Manganese Containing Patents (Class 420/409)
  • Patent number: 10865465
    Abstract: The present invention relates to the composition and production of an engineered degradable metal matrix composite that is useful in constructing temporary systems requiring wear resistance, high hardness, and/or high resistance to deformation in water-bearing applications such as, but not limited to, oil and gas completion operations.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: December 15, 2020
    Assignee: Terves, LLC
    Inventors: Andrew J. Sherman, Nicholas Farkas, David Wolf
  • Patent number: 10760151
    Abstract: A castable, moldable, and/or extrudable structure using a metallic primary alloy. One or more additives are added to the metallic primary alloy so that in situ galvanically-active reinforcement particles are formed in the melt or on cooling from the melt. The composite contain an optimal composition and morphology to achieve a specific galvanic corrosion rate in the entire composite. The in situ formed galvanically-active particles can be used to enhance mechanical properties of the composite, such as ductility and/or tensile strength. The final casting can also be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final composite over the as-cast material.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: September 1, 2020
    Assignee: Terves, LLC
    Inventors: Brian P. Doud, Nicholas J. Farkas, Andrew J. Sherman
  • Patent number: 10724128
    Abstract: A castable, moldable, and/or extrudable structure using a metallic primary alloy. One or more additives are added to the metallic primary alloy so that in situ galvanically-active reinforcement particles are formed in the melt or on cooling from the melt. The composite contain an optimal composition and morphology to achieve a specific galvanic corrosion rate in the entire composite. The in situ formed galvanically-active particles can be used to enhance mechanical properties of the composite, such as ductility and/or tensile strength. The final casting can also be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final composite over the as-cast material.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: July 28, 2020
    Assignee: Terves, LLC
    Inventors: Brian P. Doud, Nicholas J. Farkas, Andrew J. Sherman
  • Patent number: 10022470
    Abstract: A microalloyed magnesium material for absorption in the body of a human or animal. The microalloyed magnesium material consists of: 0.85 to 1.4 percent by weight of zinc (Zn), 0.2 to 0.5 percent by weight of calcium (Ca), 0.2 to 0.5 percent by weight of manganese (Mn) with the remainder being magnesium (Mg) and inevitable impurities.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: July 17, 2018
    Assignee: THIXOMAT, INC.
    Inventors: Raymond Decker, Stephen LeBeau, Steven Young
  • Patent number: 9702838
    Abstract: A sample composed of a nickel-based metal is immersed in a corrosive solution (aqueous solution containing an acid and sodium chloride). The sample that has been immersed in the corrosive solution is exposed to a flame of engine oil, and further heated. By immersing the sample in the particular corrosive solution, a Ni-enriched phase which is deficient in additional elements and in which the Ni concentration increases is formed in a surface layer region of the sample. By exposing the sample having the Ni-enriched phase to the flame of the engine oil, components in the engine oil are activated and brought into contact with the sample to form a low-melting point phase in the surface layer region of the sample. By heating the sample having the low-melting point phase to melt the low-melting point phase and resolidifying the low-melting point phase, particles and the like can be formed depending on the type of material of the sample.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: July 11, 2017
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hajime Ota, Taichiro Nishikawa, Kazuo Yamazaki, Masao Sakuta, Takeshi Tokuda
  • Patent number: 9180515
    Abstract: A magnesium alloy according to the present invention comprises: Al in an amount of from 2 to 6%; Ca in an amount making a compositional ratio (i.e., Ca/Al) being from 0.5 to 1.5; Mn in an amount of from 0.1 to 0.7%; strontium (Sr) in an amount of from 1 to 6%; and the balance being magnesium (Mg), and inevitable impurities and/or a modifying element; when the entirety is taken as 100% by mass. By means of this setting, Mg alloys, which are also good in terms of high-temperature characteristics, such as creep resistance and heat conductivity, in addition to ordinary-temperature characteristics, are obtained.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: November 10, 2015
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuki Okamoto, Kyoichi Kinoshita, Motoharu Tanizawa, Hiroya Akatsuka
  • Publication number: 20150140352
    Abstract: A semifinished product for an implant and implants produced from the semifinished product, the semifinished product comprising or consisting of a region of a magnesium alloy, which is characterized by a grain size gradient of the magnesium alloy between two opposed surfaces from ?3 ?m to ?8 ?m, in each case in relation to the average grain size. Use of the semifinished product for producing corresponding implants, and also a method for producing semifinished products.
    Type: Application
    Filed: October 28, 2014
    Publication date: May 21, 2015
    Inventors: Ullrich Bayer, Okechukwu Anopuo, Bernd Block
  • Publication number: 20150017057
    Abstract: The invention offers a magnesium alloy sheet having excellent warm plastic formability, a production method thereof, and a formed body produced by performing warm plastic forming on this sheet. The magnesium alloy sheet is produced by giving a predetermined strain to a rolled sheet RS that is not subjected to a heat treatment aiming at recrystallization. The sheet is not subjected to the foregoing heat treatment even after the giving of a strain. The strain is given through the process described below. A rolled sheet RS is heated in a heating furnace 10. The heated rolled sheet RS is passed between rollers 21 to give bending to the rolled sheet RS. The giving of a strain is performed such that the strain-given sheet has a half peak width of 0.20 deg or more and 0.59 deg or less in a (0004) diffraction peak in monochromatic X-ray diffraction. The alloy sheet exhibits high plastic deformability by forming continuous recrystallization during warm plastic forming through the use of the remaining strain.
