Abstract: This invention is related to a powder of a transition metal dissolved tungsten alloy carbide which comprises a transition metal element forcibly dissolved as a solid solution which represented by Formula [1] of M-W—C wherein M is one or more of Co, Fe, Ni and Mn and its tungsten alloy carbide diffused cemented carbide. The diffused cemented carbide is compatible with the conventional tungsten carbide diffused cemented carbide and comprises a binder metal and a tungsten alloy carbide which is provided with a solid solution phase of at least one transition metal element selected from the group consisting of cobalt, iron, nickel and manganese, included in a tungsten carbide skeleton, which exhibits a peak derived from a bcc tungsten phase in an X-ray diffraction diagram.

Abstract: This invention is related to a powder of a tungsten alloy with a transition metal dissolved therein as a solid solution that is suitable as material for a cemented carbide represented by formula [1] and a material for a catalyst. The powder of 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 and Ni. The use of tungsten alloy powder can provide a tungsten carbide with a transition metal dissolved therein as a solid solution in which a solid solution phase comprising 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.