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| Number | Title | Issue Date |
| 8137488 | Method of producing a flat zirconium alloy product, flat product thus obtained and a nuclear plant reactor grid which is made from said flat product The invention relates to a method of producing a flat zirconium alloy product with a Kearns factor (cross direction) of between 0.3 and 0.7. The inventive method consists in: producing an ingot containing Nb=0.5 to 3.5%, Sn=0 to 1.5%, Fe=0 to 0.5%, Cr+V=0 to 0.3%, S... | 03/20/2012 |
| 8105448 | Fuel box in a boiling water nuclear reactor A method for manufacturing a sheet metal for use in a boiling water nuclear reactor and such a sheet metal. The method includes providing a material of a zirconium alloy that includes zirconium, and whose main alloying materials include niobium. The material is anne... | 01/31/2012 |
| 8043448 | Non-heat treated zirconium alloy fuel cladding and a method of manufacturing the same Disclosed herein are zirconium-based alloys that may be fabricated to form nuclear reactor components, particularly fuel cladding tubes, that exhibit sufficient corrosion resistance and hydrogen absorption characteristics, without requiring a late stage α+β or β-... | 10/25/2011 |
| 7763132 | Method of producing a zirconium alloy semi-finished product for the production of elongated product and use thereof A large ingot is produced by casting the zirconium alloy, then the ingot is forged in two stages to obtain the semi-finished product wherein the first stage of forging the ingot is performed at a temperature at which the zirconium alloy is in a state comprising crys... | 07/27/2010 |
| 7473329 | Method, use and device concerning cladding tubes for nuclear fuel and a fuel assembly for a nuclear pressure water reactor A method of producing a cladding tube for nuclear fuel for a nuclear pressure water reactor includes forming a tube which at least principally consists of a cylindrical tube component of a zirconium-based alloy, where the alloying element, except for zirconium, whic... | 01/06/2009 |
| 7292671 | Zirconium based alloy and component in a nuclear energy plant A zirconium-based alloy, suitable for use in a corrosive environment, where it is subjected to increased radiation and comprises 0.5-1.6 percentage by weight Nb and 0.3-0.6 percentage by weight Fe. The alloy is characterised in that it comprises 0.5-0.85 percentage ... | 11/06/2007 |
| 7228722 | Method of forming sputtering articles by multidirectional deformation A method of producing a valve metal mill form having dimensions sufficient to be divided to form a plurality of sputter targets is described. The method includes multidirectional deformation of an ingot to form a mill form having a preferred average grain size of ab... | 06/12/2007 |
| 7208055 | Thermal Treatment Method An article of titanium or a titanium-based alloy, or of zirconium or a zirconium-based alloy is case hardened by heat treatment for at least 12 hours at one or more temperatures in the range of 850° C. to 900° C. and at a pressure in the order of atmospheric press... | 04/24/2007 |
| 7153376 | Yttrium modified amorphous alloy An amorphous alloy having a composition consisting essentially of about 45 to about 65 atomic % Zr and/or Hf, about 4 to about 7.5 atomic % Ti and/or Nb, about 5 to about 15 atomic % Al and/or Zn, and the balance comprising a metal selected from the group consisting... | 12/26/2006 |
| 6909766 | Production method for a nuclear fuel assembly support grid and a nuclear fuel assembly support grid produced by the same One object of the present invention is to provide a production method for a nuclear fuel assembly support grid that improves the corrosion resistance of welded parts without impairing the characteristics of the support grid so as to be able adequately withstand high... | 06/21/2005 |
| 6902634 | Method for manufacturing zirconium-based alloys containing niobium for use in nuclear fuel rod cladding The present invention relates to a method for manufacturing zirconium-based alloys containing niobium with superior corrosion resistance for use in nuclear fuel rod claddings. The method of this invention comprises melting of the alloy, β-forging, β-quenching, hot... | 06/07/2005 |
| 6863745 | Zirconium based alloy and method for making a component for a nuclear fuel assembly with same 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... | 03/08/2005 |
| 6811746 | Zirconium alloy having excellent corrosion resistance and mechanical properties for nuclear fuel cladding tube The present invention relates to a zirconium alloy having excellent corrosion resistance and mechanical properties and a method for preparing a nuclear fuel cladding tube by zirconium alloy. More particulary, the present invention is directed to a zirconium alloy co... | 11/02/2004 |
