Patent ID: 8871362

Claim:
A cutting tool having a base body and a multilayered coating applied thereto, wherein at least two layers, arranged one on top of the other, of the multilayered coating contain metal oxide of the same metal or of different metals, wherein the at least two metal oxide layers arranged one on top of the other are produced successively by different PVD processes selected from i) RMS, ii) arc vapour deposition, iii) ion plating, iv) electron beam vapour deposition and v) laser deposition, wherein modifications of the respective processes i) to v) do not constitute different PVD-processes, wherein the at least two metal oxide layers arranged one on top of the other are arranged directly on one another without intermediate layers, wherein the at least two metal oxide layers arranged one on top of the other alternatingly comprise gamma aluminum oxide and zirconium oxide, and wherein the metal oxides of the at least two metal oxide layers arranged one on top of the other have a different crystal structure.