Title:
HYDROGEN STORAGE ALLOY AND METHOD FOR PREPARING THE SAME
Document Type and Number:
WIPO Patent Application WO/2001/044525
Kind Code:
A1
Abstract:
A hydrogen storage alloy comprising, as a main phase, a body-centered lattice structure being capable of storing and releasing hydrogen, characterized as having a composition represented by the general empirical formula: Ti(100-a-0.4b)Cr(a-0.6b)Mb wherein a satisfies 20 $m(F) a(at%) $m(F) 80; b satisfies 0 $m(F) b(at%) $m(F) 10 when M is V element, and satisfies 0 $m(F) b(at%) < 5 when M is at least one element selected from Mo and W elements. A method for preparing a hydrogen storage alloy comprising, as a main phase, a body-centered lattice structure being capable of storing and releasing hydrogen, characterized as comprising a melting step which melts and homogenizes an alloy of a predetermined atomic ratio, a heat treatment step which holds the resultant homogeneous alloy at a temperature of a region just below the melting point of the alloy for a predetermined time, and a quenching step which cools rapidly the alloy which has experienced the above heat treatment.
Inventors:
OKADA MASUO (JP)
KURIIWA TAKAHIRO (JP)
KURIIWA TAKAHIRO (JP)
Application Number:
PCT/JP2000/002056
Publication Date:
June 21, 2001
Filing Date:
March 30, 2000
Export Citation:
Assignee:
TOHOKU TECHNO ARCH CO LTD (JP)
OKADA MASUO (JP)
KURIIWA TAKAHIRO (JP)
OKADA MASUO (JP)
KURIIWA TAKAHIRO (JP)
International Classes:
C01B3/00; C22C14/00; C22C27/06; C22C30/00; C22F1/16; H01M4/38; (IPC1-7): C22C1/00; C22C14/00; C22C27/06; C22C30/00; C22F1/11; C22F1/18
Foreign References:
| JPH10121180A | 1998-05-12 | |||
| JPH1180865A | 1999-03-26 | |||
| JPH11106859A | 1999-04-20 |
Other References:
TOMINAGA ET AL.: "Netsu shori ni yoru Ti-V-Cr kei goukin no soshiki henka to protium kyuzou tokusei", FUNTAI FUNMATSU YAKIN KYOKAI KOUEN GAIYOUSHUU, vol. 1999, 3 June 1999 (1999-06-03), pages - 51, XP002937081
Attorney, Agent or Firm:
Shigenobu, Kazuo (Kojimachi 4-chome Chiyoda-ku Tokyo, JP)
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