Abstract: The present invention relates to a coated cutting tool for metal machining with a from about 2.0 to about 20 ?m thick PVD coating, having both the wear resistance of a coating of homogeneous layers and the toughness of a multilayer coating, comprising a first (Mec1,Mec2)(C,N,O) layer where Mec1 is one or more of the elements in the transition metal group IV-VI, Al and Si and Mec2 is one of the elements in the transition metal group IV-VI from about 1.0 to about 4.5 ?m thick, a second (Med1,Med2)(C,N) layer where Med1 is one or more of the elements in the transition metal group IV-VI, Al and Si and Med2 is one of the elements in the transition metal group IV-VI and Y, from about 0.5 to about 4.5 ?m thick, and in between the first and the second layer, an (Mee1, Mee2)(C,N,O) layer where Mee1 is one or more of the elements in the transition metal group IV-VI, Al and Si and Mee2 is one of the elements in the transition metal group IV-VI and Y, from about 0.1 to about 1.

Abstract: A cutting tool includes a substrate on which at least on the functioning parts of the surface thereof a thin, adherent, hard and wear resistant coating is applied, wherein the coating includes a laminated multilayer of alternating PVD or PECVD metal oxide layers, Me1X+Me2X+Me1X+Me2X . . . , where at least one of Me1X and Me2X is a metal oxide+metal oxide nano-composite layer composed of two components with different composition and different structure which components include a single phase oxide of one metal element or a solid solution of two or more metal oxides, wherein the layers Me1X and Me2X are different in composition or structure and have individual layer thicknesses larger than about 0.4 nm but smaller than about 50 nm and where said laminated multilayer layer has a total thickness of between about 0.2 and about 20 ?m.

Abstract: The present disclosure relates to cutting tool edges that include on a rake face a superabrasive layer and a HPHT sintered or HPHT bonded cap layer. The cap layer improves adhesion between the superabrasive layer and an optional coating system for the cutting insert and acts as a thick anti-friction layer and/or a thermal barrier coating.

Abstract: The present invention relates to a cutting tool comprising a substrate and, a wear resistant coating, said wear resistant coating is composed of one or more layers of refractory compounds of which at least one layer consists of a multilayered MX/LX/MX/LX laminar structure where the alternating layers MX and LX are carbides or nitrides with the elements M and L selected from the group consisting of Ti, Nb, Hf, V, Ta, Mo, Zr, Cr, Al, Si or W and mixtures thereof, wherein the sequence of individual layer thicknesses has no repeat period but essentially aperiodic throughout the entire multilayered structure, and where the individual MX and LX layer thickness is larger than 0.1 ran but the sum of any 10 consecutive layers in the structure is smaller than 300 nm, and the total thickness of said multilayered structure is larger than 0.5 ?m but smaller than 20 ?m, deposited by PVD-technique, where at least one of MX or LX are electrically isolating, and a method of making such a cutting tool.

Abstract: A method of making a cutting tool, the cutting tool having a WC—Co based cemented carbide body and a multi-layer coating, the method including: applying a first innermost bonding layer TiN to the body; applying a second layer in the form of a multilayered structure having sublayers of (TixAl1-x)N where x varies according to 0.45<x<0.55 and 0.70<x<0.80; applying a third layer of (TixAl1-x)N where x is 0.45<x<0.55; and applying a forth outermost layer on TiN.

Abstract: The present invention describes a coating cutting tool for metal machining and a process for producing such tools. The coating is composed of one or more layers of refractory compounds of which at least one layer consists of nanocrystalline aluminum spinel of the type (Me)xAl2O3+x where Me is a second metal and 0<x≦1, deposited by Physical Vapor Deposition.

Abstract: The present invention relates to a coated cutting tool (e.g.—cemented carbide insert) useful for grooving or parting of steel or stainless steel components such as tubes and bars. The insert is characterised by a WC-Co-based cemented carbide substrate having a highly W-alloyed Co-binder phase and a hard and wear resistant coating including a multilayered structure of sublayers of the composition (TixAl1−x)N with a periodic and repeated variation of the Ti/Al ratio.

Abstract: There is disclosed a cutting tool comprising a body of a sintered cemented carbide or cermet, ceramic or high speed steel on which at least on the functioning parts of the surface of the body, a thin, adherent, hard and wear resistant coating is applied. The coating comprises a laminar structure of refractory compounds in a polycrystalline, repetitive form, (MLX/Al2O3)/(MLX/Al2O3)/(MLX/Al2O3)/(MLX/Al2O3)/ . . . , where the alternating sublayers consist of metal nitrides (or carbides) and crystalline alumina of the alpha (&agr;)- and/or the gamma (&ggr;) phase, preferably of metal nitrides and crystalline alumina of the gamma phase, and in said coating the sequence of individual layer thicknesses has no repeat period but is essentially aperiodic throughout the entire multilayered structure. The metal elements in the layers MLX are selected from Ti, Nb, Hf, V, Ta, Mo, Zr, Cr, W, Al and mixtures thereof. The total thickness of said multilayered coating is between 0.5 and 20 &mgr;m.

Abstract: The present invention relates to a coated cutting tool insert useful for grooving or severing steel components such as steel or stainless steel tubes and bars. The insert is characterized by WC—Co-based cemented carbide substrate having a highly W-alloyed Co-binder phase and a relatively thin coating including an inner layer of TiCxNyOz with columnar grains followed by a layer of fine grained &kgr;—Al2O3 and a top layer of TiN.

Abstract: The present invention relates to a coated cutting tool (e.g.—cemented carbide insert) useful for grooving or parting of steel or stainless steel components such as tubes and bars. The insert is characterised by a WC-Co-based cemented carbide substrate having a highly W-alloyed Co-binder phase and a hard and wear resistant coating including a multilayered structure of sublayers of the composition (TixAl1-x)N with a periodic and repeated variation of the Ti/Al ratio.

Abstract: A method of making a cutting tool, the cutting tool having a WC—Co based cemented carbide body and a multi-layer coating, the method including: applying a first innermost bonding layer TiN to the body; applying a second layer in the form of a mutlilayered structure having sublayers of (TixAl1-x)N were x varies according to 0.45<x<0.55 and 0.70<x<0.80; applying a third layer of (TixAl1-x)N where x is 0.45<x<0.55; and applying a forth outermost layer on TiN.