| 6705601 | Self-compensating spiral spring for a mechanical balance-spiral spring oscillator This self-compensating spiral spring for a mechanical balance-spiral spring oscillator for a watch or clock movement or other precision instrument, made of an Nb—Hf paramagnetic alloy possessing a thermal coefficient of Young's modulus (TCE), such that it enables ... | 03/16/2004 |
| 6704386 | Fuel channel box and a method of manufacturing the same A fuel channel box manufacturing method processes a fuel channel box of a zirconium-base alloy by a beta-quench treatment that heats the fuel channel box by a heating coil. The distance between the heating coil and the opposite walls of the fuel channel b... | 03/09/2004 |
| 6692590 | Alloy with metallic glass and quasi-crystalline properties An alloy is described that is capable of forming a metallic glass at moderate cooling rates and exhibits large plastic flow at ambient temperature. Preferably, the alloy has a composition of (Zr, Hf)a Tab Tic Cud | 02/17/2004 |
| 6690759 | Zirconium-base alloy and nuclear reactor component comprising the same Disclosed herein are zirconium-base alloys excellent in both corrosion resistance and hydrogen absorption property, useful as materials for nuclear reactors. Such a zirconium-base alloy for nuclear reactors comprises 0.5-2 wt. % Sn, 0.07-0.6 wt. % Fe, 0.0... | 02/10/2004 |
| 6585835 | Method of manufacturing a zirconium based alloy component for use in nuclear industry A method for producing a component intended to be subjected to an increased radiation in a corrosive environment, wherein the component includes an alloy which at a first, high temperature has a BCC-structure and which at a second, lower temperature has a... | 07/01/2003 |
| 6544361 | Process for manufacturing thin components made of zirconium-based alloy and straps thus produced The present invention relates to a method for making flat, thin elements which consist of: producing a zirconium alloy blank also containing, besides the inevitable impurities, 0.8 to 1.3% of niobium, 1100 to 1800 ppm of oxygen, and 10 to 35 ppm of sulfur... | 04/08/2003 |
| 6530998 | Formed article of amorphous alloy having hardened surface and method for production thereof A ceramic hard layer is formed on the surface of a formed article by subjecting the formed article of a substantially amorphous alloy to a heat treatment in an atmosphere containing a reactive gas under the conditions of temperature and time falling withi... | 03/11/2003 |
| 6514360 | Method for manufacturing a tube and a sheet of niobium-containing zirconium alloy for a high burn-up nuclear fuel Disclosed is a method for manufacturing a tube and a sheet of niobium-containing zirconium alloys for the high burn-up nuclear fuel. The method comprises melting Nb-added zirconium alloy to ingot; forging the ingot at ଲ phase range; ଲ-quenchin... | 02/04/2003 |
| 6503346 | Fuel rod cladding tube for a boiling water reactor fuel rod and the production thereof Cladding tube for a fuel rod for a boiling water reactor fuel element, and its production. The cladding tube is composed practically homogeneously of the constituents of zircaloy and, with the ductility parameter γ=3 (kd)/(fr)2ࣘ3.5 | 01/07/2003 |
| 6454882 | Titanium alloy having enhanced notch toughness A titanium alpha-beta alloy having enhanced notch toughness comprises titanium, aluminum, and vanadium and is characterized by a microstructure having equiaxed alpha grains whose volume fraction is about 75 to 85 percent, a maximum grain size of the micro... | 09/24/2002 |
| 6368429 | Method of manufacturing zirconium alloy tubes The present invention relates to a method for producing tubing products from binary and multicomponent zircon alloys, consisting in obtaining from an ingot previously submitted to a beta distortion process p source preparation, hot forming said source pre... | 04/09/2002 |
| 6340536 | Zirconium and niobium alloy comprising erbium, preparation method and component containing said alloy An alloy of zirconium and niobium that includes erbium as a consumable neutron poison, its method of preparation and a component comprising said alloy are provided. This invention relates to an alloy of zirconium and niobium that includes erbium as a cons... | 01/22/2002 |
| 6231697 | High-strength amorphous alloy and process for preparing the same A high-strength amorphous alloy represented by the general formula: Xa Mb Alc Td (wherein X is at least one element selected between Zr and Hf; M is at least one element selected from the group consisting of Ni,... | 05/15/2001 |
