High-pressure AB2 metal hydrides with low hysteresis

M. Hagström; S. Klyamkin; E. Mescheryakova; P. Lund

doi:10.1023/A:1004757003010

High-pressure AB2 metal hydrides with low hysteresis

M. Hagström, S. Klyamkin, E. Mescheryakova, P. Lund

Lomonosov Moscow State University

Research output: Contribution to journal › Article › Scientific › peer-review

13 Citations (Scopus)

Abstract

The effect of minor substitution for Mn on the basic hydriding properties of Ti_0.95Zr_0.05Cr_1.2Mn_0.7X_0.1 (X = Mn, Fe, Co or V) has been studied at 20 and 60 °C in order to find alloy-hydrogen systems for high-pressure applications in which high capacity, low hysteresis and flat pressure-composition-isotherm (PCI) plateaus are required. Samples have been synthesized by arc melting, and characterized by X-ray diffraction (XRD) and volumetric PCI measurements. Experimental evidence shows that even a small amount of V practically eliminates hysteresis while at the same time the PCI plateau slopes increase. Co-substitution also decreases hysteresis and keeps the PCI plateaus flat, but Fe-substitution does not seem to have any favourable effect on the basic hydriding properties. Possibility to study the relationship between hysteresis effect of high-pressure hydrides and their crystal structure is discussed.

Original language	English
Pages (from-to)	127-131
Number of pages	5
Journal	Journal of Materials Science
Volume	35
Issue number	1
DOIs	https://doi.org/10.1023/A:1004757003010
Publication status	Published - Jan 2000
MoE publication type	A1 Journal article-refereed

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abstract = "The effect of minor substitution for Mn on the basic hydriding properties of Ti0.95Zr0.05Cr1.2Mn0.7X0.1 (X = Mn, Fe, Co or V) has been studied at 20 and 60 °C in order to find alloy-hydrogen systems for high-pressure applications in which high capacity, low hysteresis and flat pressure-composition-isotherm (PCI) plateaus are required. Samples have been synthesized by arc melting, and characterized by X-ray diffraction (XRD) and volumetric PCI measurements. Experimental evidence shows that even a small amount of V practically eliminates hysteresis while at the same time the PCI plateau slopes increase. Co-substitution also decreases hysteresis and keeps the PCI plateaus flat, but Fe-substitution does not seem to have any favourable effect on the basic hydriding properties. Possibility to study the relationship between hysteresis effect of high-pressure hydrides and their crystal structure is discussed.",

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T1 - High-pressure AB2 metal hydrides with low hysteresis

AU - Hagström, M.

AU - Klyamkin, S.

AU - Mescheryakova, E.

AU - Lund, P.

PY - 2000/1

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N2 - The effect of minor substitution for Mn on the basic hydriding properties of Ti0.95Zr0.05Cr1.2Mn0.7X0.1 (X = Mn, Fe, Co or V) has been studied at 20 and 60 °C in order to find alloy-hydrogen systems for high-pressure applications in which high capacity, low hysteresis and flat pressure-composition-isotherm (PCI) plateaus are required. Samples have been synthesized by arc melting, and characterized by X-ray diffraction (XRD) and volumetric PCI measurements. Experimental evidence shows that even a small amount of V practically eliminates hysteresis while at the same time the PCI plateau slopes increase. Co-substitution also decreases hysteresis and keeps the PCI plateaus flat, but Fe-substitution does not seem to have any favourable effect on the basic hydriding properties. Possibility to study the relationship between hysteresis effect of high-pressure hydrides and their crystal structure is discussed.

AB - The effect of minor substitution for Mn on the basic hydriding properties of Ti0.95Zr0.05Cr1.2Mn0.7X0.1 (X = Mn, Fe, Co or V) has been studied at 20 and 60 °C in order to find alloy-hydrogen systems for high-pressure applications in which high capacity, low hysteresis and flat pressure-composition-isotherm (PCI) plateaus are required. Samples have been synthesized by arc melting, and characterized by X-ray diffraction (XRD) and volumetric PCI measurements. Experimental evidence shows that even a small amount of V practically eliminates hysteresis while at the same time the PCI plateau slopes increase. Co-substitution also decreases hysteresis and keeps the PCI plateaus flat, but Fe-substitution does not seem to have any favourable effect on the basic hydriding properties. Possibility to study the relationship between hysteresis effect of high-pressure hydrides and their crystal structure is discussed.

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High-pressure AB2 metal hydrides with low hysteresis

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