Hydrogen absorption in ANiAl (A ≡ Zr, Y, U)

I. Jacob; Z. Hadari; J. J. Reilly

doi:10.1016/0022-5088(84)90366-7

Hydrogen absorption in ANiAl (A ≡ Zr, Y, U)

I. Jacob, Z. Hadari, J. J. Reilly

Unit of Nuclear Engineering

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

29 Scopus citations

Abstract

The hydrogen or deuterium absorption capacities of the Fe₂P-type hexagonal compounds ZrNiAl, YNiAl and UNiAl were measured at pressures of approximately 70 atm and room temperature. The maximum capacities of these compounds were found to be 0.7 H atoms (formula unit)^-1, 1.5 H atoms (formula unit)^-1 and 2.5 H atoms (formula unit)^-1 respectively. Desorption isotherms obtained at several temperatures for the UNiAl-H₂ system revealed the existence of at least two hydride phases. Their heats of formation were estimated to be -63.6 kJ (mol H₂)^-1 and -46.5 kJ (mol H₂)^-1. The phase limits of the hydride phases in UNiAlH_x seem to coincide approximately with the hydrogen capacities of ZrNiAl and YNiAl. The hydrogen absorption of the intermetallic compounds investigated is examined with respect to their crystal structures and the available interstitial sites.

Original language	English
Pages (from-to)	123-127
Number of pages	5
Journal	Journal of the Less-Common Metals
Volume	103
Issue number	1
DOIs	https://doi.org/10.1016/0022-5088(84)90366-7
State	Published - 1 Nov 1984

ASJC Scopus subject areas

General Engineering

Access to Document

10.1016/0022-5088(84)90366-7

Cite this

@article{f6e609715c494e04b7b967931c2701dc,

title = "Hydrogen absorption in ANiAl (A ≡ Zr, Y, U)",

abstract = "The hydrogen or deuterium absorption capacities of the Fe2P-type hexagonal compounds ZrNiAl, YNiAl and UNiAl were measured at pressures of approximately 70 atm and room temperature. The maximum capacities of these compounds were found to be 0.7 H atoms (formula unit)-1, 1.5 H atoms (formula unit)-1 and 2.5 H atoms (formula unit)-1 respectively. Desorption isotherms obtained at several temperatures for the UNiAl-H2 system revealed the existence of at least two hydride phases. Their heats of formation were estimated to be -63.6 kJ (mol H2)-1 and -46.5 kJ (mol H2)-1. The phase limits of the hydride phases in UNiAlHx seem to coincide approximately with the hydrogen capacities of ZrNiAl and YNiAl. The hydrogen absorption of the intermetallic compounds investigated is examined with respect to their crystal structures and the available interstitial sites.",

author = "I. Jacob and Z. Hadari and Reilly, {J. J.}",

year = "1984",

month = nov,

day = "1",

doi = "10.1016/0022-5088(84)90366-7",

language = "English",

volume = "103",

pages = "123--127",

journal = "Journal of the Less-Common Metals",

issn = "0022-5088",

publisher = "Elsevier B.V.",

number = "1",

}

TY - JOUR

T1 - Hydrogen absorption in ANiAl (A ≡ Zr, Y, U)

AU - Jacob, I.

AU - Hadari, Z.

AU - Reilly, J. J.

PY - 1984/11/1

Y1 - 1984/11/1

N2 - The hydrogen or deuterium absorption capacities of the Fe2P-type hexagonal compounds ZrNiAl, YNiAl and UNiAl were measured at pressures of approximately 70 atm and room temperature. The maximum capacities of these compounds were found to be 0.7 H atoms (formula unit)-1, 1.5 H atoms (formula unit)-1 and 2.5 H atoms (formula unit)-1 respectively. Desorption isotherms obtained at several temperatures for the UNiAl-H2 system revealed the existence of at least two hydride phases. Their heats of formation were estimated to be -63.6 kJ (mol H2)-1 and -46.5 kJ (mol H2)-1. The phase limits of the hydride phases in UNiAlHx seem to coincide approximately with the hydrogen capacities of ZrNiAl and YNiAl. The hydrogen absorption of the intermetallic compounds investigated is examined with respect to their crystal structures and the available interstitial sites.

AB - The hydrogen or deuterium absorption capacities of the Fe2P-type hexagonal compounds ZrNiAl, YNiAl and UNiAl were measured at pressures of approximately 70 atm and room temperature. The maximum capacities of these compounds were found to be 0.7 H atoms (formula unit)-1, 1.5 H atoms (formula unit)-1 and 2.5 H atoms (formula unit)-1 respectively. Desorption isotherms obtained at several temperatures for the UNiAl-H2 system revealed the existence of at least two hydride phases. Their heats of formation were estimated to be -63.6 kJ (mol H2)-1 and -46.5 kJ (mol H2)-1. The phase limits of the hydride phases in UNiAlHx seem to coincide approximately with the hydrogen capacities of ZrNiAl and YNiAl. The hydrogen absorption of the intermetallic compounds investigated is examined with respect to their crystal structures and the available interstitial sites.

UR - http://www.scopus.com/inward/record.url?scp=0021522446&partnerID=8YFLogxK

U2 - 10.1016/0022-5088(84)90366-7

DO - 10.1016/0022-5088(84)90366-7

M3 - Article

AN - SCOPUS:0021522446

SN - 0022-5088

VL - 103

SP - 123

EP - 127

JO - Journal of the Less-Common Metals

JF - Journal of the Less-Common Metals

IS - 1

ER -

Hydrogen absorption in ANiAl (A ≡ Zr, Y, U)

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this