Patents by Inventor Mohamed Youssef Nazmy
Mohamed Youssef Nazmy 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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Patent number: 9017605Abstract: A nickel-base superalloy is characterized by the following chemical composition (details in % by weight): 7.7-8.3 Cr, 5.0-5.25 Co, 2.0-2.1 Mo, 7.8-8.3 W, 5.8-6.1 Ta, 4.9-5.1 Al, 1.0-1.5 Ti, 1.0-2.0 Re, 0.11-0.15 Si, 0.1-0.7 Hf, 0-0.5 Nb, 0.02-0.17 C, 50-400 ppm B, remainder Ni and production-related impurities. The alloy is distinguished by a very high resistance to oxidation, resistance to corrosion and good creep properties at high temperatures.Type: GrantFiled: December 21, 2011Date of Patent: April 28, 2015Assignee: Alstom Technology Ltd.Inventors: Mohamed Youssef Nazmy, Andreas Kuenzler, Claus Paul Gerdes
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Patent number: 8906296Abstract: The present invention relates to an oxidation resistant Nickel alloy, characterized in the following chemical composition (in % by weight): 4-7 Cr, 4-5 Si, 0.1-0.2 Y, 0.1-0.2 Mg, 0.1-0.2 Hf, remainder Ni and unavoidable impurities. A preferred embodiment has the following chemical composition (in % by weight): 6 Cr, 4.4 Si, 0.1 Y, 0.15 Mg, 0.1 Hf, remainder Ni and unavoidable impurities. This alloy has an improved oxidation resistance and good creep properties at high temperatures.Type: GrantFiled: August 16, 2013Date of Patent: December 9, 2014Assignee: ALSTOM Technology LtdInventors: Mohamed Youssef Nazmy, Andreas Künzler, Hanspeter Zinn, Giuseppe Bandiera
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Publication number: 20140050609Abstract: The present invention relates to an oxidation resistant Nickel alloy, characterized in the following chemical composition (in % by weight): 4-7 Cr, 4-5 Si, 0.1-0.2 Y, 0.1-0.2 Mg, 0.1-0.2 Hf, remainder Ni and unavoidable impurities. A preferred embodiment has the following chemical composition (in % by weight): 6 Cr, 4.4 Si, 0.1 Y, 0.15 Mg, 0.1 Hf, remainder Ni and unavoidable impurities. This alloy has an improved oxidation resistance, good creep properties at high temperatures and.Type: ApplicationFiled: August 16, 2013Publication date: February 20, 2014Applicant: ALSTOM Technology LtdInventors: Mohamed Youssef NAZMY, Andreas Künzler, Hanspeter Zinn, Giuseppe Bandiera
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Patent number: 8435443Abstract: An iron-based high-temperature alloy has the following chemical composition (values given being in % by weight): 20 Cr, 4 to 8 Al, at least one of the elements Ta and Mo with a sum of 4 to 8, 0-0.2 Zr, 0.02-0.05 B, 0.1-0.2 Y, 0-0.5 Si, remainder Fe. The alloy can be produced at low cost and is distinguished in comparison with the known prior art by outstanding oxidation resistance and good mechanical properties at high temperatures up to 1000° C.Type: GrantFiled: August 28, 2008Date of Patent: May 7, 2013Assignee: ALSTOM Technology Ltd.Inventors: Mohamed Youssef Nazmy, Andreas Kuenzler, Markus Staubli
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Publication number: 20120187093Abstract: A filler material for welding is characterized by the following chemical composition (amounts in % by weight): 0.05-0.15 C, 8-11 Cr, 2.8-6 Ni, 0.5-1.9 Mo, 0.5-1.5 Mn, 0.15-0.5 Si, 0.2-0.4 V, 0-0.04 B, 1-3 Re, 0.001-0.07 Ta, 0.01-0.06 N, 0-60 ppm Pd, max. 0.25 P, max. 0.02 S, remainder Fe and manufacturing-related unavoidable impurities. The material has outstanding properties, in particular a good creep rupture strength/creep resistance, a good oxidation resistance and a very high toughness.Type: ApplicationFiled: January 10, 2012Publication date: July 26, 2012Inventors: Mohamed Youssef Nazmy, Claus Paul Gerdes, Andreas Kuenzler, Sorin Keller
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Publication number: 20120128527Abstract: A nickel-base superalloy is characterized by the following chemical composition (details in % by weight): 7.7-8.3 Cr, 5.0-5.25 Co, 2.0-2.1 Mo, 7.8-8.3 W, 5.8-6.1 Ta, 4.9-5.1 Al, 1.0-1.5 Ti, 1.0-2.0 Re, 0.11-0.15 Si, 0.1-0.7 Hf, 0-0.5 Nb, 0.02-0.17 C, 50-400 ppm B, remainder Ni and production-related impurities. The alloy is distinguished by a very high resistance to oxidation, resistance to corrosion and good creep properties at high temperatures.Type: ApplicationFiled: December 21, 2011Publication date: May 24, 2012Inventors: Mohamed Youssef NAZMY, Andreas KUENZLER, Claus Paul GERDES
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Patent number: 8048368Abstract: High-temperature materials, based on alloyed intermetallic NiAl, have the following chemical composition (values in % by weight): 26-30 Al, 1-6 Ta, 0.1-3 Fe, 0.1-1.5 Hf, 0.01-0.2 B, 0-1 Ti, 0.1-5 Pd, with the remainder Ni and production-related impurities. The materials have excellent properties, in particular good strength and extremely high oxidation resistance, at very high temperatures of 1300° C., for example.Type: GrantFiled: November 20, 2009Date of Patent: November 1, 2011Assignee: ALSTOM Technology Ltd.Inventors: Mohamed Youssef Nazmy, Markus Staubli, Andreas Künzler
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Patent number: 7938919Abstract: A heat treatment method for a nickel-based superalloy, in particular for the production of single-crystal components or directionally solidified components having a chemical composition permits full solution annealing at a temperature T1, the method comprising: partially solution annealing in a controlled manner at a temperature T2<T1 in a first step so as to obtain 5-10% of undissolved ?? phase in a residual eutectic; and performing a two-stage ageing treatment at respectively lower temperatures in a second step. As a function of the selected level of the partial solution annealing temperature, the proportion of the undissolved ?? phase can be adjusted in a controlled way, and the tolerance with respect to the disorientation of small-angle grain boundaries/grain boundaries can be increased.Type: GrantFiled: September 7, 2007Date of Patent: May 10, 2011Assignee: Alstom Technology LtdInventors: Mohamed Youssef Nazmy, Markus Staubli, Andreas Kuenzler
