Title:
NIOBIUM GRANULATED POWDER PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2015/053239
Kind Code:
A1
Abstract:
The present invention provides a niobium granulated powder production method characterized by including: a step in which niobium hydride and a metal oxide are mixed and a mechanical alloy is obtained by using mechanical alloying; a step in which the mechanical alloy is pulverized; and a step in which the pulverized mechanical alloy is agglomerated by heat treatment and a granulated substance is formed. A capacitor using, as a positive electrode body therefor, a sintered body of the niobium granulated powder obtained by this method is capable of increasing capacitor capacity by preventing excessive formation of dielectric film.
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Inventors:
SHIBUYA YOSHINORI (JP)
TSUMITA YASUO (JP)
KAWASAKI TOSHIYA (JP)
TSUMITA YASUO (JP)
KAWASAKI TOSHIYA (JP)
Application Number:
PCT/JP2014/076742
Publication Date:
April 16, 2015
Filing Date:
October 07, 2014
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
International Classes:
B22F1/142; B22F1/148; B22F9/20; C22C27/02; H01G9/052
Domestic Patent References:
| WO2002015208A1 | 2002-02-21 | |||
| WO2009012124A2 | 2009-01-22 |
Foreign References:
| JP2005064038A | 2005-03-10 | |||
| JP2007081067A | 2007-03-29 | |||
| JP2012069967A | 2012-04-05 | |||
| JP2011023745A | 2011-02-03 | |||
| JP2010034589A | 2010-02-12 | |||
| JPH10242004A | 1998-09-11 | |||
| US6115235A | 2000-09-05 | |||
| JP2002025864A | 2002-01-25 | |||
| US6643120B2 | 2003-11-04 | |||
| US6652619B2 | 2003-11-25 | |||
| JP2010533642A | 2010-10-28 | |||
| JP2008156202A | 2008-07-10 | |||
| US8107219B2 | 2012-01-31 | |||
| US8107219B2 | 2012-01-31 |
Other References:
See also references of EP 3056299A4
Attorney, Agent or Firm:
OHIE Kunihisa et al. (JP)
Landlord Kunihisa (JP)
Landlord Kunihisa (JP)
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