Structural investigation of hydrogen solubility in YyR1-y alloys (R=Tb and Gd)

Y. Nakamura; P. Vajda; O. J. Zogal; E. Akiba

doi:10.1016/S0925-8388(02)01219-7

Structural investigation of hydrogen solubility in Y_yR_1-y alloys (R=Tb and Gd)

Y. Nakamura, P. Vajda, O. J. Zogal, E. Akiba

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

We have studied the structure of hydrogen loaded Y_yTb_1-y alloys, with y=0.2 and 0.9, by X-ray diffraction (XRD) techniques. The room-temperature XRD profiles of Y_0.2Tb_0.8H_x exhibit, in addition to the peaks of the h.c.p. metal lattice, those of the f.c.c. dihydride for all x>0. In the case of Y_0.9Tb_0.1H_x, the f.c.c. peaks show up only for x=0.20, indicating H-solubility for smaller hydrogen concentrations in this alloy. As for the two Y_yGd_1-y (y=0.3 and 0.4) alloys, we observe in both cases precipitation of the dihydride for the smallest H concentrations. These results complement earlier resistivity measurements on the same systems, by presenting the evolution of the respective lattice parameters and their c/a ratios upon hydrogen addition and, in particular, specifying the influence of the metal lattice environment upon the state of the precipitating hydride.

Original language	English
Pages (from-to)	105-108
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	356-357
DOIs	https://doi.org/10.1016/S0925-8388(02)01219-7
Publication status	Published - Aug 11 2003
Externally published	Yes
Event	Proceedings of the Eight International Symposium on Metal Hyd (MH 2002) - Annecy, France Duration: Sept 2 2002 → Sept 6 2002

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/S0925-8388(02)01219-7

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title = "Structural investigation of hydrogen solubility in YyR1-y alloys (R=Tb and Gd)",

abstract = "We have studied the structure of hydrogen loaded YyTb1-y alloys, with y=0.2 and 0.9, by X-ray diffraction (XRD) techniques. The room-temperature XRD profiles of Y0.2Tb0.8Hx exhibit, in addition to the peaks of the h.c.p. metal lattice, those of the f.c.c. dihydride for all x>0. In the case of Y0.9Tb0.1Hx, the f.c.c. peaks show up only for x=0.20, indicating H-solubility for smaller hydrogen concentrations in this alloy. As for the two YyGd1-y (y=0.3 and 0.4) alloys, we observe in both cases precipitation of the dihydride for the smallest H concentrations. These results complement earlier resistivity measurements on the same systems, by presenting the evolution of the respective lattice parameters and their c/a ratios upon hydrogen addition and, in particular, specifying the influence of the metal lattice environment upon the state of the precipitating hydride.",

author = "Y. Nakamura and P. Vajda and Zogal, {O. J.} and E. Akiba",

year = "2003",

month = aug,

day = "11",

doi = "10.1016/S0925-8388(02)01219-7",

language = "English",

volume = "356-357",

pages = "105--108",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

note = "Proceedings of the Eight International Symposium on Metal Hyd (MH 2002) ; Conference date: 02-09-2002 Through 06-09-2002",

}

TY - JOUR

T1 - Structural investigation of hydrogen solubility in YyR1-y alloys (R=Tb and Gd)

AU - Nakamura, Y.

AU - Vajda, P.

AU - Zogal, O. J.

AU - Akiba, E.

PY - 2003/8/11

Y1 - 2003/8/11

N2 - We have studied the structure of hydrogen loaded YyTb1-y alloys, with y=0.2 and 0.9, by X-ray diffraction (XRD) techniques. The room-temperature XRD profiles of Y0.2Tb0.8Hx exhibit, in addition to the peaks of the h.c.p. metal lattice, those of the f.c.c. dihydride for all x>0. In the case of Y0.9Tb0.1Hx, the f.c.c. peaks show up only for x=0.20, indicating H-solubility for smaller hydrogen concentrations in this alloy. As for the two YyGd1-y (y=0.3 and 0.4) alloys, we observe in both cases precipitation of the dihydride for the smallest H concentrations. These results complement earlier resistivity measurements on the same systems, by presenting the evolution of the respective lattice parameters and their c/a ratios upon hydrogen addition and, in particular, specifying the influence of the metal lattice environment upon the state of the precipitating hydride.

AB - We have studied the structure of hydrogen loaded YyTb1-y alloys, with y=0.2 and 0.9, by X-ray diffraction (XRD) techniques. The room-temperature XRD profiles of Y0.2Tb0.8Hx exhibit, in addition to the peaks of the h.c.p. metal lattice, those of the f.c.c. dihydride for all x>0. In the case of Y0.9Tb0.1Hx, the f.c.c. peaks show up only for x=0.20, indicating H-solubility for smaller hydrogen concentrations in this alloy. As for the two YyGd1-y (y=0.3 and 0.4) alloys, we observe in both cases precipitation of the dihydride for the smallest H concentrations. These results complement earlier resistivity measurements on the same systems, by presenting the evolution of the respective lattice parameters and their c/a ratios upon hydrogen addition and, in particular, specifying the influence of the metal lattice environment upon the state of the precipitating hydride.

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U2 - 10.1016/S0925-8388(02)01219-7

DO - 10.1016/S0925-8388(02)01219-7

M3 - Conference article

AN - SCOPUS:0041562697

SN - 0925-8388

VL - 356-357

SP - 105

EP - 108

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

T2 - Proceedings of the Eight International Symposium on Metal Hyd (MH 2002)

Y2 - 2 September 2002 through 6 September 2002

ER -

Structural investigation of hydrogen solubility in Y_yR_1-y alloys (R=Tb and Gd)

Abstract

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