SOLID-CARBIDE END MILLING CUTTER HAVING A TIALN-ZRN COATING

摘要

The invention relates to a solid-carbide milling cutter, comprising a substrate of carbide and a multi-layer coating applied in a PVD process at least to the surface regions that come into contact with a workpiece during the milling operation, wherein the multi-layer coating comprises a single- or multi-layer functional stratum deposited directly on the substrate surface and a single- or multi-layer cover stratum deposited above the functional stratum, wherein the functional stratum consists of one or more layers of Ti_xAl_1-xN with 0.3 ≤ x ≤ 0.55 and has a total thickness of 1 µm to 15 µm, the cover stratum consists of one or more layers of ZrN and has a total thickness of 50 nm to 1 µm and the functional stratum and the cover stratum are deposited by means of high-power impulse magnetron sputtering (HIPIMS), wherein, in the coating chamber, during the deposition of the functional stratum, power pulses are applied to each sputtering target consisting of material to be deposited, which power pulses transfer an amount of energy to the sputtering target that exceeds a maximum power density in the pulse of ≤ 500 W/cm².