Coated cutting tool and a method of making thereof
AssigneeSandvik Intellectual Property AB
InventorsAndreas Hedin, Mats Ahlgren
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Abstract
The present invention relates to a cutting tool for metal machining with improved wear properties, comprising a cutting tool substrate of cemented carbide, cermet, ceramics or a super hard material, and a wear resistant coating, wherein the wear resistant coating comprises a PVD Ti—Si—C—N layer, and a method of making thereof.
Claims15
Method of making a cutting tool for metal machining comprising depositing on to a cutting tool substrate of cemented carbide, cermet, ceramics or a super hard material, a PVD Ti—Si—C—N layer using arc evaporation with one or more Ti targets and an addition of trimethylsilane gas to the reactive gas atmosphere, wherein said PVD Ti—Si—C—N layer has a residual stress of from −3.0 GPa compressive stress up to +0.5 GPa tensile stress.
A cutting tool for metal machining comprising a cutting tool substrate of cemented carbide, cermet, ceramics or a super hard material, and a wear resistant coating, wherein the wear resistant coating comprises a PVD Ti—Si—C—N layer, wherein said PVD Ti—Si—C—N layer has a residual stress of from −3.0 GPa compressive stress up to +0.5 GPa tensile stress.
Dependencies are inferred from the claim text.