Patents by Inventor Daniel Charquet

Daniel Charquet 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: 7985373
    Abstract: The invention concerns an alloy containing equally 0.02 to 0.07% wt. % of the total iron, of chromium or vanadium, 0.8 to 1.3 wt. % of niobium, 100 ppm or less of tin, 1100 to 1700 ppm of oxygen, less than 100 ppm of carbon, 10 to 30 ppm of sulphur and less than 50 ppm of silicon.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: July 26, 2011
    Assignee: Framatome ANP
    Inventors: Jean-Paul Mardon, Jean Senevat, Daniel Charquet
  • Publication number: 20110158374
    Abstract: The invention concerns an alloy containing equally 0.02 to 0.07% wt. % of the total iron, of chromium or vanadium, 0.8 to 1.3 wt. % of niobium, 100 ppm or less of tin, 1100 to 1700 ppm of oxygen, less than 100 ppm of carbon, 10 to 30 ppm of sulphur and less than 50 ppm of silicon.
    Type: Application
    Filed: December 3, 2003
    Publication date: June 30, 2011
    Inventors: Jean-Paul Mardon, Jean Senevat, Daniel Charquet
  • Patent number: 7627075
    Abstract: The invention proposes a zirconium-based alloy also containing, by weight, apart from unavoidable impurities, from 0.02 to 1% of iron, from 0.8% to 2.3% of niobium, less than 2000 ppm of tin, less than 2000 ppm of oxygen, less than 80 ppm of carbon, from 5 to 35 ppm of sulphur and less than 0.25% in total of chromium and/or vanadium, the ratio R of the niobium content less 0.5% to the iron content, optionally supplemented by the chromium and/or vanadium content, being lower than 3.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: December 1, 2009
    Assignee: Framatome ANP
    Inventors: Daniel Charquet, Jean-Paul Mardon, Jean Senevat
  • Patent number: 7364631
    Abstract: The alloy contains, by weight, at least 95% zirconium and from 0.01 to 0.1% sulphur and, optionally, at least one element from the group consisting of the elements tin, iron, chromium, hafnium, niobium, nickel, oxygen and vanadium, the balance of the alloy consisting of inevitable impurities. The sulphur is present in the alloy in the dissolved state, thereby improving the creep strength and in the form of uniformly distributed fine precipitates, thereby improving the corrosion and hydriding resistance. The alloy may be heated by a solution annealing treatment in the ? phase followed by a quench or by a soak at a temperature below 950° C. in order to transform it into the ? or ?+? phase.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: April 29, 2008
    Assignee: Compagnie Europeenne du Zirconium Cezus
    Inventor: Daniel Charquet
  • Publication number: 20050205175
    Abstract: The alloy contains, by weight, at least 95% zirconium and from 0.01 to 0.1% sulphur and, optionally, at least one element from the group consisting of the elements tin, iron, chromium, hafnium, niobium, nickel, oxygen and vanadium, the balance of the alloy consisting of inevitable impurities. The sulphur is present in the alloy in the dissolved state, thereby improving the creep strength and in the form of uniformly distributed fine precipitates, thereby improving the corrosion and hydriding resistance. The alloy may be heated by a solution annealing treatment in the ? phase followed by a quench or by a soak at a temperature below 950° C. in order to transform it into the ? or ?+? phase.