    Type: Application
    Filed: August 4, 2014
    Publication date: January 15, 2015
    Inventors: Ryuichi INOUE, Nozomu KAWABE, Nobuyuki MORI, Masatada NUMANO, Junichi MATSUMOTO, Motonori NAKAMURA, Masayuki NISHIZAWA, Atsushi KIMURA, Yukihiro OISHI
  • Publication number: 20140348696
    Abstract: A method for increasing formability of magnesium alloy sheet and the magnesium alloy sheet prepared by the same are provided, in which the method includes the following steps: forming {10-12} twins in magnesium alloy sheet (step 1); and annealing the magnesium alloy sheet of step 1 (step 2). The present invention also provides the magnesium alloy sheet containing {10-12} twins prepared by the method. Accordingly, the room temperature formability and the warm formability are increased by forming {10-12} twins through deformation on the magnesium alloy sheet and subsequently performing annealing, because it is possible to artificially form {10-12} twins without increasing dislocations in the magnesium alloy sheet and accommodate the deformation generated during the forming via annihilation of the twins.
    Type: Application
    Filed: August 11, 2014
    Publication date: November 27, 2014
    Applicant: Korea Institute of Machinery and Materials
    Inventors: Sung Hyuk Park, Young Min Kim, Ha Sik Kim, Chang Dong Yim, Bong Sun You, Seong Gu Hong, Chong Soo Lee, Jeong Hun Lee, Hyung Lae Kim
  • Publication number: 20140332121
    Abstract: A magnesium alloy having high ductility and high toughness, and a preparation method thereof are provided, in which the magnesium alloy includes 1.0-3.5 wt % of tin, 0.05-3.0 wt % of zinc, and the balance of magnesium and inevitable impurities, and a preparation method thereof. Magnesium alloy with a relatively small tin content is added with zinc, and optionally, with one or more alloy elements selected from aluminum, manganese and rare earth metal, at a predetermined content ratio. As a result, the alloy exhibits superior ductility and moderate strength due to the suppression of excessive formation of precipitates and some precipitates hardening effect, respectively. Accordingly, compared to extruded material prepared from conventional commercial magnesium alloys, higher ductility and toughness are provided, so that the alloy can be widely applied over the entire industries including automotive and aerospace industries.
    Type: Application
    Filed: July 25, 2014
    Publication date: November 13, 2014
    Applicant: KOREA INSTITUTE OF MACHINERY AND MATERIALS
    Inventors: Sung Hyuk Park, Young Min Kim, Ha-Sik Kim, Bong Sun You, Chang Dong Yim
  • Publication number: 20140271332
    Abstract: A method of manufacturing a cold-rolled magnesium alloy sheet for improving formability, including, (a) preparing a composite sheet which is composed of a main sheet made of magnesium alloy and a restrainer made of steel and functioning to suppress transverse plastic deformation (plastic deformation in a transverse direction) of the main sheet during a rolling process, (b) performing a cold-rolling of the composite sheet, and (c) separating the cold-rolled magnesium alloy sheet from the cold-rolled composite sheet obtained from (b). The magnesium alloy sheets manufactured by the invention has improved formability at an ambient temperature, and thus can be usefully applied to extensive industrial fields such as automobiles and aircrafts.
    Type: Application
    Filed: February 25, 2014
    Publication date: September 18, 2014
    Applicant: KOREA INSTITUTE OF MACHINERY AND MATERIALS
    Inventors: Se-Jong Kim, Young-Seon Lee
  • Publication number: 20140271333
    Abstract: Disclosed are a magnesium mother alloy, a manufacturing method thereof, a metal alloy using the same, and a method of manufacturing the metal alloy. In particular, there are provided a magnesium mother alloy with improved oxidation and ignition properties, and a manufacturing method thereof, and also provided a metal alloy with low cost that is suitable for design purposes using the magnesium mother alloy, and a method of manufacturing the metal alloy. The magnesium mother alloy includes a plurality of magnesium grains, and scandium dissolved in the magnesium grains, or a scandium compound crystallized at grain boundaries which are not inside but outside the magnesium grains. Also, the metal alloy suitable for design purposes is manufactured at low cost by adding the magnesium mother alloy containing scandium into a magnesium alloy or an aluminum alloy.
