Cutting tool with wear-recognition layer

摘要

Tool with optional wear-protection coating has, as an outer layer arranged on top of the substrate body or wear-protection coating, a single-layer wear-recognition layer (A) or a multilayer wear-recognition layer (B) comprising at least 4 individual layers arranged one above another, said layer or layers being produced by depositing elemental metals, metal alloys or electrically conductive metal compounds with a PVD process. Individual layer of (A) or at least one individual layer of (B) contain at least two different metals, the wear-recognition layer comprises a region produced by anodic oxidation from the upper surface down to a penetration depth that does not extend over the entire thickness of the wear-recognition layer, and the individual layer of (A) or the at least one individual layer of (B) has at least two different phases before the anodic oxidation and in the regions of the wear recognition layer that are not anodically oxidized.

主权项

1. Tool, consisting of:
a substrate body, optionally a single-layer or multi-layer wear protection coating deposited on the substrate body and a single-layer wear recognition layer deposited as the outermost layer over the substrate body or the wear protection coating, or a multi-layer wear recognition layer comprising at least four individual layers arranged one over another, produced by deposition of elemental metals, metal alloys or electrically conductive metal compounds by a PVD process, wherein the individual layer of the single-layer wear recognition layer or at least one individual layer of the multi-layer wear recognition coating contains at least two different metals, the wear recognition layer comprises a region produced by anodic oxidation of the material of the wear recognition layer from the outer surface of the wear recognition layer to a depth of penetration which does not extend beyond the total thickness of the wear recognition layer, the individual layer of the single-layer wear recognition layer exhibits a thickness in the range of from 100 nm to 10 μm or each individual layer of the multi-layer wear recognition layer exhibits a thickness in the range of from 0.5 nm to 1 μm and the individual layer of the single-layer wear recognition layer or the at least one individual layer of the multi-layer wear recognition layer containing at least two different metals exhibits at least two different phases prior to the anodic oxidation and in the regions of the wear recognition layer not oxidised anodically.