Determination of oxygen self-diffusion coefficient in polycrystalline Li2O by gas-phase analysis.

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概要

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• The self-diffusion coefficients of the oxygen ion in polycrystalline Li<SUB>2</SUB>O were determined in the range of 8741, 129°C by means of the gas-solid isotope exchange technique where the diffusion coefficient was calculated from the concentration variation of the tracer <SUP>18</SUP>O in the diffusion atmosphere with assumption of grain-boundary enhanced diffusion. The determined oxygen self-diffusion coefficient was smaller than the previously reported lithium self-diffusion coefficient. The relative diffusivities of the cation and the anion were discussed with respect to the sublattice structure of the antifluorite cubic Li<SUB>2</SUB>O in comparison with the fluorite cubic crystals.

• 一般社団法人 日本原子力学会の論文

著者

• Oishi Yasumichi

  Department Of Nuclear Engineering Faculty Of Engineering Kyushu University

• Ando Ken

  Department of Nuclear Engineering, Kyushu University

• YONEDA Takehiko

  Department of Nuclear Engineering, Kyushu University

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