Patent ID: 10487388

Abstract:
Tool with main body made of carbide, cermet, ceramic, steel or high-speed steel and multi-layer wear-protection coating applied on the main body using a PVD process. The wear-protection coating comprises at least one layer (A) of TiaAl(1−a)N where 0.33≤a≤1 with layer thickness of 20 nm to 3 μm and at least one layer (B) comprising a sequence of at least 4 sub-layers arranged alternately in a stack, of TibSi(1−b)N and AlcCr(1−c)N where 0.70≤b≤0.98 and 0.3≤c≤0.75 with sub-layer thickness of 0.5 nm to 15 nm, and optionally further comprises a layer (C) of TidSi(1−d)N where 0.70≤d≤0.98 with layer thickness of 50 nm to 1 μm. The wear-protection coating can have further carbide layers and layers (A), (B) and (C) can contain up to 10 at. % of other metals, B, C and/or O per layer, depending on the process.