Abstract: A process for manufacturing a coated cutting tool for chip-forming metal machining having a substrate of cemented carbide, cermet or cubic boron nitride based ceramic material and a single-layered or multi-layered wear resistant hard coating is provided. Layers of the hard coating have at least one alpha phase Al2O3 coating layer deposited by chemical vapour deposition (CVD) at an average thickness from 1 ?m to 20 ?m. The deposition of the alpha phase Al2O3 coating layer occurs at a temperature in the range from 600 to 900° C., using a process gas composition, as introduced into the CVD reactor, including AICI3, H2O, H2 and optionally HCl and/or a sulfur source, selected from H2S, SF6, SO2 and SO3. In the process gas composition, the volume ratio of H2O/AlCl3 is from 0.5 to 2.5, and the volume ratio of H2/AlCl3 is from 200 to 3000.

Abstract: A coated cutting tool consisting of a substrate and a multi-layered wear resistant hard coating and a process for manufacturing the same is provided. The layers of the hard coating are deposited by chemical vapour deposition (CVD) and include a TiCN layer with a multi-sublayer structure of alternating C-type and N-type sublayers and an overall fiber texture characterized by a texture coefficient TC (4 2 2) in the range from 3.0 to 5.5, an oxygen containing Ti or Ti+Al compound bonding layer, and an ?-Al2O3 layer on top of the bonding layer with an overall fiber texture characterized by a texture coefficient TC (0 0 12)>5.

Abstract: A coated cutting tool includes a substrate and a coating. The coating has an inner layer of 4-14 ?m thick Ti1-xAlxN, an intermediate layer of 0.05-1 ?m TiCN and at least one outer layer of 1-9 ?m ?-Al2O3. The ?-Al2O3 layer exhibits an X-ray diffraction pattern, as measured using CuK? radiation and theta-2theta scan. A texture coefficient TC(hkl) is defined according to Harris formula, wherein the (hkl) reflections used are (0 2 4), (1 1 6), (3 0 0) and (0 0 12), I(hkl)=measured intensity (peak intensity) of the (hkl) reflection, 10(hkl)=standard intensity according to ICDD's PDF-card No. 00-042-1468, n=number of reflections used in the calculation, and 3<TC(0 0 12)<4.

Abstract: A coated cutting tool has a substrate of cemented carbide, cermet, ceramics, steel or cubic boron nitride and a multi-layered wear resistant coating deposited thereon has a total thickness from 4 to 25 ?m. The multi-layered wear resistant coating includes a TiAlCN layer (a) represented by the formula Ti1-xAlxCyNz with 0.2?x?0.97, 0?y?0.25 and 0.7?z?1.15 deposited by CVD, and a ?-Al2O3 layer (b) of kappa aluminium oxide deposited by CVD immediately on top of the TiAlCN layer (a). The Ti1-AlxCyNz layer (a) has an overall fiber texture with the {111} plane growing parallel to the substrate surface and a {111} pole figure, measured over an angle range of 0°???80° and the ?-Al2O3 layer (b) has an overall fiber texture with the {002} plane growing parallel to the substrate surface and a {002} pole figure, over an angle range of 0°???80°.

Abstract: A coated cutting tool includes a substrate of cemented carbide, cermet, ceramics, steel or cubic boron nitride and a multi-layered wear resistant coating. The multi-layered wear resistant coating has a total thickness from 5 to 25 ?m and includes refractory coating layers deposited by chemical vapour deposition (CVD) or moderate temperature chemical vapour deposition (MT-CVD). The multi-layered wear resistant coating has at least one pair of layers (a) and (b), with layer (b) being deposited immediately on top of layer (a). Layer (a) is a layer of aluminium nitride having hexagonal crystal structure (h-AlN) and a thickness from 10 nm to 750 nm. Layer (b) is a layer of titanium aluminium nitride or titanium aluminium carbonitride represented by the general formula Ti1-xAlxCyNz with 0.4?x?0.95, 0?y?0.10 and 0.85?z?1.15, having a thickness from 0.5 ?m to 15 ?m, and at least 90% of the Ti1-xAlxCyNz of layer (b) has a face-centered cubic (fcc) crystal structure.

Abstract: A tool having includes a base body of cemented carbide, cermet, ceramics, steel or high-speed steel and a single-layer or multi-layer wear protection coating deposited thereon by CVD process and having a thickness within the range of from 2 ?m to 25 ?m. The wear protection coating has at least a Ti1-xAlxCyNz layer with 0.40?x?0.95, 0?y?0.10 and 0.85?z?1.15 having a thickness in the range of from 1 ?m to 16 ?m and having >85 vol-% face-centered cubic (fcc) crystal structure. The Ti1-xAlxCyNz layer includes precipitations of Ti1-oAloCpNq at the grain boundaries of the Ti1-xAlxCyNz crystallites have a higher Al content than inside the crystallites, wherein 0.95?o?1.00, 0?p?0.10, 0.85?q?1.15 and (0?x)?0.05.

Abstract: A coated cutting tool includes a substrate of cemented carbide, cermet, ceramics, steel or cubic boron nitride, a multi-layered wear resistant coating and at least two refractory coating layers deposited. The at least two refractory coating layers include a first coating layer and a second coating layer deposited on top of each other. The first coating layer is titanium aluminium nitride or carbonitride Ti1-uAluCvNw, with 0.2?u?1.0, 0?v?0.25 and 0.7?w?1.15 deposited by CVD. The second coating layer is titanium carbonitride TixCyN1-y, with 0.85?x?1.1 and 0.4?y?0.85, and is deposited on top of the first coating layer by MT-CVD. The second TixCyN1-y coating layer has a columnar grain morphology and the overall fiber texture of the TixCyN1-y coating layer is characterized by a texture coefficient TC (1 1 1)>2.

Abstract: A tool has a main part of hard metal, cermet, ceramic, steel, high-speed steel, and a single or multilayer wear protection coating applied onto the main part by CVD and which has a thickness from 3 ?m to 25 ?m. The wear protection coating has at least one Ti1-xAlxCyNz layer with stoichiometric coefficients 0.70?x<1.0?y<0.25 and 0.75?z<1.15 and a thickness from 1.5 ?m to 17 ?m. The T1-xAlxCyNz layer has a lamellar structure with lamellae with thickness of no more than 150 nm, preferably no more than 100 nm, particularly preferably no more than 50 nm. Lamellae are made of periodically alternating regions of the Ti1-xAlxCyNz layer with alternatingly different stoichiometric proportions of Ti and Al, having the same crystal structure (crystallographic phase), and the Ti1-xAlxCyNz layer has at least 90% vol. % of face centered cubic (fcc) crystal structure.

Abstract: A tool having a base body of carbide, cermet, ceramic, steel or high speed steel and a single-layer or multi-layer wear-protection coating applied thereto in a CVD process, wherein the wear-protection coating has at least one Ti1-xAlxCyNz layer having stoichiometry coefficients 0.70?x<1.0?y<0.25 and 0.75?z<1.15 wherein the Ti1-xAlxCyNz layer is of a thickness of 1 ?m to 25 ?m and has a crystallographic preferential orientation, which is characterised by a ratio of the intensities of the X-ray diffraction peaks of the crystallographic {111} plane and the {200} plane, wherein I{111}/I{200}>1+h (In h)2, wherein h is the thickness of the Ti1-xAlxCyNz layer in micrometer.