DIAMOND JOINED BODY, AND METHOD FOR MANUFACTURING DIAMOND JOINED BODY

摘要

This diamond joined body is a diamond joined body provided with a hard base body and a polycrystalline diamond layer disposed on the hard base body, wherein, in a cross section parallel to the direction of a normal line to an interface between the hard base body and the polycrystalline diamond layer, the surface area ratio of carbon particles in a region of the hard base body that is surrounded by the interface and a virtual line x which is parallel to the interface on the hard base body thereof and is a distance of 500 μm from the interface, is less than 0.03%.