Thermal Conductivities of Zr-based Transuranium Nitride Solid Solutions

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概要

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• In this study, the authors prepared sintered samples of (Zr0.58Pu0.21Am0.21)N, (Zr0.80Pu0.10Am0.10)N, and (Zr0.70Np0.06Pu0.15Am0.075Cm0.015)N solid solutions. The thermal diffusivities and heat capacities of these Zr-based transuranium nitride solid solutions were measured using a laser flash method and drop calorimetry, respectively. Thermal conductivities from 473 to 1,473 K were determined from the measured thermal diffusivity, heat capacity, and bulk density. The thermal conductivities of Zr-based transuranium nitride solid solutions were found to be higher than that of (Pu0.5Am0.5)N due to the high thermal conductivity of ZrN as the principal component, although they were lower than that of ZrN due to the impurifying effect of the transuranium elements. At 873 K, the thermal conductivities of ZrN, (Zr0.58Pu0.21Am0.21)N, (Zr0.80Pu0.10Am0.10)N, (Zr0.70Np0.06Pu0.15Am0.075Cm0.015)N, and (Pu0.5Am0.5)N were 63.9, 15.8, 25.5, 20.6, and 8.9 Wm−1K−1, respectively. In these results, the thermal conductivities of the Zr-based transuranium nitride solid solutions increased with increasing ZrN concentration.

• 2011-03-01

著者

• NISHI Tsuyoshi

  Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency

• TAKANO Masahide

  Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency

• ICHISE Kenichi

  Department of Hot Laboratories and Facilities, Japan Atomic Energy Agency

• AKABORI Mitsuo

  Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency

• ARAI Yasuo

  Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency

• Nishi Tsuyoshi

  Nuclear Science And Engineering Directorate Japan Atomic Energy Agency

• Akabori Mitsuo

  Nuclear Science And Engineering Directorate Japan Atomic Energy Agency

• Ichise Kenichi

  Department Of Hot Laboratories And Facilities Japan Atomic Energy Agency

• Takano Masahide

  Nuclear Science And Engineering Directorate Japan Atomic Energy Agency

• Arai Yasuo

  Nuclear Science And Engineering Directorate Japan Atomic Energy Agency

• Arai Yasuo

  Nuclear Sci. And Engineering Directorate Japan Atomic Energy Agency

関連論文

• Thermal Conductivities of Zr-based Transuranium Nitride Solid Solutions
• Thermal Conductivities of Zr-based Transuranium Nitride Solid Solutions
• NMR Evidence for the 8.5 K Phase Transition in Americium Dioxide
• Thermodynamic properties of neptunium nitride : a first principles study

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