Patents by Inventor Volker Guther
Volker Guther 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).
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Publication number: 20230046116Abstract: Disclosed is a method for the heat treatment of at least one bar made from titanium aluminide alloy for manufacturing at least one low-pressure turbine blade for a turbomachine, comprising hot isostatic pressing of the bar, characterised in that the hot isostatic pressing (121) is followed, after a temperature transition phase, by a step of heat treatment (122) of the bar at a temperature in the immediate vicinity of the eutectoid temperature of the alloy, the temperature being suitable for the formation of an alloy microstructure with a volume fraction of at least 90% single-phase grains ? and a volume fraction of at most 10% of lamellar grains ?+?, the step being followed by a controlled cooling step (123).Type: ApplicationFiled: January 29, 2021Publication date: February 16, 2023Applicant: Safran Aircraft EnginesInventors: Damien PONSEN, Guillaume Paul MARTIN, Volker GÜTHER
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Publication number: 20220339701Abstract: A device for atomizing a metallic, intermetallic or ceramic melt stream by means of a gas to form a spherical powder, comprising a melt chamber, a powder chamber, an induction coil in the melt chamber, a melt material, preferably melt rod in the induction coil and an atomizer nozzle interconnecting the melt and powder chambers and being arranged in a nozzle plate, for the melt stream melted off from the melt material by the induction coil, wherein the atomizer nozzle has an exclusively convergent nozzle profile having nozzle flanks which have a circular-arc-shaped cross-section, and therefore both the atomizing gas and the melt stream and the droplets generated therefrom reach a velocity which is at most equal to, preferably below the acoustic velocity of the atomizing gas.Type: ApplicationFiled: September 17, 2020Publication date: October 27, 2022Inventors: Volker GÜTHER, Karin RATSCHBACHER, Melissa ALLEN, Sergejs SPITANS, Henrik FRANZ
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Patent number: 8668760Abstract: A method for the production of a ?-TiAl base alloy by vacuum arc remelting, which ?-TiAl base alloy solidifies via the ?-phase (?-?-TiAl base alloy), includes the following method steps of forming a basic melting electrode by melting, in at least one vacuum arc remelting step, of a conventional ?-TiAl primary alloy containing a lack of titanium and/or of at least one ?-stabilizing element compared to the ?-?-TiAl base alloy to be produced; allocating an amount of titanium and/or ?-stabilizing element to the basic melting electrode, which amount corresponds to the reduced amount of titanium and/or ?-stabilizing element, in an even distribution across the length and periphery of the basic melting electrode; and adding the allocated amount of titanium and/or ?-stabilizing element to the basic melting electrode so as to form the homogeneous ?-?-TiAl base alloy in a final vacuum arc remelting step.Type: GrantFiled: September 28, 2010Date of Patent: March 11, 2014Assignees: GfE Metalle und Materialien GmbH, TiTAL GmbHInventors: Dipl.-Ing Matthias Achtermann, Willy Fürwitt, Volker Güther, Dipl.-Mineraloge Hans-Peter Nicolai
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Publication number: 20110219912Abstract: A method for the production of a ?-TiAl base alloy by vacuum arc remelting, which ?-TiAl base alloy solidifies via the (?-phase (?-?-TiAl base alloy), comprises the following method steps: forming a basic melting electrode by melting, in at least one vacuum arc remelting step, of a conventional ?-TiAl primary alloy containing a lack of titanium and/or of at least one (?-stabilising element compared to the (?-?-TiAl base alloy to be produced; allocating an amount of titanium and/or (?-stabilising element to the basic melting electrode, which amount corresponds to the reduced amount of titanium and/or (?-stabilising element, in an even distribution across the length and periphery of the basic melting electrode; adding the allocated amount of titanium and/or (?-stabilising element to the basic melting electrode so as to form the homogeneous (?-?-TiAl base alloy in a final vacuum arc remelting step.Type: ApplicationFiled: September 28, 2010Publication date: September 15, 2011Inventors: Dipl-Ing Matthias Achtermann, Willy Fürwitt, Volker Güther, Dipl-Mineraloge Hans-Peter Nicolai
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Publication number: 20060230876Abstract: The invention relates to a method of producing metallic and intermetallic alloy ingots by continuous or quasi-continuous billet withdrawal from a cold wall crucible, which is characterized in that the alloy material is continuously or quasi-continuously supplied in a molten and pre-homogenized state to a cold wall induction crucible.Type: ApplicationFiled: November 13, 2002Publication date: October 19, 2006Inventors: Matthias Blum, Georg Jarczyk, Anita Chatterjee, Willy Furwitt, Volker Guther, Helmut Clemens, Heinz Danker, Rainer Gerling, Friedhelm Sasse, Frank-Peter Schimansky