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Publication number: 20100129256Abstract: High-temperature materials, based on alloyed intermetallic NiAl, have the following chemical composition (values in % by weight): 26-30 Al, 1-6 Ta, 0.1-3 Fe, 0.1-1.5 Hf, 0.01-0.2 B, 0-1 Ti, 0.1-5 Pd, with the remainder Ni and production-related impurities. The materials have excellent properties, in particular good strength and extremely high oxidation resistance, at very high temperatures of 1300° C., for example.Type: ApplicationFiled: November 20, 2009Publication date: May 27, 2010Inventors: Mohamed Youssef Nazmy, Markus Staubli, Andreas Künzler
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Publication number: 20100104764Abstract: A ceramic thermal barrier coating (8) for coating the surface (7) of a component (1) of a nickel-based superalloy, and an adhesive coating optionally applied thereon (6), preferably a gas turbine component, includes zirconium oxide (ZrO2) stabilized by yttrium oxide (Y2O3) and production-related impurities, as well as at least one high-temperature and oxidation resistant intermetallic compound, for example NiAl, YRh, ErIr, the volume fraction of which decreases continuously or in stages as the distance from the surface (7) of the component (1)/the adhesive coating (6) increases. Advantageously, a less steep stress gradient is produced by gradually varying the composition of the thermal barrier coating (8).Type: ApplicationFiled: January 4, 2010Publication date: April 29, 2010Inventor: Mohamed Youssef Nazmy
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Patent number: 7666516Abstract: A ceramic thermal barrier coating (8) for coating the surface (7) of a component (1) of a nickel-based superalloy, and an adhesive coating optionally applied thereon (6), preferably a gas turbine component, includes zirconium oxide (ZrO2) stabilized by yttrium oxide (Y2O3) and production-related impurities, as well as at least one high-temperature and oxidation resistant intermetallic compound, for example NiAl, YRh, ErIr, the volume fraction of which decreases continuously or in stages as the distance from the surface (7) of the component (1)/the adhesive coating (6) increases. Advantageously, a less steep stress gradient is produced by gradually varying the composition of the thermal barrier coating (8).Type: GrantFiled: January 4, 2008Date of Patent: February 23, 2010Assignee: ALSTOM Technology Ltd.Inventor: Mohamed Youssef Nazmy
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Publication number: 20090060774Abstract: An iron-based high-temperature alloy has the following chemical composition (values given being in % by weight): 20 Cr, 4 to 8 Al, at least one of the elements Ta and Mo with a sum of 4 to 8, 0-0.2 Zr, 0.02-0.05 B, 0.1-0.2 Y, 0-0.5 Si, remainder Fe. The alloy can be produced at low cost and is distinguished in comparison with the known prior art by outstanding oxidation resistance and good mechanical properties at high temperatures up to 1000° C.Type: ApplicationFiled: August 28, 2008Publication date: March 5, 2009Inventors: Mohamed Youssef Nazmy, Andreas Kuenzler, Markus Staubli
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Publication number: 20080241560Abstract: A ceramic thermal barrier coating (8) for coating the surface (7) of a component (1) of a nickel-based superalloy, and an adhesive coating optionally applied thereon (6), preferably a gas turbine component, includes zirconium oxide (ZrO2) stabilized by yttrium oxide (Y2O3) and production-related impurities, as well as at least one high-temperature and oxidation resistant intermetallic compound, for example NiAl, YRh, ErIr, the volume fraction of which decreases continuously or in stages as the distance from the surface (7) of the component (1)/the adhesive coating (6) increases. Advantageously, a less steep stress gradient is produced by gradually varying the composition of the thermal barrier coating (8).Type: ApplicationFiled: January 4, 2008Publication date: October 2, 2008Inventor: Mohamed Youssef Nazmy
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Publication number: 20080112814Abstract: A heat treatment method for a nickel-based superalloy, in particular for the production of single-crystal components or directionally solidified components having a chemical composition permits full solution annealing at a temperature T1, the method comprising: partially solution annealing in a controlled manner at a temperature T2<T1 in a first step so as to obtain 5-10% of undissolved ?? phase in a residual eutectic; and performing a two-stage ageing treatment at respectively lower temperatures in a second step. As a function of the selected level of the partial solution annealing temperature, the proportion of the undissolved ?? phase can be adjusted in a controlled way, and the tolerance with respect to the disorientation of small-angle grain boundaries/grain boundaries can be increased.Type: ApplicationFiled: September 7, 2007Publication date: May 15, 2008Applicant: ALSTOM TECHNOLOGY LTDInventors: Mohamed Youssef Nazmy, Markus Staubli, Andreas Kuenzler