Hexagonal ZrNiAl alloy and its hydride (deuteride) with the Fe2P-type structure

M. Yoshida; E. Akiba; Y. Shimojo; Y. Morii; F. Izumi

doi:10.1016/0925-8388(95)01713-5

Hexagonal ZrNiAl alloy and its hydride (deuteride) with the Fe₂P-type structure

M. Yoshida, E. Akiba, Y. Shimojo, Y. Morii, F. Izumi

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

14 Citations (Scopus)

Abstract

ZrNiAl alloy was found to absorb hydrogen up to a composition of ZrNiAlH_0.53 in the measurement of a pressure-composition isotherm at 313 K. The structure parameters of the alloy and its hydride (deuteride) were refined by the Rietveld method using X-ray and neutron diffraction data. Both the alloy and deuteride have the Fe₂P-type structure (space group: P62m; a = 6.9152(6) A ̊ and c = 3.4703(4) A ̊ for the alloy; a = 6.7225(7) A ̊ and c = 3.7713(6) A ̊ for the deuteride). Hydrogenation leads to the lattice-contraction of the a axis by 2.8% and the lattice-expansion of the c axis by 8.7%. Neutron Rietveld refinement revealed that deuterium occupies a trigonal-bipyramidal site surrounded by three Zr and two Ni atoms.

Original language	English
Pages (from-to)	755-759
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	231
Issue number	1-2
DOIs	https://doi.org/10.1016/0925-8388(95)01713-5
Publication status	Published - Dec 15 1995
Externally published	Yes

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/0925-8388(95)01713-5

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title = "Hexagonal ZrNiAl alloy and its hydride (deuteride) with the Fe2P-type structure",

abstract = "ZrNiAl alloy was found to absorb hydrogen up to a composition of ZrNiAlH0.53 in the measurement of a pressure-composition isotherm at 313 K. The structure parameters of the alloy and its hydride (deuteride) were refined by the Rietveld method using X-ray and neutron diffraction data. Both the alloy and deuteride have the Fe2P-type structure (space group: P62m; a = 6.9152(6) A ̊ and c = 3.4703(4) A ̊ for the alloy; a = 6.7225(7) A ̊ and c = 3.7713(6) A ̊ for the deuteride). Hydrogenation leads to the lattice-contraction of the a axis by 2.8% and the lattice-expansion of the c axis by 8.7%. Neutron Rietveld refinement revealed that deuterium occupies a trigonal-bipyramidal site surrounded by three Zr and two Ni atoms.",

author = "M. Yoshida and E. Akiba and Y. Shimojo and Y. Morii and F. Izumi",

year = "1995",

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doi = "10.1016/0925-8388(95)01713-5",

language = "English",

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journal = "Journal of Alloys and Compounds",

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TY - JOUR

T1 - Hexagonal ZrNiAl alloy and its hydride (deuteride) with the Fe2P-type structure

AU - Yoshida, M.

AU - Akiba, E.

AU - Shimojo, Y.

AU - Morii, Y.

AU - Izumi, F.

PY - 1995/12/15

Y1 - 1995/12/15

N2 - ZrNiAl alloy was found to absorb hydrogen up to a composition of ZrNiAlH0.53 in the measurement of a pressure-composition isotherm at 313 K. The structure parameters of the alloy and its hydride (deuteride) were refined by the Rietveld method using X-ray and neutron diffraction data. Both the alloy and deuteride have the Fe2P-type structure (space group: P62m; a = 6.9152(6) A ̊ and c = 3.4703(4) A ̊ for the alloy; a = 6.7225(7) A ̊ and c = 3.7713(6) A ̊ for the deuteride). Hydrogenation leads to the lattice-contraction of the a axis by 2.8% and the lattice-expansion of the c axis by 8.7%. Neutron Rietveld refinement revealed that deuterium occupies a trigonal-bipyramidal site surrounded by three Zr and two Ni atoms.

AB - ZrNiAl alloy was found to absorb hydrogen up to a composition of ZrNiAlH0.53 in the measurement of a pressure-composition isotherm at 313 K. The structure parameters of the alloy and its hydride (deuteride) were refined by the Rietveld method using X-ray and neutron diffraction data. Both the alloy and deuteride have the Fe2P-type structure (space group: P62m; a = 6.9152(6) A ̊ and c = 3.4703(4) A ̊ for the alloy; a = 6.7225(7) A ̊ and c = 3.7713(6) A ̊ for the deuteride). Hydrogenation leads to the lattice-contraction of the a axis by 2.8% and the lattice-expansion of the c axis by 8.7%. Neutron Rietveld refinement revealed that deuterium occupies a trigonal-bipyramidal site surrounded by three Zr and two Ni atoms.

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U2 - 10.1016/0925-8388(95)01713-5

DO - 10.1016/0925-8388(95)01713-5

M3 - Article

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SN - 0925-8388

VL - 231

SP - 755

EP - 759

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Hexagonal ZrNiAl alloy and its hydride (deuteride) with the Fe₂P-type structure

Abstract

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