[2E19-23] Nitride Fuel Cycle

[2E21] R&D on Nitride Fuel Cycle for MA Transmutation to Enhance Safety and Economy

(11) Solid-liquid Phase Transition Temperature: Dependence on Chemical Composition and N₂ Partial Pressure

*Tatsumi Arima¹, Tohma Iwasa², Seiya Takaki² (1. Kyushu Univ., 2. JAEA)

Keywords:nitride fuel, laser heating, melting point, nitrogen partial pressure

For solid-liquid phase transition temperatures of nitrides, the dependence on chemical composition and N₂ partial pressure was evaluated using the non-contact laser heating method. The nitride samples were (Dy,Zr)N and (Er,Zr)N pellets where Dy and Er were a surrogate for minor actinides.