Kennametal Inc.

Karl Heinz Wendt

Yixiong Liu

Peter Rudolf Leicht

Volkmar Sottke

Rodrigo Alejandro Cooper

Hartmut Westphal

Bhaskar Alok

Mark S Greenfield

Michael Hacker

Marcus Paul

In one aspect, articles are described comprising wear resistant coatings employing one or more composite refractory layers. For example, a coated article described herein comprises a substrate and a coating deposited by CVD adhered to the substrate, the coating including a multiphase refractory layer comprising an alumina phase and a zirconia phase, wherein the zirconia phase has a texture coefficient for the (200) growth direction, TC(200), greater than 4.

Composite refractory coatings and applications thereof

A cutting tool () is specified with a cutting region () that comprises a substrate () onto which a coating () is applied, which coating () is subsequently processed, whereby a sharp cutting edge () is formed. Furthermore, a corresponding method for the manufacture of the cutting tool () is specified. By means of the sharpening of the cutting edge () after the coating rather than before, a particularly sharp cutting edge () is formed, whereby the precision of the cutting tool () as well as its service life is improved.

Cutting tool and method for its manufacture

A CVD-coated article has a substrate with a substrate surface and a CVD coating scheme on the substrate surface. The coating scheme includes a coating layer of TiMenitride wherein Me is selected from the group of zirconium or hafnium or a mixture of zirconium and hafnium, and x equals between about 0.1 and about 0.9. The coating layer of TiMenitride has a microhardness equal to between about 2300 HV0.05 and about 2600 HV0.05, a face centered cubic crystal structure, and a lattice constant equal to between about 0.427 nanometers and about 0.453 nanometers.

CVD-coated article and CVD process of making the same

In one aspect, cutting tools are described having coatings adhered thereto which, in some embodiments, demonstrate desirable wear resistance and increased cutting lifetimes. A coated cutting tool described herein comprises a substrate and a coating adhered to the substrate, the coating including a refractory layer comprising plurality of sublayer groups, a sublayer group comprising an aluminum oxynitride (AlON) sublayer or a composite AlON sublayer and an alumina (AlO) sublayer or composite alumina sublayer.

Refractory coatings for cutting tools

In one aspect, cutting tools are described having coatings adhered thereto which, in some embodiments, can demonstrate desirable wear resistance and increased cutting lifetimes. A coated cutting tool, in some embodiments, comprises a substrate and a coating adhered to the substrate, the coating comprising at least one Zr doped layer deposited by chemical vapor deposition comprising ZrAlO.

Coatings for cutting tools

In one aspect, coated cutting tools are described herein. A coated cutting tool described herein comprises a substrate and a coating adhered to the substrate, the coating comprising at least one composite layer deposited by chemical vapor deposition, the composite layer comprising an aluminum oxynitride phase, a metal oxide phase including zirconium oxide, a zirconium sulfur nitride phase and a metal oxynitride phase in addition to the aluminum oxynitride phase, the metal oxynitride phase comprising zirconium oxynitride.

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Ebermannstadt, Germany

Karl Heinz Wendt