    Type: Application
    Filed: May 27, 2014
    Publication date: September 18, 2014
    Applicant: Korea Institute of Industrial Technology
    Inventors: Shea Kwang Kim, Jung Ho Seo, In Kyum Kim
  • Patent number: 8808423
    Abstract: Provided is a manufacturing method of a magnesium-based alloy for high temperature. The manufacturing method includes melting a magnesium (Mg) or magnesium alloy into a liquid phase, adding calcium oxide (CaO) 1.4 times the weight of a final calcium (Ca) target composition onto a surface of a melt in which the magnesium or the magnesium alloy is melted, forming a targeted amount of Ca in the magnesium or magnesium alloy through a reduction reaction between the melt and the added CaO. Specifically, the amount of Ca formed is in the range of 0.8 wt % to 2.4 wt %, and a final composition of the Mg alloy includes 6.0-8.0 wt % of aluminum (Al), 0.1-0.3 wt % of manganese (Mn), 0.2-0.3 wt % of strontium (Sr), less than 0.04 wt of zinc (Zn), less than 0.9 wt of tin (Sn), and a balance being Mg.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: August 19, 2014
    Assignee: Korea Institute of Industrial Technology
    Inventors: Shae K. Kim, Jung-Ho Seo
  • Patent number: 8657973
    Abstract: Magnesium-based alloy wire excelling in strength and toughness, its method of manufacture, and springs in which the magnesium-based alloy wire is utilized are made available. The magnesium-based alloy wire contains, in mass %, 0.1 to 12.0% Al, and 0.1 to 1.0% Mn, and is provided with the following constitution. Diameter d that is 0.1 mm or more and 10.0 mm or less; length L that is 1000d or more; tensile strength that is 250 MPa or more; necking-down rate that is 15% or more; and elongation that is 6% or more. Such wire is produced by draw-forming it at a working temperature of 50° C. or more, and by heating it to a temperature of 100° C. or more and 300° C. or less after the drawing process has been performed.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: February 25, 2014
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo (SEI) Steel Wire Corp.
    Inventors: Yukihiro Oishi, Nozomu Kawabe
  • Patent number: 8591674
    Abstract: A method of enhancing the ductility of magnesium alloy sheets containing 85% or more by weight of magnesium is described. An annealed, substantially strain free, sheet of generally uniform grain size is locally deformed in local regions to develop strained ‘islands’ of a predetermined strain embedded in a substantially strain-free matrix and then annealed. The deformed regions undergo recrystallization and grain growth while the remainder of the sheet suffers only minor change in grain size, leading to sheet with grains having a bimodal size distribution. The ductility of alloys processed in this way is significantly greater than the ductility of the unprocessed, uniform grain size alloy without compromise to the tensile strength of the alloy.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: November 26, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Sushil Kumar Mishra, Shashank Tiwari, Asim Tewari, Jon T. Carter, Deepika Sachdeva
  • Publication number: 20130280121
    Abstract: A magnesium alloy that forms a stable protective film on the surface of molten metal, having excellent ignition resistance restricting natural ignition of a chip thereof as well as having excellent strength and ductility, so that the Mg alloy can be melted and cast in the air or a common inert atmosphere. The magnesium alloy includes, by weight, 7.0% or greater but less than 11% of Al, 0.05% to 2.0% of Ca, 0.05% to 2.0% of Y, greater than 0% but not greater than 6.0% of Zn, and the balance of Mg, and the other unavoidable impurities. The total content of the Ca and the Y is equal to or greater than 0.1% but less than 2.5% of the total weight of the magnesium alloy.
    Type: Application
    Filed: October 4, 2011
    Publication date: October 24, 2013
    Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Young Min Kim, Ha Sik Kim, Bong Sun You, Chang Dong Yim
  • Publication number: 20130209195
    Abstract: A linear object is composed of a magnesium alloy including, in percent by mass, 0.1% to 6% of Zn, 0.4% to 4% of Ca, and the balance being Mg and incidental impurities, in which, when a creep test is performed on the linear object under conditions of a temperature of 150° C., a stress of 75 MPa, and a holding time of 100 hours, the linear object has a creep strain of 1.0% or less. Zn and Ca interact with each other to improve heat resistance, and thus it is possible to obtain the linear object having an excellent creep property. By incorporating Zn and Ca, in amounts in specific ranges, into the magnesium alloy, it is also possible to obtain the linear object having excellent plastic workability.
    Type: Application
    Filed: October 3, 2011
    Publication date: August 15, 2013
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Tetsuya Kuwabara, Taichirou Nishikawa, Yoshihiro Nakai, Toru Tanji, Misato Kusakari
  • Publication number: 20130183193
    Abstract: A magnesium alloy that has excellent ignition resistance and is excellent in both strength and ductility. The magnesium alloy includes, by weight, 1.0% or greater but less than 7.0% of Al, 0.05% to 2.0% of Ca, 0.05% to 2.0% of Y, greater than 0% but not greater than 6.0% of Zn, and the balance of Mg, and the other unavoidable impurities. The total content of the Ca and the Y is equal to or greater than 0.1% but less than 2.5% of the total weight of the magnesium alloy. The Mg alloy forms a dense composite oxide layer that acts as a protective film. Thus the Mg alloy has very excellent oxidation resistance and ignition resistance, can be melted, cast and machined in the air or a common inert atmosphere (Ar or N2), and can reduce the spontaneous ignition of chips that are accumulated during the process of machining.
    Type: Application
    Filed: October 4, 2011
    Publication date: July 18, 2013
    Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Young Min Kim, Ha Sik Kim, Bong Sun You, Chang Dong Yim
  • Patent number: 8475608
    Abstract: Magnesium-based hydrogen storage alloys having metallic magnesium (Mg) and a magnesium-containing intermetallic compound (MgxMy wherein y is 1?x) and containing not less than 60 mass-% of magnesium in total, and having a phase of a primarily crystallized magnesium-containing intermetallic compound in its solidification structure.
