[3E03-09] Fundamental Properties of Fuel Debris Material 2

[3E04] Research and human resource development for analysis of fuel debris and decommissioning technology of Fukushima Daiichi nuclear power plants

(15)Basic physical property evaluation of UO₂-CaO solid solution

*Yu Oi¹, Yuji Ohishi¹, Hiroaki Muta¹ (1. Osaka Univ.)

Keywords:fuel debris, MCCI products, UO2

UO2-CaO solid solution phase may be generated in MCCI products. Therefore, UO2-CaO solid solution bulk sample was prepared, and the influence of the solid solution of CaO on the thermal and mechanical properties of UO2 was evaluated by thermal diffusivity measurement by laser flash method and Vickers hardness test.