| 摘要 |
<p>The present invention relates to a coated cutting tool comprising a substrate and a PVD coating comprising an outermost zone C being a nitride, carbide or boride or mixtures thereof, of Si and at least two additional elements selected from Al, Y and groups 4, 5 or 6 of the periodic table and zone C is free from a compositional gradient of the average content of Si. Zone C have a laminar, aperiodic, multilayered structure alternating individual layers X and Y having different compositions from each other. The coating further comprising a zone A closest to the substrate, a transitional zone B, where:
-zone A is essentially free from Si,
-zone B comprising a compositional gradient of the average content of Si, where the average content of Si is increasing towards zone C. The present invention also relates to a method of making a coated cutting tool according to the above.</p> |