    Type: Grant
    Filed: November 25, 2005
    Date of Patent: July 2, 2013
    Assignee: Japan Metals and Chemicals Co., Ltd.
    Inventors: Masahito Osawa, Hidenori Tomioka, Naoyoshi Terashita, Noboru Hayami, Shigeru Tsunokake
  • Patent number: 8308878
    Abstract: Magnesium-based alloy wire excelling in strength and toughness, its method of manufacture, and springs in which the magnesium-based alloy wire is utilized are made available. The magnesium-based alloy wire contains, in mass %, 0.1 to 12.0% Al, and 0.1 to 1.0% Mn, and is provided with the following constitution. Diameter d that is 0.1 mm or more and 10.0 mm or less; length L that is 1000 d or more; tensile strength that is 250 MPa or more; necking-down rate that is 15% or more; and elongation that is 6% or more. Such wire is produced by draw-forming it at a working temperature of 50° C. or more, and by heating it to a temperature of 100° C. or more and 300° C. or less after the drawing process has been performed.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: November 13, 2012
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo (SEI) Steel Wire Corp.
    Inventors: Yukihiro Oishi, Nozomu Kawabe
  • Publication number: 20120269674
    Abstract: A magnesium alloy includes about 7.2 to about 7.8 wt % aluminum, about 0.45 wt % to about 0.90 wt % zinc, about 0.17 wt % to about 0.40 wt % manganese, about 0.30 wt % to about 1.5 wt % rare earth elements, about 0.00050 wt % to about 0.0015 wt % beryllium, and the rest being magnesium and unavoidable impurities. A method of making the magnesium alloy is further provided.
    Type: Application
    Filed: October 23, 2011
    Publication date: October 25, 2012
    Applicants: FOXCONN TECHNOLOGY CO., LTD., FU ZHUN PRECISION INDUSTRY (SHEN ZHEN) CO., LTD.
    Inventors: HSIEN-TSUNG LI, KAM-SHAU CHAN, BIN-FEI WEI, JIE WANG, XIN DONG
  • Publication number: 20120156087
    Abstract: This invention aims to provide a recycled magnesium alloy having a good corrosion resistance and a process for producing the same. The process of the present invention comprises an adjusting step of adjusting composition of molten metal of a magnesium alloy so as to comprise, by mass: Al: 5 to 10%, Zn: not less than 1% and not less than three times of Cu content (%), Mn: 0.1 to 1.5% and the remainder: Mg and impurities with or without one or more reforming elements. While the upper limit of the Al content is restricted to a low level, the Zn content is increased in accordance with the Cu content. Therefore, the recycled magnesium alloy produced by this process can effectively suppress corrosion caused by Cu, which is one of corrosion-causing elements.
    Type: Application
    Filed: June 6, 2010
    Publication date: June 21, 2012
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hiroyuki Kawabata, Naohisa Nishino, Sonoko Nishino, Yasushi Iwata, Yoshikazu Genma, Tsuyoshi Seguchi
  • Publication number: 20120114517
    Abstract: A thermoelectric material (and a method for producing the same) is essentially formed of an Mg2Si-based compound represented by the chemical formula Mg2-x-y-zAlxZnyMnzSi (x?0, y?0, z?0, 0.04?y/x?0.6, and 0.013?z/x?0.075) wherein the total amount of Al, Zn, and Mn is 0.3 at % to 5 at %. Mg2-x-y-zAlxZnyMnz is provided in the form of an Mg alloy.
    Type: Application
    Filed: October 31, 2011
    Publication date: May 10, 2012
    Applicants: National University Corporation Nagoya University, Hitachi Chemical Company, Ltd.
    Inventors: Takashi Itoh, Kento Hagio
  • Publication number: 20120107171
    Abstract: A magnesium alloy sheet having good press formability, a magnesium alloy structural member produced by pressing the sheet, and a method for producing a magnesium alloy sheet are provided. The magnesium alloy sheet is composed of a magnesium alloy containing Al and Mn. When a region from a surface of the alloy sheet to 30% of the thickness of the alloy sheet in a thickness direction of the magnesium alloy sheet is defined as a surface region and when a 200 ?m2 sub-region is arbitrarily selected from this surface region, the number precipitated impurity grains containing both Al and Mg and having a maximum diameter of 0.5 to 5 ?m is 5 or less. When a 50 ?m2 subregion is arbitrarily selected from the surface region, the number of crystallized impurity grains containing both Al and Mn and having a maximum diameter of 0.1 to 1 ?m is 15 or less. In the grains of the crystallized phases, the mass ratio Al/Mn of Al to Mn is 2 to 5.
    Type: Application
    Filed: June 8, 2010
    Publication date: May 3, 2012
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Takahiho Kitamura, Yukihiro Oishi, Nozomu Kawabe
  • Publication number: 20120070248
    Abstract: There is provided a linear object comprising magnesium-alloy having not only excellent heat resistance but also excellent plastic formability. The linear object comprising magnesium-alloy contains, on a mass percent basis, 0.1% to 6% Y, one or more elements selected from the group consisting of 0.1% to 6% Al, 0.01% to 2% Zn, 0.01% to 2% Mn, 0.1% to 6% Sn, 0.01% to 2% Ca, 0.01% to 2% Si, 0.01% to 2% Zr, and 0.01% to 2% Nd, and the balance being Mg and incidental impurities, in which the linear object comprising magnesium-alloy has a creep strain of 1.0% or less, the creep strain being determined by a creep test at a temperature of 150° C. and a stress of 75 MPa for 100 hours.
