[3D01-05] MOX Fuels for Fast Reactor

[3D01] Science-based Integrated Models for MOX Properties

(1)Relation among lattice constant, coefficient of thermal expansion, mechanical properties and heat capacity

*Shun Hirooka¹, Masato Kato¹, Masatoshi Akashi¹, Kyoichi Morimoto¹, Taku Matsumoto¹ (1. Japan Atomic Energy Agency)

Keywords:MOX, lattice parameter, thermal expansion, mechanical property, heat capacity

Sound speed of MOX was measured and the mechanical properties were evaluated. Since MOX properties can be explained with lattice vibration, the relation among previously-obtained lattice parameter and thermal expansion and newly-obtained mechanical properties was evaluated by Debye model. Then, heat capacity at constant volume and the dilatational term were calculated with the evaluated properties. Thus, the relation among these properties was well organized with wide ranges of parameters.