Patent ID: 11913096
Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B | IPC C

Claim 4:
5. The cemented carbide according to claim 1,
wherein the dispersity is a standard deviation of an area of each Voronoi cell in a Voronoi diagram that is obtained by performing a Voronoi partition with a center of gravity of the second hard phase as a generator, and
the Voronoi diagram is obtained by extracting the second hard phases in a backscattered electron image obtained by capturing a cross section of the cemented carbide with a scanning electron microscope, setting a 12.0 μm×8.2 μm rectangular measurement visual field in an image resulting from a binarization treatment of the backscattered electron image, performing Voronoi partitions with centers of gravity of the extracted second hard phases as generators and calculating Voronoi cells of all of the generators.