[3L01-04] Chemical Compatibility of Materials 1

[3L04] Compatibility test of tritium permeation barrier coatings with pressurized water

*Takumi Chikada¹, Motoki Nakajima², Akiyoshi Suzuki¹, Teppei Otsuka³, Masanori Hara⁴, Takashi Nozawa² (1. Shizuoka Univ., 2. QST, 3. Kindai Univ., 4. Univ. of Toyama)

Keywords:Tritium, Permeation, Coating, Pressurized water, Corrosion

Tritium permeation through structural materials in fusion reactor blankets is a serious issue in most blanket concepts, and tritium permeation barrier technology using coatings has been developed. However, the number of reports addressing the stability of the coating under blanket environments is limited. In this presentation, compatibility of tritium permeation barrier coatings under a water-cooled pebble-bed blanket environment is reported through exposure tests for various coatings to pressurized water.