    Type: Application
    Filed: February 25, 2005
    Publication date: September 22, 2005
    Inventor: Daniel Charquet
  • Patent number: 6884304
    Abstract: The alloy contains, by weight, at least 95% zirconium and from 0.01 to 0.1% sulphur and, optionally, at least one element from the group consisting of the elements tin, iron, chromium, hafnium, niobium, nickel, oxygen and vanadium, the balance of the alloy consisting of inevitable impurities. The sulphur is present in the alloy in the dissolved state, thereby improving the creep strength and in the form of uniformly distributed fine precipitates, thereby improving the corrosion and hydriding resistance. The alloy may be heated by a solution annealing treatment in the ? phase followed by a quench or by a soak at a temperature below 950° C. in order to transform it into the ? or ?+? phase.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: April 26, 2005
    Assignee: Compagnie Europeenne du Zircomum CEZUS
    Inventor: Daniel Charquet
  • Publication number: 20050061408
    Abstract: The invention proposes a zirconium-based alloy also containing, by weight, apart from unavoidable impurities, from 0.02 to 1% of iron, from 0.8% to 2.3% of niobium, less than 2000 ppm of tin, less than 2000 ppm of oxygen, less than 80 ppm of carbon, from 5 to 35 ppm of sulphur and less than 0.25% in total of chromium and/or vanadium, the ratio R of the niobium content less 0.5% to the iron content, optionally supplemented by the chromium and/or vanadium content, being lower than 3.
    Type: Application
    Filed: July 6, 2004
    Publication date: March 24, 2005
    Inventors: Daniel Charquet, Jean-Paul Mardon, Jean Senevat
  • Patent number: 6863745
    Abstract: The invention proposes a zirconium-based alloy also containing, by weight, apart from unavoidable impurities, from 0.02 to 1% of iron having from 0.8% to 2.3% of niobium, less than 2000 ppm of tin, less than 2000 ppm of oxygen, less than 100 ppm of carbon, from 5 to 35 ppm of sulphur and from 0.01% to 0.25% in total of chromium and/or vanadium, the ratio R of the niobium content, less 0.5%, to the iron content, optionally supplemented by the chromium and/or vanadium content.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: March 8, 2005
    Assignees: Framatome ANP, Compagnie Europeenne du Zirconium CEZUS
    Inventors: Daniel Charquet, Jean Paul Mardon, Jean Senevat
  • Publication number: 20040118491
    Abstract: The invention concerns a method for making tubes designed for a nuclear fuel pencil case or guide tube which consists in forming a bar in a zirconium based alloy containing equally 0.3 to 0.25 wt. % of the total iron, of chromium or vanadium, 0.8 to 1.3 wt. % of niobium, less than 2000 ppm of tin, 500 to 2000 ppm of oxygen, less than 100 ppm of carbon, 5 to 30 ppm of sulphur and less than 50 ppm of silicon. The bar is soaked in water after being heated at a temperature between 1000° C. and 1200° C. A blank is spun after being heated at a temperature between 600° C. and 800° C. The blank is cold-rolled, in at least three of four passes, to obtain a tube with intermediate heat treatments between 560° C. and 620° C. and s final heat treatment is carried out between 560° C. and 620° C. in inert atmosphere or under vacuum.
    Type: Application
    Filed: December 3, 2003
    Publication date: June 24, 2004
    Inventors: Jean-Paul Mardon, Jean Senevat, Daniel Charquet
  • Patent number: 5940464
    Abstract: A zirconium alloy tube for forming the whole or the outer portion of a nuclear fuel pencil housing or a nuclear fuel assembly guide tube. The zirconium alloy contains 0.8-1.8 wt. % of niobium, 0.2-0.6 wt. % of tin and 0.02-0.4 wt. % of iron, and has a carbon content of 30-180 ppm, a silicon content of 10-120 ppm and an oxygen content of 600-1800 ppm. The tube may be used when recrystallized or stress relieved.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: August 17, 1999
    Assignees: Framatome, Compagnie Generale des Matieres Nucleaires
    Inventors: Jean-Paul Mardon, Jean Senevat, Daniel Charquet
  • Patent number: 5887045
