Title:
アルカリ電池用亜鉛合金粉末およびその製造方法
Document Type and Number:
Japanese Patent JP4336783
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain zinc alloy particles for alkaline battery that is suppressed of hydrogen gas generation and excellent in discharge characteristics by controlling particle shape by a means of jet gas and a control method other than the oxygen concentration control in the device atmosphere in the manufacture of zinc particles by atomization method. SOLUTION: A molten metal of zinc alloy containing 0.0001-0.5 wt.% of one or more of elements out of bismuth, indium, aluminum and magnesium is flown down, and, by keeping the oxygen concentration in the device atmosphere at 0.1% or less and then by jetting by high pressure a gas of an oxygen concentration of 0.1% or less into this molten metal flow, the molten metal is dispersed into micro molten drops. And by crashing these micro molten drops into the crash plate such as a metal plate, atomized powder comprising mixed flat shape particles and spherical particles is obtained. The flat shape particles have a thickness of 50 μm or less and, by making the ratio of flat shape particles against the total particles 20% or more, have an excellent discharge characteristics in the use of the battery and contain little oxygen, thereby the generation of hydrogen is suppressed.
Inventors:
Kenji Ichiyasu
Hikoichi Zhang
Yasuyuki Koyama
Shigeru Fuchida
Fumihiro Sato
Hikoichi Zhang
Yasuyuki Koyama
Shigeru Fuchida
Fumihiro Sato
Application Number:
JP2000173439A
Publication Date:
September 30, 2009
Filing Date:
June 09, 2000
Export Citation:
Assignee:
dowa Electronics Co., Ltd.
International Classes:
B22F9/08; H01M4/42; B22F1/00; C22C18/00; C22C18/04; H01M4/06; H01M6/06
Domestic Patent References:
| JP10162812A | ||||
| JP62031951A | ||||
| JP8096808A | ||||
| JP7245103A | ||||
| JP10162869A | ||||
| JP5299083A | ||||
| JP5166507A | ||||
| JP8315816A | ||||
| JP62126330U | ||||
| JP9092278A | ||||
| JP7161356A | ||||
| JP1187764A | ||||
| JP10270026A |
Attorney, Agent or Firm:
Kenji Wada
Komatsu Taka
Komatsu Taka