[2E14-18] シビアアクシデント・セシウム挙動評価

[2E14] シビアアクシデント条件におけるモリブデンの酸化及び蒸発挙動

*劉 家占¹、中島 邦久¹、三輪 周平¹、唐澤 英年¹、逢坂 正彦¹ (1. 日本原子力研究開発機構)

キーワード：シビアアクシデント、モリブデン、酸化、蒸発

To construct a precise Mo release model in a severe accident, oxidation and evaporation behaviors of metallic Mo powders were investigated by the thermogravimetric analysis technique. The experimental results showed that oxidation and evaporation rates of Mo were influenced by oxygen diffusion rates in the gas phase and the solid MoO₂ layer formed on the surface of Mo powders. Mechanism of these diffusions will be discussed.