▎ 摘　　要

NOVELTY - Powder comprises metal-doped carbon-based powder in which a metal is contained in a space between carbon atom layers of the carbon-based powder; and diamond powder. The metal includes nickel, cobalt, iron, manganese, titanium, silicon and tungsten. The carbon-based powder includes graphite, graphene or carbon nanotubes, which are allotropes of carbon. USE - The powder is useful for producing polycrystalline diamond sintered body (claimed). ADVANTAGE - The powder has excellent physical and mechanical properties, and improves the lifespan of cutting tools.