| 摘要 |
The present invention relates to the PVD coated tungsten carbide (WC) based cemented cutting inserts with ruthenium (Ru) as a key chemical element, or a key feature, in the cobalt (Co)-based binder phase, particularly useful for machining today's mold and die materials. The invention provides a cutting tool, comprising a cemented carbide substrate, wherein the cemented carbide substrate comprises hard particles and a binder, and wherein the substrate comprises tungsten carbide, niobium carbide, cobalt, and ruthenium, and at least one coating on at least a portion of the substrate, wherein the coating comprises a physical vapor deposition coating. The invention further provides a method of coating a substrate, comprising applying a coating on a cemented carbide substrate by physical vapor deposition, wherein the cemented carbide substrate comprises hard particles and a binder and wherein the substrate comprises tungsten carbide, niobium carbide, cobalt, and ruthenium.
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