Experimental Determination of Hydrogen Isotope Transport Parameters in Vanadium
Marta Malo,
Igor Peñalva,
Jon Azkurreta,
Belit Garcinuño,
Hao-Dong Liu,
David Rapisarda,
Hai-Shan Zhou,
Guang-Nan Luo
Affiliations
Marta Malo
National Fusion Laboratory (CIEMAT), Avenida Complutense 40, 28040 Madrid, Spain
Igor Peñalva
Department Nuclear Engineering & Fluid Mechanics, Faculty of Engineering, University of the Basque Country (UPV/EHU), Plaza Ingeniero Torres Quevedo, 1, 48013 Bilbao, Spain
Jon Azkurreta
Department Nuclear Engineering & Fluid Mechanics, Faculty of Engineering, University of the Basque Country (UPV/EHU), Plaza Ingeniero Torres Quevedo, 1, 48013 Bilbao, Spain
Belit Garcinuño
National Fusion Laboratory (CIEMAT), Avenida Complutense 40, 28040 Madrid, Spain
Hao-Dong Liu
Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
David Rapisarda
National Fusion Laboratory (CIEMAT), Avenida Complutense 40, 28040 Madrid, Spain
Hai-Shan Zhou
Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
Guang-Nan Luo
Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
Deuterium permeation through vanadium membranes in a wide range of pressures and the temperature range ~250–550 °C was experimentally investigated. Measurements on the same material were carried out in three laboratories with different features for an extended characterization and for cross-check validation. A unified equation for deuterium permeability in pure vanadium (99%) was provided as Φ=1.27×10−4·e−8667/T mol m−1 s−1 Pa−0.5, which represents a significant progress for the characterization of the transport properties in this material, given the spread of data, which can currently be found in the literature. Adsorption and recombination rate constants were also measured for hydrogen and deuterium at low pressure for the same range of temperatures. Finally, the influence of the surface roughness was examined by measuring samples with different surface finish.
