[3O01-05] Fusion Reactor Materials (SiC, Coating Material, Molten Salt)

[3O03] Lithium-lead compatibility of tritium permeation barrier coatings fabricated by a liquid phase method and their deuterium permeation behavior after lithium-lead exposure

*Moeki Matsunaga¹, Seira Horikoshi¹, Jumpei Mochizuki¹, Hikari Fujita², Yoshimitsu Hishinuma³, Kanetsugu Isobe⁴, Takumi Hayashi⁴, Yasuhisa Oya¹, Takayuki Terai², Takumi Chikada¹ (1. Shizuoka Univ., 2. Univ. of Tokyo, 3. NIFS, 4. QST)

Keywords:Lithium-lead, Corrosion, Tritium, Permeation, Ceramic coating

Er₂O₃, Y₂O₃ and ZrO₂ coatings were fabricated on reduced activation ferritic/martensitic steel F82H substrates by metal organic decomposition which is a promising coating technique for plant-scale fabrication with a large reduction of hydrogen isotope permeation. Static immersion tests for the coatings in liquid lithium-lead at 400-600 ºC for 100-500 h and gas-driven deuterium permeation measurements at 300-600 ºC for the immersed samples were carried out to investigate lithium-lead compatibility.