[1M01-03] Cesium Behavior, Hydrogen Generation

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)

[1M03] The reaction between cesium hydroxide and stainless steel oxidation products in a steam environment at 573K-773K

*XIN TAN¹, Tatsuya Suzuki¹, Kenta Murakami² (1. Nagaoka Univ. of Tech., 2. UTokyo)

Keywords:

Cesium hydroxide,Metal oxides,Hygroscopicity,High temperature steam

This study investigates the reactions between cesium hydroxide (CsOH) and stainless steel oxidation products, magnetite (Fe₃O₄) and chromia (Cr₂O₃) in argon and argon-steam environments at 573K-773K. CsOH·H₂O and Fe₃O₄ or Cr₂O₃ powders were mixed and formed into cylindrical pellets, then pellets were heated under specified conditions. Post-test analyses included weight change, elemental distribution, and crystal phases. Results showed that the reactions between CsOH and Fe₃O₄ produced identical phases regardless of temperature and atmosphere, with the highest reaction rate around 673K and less hygroscopicity compared to CsOH. In contrast, reactions between cesium hydroxide and Cr₂O₃ resulted in similar appearances across different conditions and still exhibited high hygroscopicity.