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Title:
HYDROGEN STORAGE ALLOY MATERIAL AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2004/090182
Kind Code:
A1
Abstract:
A hydrogen storage alloy material obtained by performing heat treatment of an amorphous alloy whose composition in terms of atomic% is represented by the formula: Zr100-a-bPdaMb (wherein 15≤a≤40, 02. This alloy material exhibits a hydrogen storage quantity of 2.5 wt.% or more based on the weight of Pd. This alloy material is suitable for use as a hydrogen storage/transportation medium. This alloy material can be produced by providing a melt of master alloy prepared from an ingot, effecting rapid solidification thereof at a cooling rate of 104 K/s or greater to thereby obtain an amorphous alloy, and conducting oxidative heat treatment of the amorphous alloy in air or another oxygen atmosphere at 250 to 350ºC so as to carry out selective oxidation of alloy element Zr with the result that hydrogen storage metal Pd or Pd compound is dispersed in the form of nanodiameter superfine particles in the base phase of ZrO2.

Inventors:
INOUE AKIHISA (JP)
KIMURA HISAMICHI (JP)
ARATA YOSHIAKI (JP)
Application Number:
PCT/JP2003/004416
Publication Date:
October 21, 2004
Filing Date:
April 07, 2003
Export Citation:
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Assignee:
JAPAN SCIENCE & TECH CORP (JP)
INOE AKIHISA (JP)
KIMURA HISAMICHI (JP)
ARATA YOSHIAKI (JP)
International Classes:
B22F9/02; C01B3/00; C04B35/488; C22C1/10; C22C16/00; C22C29/12; (IPC1-7): C22C16/00; B22F9/02; C22C1/10
Foreign References:
JP2002105609A2002-04-10
Attorney, Agent or Firm:
Nishi, Yoshiyuki (Suite 211 26-32, Nakahara 4-chome, Isogo-k, Yokohama-shi Kanagawa, JP)
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