Hydrogen absorbing properties and structures of Ti-Cr-Mo alloys

K. Kubo, H. Itoh, T. Takahashi, T. Ebisawa, T. Kabutomori, Y. Nakamura, E. Akiba

研究成果: Contribution to journalConference article査読

40 被引用数 (Scopus)

抄録

Ti-Cr-Mo alloys show different hydrogenation properties to Ti-Cr-V and Ti-Mn-V hydrogen absorbing alloys with b.c.c. structure. Ti-Cr-Mo alloys have a smaller solid solution range (<0.5 wt.%) than Ti-Cr-V (<1.3 wt.%). In order to understand this difference, crystal structure and hydrogenation behaviors were investigated by X-ray diffraction and pressure-composition isotherms (P-C-T) measurements. Most of the alloys investigated were single bcc phase. The relation of the plateau pressure vs. lattice volume of Ti-Cr-Mo alloys was opposite to Ti-Cr-V and many of conventional intermetallic alloys. The new parameter, the radius of tetrahedral hydrogen site, is introduced. This new parameter gives a linear relationship with the plateau pressure for both Ti-Cr-Mo and Ti-Cr-V alloys. Hydrogen capacity of Ti-Cr-Mo and Ti-Cr-V are the same in a hydrogen to metal ratio basis. Slight addition of V to Ti-Cr-Mo alloys leads to dramatic increase of solid solution range.

本文言語英語
ページ(範囲)452-455
ページ数4
ジャーナルJournal of Alloys and Compounds
356-357
DOI
出版ステータス出版済み - 8 11 2003
外部発表はい
イベントProceedings of the Eight International Symposium on Metal Hyd (MH 2002) - Annecy, フランス
継続期間: 9 2 20029 6 2002

All Science Journal Classification (ASJC) codes

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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