    Type: Application
    Filed: May 18, 2010
    Publication date: March 22, 2012
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Tetsuya Kuwabara, Taichirou Nishikawa, Yoshihiro Nakai, Toru Tanji, Misato Kusakari
  • Publication number: 20120070331
    Abstract: Magnesium-based alloys having good mechanical properties, such as mechanical strength, ductility, and castability, and methods of making the magnesium alloys are disclosed. The magnesium alloys comprise 8.7 to 11.8 wt % aluminum, 0.63 to 1.93 wt % zinc, 0.1 to 0.5 wt % manganese, 0.5 to 1.5 wt % rare earth elements, and a remainder of said magnesium alloy being composed of magnesium and unavoidable impurities.
    Type: Application
    Filed: November 27, 2011
    Publication date: March 22, 2012
    Applicants: FOXCONN TECHNOLOGY CO., LTD., FU ZHUN PRECISION INDUSTRY (SHEN ZHEN) CO., LTD.
    Inventors: KUO-JUNG CHUNG, HAI-TAO HUANG, FEI-YAN XIAO, KAM-SHAU CHAN, HSIEN-TSUNG LI, BIN-LUNG OU
  • Publication number: 20120059455
    Abstract: A bioerodible endoprosthesis includes a bioerodible magnesium alloy. The bioerodible magnesium alloy includes magnesium, between 7 and 8 weight percent aluminum, between 0.4 and 0.8 weight percent zinc, and between 0.05 and 0.8 weight percent manganese.
    Type: Application
    Filed: August 24, 2011
    Publication date: March 8, 2012
    Applicant: Boston Scientific SeiMed, Inc.
    Inventors: Jan Weber, Aiden Flanagan, Torsten Scheuermann
  • Publication number: 20120046732
    Abstract: A process for producing a magnesium based product, comprising the production of a feedstock out of a magnesium based alloy or a mixture of magnesium based alloys, a subsequent thermo-mechanical treatment of the feedstock, and an annealing step wherein the feedstock is produced by semi-solid processing. The invention further provides products, in particular implants and more particular stents made according to said process.
    Type: Application
    Filed: February 12, 2010
    Publication date: February 23, 2012
    Inventors: Wilhelmus Hubertina Sillekens, Müge Erinç, Raymond Gerardus Theodorus Marie Mannens, Robert Jan Werkhoven
  • Publication number: 20110236251
    Abstract: Provided is a manufacturing method of a magnesium-based alloy for high temperature. The manufacturing method includes melting a magnesium (Mg) or magnesium alloy into a liquid phase, adding calcium oxide (CaO) 1.4 times the weight of a final calcium (Ca) target composition onto a surface of a melt in which the magnesium or the magnesium alloy is melted, forming a targeted amount of Ca in the magnesium or magnesium alloy through a reduction reaction between the melt and the added CaO. Specifically, the amount of Ca formed is in the range of 0.8 wt % to 2.4 wt %, and a final composition of the Mg alloy includes 6.0-8.0 wt % of aluminum (Al), 0.1-0.3 wt % of manganese (Mn), 0.2-0.3 wt % of strontium (Sr), less than 0.04 wt of zinc (Zn), less than 0.9 wt of tin (Sn), and a balance being Mg.
    Type: Application
    Filed: March 18, 2011
    Publication date: September 29, 2011
    Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Shae K. KIM, Jung-Ho SEO
  • Patent number: 7942986
    Abstract: A magnesium-based alloy consists of 1.5-4.0% by weight rare earth element(s), 0.3-0.8% by weight zinc, 0.02-0.1% by weight aluminium, and 4-25 ppm beryllium. The alloy optionally contains up to 0.2% by weight zirconium, 0.3% by weight manganese, 0.5% by weight yttrium and 0.1% by weight calcium. The remainder of the alloy is magnesium except for incidental impurities.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: May 17, 2011
    Assignee: Cast Centre Pty Ltd
    Inventors: Colleen Joyce Bettles, Mark Antony Gibson
  • Patent number: 7682470
    Abstract: A magnesium-based alloy consists of 1.5-4.0% by weight rare earth element(s), 0.3-0.8% by weight zinc, 0.02-0.1% by weight aluminum, and 4-25 ppm beryllium. The alloy optionally contains up to 0.2% by weight zirconium, 0.3% by weight manganese, 0.5% by weight yttrium and 0.1% by weight calcium. The remainder of the alloy is magnesium except for incidental impurities.
