

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Pages: (19 p)

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Wilkins, S.C. January 1, 1988.

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  • EG & G Idaho
    Publisher Info: EG and G Idaho, Inc., Idaho Falls, ID (USA)
    Place of Publication: Idaho Falls, Idaho

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Long-term high-temperature measurements in nuclear environments have long posed difficult problems. The tungsten-rhenium alloy thermocouples typically used in such applications undergo large decalibrations resulting from nuclear transmutation of the component materials. An alternative thermocouple, comprising pure molybdenum and niobium thermoelements, is virtually immune to transmutation effects, but is limited in utility by other properties. Thermocouples composed of molybdenum-niobium alloys show promise of significant improvement over the pure-metal combination. The W-Re decalibration problem is detailed and the status of Mo-Nb thermocouple development reviewed, including recent efforts at the Idaho National Engineering Laboratory. 18 refs., 4 figs.

Physical Description

Pages: (19 p)

Notes

NTIS, PC A03/MF A01 - OSTI; GPO Dep.

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  • 5. symposium on space nuclear power systems, Albuquerque, NM (USA), 11-14 Jan 1988

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  • Other: DE90002078
  • Report No.: EGG-M-37087
  • Report No.: CONF-880122--24
  • Grant Number: AC07-76ID01570
  • Office of Scientific & Technical Information Report Number: 5651355
  • Archival Resource Key: ark:/67531/metadc1087345

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  • January 1, 1988

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  • Feb. 10, 2018, 10:06 p.m.

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  • June 1, 2018, 3:46 p.m.

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Wilkins, S.C. Low cross-section Mo-Nb thermocouples for nuclear application: The state-of-the-art, article, January 1, 1988; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc1087345/: accessed July 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.