Microstructure Evolution of Defect Clusters in Neutron Irradiated MgO・nAl_2O_3

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概要

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• The formation process of defect clusters in MgO・nAl_2O_3 has been studied not only for understanding the mechanism of the nucleation and growth process of defect clusters but also for getting insights into the reason why this material shows radiation resistance. Defect analysis was performed to determine the following sequential change of dislocation loops under irradiation with fission neutrons in Joyo and JMTR; 1/6[111](111)→1/4[110](111)→1/4[110](101)→1/4[110](110)→1/2[110](110). Effective recombinations of interstitials with structural vacancies due to non-stoichiometry, instability of loops formed directly by damage cascades, large nuclei of stable interstitial loops and the failure of loops to unfault are critical factors for high radiation-resistance of this material.neutron irradiationceramicsspinelradiation-resistance

• 東北大学の論文
• 1994-09-16

著者

• NAKAI K.

  Department of Materials Science and Engineering, Ehime University

• Maeda S.

  Department of Electrical Engineering Kumamoto University

• Watanuki Y.

  Department Of Nuclear Engineering Kyushu University

• FUKUMOTO K.

  Department of Plastic and Reconstructive Surgery, The Jikei University School of Medicine

• Kinoshita C.

  Department of Nuclear Engineering, Kyushu University

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