Hydrogen absorbing-desorbing properties and crystal structure of the ZrTiNiMnV AB2 Laves phase alloys

M. Yoshida, E. Akiba

Research output: Contribution to journalArticle

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Abstract

The effect of the substitution of Ti for the Zr (A) site and V for the Mn (B) site of ZrNi1.3Mn0.7 on the hydrogen absorbing-desorbing properties and crystal structure was studied by measuring pressure-composition (PC) isotherms at 313 K and by X-ray powder diffraction measurements. There exist three phases, the C14 and C15 Laves phases and the BCC solid solution phase in twelve alloys studied (Zr1-xTixNi1.3Mn0.7-yVy, x = 0, 0.1, 0.2, 0.5; y = 0, 0.1, 0.2, 0.4, 0.7). The lattice parameter of the alloys containing the C15 Laves phase decreased as Ti (A-site) content was increased; contrarily it increased as V (B-site) content was increased. The PC isotherms of the alloys with the C15 Laves phase indicated that the equilibrium plateau pressure increased with increasing Ti content, but decreased with increasing V content. The hysteresis observed in the PC isotherm was reduced by substitution of Ti and V in the A and B sites, respectively.

Original languageEnglish
Pages (from-to)121-126
Number of pages6
JournalJournal of Alloys and Compounds
Volume224
Issue number1
DOIs
Publication statusPublished - Jun 15 1995

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Hydrogen
Crystal structure
Isotherms
Substitution reactions
Chemical analysis
X ray powder diffraction
Lattice constants
Hysteresis
Solid solutions

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Hydrogen absorbing-desorbing properties and crystal structure of the ZrTiNiMnV AB2 Laves phase alloys. / Yoshida, M.; Akiba, E.

In: Journal of Alloys and Compounds, Vol. 224, No. 1, 15.06.1995, p. 121-126.

Research output: Contribution to journalArticle

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AB - The effect of the substitution of Ti for the Zr (A) site and V for the Mn (B) site of ZrNi1.3Mn0.7 on the hydrogen absorbing-desorbing properties and crystal structure was studied by measuring pressure-composition (PC) isotherms at 313 K and by X-ray powder diffraction measurements. There exist three phases, the C14 and C15 Laves phases and the BCC solid solution phase in twelve alloys studied (Zr1-xTixNi1.3Mn0.7-yVy, x = 0, 0.1, 0.2, 0.5; y = 0, 0.1, 0.2, 0.4, 0.7). The lattice parameter of the alloys containing the C15 Laves phase decreased as Ti (A-site) content was increased; contrarily it increased as V (B-site) content was increased. The PC isotherms of the alloys with the C15 Laves phase indicated that the equilibrium plateau pressure increased with increasing Ti content, but decreased with increasing V content. The hysteresis observed in the PC isotherm was reduced by substitution of Ti and V in the A and B sites, respectively.

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