Title:
【発明の名称】水素吸蔵合金の製造方法
Document Type and Number:
Japanese Patent JP2560567
Kind Code:
B2
Abstract:
PURPOSE:To economically produce a hydrogen storage alloy enhanced in alloying rate. CONSTITUTION:This hydrogen storage alloy is produced by the following steps. Namely, (1) the powders M of >=2 different kinds of metals, e.g. Mg and Ni giving a hydrogen storage alloy on alloying, a crushing ball B and 0.5-1.5wt.% of a higher fatty acid based on the metal powder are charged into the mill pot 21 of a high-speed ball mill. (2) The mill pot is filled in with a nonoxidizing atmosphere. The mill is operated under conditions where the resultant crushing acceleration ratio G expressed by the following equation is controlled to >=30 and the ratio R of the rotating to revolving angular velocity to <=1.9 to exert an effective mechanical alloying effect. The equation is expressed by G=amax/g=(omega1)<2>/2g(K+NX(1+R)<2>, where G is the resultant crushing acceleration ratio, amax is the resultant crushing acceleration, omega1 is the revolving angular velocity (1/S), K is the diameter (m) of revolution, N is the inner diameter (m) of the mill pot, omega2 is the relative angular velocity (1/S) of the rotation to revolution, and R=omega2/omega1.
Inventors:
OKADA TERUYA
KANEKO KANTARO
YAMAKAWA TAKASHI
OGATA MASARU
KANEKO KANTARO
YAMAKAWA TAKASHI
OGATA MASARU
Application Number:
JP12205691A
Publication Date:
December 04, 1996
Filing Date:
April 23, 1991
Export Citation:
Assignee:
KURIMOTO LTD
International Classes:
B22F9/04; C22C1/00; B22F1/00; (IPC1-7): C22C1/00; B22F1/00; B22F9/04
Domestic Patent References:
| JPH04323333A | ||||
| JPH04323334A |
Attorney, Agent or Firm:
Junzo Aono