Hydrogen permeability of 2.5μm palladium–silver membranes deposited on ceramic supports

2008 ◽  
Vol 325 (1) ◽  
pp. 446-453 ◽  
Author(s):  
Diego Pizzi ◽  
Ryan Worth ◽  
Marco Giacinti Baschetti ◽  
Giulio C. Sarti ◽  
Ken-ichi Noda
Keyword(s):  
Hydrogen Permeability ◽  
Palladium Silver

On the Hydrogen Permeability and Adhesion of TiN/Ti Coatings Produced on Zr–1% Nb Alloy by Vacuum Ion-Plasma Methods

2020 ◽  
Vol 14 (5) ◽  
pp. 929-934
Author(s):  
Zhang Le ◽  
N. N. Nikitenkov ◽  
V. S. Sypchenko ◽  
O. S. Korneva ◽  
E. B. Kashkarov ◽  
...  
Keyword(s):  
Hydrogen Permeability ◽  
Ion Plasma ◽  
Plasma Methods

Hydrogen Permeability and Diffusivity in Nickel and Ni-Base Alloys

CORROSION ◽  
1983 ◽  
Vol 39 (5) ◽  
pp. 174-181 ◽  
Author(s):  
R. M. Latanision ◽  
M. Kurkela
Keyword(s):  
Hydrogen Permeability

scholarly journals Quantitative Evaluations of Hydrogen Diffusivity in V-X (X = Cr, Al, Pd) Alloy Membranes Based on Hydrogen Chemical Potential

Membranes ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 67
Author(s):  
Asuka Suzuki ◽  
Hiroshi Yukawa
Keyword(s):  
Nearest Neighbor ◽  
Chemical Potential ◽  
Hydrogen Permeability ◽  
First Principle ◽  
Hydrogen Diffusivity ◽  
Hydrogen Atoms ◽  
First Principle Calculations ◽  
Blocking Effects ◽  
Pd Alloy ◽  
Quantitative Evaluations

Vanadium (V) has higher hydrogen permeability than Pd-based alloy membranes but exhibits poor resistance to hydrogen-induced embrittlement. The alloy elements are added to reduce hydrogen solubility and prevent hydrogen-induced embrittlement. To enhance hydrogen permeability, the alloy elements which improve hydrogen diffusivity in V are more suitable. In the present study, hydrogen diffusivity in V-Cr, V-Al, and V-Pd alloy membranes was investigated in view of the hydrogen chemical potential and compared with the previously reported results of V-Fe alloy membranes. The additions of Cr and Fe to V improved the mobility of hydrogen atoms. In contrast, those of Al and Pd decreased hydrogen diffusivity. The first principle calculations revealed that the hydrogen atoms cannot occupy the first-nearest neighbor T sites (T1 sites) of Al and Pd in the V crystal lattice. These blocking effects will be a dominant contributor to decreasing hydrogen diffusivity by the additions of Al and Pd. For V-based alloy membranes, Fe and Cr are more suitable alloy elements compared with Al and Pd in view of hydrogen diffusivity.

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