Hydrogen Permeation Through Fluoride Molten Salt Mixed with Ti Powder

摘要

H-2 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 H-2 permeation for 70 hours lower than the H-2 detection limit after the start of experiment. H-2 diffusion behavior in the Flibe+Ti system is analyzed using an unsteady-diffusion equation. The time delay of overall H-2 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 H-2 permeation rates.