    Abstract: A tube of zirconium-based alloy for constituting all or a portion of a cladding or guide tube for a nuclear fuel assembly. The tube is made of an alloy containing, by weight, 1.0-1.7% of tin, 0.55-0.80% of iron, 0.20-0.60% total of chromium and/or vanadium, and 0.10-0.18% of oxygen, with 50-200 ppm of carbon and 50-120 ppm of silicon. The alloy further contains only zirconium and unavoidable impurities, and it is completely recrystallized.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: March 23, 1999
    Assignees: Framatome, Compagnie General des Matieres Nucleaires
    Inventors: Jean-Paul Mardon, Jean Senevat, Daniel Charquet
  • Patent number: 5832050
    Abstract: The alloy has a base composition similar to that of a zirconium alloy of known type used for the manufacture of an element intended for use in the core of a nuclear reactor, such as a cladding tube, a guide tube, or another structural element of a fuel assembly. In addition, the alloy contains sulphur in a proportion by weight of between 8 and 100 ppm and preferably between 8 and 30 ppm.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: November 3, 1998
    Assignee: Compagnie Europeene du Zirconium Cezus
    Inventors: Veronique Rebeyrolle, Daniel Charquet
  • Patent number: 5802130
    Abstract: A tube for constituting all or part of a cladding or guide tube for a fuel assembly is made from an alloy containing, by weight, 0.4% to 0.6% of tin, 0.5% to 0.8% of iron, 0.35% to 0.50% of vanadium, and 0.10% to 0.18% of oxygen, 100 ppm to 180 ppm of carbon and 50 ppm to 120 ppm of silicon. The alloy contains nothing else apart from zirconium and unavoidable impurities and it is completely recrystallized.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: September 1, 1998
    Assignees: Framatome, Compagnie Generale des Matieres Nucleaires
    Inventors: Jean-Paul Mardon, Jean Sevenat, Daniel Charquet
  • Patent number: 5735978
    Abstract: A method of manufacturing a tube suitable for use as sheath of a nuclear fuel rod zirconium based alloy. The alloy contains 0.18% to 0.25% iron, 0.07% to 0.13% chromium, 0.35% to 1.70% tin, all percentages by weight, 900 ppm to 2300 ppm oxygen, 80 ppm to 200 ppm carbon, and 50 ppm to 120 ppm silicon. A drawn blank is subjected to successive passes of metallurgical treatment and of heat treatment. The Fe/Cr ratio by weight in the alloy lies in the range 1.6 to 3. The heat treatment includes, after at least one rolling pass, a plurality of annealing passes under an inert atmosphere such that the sum .SIGMA.A is greater than 1.5.10.sup.-17, and advantageously in the range 2.10.sup.-17 to 2.10.sup.-16. The first rolling pass is performed on the tube coming from the drawing operation, without an intermediate annealing. .SIGMA.A designates the sum of the products of the times t (in hours) multiplied by the exponential of --Q/RT, where T is the temperature in K.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: April 7, 1998
    Assignees: Framatome, Compagnie Generale des Matieres Nuclearies, Cezus, Zircotube
    Inventors: Jean-Paul Mardon, Jean Senevat, Daniel Charquet
  • Patent number: 5702544
    Abstract: A tube for constituting all or part of a cladding or guide tube for a fuel assembly is made from an alloy containing, by weight, 1.4% to 0.6% of tin, 0.5% to 0.8% of iron, 0.35% to 0.50% of vanadium, and 0.10% to 0.18% of oxygen, 100 ppm to 180 ppm of carbon and 50 ppm to 120 ppm of silicon. The alloy contains nothing else apart from zirconium and unavoidable impurities and it is completely recrystallized.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: December 30, 1997
    Assignees: Framatome, Compagnie Generale Des Matieres Nucleaires, both of
    Inventors: Jean-Paul Mardon, Jean Sevenat, Daniel Charquet
  • Patent number: 5674330
    Abstract: A process for the fabrication of zirconium alloy sheet specifically intended for the manufacture of structural elements for boiling water reactors, which includes the following steps:a) producing in a vacuum an ingot having the composition of the desired alloy;b) forging and hot rolling the ingot;c) quenching of the blank thus obtained after reheating in the beta range;d) hot rolling after heating;e) heat treatment in the alpha range;f) at least one cycle of cold rolling followed by a heat treating in the alpha range; andg) final cold rolling followed by subcritical annealing in the alpha range;where the hot rolling of the sheet after quenching from the beta range is carried out in an initial direction, then in a direction perpendicular to the initial direction.
