Tool for the cutting machining of workpieces and process for coating substrate bodies

摘要

The invention relates to a tool having at least one layer of TixAl1-xN, where 0.2≦x≦0.8, which is composed of a plurality of laminar plies to give an overall layer thickness of 0.01 μm to 3 μm and which has crystallites having a size of ≦10 nm. To produce such a layer, by magnetron sputtering in an N2 atmosphere, Ti and Al are respectively released from separately arranged cathode targets, wherein the tool is moved past the cathode repeatedly at a speed which is such that in each case only a nanocrystalline layer forms upon this movement.

主权项

1. A tool for the cutting machining of workpieces, in particular for milling cast iron workpieces, wherein the tool comprises a coated cemented carbide body having at least one layer of TiAlN comprising crystallites, wherein the layer consists of TixAl1-xN, where 0.2≦x≦0.8, wherein the crystallites present in the TiAlN layer have a size of ≦10 nm and wherein the TiAlN layer further comprises a plurality of laminar plies to give an overall layer thickness of 0.01 μm to 3 μm.