Coated cutting tool

• Main Authors: Selinder, Torbjörn, Collin, Marianne, Reineck, Ingrid
• Format: Patent
• Language: English; French; German
• Published: 24.07.2019
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The present invention relates a to cutting tool comprising a substrate of cemented carbide, cermet, ceramics, cubic boron nitride or high speed steel on which at least on the functioning parts of the surface thereof a thin, adherent, hard and wear resistant coating is applied, wherein said coating comprises a laminated multilayer of alternating PVD or PECVD metal oxide layers, Me 1 X+Me 2 X+Me 1 X+Me 2 X..., where the metal atoms Me 1 and Me 2 are one or more of Ti, Nb, V, Mo, Zr, Cr, Al, Hf, Ta, Y and Si, and where at least one of Me 1 X and Me 2 X is a metal oxide+metal oxide nano-composite layer composed of two components, component A and component B, with different composition and different structure which components consist of a single phase oxide of one metal element or a solid solution of two or more metal oxides, wherein the layers Me 1 X and Me 2 X are different in composition or structure or both these properties and have individual layer thicknesses larger than 0.4 nm but smaller than 50 nm and where said laminated multilayer layer has a total thickness of between 0.2 and 20 µm.