    Type: Grant
    Filed: April 4, 2006
    Date of Patent: March 23, 2010
    Assignee: Cast Centre Pty Ltd
    Inventors: Colleen Joyce Bettles, Mark Antony Gibson
  • Publication number: 20100061881
    Abstract: Disclosed is a method for producing a magnesium alloy press-formed body at a high degree of forming and at a low cost. Also disclosed is a magnesium alloy press-formed body having an aesthetic surface, which is produced by the method. The method comprises the steps of applying an organic resin capable of imparting formability (e.g. a water-soluble urethane resin, a water-soluble polyester resin, a water-soluble acrylic resin, a water-soluble epoxy resin, or an organic resin produced by modification of any one of these resins), or an organic resin which is prepared by mixing any one of these resins with a silane coupling agent, colloidal silica, a lubricant, a metal alkoxide or the like by coating onto the surface of a magnesium alloy material, press-forming the organic resin-coated magnesium alloy material into a desired shape, and removing the organic resin using a resin removing liquid.
    Type: Application
    Filed: August 25, 2006
    Publication date: March 11, 2010
    Applicant: TOYO KOHAN., LTD.
    Inventors: Masao Komai, Koh Yoshioka
  • Publication number: 20100054985
    Abstract: The present invention relates to a magnesium aluminum alloy with enhanced creep resistance. The alloy contains barium and calcium in low proportions, and possesses a higher creep resistance in comparison to alloys containing rare earth elements. The alloy may additionally include zinc, tin, lithium, manganese, yttrium, neodymium, cerium and/or praseodymium in proportions of up to 7% by weight, respectively.
    Type: Application
    Filed: August 13, 2009
    Publication date: March 4, 2010
    Applicant: Gkss-Forschungszentrum Geesthacht GmbH
    Inventors: HAJO DIERINGA, Norbert Hort, Karl U. Kainer
  • Publication number: 20100047109
    Abstract: The invention offers (a) a method of producing a magnesium-alloy material, the method being capable of obtaining a magnesium-alloy material having high strength, (b) a magnesium-alloy material having excellent strength, and (c) a magnesium-alloy wire having high strength. A molten magnesium alloy is supplied to a continuous casting apparatus provided with a movable casting mold to produce a cast material. The cast material is supplied to between at least one pair of rolls to perform an area-reducing operation (a rolling operation). The rolling operation is performed such that pressure is applied to the cast material using the rolls from at least three directions in the cross section of the cast material. A magnesium-alloy material obtained through the above-described production method has a fine crystal structure and is excellent in plastic processibility.
    Type: Application
    Filed: November 2, 2009
    Publication date: February 25, 2010
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Taichiro NISHIKAWA, Yoshihiro Nakai
  • Patent number: 7666351
    Abstract: The invention offers (a) a method of producing a magnesium-alloy material, the method being capable of obtaining a magnesium-alloy material having high strength, (b) a magnesium-alloy material having excellent strength, and (c) a magnesium-alloy wire having high strength. A molten magnesium alloy is supplied to a continuous casting apparatus provided with a movable casting mold to produce a cast material. The cast material is supplied to between at least one pair of rolls to perform an area-reducing operation (a rolling operation). The rolling operation is performed such that pressure is applied to the cast material using the rolls from at least three directions in the cross section of the cast material. A magnesium-alloy material obtained through the above-described production method has a fine crystal structure and is excellent in plastic processability.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: February 23, 2010
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Taichiro Nishikawa, Yoshihiro Nakai
  • Patent number: 7638089
    Abstract: An exemplary magnesium alloy includes: by weight, magnesium as a main ingredient, aluminum in an amount from 7.5% to 7.8%, zinc in an amount from 0.35% to 1.0%, manganese in an amount from 0.15% to 0.5%, silicon less than 0.1%, copper less than 0.03%, iron less than 0.005%, and nickel less than 0.002%. The present invention also provides a thin workpiece made of the magnesium alloy.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: December 29, 2009
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Kam-Shau Chan, Cheng-Shi Chen, Wen-Hsien Tang
  • Publication number: 20090269237
    Abstract: The high-strength non-combustible magnesium alloy is obtained by adding at least one supplementary additive selected from among carbon (C), molybdenum (Mo), niobium (Nb), silicon (Si), tungsten (W), alumina (Al2O3), magnesium silicide (Mg2Si) and silicon carbide (SiC) to small chip-like blocks of a non-combustible magnesium alloy resulting from adding 0.5 to 5.0% by mass of calcium to a magnesium alloy to produce a crushed product, and subjecting the same to forming, sintering and plastic working. The high-strength non-combustible magnesium alloy exhibits excellent joining ability, and can therefore enhance weldability when used in a filler metal.
    Type: Application
    Filed: February 28, 2007
    Publication date: October 29, 2009
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDSUTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Tomio Satoh, Hidetoshi Ueno, Yoji Ogawa
  • Publication number: 20090269236
    Abstract: The present invention relates to a corrosion resistant magnesium alloy which can be prepared with a justifiable expenditure of energy from scrap or impure copper containing precursors and displays a ductility such that it can be used as a casting or kneading material. The magnesium alloy contains, relative to the total weight of the magnesium alloy, 1 to 9 wt. % aluminium, 0.6 to 6 wt. % zinc, 0.1 to 2 wt. % manganese, 0 to 2 wt. % rare earth elements, 0.5 to 2 wt. % copper, wherein the weight ratio of aluminium to zinc lies in the range from 1:1 to 2:1.
