Patents by Inventor Hartmut Westphal

Hartmut Westphal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9994717
    Abstract: 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 Ti1-xMex nitride 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 Ti1-xMex nitride 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.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: June 12, 2018
    Assignee: KENNAMETAL INC.
    Inventors: Volkmar Sottke, Hartmut Westphal, Karl H. Wendt, Peter R. Leicht, Rodrigo A. Cooper, Yixiong Liu
  • Publication number: 20160298233
    Abstract: 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 Ti1-xMex nitride 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 Ti1-xMex nitride 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.
    Type: Application
    Filed: April 13, 2015
    Publication date: October 13, 2016
    Inventors: Volkmar Sottke, Hartmut Westphal, Karl H. Wendt, Peter R. Leicht, Rodrigo A. Cooper, Yixiong Liu
  • Patent number: 9427808
    Abstract: 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 (Al2O3) sublayer or composite alumina sublayer.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: August 30, 2016
    Assignee: KENNAMETAL INC.
    Inventors: Volkmar Sottke, Karl Heinz Wendt, Hartmut Westphal, Peter Leicht, Yixiong Liu
  • Patent number: 9181620
    Abstract: 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 ZrAl2O3.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: November 10, 2015
    Assignee: KENNAMETAL INC.
    Inventors: Karl Heinz Wendt, Volkmar Sottke, Peter Rudolf Leicht, Yixiong Liu, Mark S. Greenfield, Hartmut Westphal
  • Patent number: 9017809
    Abstract: 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.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: April 28, 2015
    Assignee: Kennametal Inc.
    Inventors: Volkmar Sottke, Doris Lenk, Hartmut Westphal, Hendrikus Van Den Berg, Peter Leicht, Mark Greenfield, Yixiong Liu
  • Publication number: 20150064431
    Abstract: 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 (Al2O3) sublayer or composite alumina sublayer.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 5, 2015
    Applicant: Kennametal Inc.
    Inventors: Volkmar Sottke, Karl Heinz Wendt, Hartmut Westphal, Peter Leicht, Yixiong Liu
  • Publication number: 20140287229
    Abstract: 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 ZrAl2O3.
    Type: Application
    Filed: March 20, 2014
    Publication date: September 25, 2014
    Applicant: Kennametal Inc.
    Inventors: Karl Heinz Wendt, Volkmar Sottke, Peter Rudolf Leicht, Yixiong Liu, Mark S. Greenfield, Hartmut Westphal
  • Patent number: 8828492
    Abstract: 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.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: September 9, 2014
    Assignee: Kennametal Inc.
    Inventors: Volkmar Sottke, Hartmut Westphal, Hendrikus Van Den Berg, Zhigang Ban, Yixiong Liu, Mark S. Greenfield
  • Publication number: 20140208659
    Abstract: 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.
    Type: Application
    Filed: January 25, 2013
    Publication date: July 31, 2014
    Applicant: Kennametal Inc.
    Inventors: Volkmar Sottke, Doris Lenk, Hartmut Westphal, Hendrikus Van Den Berg, Peter Leicht, Mark Greenfield, Yixiong Liu
  • Patent number: 8668982
    Abstract: 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.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: March 11, 2014
    Assignee: Kennametal Inc.
    Inventors: Peter Leicht, Mark Greenfield, Volkmar Sottke, Zhigang Ban, Hartmut Westphal, Yixiong Liu, Michael Frank Beblo
  • Publication number: 20130302521
    Abstract: 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.
    Type: Application
    Filed: June 3, 2013
    Publication date: November 14, 2013
    Applicant: Kennametal Inc.
    Inventors: Volkmar Sottke, Hartmut Westphal, Hendrikus Van Den Berg, Zhigang Ban, Yixiong Liu, Mark S. Greenfield
  • Patent number: 8574728
    Abstract: 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.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: November 5, 2013
    Assignee: Kennametal Inc.
    Inventors: Volkmar Sottke, Hartmut Westphal, Hendrkus Van Den Berg, Zhigang Ban, Yixiong Liu, Mark S. Greenfield
  • Patent number: 8394513
    Abstract: 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 Ti1-xAlxN, Ti1-xAlxC and/or Ti1-xAlxCN where 0.65?x?0.9, preferably 0.7?x?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 Al2O3 layer is arranged under this outer layer.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: March 12, 2013
    Assignee: Kennametal Inc.
    Inventors: Hendrikus Van Den Berg, Hartmut Westphal, Volkmar Sottke
  • Patent number: 8389134
    Abstract: 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 Al2O3 layer is arranged as outer layer on a Ti1-xAlxN layer and/or Ti1-xAlxC layer and/or Ti1-xAlxCN layer.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: March 5, 2013
    Assignee: Kennametal Inc.
    Inventors: Hendrikus Van Den Berg, Hartmut Westphal, Volkmar Sottke
  • Patent number: 8323783
    Abstract: 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.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: December 4, 2012
    Assignee: Kennametal Inc.
    Inventors: Volkmar Sottke, Zhigang Ban, Hartmut Westphal, Yixiong Liu, Michael Frank Beblo
  • Publication number: 20120237794
    Abstract: 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.
    Type: Application
    Filed: March 15, 2011
    Publication date: September 20, 2012
    Applicant: Kennametal Inc.
    Inventors: Volkmar Sottke, Hartmut Westphal, Hendrikus Van Den Berg, Zhigang Ban, Yixiong Liu, Mark S. Greenfield
  • Publication number: 20120128955
    Abstract: 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.
    Type: Application
    Filed: November 18, 2011
    Publication date: May 24, 2012
    Applicant: Kennametal Inc.
    Inventors: Peter Leicht, Mark Greenfield, Volkmar Sottke, Zhigang Ban, Hartmut Westphal, Yixiong Liu, Michael Frank Beblo
  • Patent number: 8012535
    Abstract: 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 ?250 m/min.
    Type: Grant
    Filed: October 7, 2006
    Date of Patent: September 6, 2011
    Assignee: Kennametal Widia Produktions GmbH & Co KG
    Inventors: Volkmar Sottke, Doris Lenk, Hartmut Westphal, Hendrikus Van Den Berg
  • Publication number: 20110107679
    Abstract: 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.
    Type: Application
    Filed: November 10, 2009
    Publication date: May 12, 2011
    Applicant: KENNAMETAL INC.
    Inventors: Volkmar Sottke, Zhigang Ban, Hartmut Westphal, Yixiong Liu, Michael Frank Beblo
  • Publication number: 20110003126
    Abstract: 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 Ti1-xAlxN, Ti1-xAlxC and/or Ti1-xAlxCN where 0.65?x?0.9, preferably 0.7?x?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 Al2O3 layer is arranged under this outer layer.
    Type: Application
    Filed: January 20, 2009
    Publication date: January 6, 2011
    Inventors: Hendrikus Van Den Berg, Hartmut Westphal, Volkmar Sottke