Tritium Permeation and Related Studies on Barrier Treated 316 Stainless Steel

Efficient hydrogen and deuterium permeation reduction in Al2O3 coatings with enhanced radiation tolerance and corrosion resistance

“…In order to mitigate tritium permeation and LLE corrosion issues, the fusion community relies on coatings as the most promising route available. Ideally, oxide coatings should tackle LLE corrosion and achieve a tritium permeation reduction factor (PRF) as high as 1000 in the gas phase [7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

Microstructural Examination and Deuterium Permeation Testing of Advanced Coatings for Tritium Service

“…J = A*D*L/s*(p 1 -p 2 ) 1 or when p 2 is negligibly small as is the case for these tests: J = A*D*L/s*p 1 2 In addition, the steady state pressure rise allows calculation of D. D = s 2 / (6t l ) 3 In eq. 1-3, J is the steady state flux determined from the pressure rise and the calculated expansion volume, D the diffusivity, L the solubility, s is the sample thickness, t l is the time lag determined from the data, p 1 and p 2 are the upstream (entrance side pressure) and downstream (exit side pressure) pressures, A is the sample area, and the product D*L is the permeability (P) [1,2,3]…”

Hydrogen flux through the heat transfer tube wall in the steam generator of Monju

“…They relate to the surface conditions of metallic materials, impurities, and corrosion products. Some studies have showed that oxide layers can decrease the hydrogen permeation rate [8][9][10]. the reactor vessel to the IHX where heat is transferred from the primary sodium system to the secondary sodium system.…”