SEDL / STP / STP1175-EB / STP24002S

High-Temperature Irradiation of Alumina-Base Ceramic Materials in a Water Cooled Fission Reactor

Shikama, T
Associate Professor, Manager of Hot Laboratory, and Professor of the Oarai Branch, Institute for Materials Research, Tohoku University, Oarai, Ibarakiken,

Narui, M
Associate Professor, Manager of Hot Laboratory, and Professor of the Oarai Branch, Institute for Materials Research, Tohoku University, Oarai, Ibarakiken,

Kayano, H
Associate Professor, Manager of Hot Laboratory, and Professor of the Oarai Branch, Institute for Materials Research, Tohoku University, Oarai, Ibarakiken,

Sagawa, T
Researcher of the Oarai Research Establishment, Japan Atomic Energy Research Institute, Oarai, Ibarakiken,

Tanabe, T
Research Group Leader and Senior Researcher of the Tsukuba Branch, National Research Institute for Metals, Ibarakiken,

Fujitsuka, M
Research Group Leader and Senior Researcher of the Tsukuba Branch, National Research Institute for Metals, Ibarakiken,

Pages: 11    Published: Jan 1994

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Abstract

The so-called improved temperature-controlled irradiation was attempted at 1073 K with an electrical heater in a water cooled fission reactor and alumina-magnesia ceramics were irradiated. They were sintered from the highly pure powders without sintering-aid agents. Preliminary results indicated that re-crystallization or re-structuring took place during the high temperature irradiation. The alumina and the magnesia phases appeared in the nearly stoichiometric spinel of MgAl²O⁴ after the irradiation.