    Type: Application
    Filed: April 17, 2009
    Publication date: October 29, 2009
    Applicant: GKSS-Forschungzentrum Geesthacht GmbH
    Inventors: Carsten Blawert, Ulrich Kainer, Wolfgang Dietzel, Andre Ditze, Christiane Scharf, Predrag Zivanovic
  • Publication number: 20090196787
    Abstract: An improved, castable, magnesium-based alloy having good creep resistance, good corrosion resistance, with improved tensile strength and elongation; methods for preparing the alloys; methods for preparing articles from the alloys; and articles, machines, and other devices comprising the same.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 6, 2009
    Inventor: Randy S. Beals
  • Publication number: 20090104527
    Abstract: A hydrogen storage alloy containing a phase of a chemical composition defined by a general formula A5·xB1+xC24: wherein in the general formula A5·xB1+xC24, A denotes one or more element(s) selected from rare earth elements; B denotes one or more element(s) selected from a group consisting of Mg, Ca, Sr, and Ba; C denotes one or more element(s) selected from a group consisting of Ni, Co, Mn, Al, Cr, Fe, Cu, Zn, Si, Sn, V, Nb, Ta, Ti, Zr, and Hf; and x denotes a numeral in a range from ?0.1 to 0.8: and the phase has a crystal structure belonging to a space group of R-3m and having a length ratio of the c-axis to the a-axis of the lattice constant in a range of 11.5 to 12.5.
    Type: Application
    Filed: August 11, 2006
    Publication date: April 23, 2009
    Applicant: GS Yuasa Corporation
    Inventors: Tetsuya Ozaki, Tetsuo Sakai, Manabu Kanemoto, Minoru Kuzuhara, Tadashi Kakeya, Masaharu Watada
  • Publication number: 20090104070
    Abstract: The invention relates to the development of a corrosion-resistant magnesium secondary alloy. In the field of magnesium metallurgy, no secondary alloys have existed so far such as they exist in the case of other metals such as aluminium, for example. Magnesium alloys are corrosion-resistant if the copper, nickel and iron contents are very low. Recycling of old scrap metal with the aim of again producing structural parts has therefore not been possible up till now since too much copper and nickel are contained in this scrap metal According to the invention, this problem is solved by a new magnesium secondary alloy having been developed which, in spite of higher contents of copper, nickel, iron and silicon, possesses the same corrosion properties as pure magnesium alloys.
    Type: Application
    Filed: July 13, 2006
    Publication date: April 23, 2009
    Inventors: Andre Ditze, Christiane Scharf, Carsten Blawert, Karl Ulrich Kainer, Emma Deyanira Morales Garza
  • Publication number: 20090068053
    Abstract: The present invention relates to a high strength and high ductility magnesium alloy and its preparation method. The magnesium alloy in the present invention contains 3˜9 wt % of aluminum, 3.5˜9 wt % of zinc, 0.15˜1 wt % of manganese, 0.01˜2 wt % of antimony, and balanced magnesium. The alloy may further comprise 0˜2 wt. % of one element selected from the group consisting of mischmetal, calcium, and silicon. The room temperature mechanical properties of the T6 heat-treated typical alloy in the present invention are as following: Ultimate Tensile Strength of more than or equal to 270 Mpa, Yield Tensile Strength of more than or equal to 140 Mpa, Elongation of more than or equal to 6%, Brinell hardness of more than or equal to 70, Impact Energy of more than or equal to 12 J. Some of the alloys in the present invention not only possess superior room temperature mechanical properties, but also have very good high temperature mechanical properties.
    Type: Application
    Filed: April 11, 2005
    Publication date: March 12, 2009
    Inventors: Yuequn Ma, Rongshi Chen, Enhou Han
  • Publication number: 20090060776
    Abstract: The present invention provides a high-quality magnesium alloy case having a complex shape in which formability is ensured by specifying the composition of the magnesium alloy and setting the amount of internal impurities to an appropriate value or below, and the present invention is a magnesium alloy case comprising a superplastica body formed by the superplastic forming of a magnesium alloy sheet material, which is containing 1.0 to 10.0 mass % of aluminum, 0.5 to 3.0 mass % of zinc, and 0.1 to 0.8 mass % of manganese as a part of added alloy elements and has an oxygen concentration of 300 mass ppm or less, and the case having a structure being inhibited in cavity formation during the superplastic forming, and in accordance with the present invention, it is possible to manufacture and provide a magnesium alloy case having a complex shape through superplastic forming by accurately regulating the composition and impurities content of the magnesium alloy sheet material.
    Type: Application
    Filed: January 31, 2005
    Publication date: March 5, 2009
    Applicant: National Inst. of Adv. Industrial Science & Tech
    Inventors: Yasumasa Chino, Mamoru Mabuchi, Kazuo Araki, Hiroyuki Fujii, Shunji Sakurai
  • Publication number: 20080311423
    Abstract: The invention is to provide a magnesium alloy material such as a magnesium alloy cast material or a magnesium alloy rolled material, excellent in mechanical characteristics and surface precision, a producing method capable of stably producing such material, a magnesium alloy formed article utilizing the rolled material, and a producing method therefor. The invention provides a producing method for a magnesium alloy material, including a melting step of melting a magnesium alloy in a melting furnace to obtain a molten metal, a transfer step of transferring the molten metal from the melting furnace to a molten metal reservoir, and a casting step of supplying a movable mold with the molten metal from the molten metal reservoir, through a pouring gate, and solidifying the molten metal to continuously produce a cast material. In a process from the melting step to the casting step, parts contacted by the molten metal are formed by a low-oxygen material having an oxygen content of 20 mass % or less.