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Patent number: 6770377Abstract: The active brazing solder for brazing ceramic parts of alumina, particularly of high-purity alumina, contains a maximum of 12 wt. % Ti, a maximum of 8 wt. % Be, and less than 16.5 wt. % Fe, the remainder being Zr and any impurities that may be present. The active brazing solder has the following behaviour/features: Brazing temperature: lower than 1,000° C.; the brazed joint is high-vacuum-tight over a long period of time; the coefficient of thermal expansion of the active brazing alloy is substantially identical to that of the alumina ceramic in the entire temperature range covered during the brazing process; the strength of the brazed joint between the two ceramic parts is so high that under tensile loading, fracture will result not at the joint, but in the adjacent ceramic; the pressure resistance of the active brazing solder is greater than 2 GPa; the active brazing solder is very good processable into powders having particle sizes on the order of 10 &mgr;m.Type: GrantFiled: June 12, 2002Date of Patent: August 3, 2004Assignee: Endress + Hauser GmbH + Co.Inventors: Frank Hegner, Elke Maria Schmidt, Volker Güther, Anobecs Allo, Jürgen Breme, Heinz Müller, Jürgen Peter Turnsek
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Patent number: 6752881Abstract: In a metalliferous storage material for hydrogen a metal oxide is provided in or on the surface of the metalliferous materialas a catalyst for the hydrogenation or dehydrogenation of the metalliferous storage material.Type: GrantFiled: September 25, 2001Date of Patent: June 22, 2004Assignee: GKSS-Forschungszentrum Geesthacht GmbHInventors: Thomas Klassen, Rüdiger Bormann, Wolfgang Oelerich, Volker Güther, Andreas Otto
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Publication number: 20040045644Abstract: The invention relates to a component produced in one piece from an intermetallic &ggr;-TiAl-based alloy with graduated microstructure transition between spatially adjacent areas each of different microstructure structure, which has a lamellar cast microstructure composed of &agr;2/&ggr; lamellae in at least one area, and a near-&ggr; microstructure, duplex microstructure or fine-lamellar microstructure in at least one other area, and a transition zone with graduated microstructure, in which the lamellar cast microstructure gradually changes into the other named microstructure, is present between these areas, as well as to a process for its production.Type: ApplicationFiled: February 19, 2003Publication date: March 11, 2004Inventors: Volker Guther, Andreas Otto, Helmut Clemens
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Publication number: 20030167923Abstract: The invention relates to a tank for the reversible storage of hydrogen, comprising an external pressure casing, a hydrogen-storage alloy contained therein, a heat-exchange system and a hydrogen-gas reservoir, which is characterized in that, for the absorption of the hydrogen-storage alloy, the tank has a bed which consists of an open-pored metal sponge connected to the pressure-vessel wall in a material fit.Type: ApplicationFiled: December 23, 2002Publication date: September 11, 2003Inventors: Frank Grote, Peter Busse, Volker Guther, Andreas Otto
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Publication number: 20030013605Abstract: In a storage structure comprising storage material for storing hydrogen by hydrogenation of, and releasing hydrogen by dehydrogenation from the storage material, the storage material consists of a metal, a metal alloy, an inter-metallic phase or a compound material which forms with hydrogen a metal hydride, the storage structure includes a catalyst in the form of a metal nitride or a metal carbide uniformly distributed throughout the storage material.Type: ApplicationFiled: July 19, 2002Publication date: January 16, 2003Inventors: Thomas Klassen, Rudiger Bormann, Wolfgang Oelerich, Volker Guther
