Hydrogen transport through V–Pd alloy membranes: Hydrogen solution, permeation and diffusion

Alimov, V.N.; Busnyuk, A.O.; Notkin, M. E.; Peredistov, E.Yu.; Livshits, A. I.

doi:10.1016/j.memsci.2015.01.058

Cited by 47 publications

(13 citation statements)

References 27 publications

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“…This generates mainly two types of notable hydrogen permeable alloys. The first type comprises V 14–20 , Nb 21–24 and Ta 25 solid solution alloys formed by selective alloying for group V metals with the aim to reduce hydrogen solubility. Such alloys exhibit an obviously improved HE resistance as compared to the pure counterpart, and also show distinctly higher hydrogen permeability than the leading Pd-based alloys.…”

Section: Introductionmentioning

confidence: 99%

Design of (Nb, Mo)40Ti30Ni30 alloy membranes for combined enhancement of hydrogen permeability and embrittlement resistance

Xiao

Liu

et al. 2017

Sci Rep

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The effect of substitution of Nb by Mo in Nb40Ti30Ni30 was investigated with respect to microstructural features and hydrogen dissolution, diffusion and permeation. As-cast Nb40−xMoxTi30Ni30 (x = 0, 5, 10) alloys consist of primary bcc-Nb phase and binary eutectic (bcc-Nb + B2-TiNi). The substitution of Nb by Mo reduces the hydrogen solubility in alloys, but may increase (x = 5) or decrease (x = 10) the apparent hydrogen diffusivity and permeability. As-cast Nb35Mo5Ti30Ni30 exhibits a combined enhancement of hydrogen permeability and embrittlement resistance as compared to Nb40Ti30Ni30. This work confirms that Mo is a desirable alloying element in Nb that can contribute to a reduction in hydrogen absorption and an increase in intrinsic hydrogen diffusion, thus improving embrittlement resistance with minimal permeability penalty.

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Section: Introductionmentioning

confidence: 99%

Design of (Nb, Mo)40Ti30Ni30 alloy membranes for combined enhancement of hydrogen permeability and embrittlement resistance

Xiao

Liu

et al. 2017

Sci Rep

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“…In order to control the PCT curves, the alloy elements with lower affinity to hydrogen than base metal need to be added. V-based solid solution alloy membranes such as V-Fe, V-Cr, V-Al, and V-Pd alloy membranes are widely investigated [ 12 , 13 , 14 , 15 ]. It is suitable that the alloy elements not only reduce hydrogen solubility but also enhance hydrogen diffusivity.…”

Section: Discussionmentioning

confidence: 99%

“…Among group 5 metals, V forms solid solutions with many elements in wide ranges of alloy compositions. Therefore, various V-based solid solution alloys such as V-Ni [ 10 , 11 , 12 ], V-Cr [ 12 ], V-Al [ 12 , 13 ], V-Pd [ 14 ], V-Fe [ 15 ], V-W [ 16 ], and V-W-Mo [ 17 ] alloys have been investigated. It is more suitable that the alloy elements enhance hydrogen diffusivity in V. It is reported that the addition of Fe to V enhances hydrogen diffusivity below approximately 700 K [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

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

Suzuki

Yukawa

2021

Membranes

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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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“…Given the relevance of hydrogen storage and transport for a variety of applications, it is not surprising that hydrogen transport in Fe and steel alloys has been recently examined by several investigators [26][27][28][29][30][31]. However studies on Fe-based alloys have been limited thus far.…”

Section: Introductionmentioning

confidence: 99%

First-principles localized cluster expansion study of the kinetics of hydrogen diffusion in homogeneous and heterogeneous Fe-Cr alloys

et al. 2019

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Metal alloys have a wide range of technological applications, from structural materials to catalysts. In many situations the transport of hydrogen, whether intentionally for hydrogen storage and fuel cell applications or unintentionally in the case of tritium uptake in nuclear materials, is an important concern. Fe-Cr binary alloys, in particular, may be viewed as a simple model system to represent ferritic steels used in nuclear energy systems and, more generally, as a model binary alloy for examining the role of alloying elements on transport. In this work, we used density functional theory, cluster expansion, and kinetic Monte Carlo to study hydrogen kinetics in Fe-Cr alloys. In random homogenenous alloys, we observed that hydrogen diffusivity first decreased with increasing Cr content and then increased to its levels in pure Cr. Furthermore, the effects of heterogeneity, as might be induced by irradiation, were explored and it was concluded that local structural heterogeneities for the same overall Cr concentration may significantly affect the hydrogen diffusivity. The effect was attributed to the relative binding energy of hydrogen in different metals and this understanding was then utilized to predict hydrogen transport behavior in different element-segregated grain/grain boundary combinations and thus identify solute/solvent alloys where hydrogen transport might be either hindered or

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Hydrogen transport through V–Pd alloy membranes: Hydrogen solution, permeation and diffusion

Cited by 47 publications

References 27 publications

Design of (Nb, Mo)40Ti30Ni30 alloy membranes for combined enhancement of hydrogen permeability and embrittlement resistance

Design of (Nb, Mo)40Ti30Ni30 alloy membranes for combined enhancement of hydrogen permeability and embrittlement resistance

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

First-principles localized cluster expansion study of the kinetics of hydrogen diffusion in homogeneous and heterogeneous Fe-Cr alloys

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