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Fusion Science and Technology Volume 72, 2017 - Issue 4: Selected papers from the Twenty-Second Topical Meeting on the Technology of Fusion Energy—Part 2
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Technical Notes

Hydrogen Permeation Through Fluoride Molten Salt Mixed with Ti Powder

Ryosuke NishiumiKyushu University, Department Advanced Energy Engineering Science, Kasuga-Koen 6-1, Kasuga, Fukuoka816-8580, Japan
,
Satoshi FukadaKyushu University, Department Advanced Energy Engineering Science, Kasuga-Koen 6-1, Kasuga, Fukuoka816-8580, JapanCorrespondence[email protected]
,
Jun YamashitaKyushu University, Department Advanced Energy Engineering Science, Kasuga-Koen 6-1, Kasuga, Fukuoka816-8580, Japan
,
Kazunari KatayamaKyushu University, Department Advanced Energy Engineering Science, Kasuga-Koen 6-1, Kasuga, Fukuoka816-8580, Japan
,
Akio SagaraKyushu University, Department Advanced Energy Engineering Science, Kasuga-Koen 6-1, Kasuga, Fukuoka816-8580, Japan
&
Juro YagiNational Institute for Fusion Science, 322-6, Oroshi-cho, Toki, Gifu509-5202, Japan
Pages 747-752 | Received 16 Aug 2016, Accepted 15 May 2017, Published online: 16 Aug 2017
 
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Abstract

H2 permeation behavior in a new molten salt of Flibe mixed with 0.5 wt% Ti powder is experimentally and analytically investigated. Ti powder included in Flibe can suppress H2 permeation for 70 hours lower than the H2 detection limit after the start of experiment. H2 diffusion behavior in the Flibe+Ti system is analyzed using an unsteady-diffusion equation. The time delay of overall H2 diffusion in the Flibe+Ti system is over 200 times larger than that in Flibe. The effective diffusivity and solubility in the Flibe+Ti system are determined from fitting the analytical solution to experimental H2 permeation rates.

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