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Title:
POWDER OF TUNGSTEN ALLOY WITH TRANSITION METAL DISSOLVED THEREIN AS SOLID SOLUTION AND PROCESS FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2010/024159
Kind Code:
A1
Abstract:
Disclosed is a powder of a tungsten alloy with a transition metal dissolved therein as a solid solution that is suitable as a material for a cemented carbide represented by formula [1] and a material for a catalyst.  The powder of the tungsten alloy is characterized in that at least one transition metal element selected from the group consisting of cobalt, iron, manganese, and nickel is dissolved as a solid solution in a tungsten grating and a peak derived from a bcc tungsten phase appears in an X-ray diffraction diagram. Formula [1]: M-W wherein M represents one or more elements selected from Co, Fe, Mn, or Ni. The use of the powder of the tungsten alloy can provide a tungsten carbide with a transition metal dissolved therein as a solid solution in which a solid solution phase of at least one transition metal element selected from the group consisting of cobalt, iron, manganese, and nickel, tungsten, and carbon is included in a tungsten carbide skeleton, and a tungsten carbide diffused cemented carbide.

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Inventors:
MORISHITA MASAO (JP)
YAMAMOTO HIROAKI (JP)
IKEBE MASAAKI (JP)
IWASAKI MASAHIRO (JP)
YANAGITA HIDEFUMI (JP)
NISHIMAKI HIROSHI (JP)
Application Number:
PCT/JP2009/064494
Publication Date:
March 04, 2010
Filing Date:
August 19, 2009
Export Citation:
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Assignee:
SANALLOY INDUSTRY CO LTD (JP)
MORISHITA MASAO (JP)
YAMAMOTO HIROAKI (JP)
IKEBE MASAAKI (JP)
IWASAKI MASAHIRO (JP)
YANAGITA HIDEFUMI (JP)
NISHIMAKI HIROSHI (JP)
International Classes:
B22F1/00; B22F9/22; B22F9/24; C22C27/04
Foreign References:
JPS5925950A1984-02-10
JPH07500804A1995-01-26
JP2007092089A2007-04-12
JP2002527626A2002-08-27
JPH10245603A1998-09-14
JP2002527626A2002-08-27
US4913731A1990-04-03
Attorney, Agent or Firm:
ISHII, Hisao et al. (JP)
Hisao Ishii (JP)
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