[G] 熱力学・相平衡・状態図

[196] Thermodynamic Investigation of Ni Addition Influence on the Activity of Zr in Fe-Zr Liquid Phase at 1600℃

*YANG Weirong¹、伊藤 あゆみ²、安井 伸太郎^2,3、小林 能直^1,3 (1. 東京工業大学　物質理工学院、2. 東京工業大学　ゼロカーボンエネルギー研究所、3. 東京工業大学　フロンティア材料研究所)

キーワード：Fukushima Daiichi Nuclear Power Station、severe accident、decommissioning、Fuel debris、high temperature thermodynamic、metallic solution

In this study, the activity of Zr in the ternary liquid phase was measured by the chemical equilibrium method with Ag as reference metal. A decrease in Zr activity was found with the addition of Ni.