Tungsten carbide powder and tungsten carbide mixed powder

Abstract

This invention relates to a tungsten carbide powder, which is composed of first tungsten carbide particles with added first element, wherein the first element is selected from at least one of the group consisting of titanium, zirconium, niobium, tantalum, molybdenum, cerium, and yttrium. Using an energy-dispersive X-ray spectroscopy device attached to a transmission electron microscope, line analysis is performed from position X1, which is located inside the first tungsten carbide particle and at a distance of 6 nm or more from the outer edge of the first tungsten carbide particle, toward position X2, which is located outside the first tungsten carbide particle and at a distance of 6 nm or more from the outer edge of the first tungsten carbide particle. The results are displayed in a coordinate system where the X-axis is the distance from position X1 and the Y-axis is the net intensity. In the first curve obtained therefrom, there is a first range in which the total net intensity of the first element is greater than the net intensity of tungsten at a distance P1 farther from the origin than the distance where the net intensity of tungsten is 0.5 times the maximum net intensity of tungsten.

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