| 6126762 | Protective coarsening anneal for zirconium alloys A method for increasing the resistance of zirconium alloy tubing to nodular corrosion by applying a protective anneal at a temperature within a clearly defined temperature range. Also, a zirconium alloy tubing having such protective anneal is disclosed. T... | 10/03/2000 |
| 6125161 | Method for making Zr alloy nuclear reactor fuel cladding having excellent corrosion resistance and creep properties The invention provides a method for making Zr alloy nuclear reactor fuel cladding having excellent corrosion resistance and creep properties. The method includes performing hot forging, solution heat treatment, hot extruding, and repeated cycles of anneal... | 09/26/2000 |
| 5940464 | Tube for a nuclear fuel assembly, and method for making same 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 car... | 08/17/1999 |
| 5900083 | Heat treatment of cast alpha/beta metals and metal alloys and cast articles which have been so treated A cast article is heat treated by vacuum annealing at an annealing temperature above the alpha/beta transition temperature of the cast article. Further, the cast article is subjected to a hot isostatic pressing step and a post-weld stress relief processin... | 05/04/1999 |
| 5887045 | Zirconium alloy tube for a nuclear reactor fuel assembly, and method for making same 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 vanadiu... | 03/23/1999 |
| 5881026 | Self-compensating balance spring for a mechanical oscillator of a balance-spring/balance assembly of a watch movement and process for manufacturing this balance-spring A self-compensating spring for a balance-spring for a balance-spring/balance assembly of a mechanical oscillator of a horological movement or of any other precision instrument, made of a paramagnetic Nb--Zr alloy containing between 5% and 25% by weight of... | 03/09/1999 |
| 5876524 | Method for the manufacture of tubes of a zirconium based alloy for nuclear reactors and their usage The present invention relates to a method of manufacturing tubes of zirconium based alloys for usage in nuclear reactors. According to the invention one can achieve good resistance towards general corrosion, improved transversal creep strength and reduced... | 03/02/1999 |
| 5862194 | Zirconium based alloy of low irradiation growth, method of producing the same, and use of the same The present invention provides a zirconium based alloy member which has very small deformation of elongation and bow occurring due to irradiation growth, a method of manufacturing it, and particularly an channel box for an atomic reactor fuel assembly. A ... | 01/19/1999 |
| 5854818 | Zirconium tin iron alloys for nuclear fuel rods and structural parts for high burnup Zirconium alloys for use in an aqueous environment subject to high fluence of a water reactor and characterized by improved corrosion resistance, consisting essentially of 0.3 to 1.8 weight percent tin, 0.1 to 0.65 weight percent iron, the balance of allo... | 12/29/1998 |
| 5844959 | Zirconium niobium tin alloys for nuclear fuel rods and structural parts for high burnup Zirconium alloys for use in an aqueous environment subject to high fluence of a water reactor and characterized by improved corrosion resistance, consisting essentially of from 0.5 to 3.25 weight percent niobium, from 0.3 to 1.8 weight percent tin, the ba... | 12/01/1998 |
| 5838753 | Method of manufacturing zirconium niobium tin alloys for nuclear fuel rods and structural parts for high burnup A process for fabricating nuclear fuel rod cladding tube comprising beta quenching a zirconium alloy billet consisting essentially of from 0.5 to 3.25 weight percent niobium, from 0.3 to 1.8 weight percent tin, the balance of the alloy being essentially n... | 11/17/1998 |
| 5835550 | Method of manufacturing zirconium tin iron alloys for nuclear fuel rods and structural parts for high burnup A process for fabricating nuclear fuel rod cladding tube comprising beta quenching a zirconium alloy billet consisting essentially of 0.3 to 1.8 weight percent tin, 0.1 to 0.65 weight percent iron, the balance of the alloy being essentially nuclear grade ... | 11/10/1998 |
| 5803996 | Rod-shaped or tubular amorphous Zr alloy made by die casting and method for manufacturing said amorphous Zr alloy An alloy material 4 received in a melting hearth 1 is melted by high-density energy supplied from a heat source 5. The molten alloy is transferred to a forced-cooled die 3 having a cavity 2 defining the profile of a product, and quenched to an amorphous s... | 09/08/1998 |
| 5735978 | Sheathing tube for a nuclear fuel rod 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 ... | 04/07/1998 |
