Kennametal Inc.

Widia Gmbh

Kennametal Widia Produktions Gmbh & Co Kg

Kennametal Widia Gmbh & Co. Kg

Hartmut Westphal

Volkmar Sottke

Hendrikus Van Den Berg

Yixiong Liu

Peter Rudolf Leicht

Mark S Greenfield

Zhigang Ban

Karl Heinz Wendt

Udo Konig

Klaus Dreyer

Ralf Tabersky

Michael Frank Beblo

Doris Lenk

Thorsten Gerdes

Monika A Willert-Porada

Rodrigo Alejandro Cooper

Udo K&ouml;nig

Klaus R&ouml;diger

Udo K{overscore (o)}nig

Udo K&otilde;nig

Hendrkus Van Den Berg

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, cutting tools are described having coatings adhered thereto. A coated cutting tool, in some embodiments, comprises a substrate and a coating adhered to the substrate, the coating comprising at least one composite layer deposited by chemical vapor deposition comprising an aluminum oxynitride phase and a metal oxide phase, the metal oxide phase including at least one oxide of a metallic element selected from Group IVB of the Periodic Table.

A method for making a coated article wherein the method includes the following steps: providing a substrate; and depositing an aluminum oxynitride coating layer from a gaseous mixture. The gaseous mixture contains the following components: 30.0-65.0 volume percent nitrogen, 0.7-1.3 volume percent aluminum tri-chloride; 1.0-2.0 volume percent ammonia, 0.1-1.5 carbon dioxide, 1.5-4.5 volume percent hydrogen chloride, optional components of carbon monoxide and/or argon, and hydrogen as the balance.

Method of making aluminum oxynitride coated article

A coated cutting insert for removing material from a workpiece that includes a substrate is disclosed. A wear-resistant coating on the substrate that includes an alumina layer and a Zr- or Hf-carbonitride outer layer deposited on the alumina layer. The Zr- or Hf-carbonitride outer layer is subjected to a post-coat wet blasting treatment. The wet blasting changes the stress condition of the exposed alumina coating layer from an initial tensile stress condition to a compressive stress condition.

Coated cutting insert and method for making the same

A coated article such as a coated cutting tool or coated wear part, which includes a substrate and a coating scheme on the substrate. The coating scheme has a titanium-containing coating layer, and an aluminum oxynitride coating layer on the titanium-containing coating layer. The aluminum oxynitride includes a mixture of phases having a hexagonal aluminum nitride type structure (space group: P63mc), a cubic aluminum nitride type structure (space group: Fm-3m), and optionally amorphous structure. The aluminum oxynitride coating layer has a composition of aluminum in an amount between about 20 atomic percent and about 50 atomic percent, nitrogen in an amount between about 40 atomic percent and about 70 atomic percent, and oxygen in an amount between about 1 atomic percent and about 20 atomic percent. The method of making the coated article includes a step of providing a substrate and depositing an aluminum oxynitride coating layer from a gaseous mixture that includes nitrogen, aluminum tri-chloride, ammonia, carbon dioxide, hydrogen chloride, optionally carbon monoxide, optionally argon, and hydrogen.

Aluminum oxynitride coated article and method of making the same

The invention relates to a body which is coated with hard material and has a plurality of layers applied by means of CVD, wherein the outer layer comprises TiAlN, TiAlC and/or TiAlCN where 0.65&#x2266;x&#x2266;0.9, preferably 0.7&#x2266;x&#x2266;0.9, and this outer layer has compressive stresses in the range from 100 to 1100 MPa, preferably from 400 to 800 MPa, and a TiCN or AlOlayer is arranged under this outer layer.

Body coated with hard material

The invention relates to a body which is coated with hard material and has a plurality of layers applied by means of CVD, in which an AlOlayer is arranged as outer layer on a TiAlN layer and/or TiAlC layer and/or TiAlCN layer.

A coated cutting insert for removing material from a workpiece that includes a substrate is disclosed. A wear-resistant coating on the substrate that includes an &#x3b1;-alumina layer and a Zr&#x2014; or Hf&#x2014; carbonitride outer layer deposited on the &#x3b1;-alumina layer. The Zr&#x2014; or Hf&#x2014; carbonitride outer layer is subjected to a post-coat wet blasting treatment. The wet blasting changes the stress condition of the exposed alumina coating layer from an initial tensile stress condition to a compressive stress condition.

The invention relates to a method for producing a coated substrate body by chemical vapor deposition at least on one layer made of a carbonitride of a metal of IVa-Vla-groups of the periodic table, wherein a monocyclic hydrocarbon is used in the gas atmosphere during the deposition, in addition to a nitrile. According to the invention, the thus produced coated substrate body has a high degree of hardness and is used, preferably, in cutting operations where the cutting speeds are &#x2267;250 m/min.

Method for producing a coated substrate body, substrate body comprising a coating and use of the coated substrate body

The invention relates to a tool, especially a cutting tool, comprising a substrate member onto which at least one layer is deposited by means of CVD, and a method for the chemical vapor deposition of a two-phase layer on a sintered part. According to the invention, the single deposited layer or at least one of the layers is provided with a TiCN phase, TiOCN phase, TiOC phase, or TiC phase and an additional phase consisting of ZrOand/or HfO. CHCN, CHN, or CHis used in the gas atmosphere for producing such a layer in addition to TiCl, HfCl, and/or ZrCland CO, the remainder being composed of Hand/or Ar.

Tool and method for the chemical vapor deposition of a two-phase layer on a substrate member

A composite material has a base substrate body with first and second coatings. Each coating is formed by a multiphase layer of titanium oxide and at least two oxides from the group of aluminum, zirconium, and hafnium oxide and a second single-phase layer on the first layer consisting of only one oxide of aluminum, zirconium, and hafnium.

Composite material

A method of increasing the compressive stress or of reducing the tensile residual stress of a CVD layer, a PCVD layer or PVD layer and a cutting insert for machining. The invention relates to a method of increasing the compressive residual stress or of reducing the tensile residual stress of a hard material outer layer or a hard material outermost layer in which the coated substrate after coating is subjected to a dry blast treatment using a granular blast agent that, according to the invention, has a maximum diameter of 150 &#x3bc;m.

Method for increasing compression stress or reducing internal tension stress of a CVD, PCVD or PVD layer and cutting insert for machining

The invention relates to a composite material comprised of a coated hard metal or cermet base and to a method for the production thereof. The single layer or multilayer coating on the base contains at least one layer with a thickness ranging from 0.5 &mgr;m to 25 &mgr;m, at least one Al O phase, and at least one phase comprised of ZrO and/or HfO . According to the invention, a third finely dispersive phase comprised of an oxide, oxicarbide, oxinitride or oxicarbonitride of titanium should be included in this Al O /ZrO layer and/or HfO layer. To this end, a CVD process is used at depositing temperatures ranging from 900 &deg; C. to 1000 &deg; C. in the gas phase under pressures ran from 10 to 100000 Pa, whereby the gas phase, in addition to the gases essential for deposition, contains 0.2 to 5 mol % TiCl .

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Dermbach, Germany

Hartmut Westphal