    Type: Application
    Filed: June 28, 2005
    Publication date: December 18, 2008
    Inventors: Masatada Numano, Yoshihiro Nakai, Toshiya Ikeda, Taichiro Nishikawa
  • Publication number: 20080304997
    Abstract: Disclosed is a wrought magnesium alloy having excellent strength and extrusion or rolling formability, and a method of producing the same. The wrought magnesium alloy comprises 0.1-1.5 at % group IIIa, 1.0-4.0 at % group IIIb, 0.35 at % or less of one selected from the group consisting of groups IIa, IVa, VIIa, IVb, and a mixture thereof, 1.0 at % or less of group IIb, and a balance of Mg and unavoidable impurities and thus has a second phase composite microstructure. The wrought magnesium alloy of the present invention has high strength, toughness, and formability in addition to the electromagnetic wave shield ability of magnesium. Accordingly, the wrought magnesium alloy is a material useful to portable electronic goods, such as notebook personal computers, mobile phones, digital cameras, camcorders, CD players, PDA, or MP3 players, automotive parts, such as engine room hoods, oil pans, or inner panel of door, or structural parts for airplane.
    Type: Application
    Filed: March 11, 2005
    Publication date: December 11, 2008
    Applicant: PRIMOMETAL CO., LTD.
    Inventor: Kang-Hyung Kim
  • Publication number: 20080292901
    Abstract: An exemplary magnesium alloy includes: by weight, magnesium as a main ingredient, aluminum in an amount from 7.5% to 7.8%, zinc in an amount from 0.35% to 1.0%, manganese in an amount from 0.15% to 0.5%, silicon less than 0.1%, copper less than 0.03%, iron less than 0.005%, and nickel less than 0.002%. The present invention also provides a thin workpiece made of the magnesium alloy.
    Type: Application
    Filed: November 7, 2007
    Publication date: November 27, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: KAM-SHAU CHAN, CHENG-SHI CHEN, WEN-HSIEN TANG
  • Patent number: 7445751
    Abstract: A die castable magnesium based alloy comprising, by weight, between about 3 and 10% aluminum, between about 0.5 and 2.5% calcium, up to about 1.5% silicon, up to about 0.7% zinc, and the remainder being magnesium. The alloy has been found to exhibit more favorable castability and creep resistance than comparative magnesium based alloys.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: November 4, 2008
    Assignee: Chrysler LLC
    Inventor: Randy S. Beals
  • Publication number: 20080175744
    Abstract: A casting heat-resistance Mg alloy improved in heat resistance without relying upon expensive RE contains Cu. More specifically, it contains Al (8.0 weight %), Cu (1.0-5.0 weight %), Zn (2.0 weight %), Be (0.01 weight %) and Mg (the rest). The alloy can be prevented from deteriorating in corrosion resistance by adjusting the added amount of Cu to 1.0-1.5 weight %. The corrosion resistance of the alloy can be improved more by adding 0.5 to 1.0 weight % Mn as well.
    Type: Application
    Filed: April 16, 2007
    Publication date: July 24, 2008
    Inventors: Tetsuichi Motegi, Yosuke Tamura, Yukio Sanpei
  • Patent number: 7147728
    Abstract: A type of magnesium alloy that is capable of producing negative potential, characterized in that it contains 8 wt %˜9.1 wt % of aluminum (Al), 0.1 wt %˜1.0 wt % of zinc (Zn), 0.1 wt %˜1.0 wt % of manganese (Mn), 0.05 wt % or less of silicone (Si), 0.002 or less of iron (Fe), 0.0012 wt % or less of copper (Cu), 0.0009 wt % or less of nickel (Ni) and 0.0008 wt % or less of beryllium (Be), the negative potential magnesium alloy binds with calcium ions and magnesium ions to show a pH value of water quality on the alkaline side.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: December 12, 2006
    Assignee: Lightwave Nano Biotech Co., Ltd.
    Inventor: Ming-Zhu Lin
  • Patent number: 7041179
    Abstract: A magnesium based alloy containing at least 85.4 wt % Mg, 4.7 to 7.3 wt % aluminum, 0.17 to 0.60 wt % manganese, 0.0 to 0.8 wt % zinc, 1.8 to 3.2 wt % calcium, 0.3 to 2.2 wt % tin, and 0.0 to 0.5 wt % strontium. The alloy may comprising up to 0.004 wt % iron, up to 0.001 wt % nickel, up to 0.003 wt % copper, or up to 0.03 wt % silicon. In addition, the alloy may comprise up to 0.001 wt % beryllium.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: May 9, 2006
    Assignees: Dead Sea Magnesium Ltd., Volkswagen AG
    Inventors: Boris Bronfin, Eliyahu Aghion, Frank Von Buch, Soenke Schumann, Mark Katzir