    Type: Grant
    Filed: August 14, 1995
    Date of Patent: October 7, 1997
    Assignee: Compagnie Europeene du Zirconium Cezus
    Inventors: Daniel Charquet, Pierre Barberis, Gerard Bunel
  • Patent number: 5648995
    Abstract: The method serves to manufacture tubes for constituting sheaths for nuclear fuel rods. A bar is made out of a zirconium-based alloy containing 50 ppm to 250 ppm iron, 0.8% to 1.3% by weight niobium, less than 1600 ppm oxygen, less than 200 ppm carbon, and less than 120 ppm silicon. The bar is heated to a temperature in the range 1000.degree. C. to 1200.degree. C. and is quenched in water. A blank is extruded after heating to a temperature in the range 600.degree. C. to 800.degree. C. and cold-rolled in at least four passes in order to obtain a tube, with intermediate heat treatment being performed between passes at temperatures in the range 560.degree. C. to 620.degree. C. A final heat treatment is performed at a temperature in the range 560.degree. C. to 620.degree. C., all of the heat treatments being performed under an inert atmosphere or a vacuum.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: July 15, 1997
    Assignee: Framatome
    Inventors: Jean-Paul Mardon, Jean Sevenat, Daniel Charquet
  • Patent number: 5622574
    Abstract: A product having at least an exterior surface formed by a Zr alloy comprising the following addition elements (% by weight): Sn 0.40 to 1.70, Fe 0.05 to 0.25, Cr 0.03 to 0.16, Ni less than 0.08; the following maximum amounts of impurities (ppm): Al 75, B 0.5, Cd 0.5, C 270, Co 20, Cu 50, Hf 100, H.sub.2 25, Mg 20, Mn 50, Mo 50, N.sub.2 65, Si 120, Ti 50, W 10, U total 3.5; with the balance being O.sub.2 and Zr, wherein the Zr alloy has an Ni content which is greater than 70 ppm and less than 300 ppm.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: April 22, 1997
    Assignee: Compagnie Europeenne Du Zirconium Cezus
    Inventor: Daniel Charquet
  • Patent number: 5256216
    Abstract: Zircaloy 2 or 4 strip is heat treated in the beta range, followed by rapid cooling by passing the strip between a first and second roller pair, each roller pair having two oppositely disposed rollers gripping the strip. Each roller pair is connected to a source of an electric current so as to complete an electric circuit including the source, the roller pairs and the strip, which causes heating of the strip to the beta range. The strip is heated at a rate less than 40.degree. C./sec between 750.degree. and 1000.degree. C., held at 1000.degree.-1100.degree. for less than 2 minutes and cooled at a rate of at least 40.degree. C./sec between 1000.degree. C. and 600.degree. C.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: October 26, 1993
    Assignee: Compagnie Europeenne Du Zirconium Cezus
    Inventors: Gerard Bunel, Charles Chauvel-Trepier, Jean-Pierre Gros, Daniel Charquet
  • Patent number: RE43182
    Abstract: A zirconium alloy tube for forming the whole or the outer portion of a nuclear fuel pencil housing or a nuclear fuel assembly guide tube. The zirconium alloy contains 0.8-1.8 wt. % of niobium, 0.2-0.6 wt. % of tin and 0.02-0.4 wt. % of iron, and has a carbon content of 30-180 ppm, a silicon content of 10-120 ppm and an oxygen content of 600-1800 ppm. The tube may be used when recrystallized or stress relieved.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: February 14, 2012
    Assignee: AREVA NP
    Inventors: Jean-Paul Mardon, Jean Senevat, Daniel Charquet