Effect of Neutron Irradiation on Electromotive Force of Oxygen Sensor Using Zirconia Solid Electrolyte

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Other Title
  • 363. ジルコニア固体電解質を用いた酸素センサの起電力に及ぼす中性子照射効果

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The purpose of this study is to develop oxygen sensor which can measure the oxygen potential of the fuel in a nuclear reactor. The oxygen sensor with CaO stabilized zirconia solid electrolyte has been specially designed in order to prolong its life time. Electromotive force (EMF) of solid galvanic cell Ni/NiO |ZrO2-CaO|Fe/FeO was measured in both the outpile tests and the in-situ tests using Japan Material Testing Reactor (JMTR), and the characteristics of EMF was discussed.<BR>In the out-pile test, it was found that the EMF was almost equal to the theoretical values at temperatures ranging from 700 to 1, 000°C, and the life span of the sensor was very long up to 980h at 800°C. In the in-situ test, it was found that the EMF showed almost the reliable values up to 300h (neutron fluence (E>1 MeV) 1.5×1023n/mm2), at temperatures from 700 to 900°C. The imprecision of the EMF was found to be within 6% of the theoretical values up to 1, 650h irradiation time (neutron fluence (E>1MeV) 8.O×1023n/m-2) at 800°C, The oxygen sensors were found to be applicable for the oxygen potential measurement of the fuels in a reactor.

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Details 詳細情報について

  • CRID
    1390282680163204480
  • NII Article ID
    130003935874
  • DOI
    10.3327/taesj2002.1.202
  • COI
    1:CAS:528:DC%2BD38XmvFWrt70%3D
  • ISSN
    21862931
    13472879
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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