Title:
TUNGSTEN ALLOY, TUNGSTEN ALLOY PART USING SAME, DISCHARGE LAMP, TRANSMISSION TUBE, AND MAGNETRON
Document Type and Number:
WIPO Patent Application WO/2013/103100
Kind Code:
A1
Abstract:
The purpose of the invention is to obtain a tungsten alloy having emission characteristics equal to or greater than a tungsten alloy containing thorium, which is a radioactive substance, without using thorium; and to provide a transmission tube, a magnetron, and a discharge lamp in which the tungsten alloy is employed. This tungsten alloy contains an Hf moiety in an amount of 0.1 to 3 wt% inclusive, expressed as HfO2.
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Inventors:
NAKANO KAYO (JP)
YAMAMOTO SHINICHI (JP)
HORIE HIROMICHI (JP)
YAMAMOTO SHINICHI (JP)
HORIE HIROMICHI (JP)
Application Number:
PCT/JP2012/083257
Publication Date:
July 11, 2013
Filing Date:
December 21, 2012
Export Citation:
Assignee:
TOSHIBA KK (JP)
TOSHIBA MATERIALS CO LTD (JP)
TOSHIBA MATERIALS CO LTD (JP)
International Classes:
C22C1/04; C22C1/05; C22C1/10; C22C27/04; H01J1/14; H01J23/04; H01J61/06; B22F3/10; B22F3/24
Foreign References:
| JP2006102775A | 2006-04-20 | |||
| JP2005285676A | 2005-10-13 | |||
| JP2005519435A | 2005-06-30 | |||
| JP2010159484A | 2010-07-22 | |||
| JP2008539332A | 2008-11-13 | |||
| JP2007113104A | 2007-05-10 | |||
| JP2002226935A | 2002-08-14 | |||
| JP2011103240A | 2011-05-26 | |||
| JP4741190B2 | 2011-08-03 |
Other References:
See also references of EP 2801629A4
Attorney, Agent or Firm:
KURATA, Masatoshi et al. (JP)
Masatoshi Kurata (JP)
Masatoshi Kurata (JP)
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Claims:
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