In Agent Also Containing Silicon, Rare Earth, Or Alkaline Earth Metal Patents (Class 420/25)
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Patent number: 9713860Abstract: A method for joining, assembling, at least two parts made of silicon carbide-based materials by non-reactive brazing is provided. According to the method, the parts are contacted with a non-reactive brazing composition, the assembly formed by the parts and the brazing composition is heated to a brazing temperature sufficient to melt the brazing composition totally or at least partly, and the parts and brazing composition are cooled to that, after solidification of the brazing composition, a moderately refractory joint is formed; wherein the non-reactive brazing composition is an alloy comprising, in atomic percentages, 45% to 65% silicon, 28% to 45% nickel and 5% to 15% aluminum. A brazing composition as defined above is provided. A brazing paste, suspension comprising a powder of said brazing composition and an organic binder as well as a joint and assembly obtained the foregoing method are also provided.Type: GrantFiled: March 7, 2014Date of Patent: July 25, 2017Assignee: Commissariat a l'Energie Atomique et aux Energies AlternativesInventors: Valérie Chaumat, Jean-Francois Henne, Nadia Miloud-Ali
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Patent number: 8540932Abstract: Ferritic spheroidal graphite cast iron includes: 3.1 to 3.5 percent by mass of carbon; 4.1 to 4.5 percent by mass of silicon; 0.8 percent by mass or below of manganese; 0.1 to 0.6 percent by mass of molybdenum; 0.1 to 1.0 percent by mass of chromium; 0.03 to 0.1 percent by mass of phosphorus; 0.03 percent by mass or below of sulfur; 0.02 to 0.15 percent by mass of magnesium; and iron.Type: GrantFiled: February 19, 2010Date of Patent: September 24, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Takaoka Co., Ltd.Inventors: Yoshikazu Genma, Go Kuramoto, Yoshihiro Hibino, Zhong-zhi Zhang, Takeyuki Sakuma
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Patent number: 8297340Abstract: Process for producing ductile iron by treating liquid iron with an initializer which is a ferrosilicon alloy comprising an effective amount of barium sufficient to inactivate the oxygen activity of the liquid iron. This is followed at a predetermined time thereafter by treating the liquid iron with a magnesium containing nodularizer, followed by treating the liquid iron with a eutectic graphite nucleation-inducing inoculant, and casting the iron.Type: GrantFiled: June 22, 2007Date of Patent: October 30, 2012Assignee: Foseco International LimitedInventor: Emmanuel Berthelet
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Patent number: 7081172Abstract: A nodular graphite cast iron is provided, having a pearlite matrix, with high strength and high toughness. The nodular graphite cast iron consists essentially of, by weight %: from 3.0 to 4.6% of carbon; from 1.6 to 2.5% of silicon; from 0.2 to 0.6% of manganese; from 0.02 to 0.05% of magnesium; from 0.0004 to 0.090% of zirconium; at least one of tin and copper such that ? ranges from 0.01 to 0.06% where ? indicates a tin conversion amount defined by a summation of a weight % of the tin and 0.1× a weight % of the copper; and the balance of iron and inevitable foreign matters.Type: GrantFiled: October 14, 2003Date of Patent: July 25, 2006Assignee: Aisin Seiki Kabushiki KaishaInventors: Yasuhiro Enya, Francois Coderre, Yoshikazu Ibayashi, Masaru Matukura
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Patent number: 6760396Abstract: The method of protectively coating metallic uranium which comprises dipping the metallic uranium in a molten alloy comprising about 20-75% of copper and about 80-25% of tin, dipping the coated uranium promptly into molten tin, withdrawing it from the molten tin and removing excess molten metal, thereupon dipping it into a molten metal bath comprising aluminum until it is coated with this metal, then promptly withdrawing it from the bath.Type: GrantFiled: February 4, 1946Date of Patent: July 6, 2004Assignee: The United States of America as represented by the United States Department of EnergyInventors: Ernest R. Boller, Lowell D. Eubank
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Publication number: 20040042925Abstract: The present invention relates to a method for nodularizing treatment of ductile iron using a ladle treatment method for nodularizing of a magnesium ferrosilicon alloy, where a magnesium ferrosilicon nodularizing alloy consisting essentially of 40 to 80% by weight of silicon, 2 to 15% by weight of magnesium, 0.3 to 5% by weight of lanthanum, 0 to 6% by weight of calcium, 0 to 5% by weight of aluminum, the balance being iron, is added to the ladle whereafter the molten iron is supplied to the ladle.Type: ApplicationFiled: October 30, 2002Publication date: March 4, 2004Inventor: Torbjorn Skaland
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Patent number: 6126713Abstract: An additive for use in producing spheroidal graphite cast iron of the present invention contains a fine particle of magnesium oxide having a purity of 90 weight % or more and at least one selected from the group consisting of a graphite-spheroidizing material, an inoculant and a graphite-spheroidizing inoculant. The fine particle of highly pure magnesium oxide increases the number of nuclei in a melt, and as a result thereof, increases the graphite spheroid count of a spheroidal graphite cast iron being produced. Another additive for use in producing spheroidal graphite cast iron of the present invention contains at least one selected from the group consisting of a graphite-spheroidizing material, an inoculant and a graphite-spheroidizing inoculant, and an oxide of a metal which has, at a temperature of a melt at a time when subjected to a graphite-spheroidizing treatment, an affinity for oxygen smaller than that of a graphite-spheroidizing element being used in the graphite-spheroidizing treatment.Type: GrantFiled: October 23, 1997Date of Patent: October 3, 2000Assignee: Hitachi Metals, Ltd.Inventors: Yoshio Igarashi, Hideharu Nakano, Kenya Matsuyama, Masahiro Takahashi, Senri Okada, Masahide Kawabata, Katsuhiko Kojo, Toshiki Yoshida
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Patent number: 5087290Abstract: The present invention provides an agent for the desulphurization, magnesium treatment and inoculation of cast iron melts in a single step based on a silicon alloy, wherein the agent has the following composition:______________________________________ silicon 30 to 80% by wt. magnesium 5 to 30% by wt. calcium 0.1 to 25% by wt. bismuth 0.1 to 2% by wt. cerium mischmetal 0.1 to 5% by wt. iron balance. ______________________________________The present invention also provides processes for the production of this agent. In addition, the present invention is concerned with the use of this agent for the simultaneous desulphurization, magnesium treatment and inoculation of cast iron melts in a single step.Type: GrantFiled: July 19, 1990Date of Patent: February 11, 1992Assignee: SKW Trostberg AktiengesellschaftInventors: Friedrich Wolfsgruber, Wolfgang Geiger, Detlef Missol