Patents by Inventor Willem Quadakkers

Willem Quadakkers 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).

  • Heat-resistant iron-chromium-aluminum alloy with low chromium vaporization rate and elevated thermal stability
    Patent number: 10196721
    Abstract: An iron-chromium-aluminum alloy with improved heat resistance, low chromium vaporization rate and good processability, comprising (in % by mass), 2.0 to 4.5% Al, 12 to 25% Cr, 1.0 to 4% W, 0.25 to 2.0% Nb, 0.05 to 1.2% Si, 0.001 to 0.70% Mn, 0.001 to 0.030% C, 0.0001 to 0.05% Mg, 0.0001 to 0.03% Ca, 0.001 to 0.030% P, max. 0.03% N, max. 0.01% S, remainder iron and the usual melting-related impurities.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: February 5, 2019
    Assignee: VDM Metals International GmbH
    Inventors: Heike Hattendorf, Bernd Kuhn, Thomas Eckardt, Tilmann Beck, Willem Quadakkers, Werner Theisen, Nilofar Nabiran
  • Component with a protective layer
    Publication number: 20080026242
    Abstract: The invention relates to a component having a substrate and a protective layer, which consists of an intermediate NiCoCrAlY layer zone on or near the substrate and an outer layer zone which is arranged on the intermediate NiCoCrAlY layer zone, which is characterized in that the intermediate NiCoCrAlY layer zone comprises of (in wt %): 24-26% Co, 16-18% Cr, 9.5-11% Al, 0.3-0.5 Y, 1-1.8% Re and Ni balance.
    Type: Application
    Filed: March 19, 2007
    Publication date: January 31, 2008
    Inventors: Willem Quadakkers, Werner Stamm
  • Highly oxidation resistant component
    Publication number: 20050238893
    Abstract: An oxidation resistant component is disclosed comprising a substrate and a protective layer. The protective layer consists of an inner MCrAlY layer contiguous with the substrate and an outer layer. The outer layer is characterized by having an Al content of up to 6.5 wt. % and having the structure of a pure ?-Ni phase.
    Type: Application
    Filed: July 3, 2003
    Publication date: October 27, 2005
    Inventors: Willem Quadakkers, Werner Stamm
  • Highly oxidation resistant component
    Publication number: 20050238907
    Abstract: An oxidation resistant component is disclosed comprising a substrate and a protective layer.
    Type: Application
    Filed: July 3, 2003
    Publication date: October 27, 2005
    Inventors: Willem Quadakkers, Werner Stamm
  • Mcral layer
    Publication number: 20050164026
    Abstract: MCrAl layers according to prior art often display chipping of the thermally grown aluminum oxide layer (TGO) as a result of thermally induced stresses, which significantly reduces the oxidation behavior or the bonding behavior of ceramic heat insulating layers. An inventive MCrAl layer is designed in such a way that the TGO created thereon is microporous and thus allows expansion. The microporosity of the TGO is ensured by adding elements into the MCrAl layer in a targeted manner.
    Type: Application
    Filed: May 21, 2003
    Publication date: July 28, 2005
    Inventors: Willem Quadakkers, Werner Stamm
  • Component covered with a layer and method of producing such a layer
    Patent number: 6723176
    Abstract: In a method of producing on the surface of a component which consists of a titanium alloy or an intermetallic phase on the basis of titanium, a protective layer (according to the formula Ti5,0−xAgx+yAl3,0−yO2), a mixture of Ti powder and TiO2 powder, which has been sintered, is applied to the surfaces of the component or, if the titanium alloy includes 40-60 at % Al, a coating of silver is applied to the component and the component is then heat treated at 500 to 900° C. to form the protective layer on its surfaces.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: April 20, 2004
    Assignee: Forschungs zentrum Jülich GmbH
    Inventors: Willem Quadakkers, Vladimir Shemet, Lorenz Singheiser
  • Component covered with a layer and method of producing such a layer
    Publication number: 20020119066
    Abstract: In a method of producing on the surface of a component which consists of a titanium alloy or an intermetallic phase on the basis of titanium, a protective layer (according to the formula Ti5,0−xAgx+yAl3,0−yO2), a mixture of Ti powder and TiO2 powder, which has been sintered, is applied to the surfaces of the component or, if the titanium alloy includes 40-60 at % Al, a coating of silver is applied to the component and the component is then heat treated at 500 to 900° C. to form the protective layer on its surfaces.
    Type: Application
    Filed: April 12, 2002
    Publication date: August 29, 2002
    Inventors: Willem Quadakkers, Vladimir Shemet, Lorenz Singheiser
  • Metallic bipolar plate for high-temperature fuel cells and method of making same
    Patent number: 5733682
    Abstract: A metallic bipolar plate for a high-temperature fuel cell, the plate being a metal body having surfaces adapted to contact electrodes of the fuel cell and passages having walls confining gases, including fuel and oxidizing gases, for the fuel cell, the body being composed of a chromium-containing alloy oxidizable at the surfaces to form chromium oxide at interfaces between the bipolar plate and the electrodes, the alloy being enriched with aluminum at least in regions of the walls in direct contact with the gases.
    Type: Grant
    Filed: September 17, 1996
    Date of Patent: March 31, 1998
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Willem Quadakkers, Ferdinand Baumanns, Hubertus Nickel