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Publication number: 20020155020Abstract: The active brazing solder for brazing ceramic parts of alumina, particularly of high-purity alumina, contains a maximum of 12 wt. % Ti, a maximum of 8 wt. % Be, and less than 16.5 wt. % Fe, the remainder being Zr and any impurities that may be present. The active brazing solder has the following behaviour/features: Brazing temperature: lower than 1,000 ° C.; the brazed joint is high-vacuum-tight over a long period of time; the coefficient of thermal expansion of the active brazing alloy is substantially identical to that of the alumina ceramic in the entire temperature range covered during the brazing process; the strength of the brazed joint between the two ceramic parts is so high that under tensile loading, fracture will result not at the joint, but in the adjacent ceramic; the pressure resistance of the active brazing solder is greater than 2 GPa; the active brazing solder is very good processable into powders having particle sizes on the order of 10 &mgr;m.Type: ApplicationFiled: June 12, 2002Publication date: October 24, 2002Applicant: Endress + Hauser GmbH + Co., GFE Metalle und Materialien GmbH, and Prof. Dr. Jurgen BremeInventors: Frank Hegner, Elke Maria Schmidt, Volker Guther, Anobecs Allo, Jurgen Breme, Heinz Muller, Jurgen Peter Turnsek
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Patent number: 6427900Abstract: The active brazing solder for brazing ceramic parts of alumina, particularly of high-purity alumina, contains a maximum of 12 wt. % Ti, a maximum of 8 wt. % Be, and less than 16.5 wt. % Fe, the remainder being Zr and any impurities that may be present. The active brazing solder has the following behaviour/features: Brazing temperature: lower than 1,000° C.; the brazed joint is high-vacuum-tight over a long period of time; the coefficient of thermal expansion of the active brazing alloy is substantially identical to that of the alumina ceramic in the entire temperature range covered during the brazing process; the strength of the brazed joint between the two ceramic parts is so high that under tensile loading, fracture will result not at the joint, but in the adjacent ceramic; the pressure resistance of the active brazing solder is greater than 2 GPa; the active brazing solder is very good processable into powders having particle sizes on the order of 10 &mgr;m.Type: GrantFiled: December 7, 1999Date of Patent: August 6, 2002Assignee: Endress + Hauser GmbH + Co.Inventors: Frank Hegner, Elke Maria Schmidt, Volker Güther, Andreas Otto, Jürgen Breme, Heinz Müller, Jürgen Peter Turnsek
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Publication number: 20020061814Abstract: In a metalliferous storage material for hydrogen a metal oxide is provided in or on the surface of the metalliferous material as a catalyst for the hydrogenation or dehydrogenation of the metalliferous storage material.Type: ApplicationFiled: September 25, 2001Publication date: May 23, 2002Inventors: Thomas Klassen, Rudiger Bormann, Wolfgang Oelerich, Volker Guther, Andreas Otto
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Patent number: 6387152Abstract: In a process of producing nanocrystalline metal hydrides, an elemental metal hydride of a first kind is subjected to a mechanical milling process with at least one elemental metal or at least one additional metal hydride to produce an alloy hydride.Type: GrantFiled: June 14, 2000Date of Patent: May 14, 2002Assignee: GKSS Forschungszentrum Geesthacht GmbHInventors: Thomas Klassen, Wolfgang Oelerich, Rüdiger Bormann, Volker Güther
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Publication number: 20020041994Abstract: In a metalliferous electrode material and a method of making the material, the metalliferous electrode material includes a metal oxide as a catalyst for its hydrogenation and dehydrogenation which metal oxide is intensely mixed with the electrode material by mechanical grinding of the two compounds.Type: ApplicationFiled: September 26, 2001Publication date: April 11, 2002Inventors: Wolfgang Oelerich, Thomas Klassen, Volker Guther, Andreas Otto, Rudiger Bormann
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Patent number: 6039918Abstract: The active brazing solder for brazing ceramic parts of alumina, particularly of high-purity alumina, contains a maximum of 12 wt. % Ti, a maximum of 8 wt. % Be, and less than 16.5 wt. % Fe, the remainder being Zr and any impurities that may be present. The active brazing solder has the following behaviour/features: Brazing temperature: lower than 1,000.degree. C.; the brazed joint is high-vacuum-tight over a long period of time; the coefficient of thermal expansion of the active brazing alloy is substantially identical to that of the alumina ceramic in the entire temperature range covered during the brazing process; the strength of the brazed joint between the two ceramic parts is so high that under tensile loading, fracture will result not at the joint, but in the adjacent ceramic; the pressure resistance of the active brazing solder is greater than 2 GPa; the active brazing solder is very good processable into powders having particle sizes on the order of 10 .mu.m.Type: GrantFiled: July 18, 1997Date of Patent: March 21, 2000Assignees: Endress + Hauser GmbH + Co., GFE Metalle und Materialien GmbH, Jurgen BremeInventors: Frank Hegner, Elke Maria Schmidt, Volker Guther, Andreas Otto, Jurgen Breme, Heinz Muller, Jurgen Peter Turnsek