Abstract: The invention relates to a process for coating an article (1), wherein a coating (2) having one or more coating layers (3, 4, 5) is applied to the article (1), wherein at least one coating layer (5) is formed essentially from aluminium, titanium and nitrogen, wherein the coating layer (5) has, at least in some regions, adjoining lamellae of different chemical composition and is deposited from a gas phase comprising at least one aluminium precursor and at least one titanium precursor. According to the invention, by setting a molar ratio of aluminium to titanium, the lamellae of different chemical composition are each formed with a cubic structure, it being possible for aluminium and titanium to be partly replaced by other metals and for nitrogen to be partly replaced by oxygen and/or carbon with retention of the cubic structure. The invention further relates to a correspondingly produced coating (2).

Abstract: The invention relates to a process for coating an article (1), wherein a coating (2) having one or more coating layers (3, 4, 5) is applied to the article (1), wherein at least one coating layer (5) is formed essentially from aluminium, titanium and nitrogen, wherein the coating layer (5) has, at least in some regions, adjoining lamellae of different chemical composition and is deposited from a gas phase comprising at least one aluminium precursor and at least one titanium precursor. According to the invention, by setting a molar ratio of aluminium to titanium, the lamellae of different chemical composition are each formed with a cubic structure, it being possible for aluminium and titanium to be partly replaced by other metals and for nitrogen to be partly replaced by oxygen and/or carbon with retention of the cubic structure. The invention further relates to a correspondingly produced coating (2).

Abstract: The invention relates to a body, especially a cutting element, at least partially comprising a coating, whereby the coating is formed from one or more coating layers, whereby at least one coating layer comprises aluminum, titanium and nitrogen or is formed from these elements. According to the invention, the coating layer with aluminum, titanium and nitrogen at least partially comprises lamellae having a lamellar thickness of less than 100 nm, whereby the lamellae comprise successive sections having different phases. The invention further relates to a method for coating a body, especially a cutting element.

Abstract: The invention relates to a body, especially a cutting element, at least partially comprising a coating, whereby the coating is formed from one or more coating layers, whereby at least one coating layer comprises aluminum, titanium and nitrogen or is formed from these elements. According to the invention, the coating layer with aluminum, titanium and nitrogen at least partially comprises lamellae having a lamellar thickness of less than 100 nm, whereby the lamellae comprise successive sections having different phases. The invention further relates to a method for coating a body, especially a cutting element.

Abstract: The invention relates to an indexable insert of hard metal or cermet with a multi-layer surface coating for a machining of objects essentially made of metal or an alloy, in particular those of a polyphase material such as casting alloys and the like. To increase the service life of the tools with optionally improved machining surface, it is provided with a multi-layer coating that the outermost layer or cover layer is formed as an oxide layer, in particular of ?-Al2O3, whereby the layer beneath the cover layer and connected threto is composed of TiN.

Abstract: A method for coating a tool or tool part, includes providing a base structure of the tool or the tool part at a temperature of 850° C. to 950° C. and applying at least one layer to the base structure. One or more layers of the at least one layer is formed of a metal carbonitride of composed of at least one of titanium, zirconium, hafnium, vanadium, niobium, tantalum and chromium. The one or more layers of the at least one layer is deposited by a deposition of a gas containing methane, nitrogen and at least one metal compound. After beginning the applying, the temperature is increased by at least 40° C. to an increased temperature and the deposition is continued for a time at the increased temperature.

Abstract: The invention relates to a friction stir welding tool (1) with an essentially cylindrical shank (2), which has a peg (3) with a smaller diameter projecting on one end (5) starting from a shoulder region (4) of the shank (2). According to the invention it is provided in order to create a friction stir welding tool (1) for welding steel, that the friction stir welding tool (1), at least in the region of the peg (3) and in the shoulder region (4), is made of a hard metal containing 80% by weight to 98% by weight tungsten carbide with an average grain size of more than 1 ?m and up to 20% by weight cobalt as well as optionally a total of up to 18% by weight titanium carbide, tantalum carbide, niobium carbide and/or mixed carbides thereof and at least in one of the referenced regions has a coating of one or more layers.

Abstract: A method for coating a tool or tool part, includes providing a base structure of the tool or the tool part at a temperature of 850° C. to 950° C. and applying at least one layer to the base structure. One or more layers of the at least one layer is formed of a metal carbonitride of composed of at least one of titanium, zirconium, hafnium, vanadium, niobium, tantalum and chromium. The one or more layers of the at least one layer is deposited by a deposition of a gas containing methane, nitrogen and at least one metal compound. After beginning the applying, the temperature is increased by at least 40° C. to an increased temperature and the deposition is continued for a time at the increased temperature.

Abstract: The invention relates to a coated hard metal body with increased wear resistance by means of a CVD coating and to a method for the production thereof. In order to improve the wear behavior of hard metal bodies, preferably cutting tools, in particular to reduce a crater wear, it is provided according to the invention that the sintered compact contains more than 5% by weight mixed carbides of the elements Ti and/or Nb and/or Ta, has on the surface a conditioning area with a carbon content and a nitrogen content that increases towards the outside, and has a fine-grained or microcrystalline bearing layer of nitride and/or carbide and/or carbonitride, which layer is applied according to the CVD method at a temperature exceeding 900° C.

Abstract: The invention relates to an indexable insert of hard metal or cermet with a multi-layer surface coating for a machining of objects essentially made of metal or an alloy, in particular those of a polyphase material such as casting alloys and the like. To increase the service life of the tools with optionally improved machining surface, it is provided with a multi-layer coating that the outermost layer or cover layer is formed as an oxide layer, in particular of ?-Al2O3, whereby the layer beneath the cover layer and connected thereto is composed of TiN.

Abstract: Cutting insert for tools for cutting workpieces or objects, including at least one cutting edge, at least one lateral surface, and at least one cutting face comprising a fine structure having convex and concave areas. Additionally, the convex and concave areas, have a depth T and are respectively spaced apart from one another by a spacing A greater than 0.1 mm and less than 1.0 mm.