Lanthanide Containing Patents (Class 420/405)
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Patent number: 12123086Abstract: A method for producing a magnesium alloy having improved mechanical and electrochemical properties. The method includes generating a high-purity magnesium by vacuum distillation. A billet of the alloy is generated by synthesis of the high-purity magnesium with 2.0 to 10.0% by weight Al, the remainder being magnesium containing impurities, which promote electrochemical potential differences and/or the formation of precipitations and/or intermetallic phases, in a total amount of no more than 0.0063% by weight of Fe, Si, Mn, Co, Ni, Cu, Zr, Y, Sc or rare earths having the ordinal numbers 21, 57 to 71 and 89 to 103, Be, Cd, In, Sn and/or Pb as well as P, wherein the matrix of the alloy includes intermetallic phases formed of Mg and Al. The alloy is homogenized by annealing at a temperature between 150° C. and 450° C. The homogenized alloy is formed in the temperature range between 200° C. and 400° C.Type: GrantFiled: February 25, 2021Date of Patent: October 22, 2024Assignee: BIOTRONIK AGInventors: Heinz Mueller, Peter Uggowitzer, Joerg Loeffler
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Patent number: 10947609Abstract: The present invention is to provide a magnesium alloy comprising 0.001 parts by weight to 1.0 parts by weight of scandium and the balance of magnesium and unavoidable impurities, based on 100 parts by weight of a magnesium alloy, wherein the magnesium alloy has increased Fe solubility and reduced corrosion while providing excellent mechanical properties and corrosion resistance, and a method for producing the same. The magnesium alloy of the present invention can improve the corrosion resistance of the magnesium alloy by using scandium which can simultaneously prevent from microgalvanic corrosion between a substrate and impurities without deteriorating mechanical properties and improve the passivation property of the coating formed on the surface.Type: GrantFiled: November 30, 2016Date of Patent: March 16, 2021Assignee: KOREA INSTITUTE OF MATERIALS SCIENCEInventors: Chang-Dong YiM, Bong-Sun You, Ha-Sik Kim, Young-Min Kim, Byoung-Gi Moon, Jun-Ho Bae
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Patent number: 10842911Abstract: Provided are an alloy member which is usable in organisms, makes use of features of bio-affinity and biodegradability of magnesium, and is able to realize required duration of biodegradability, and a production method therefor. According to the present invention, the alloy member usable in organisms includes a base body that contains a magnesium alloy, a first protective layer that contains an oxide derived from a component of the base body or a complex of an oxide and a hydroxide derived from a component of the base body, and a second protective layer that contains a hydroxide derived from a component of the base body.Type: GrantFiled: August 18, 2016Date of Patent: November 24, 2020Assignees: FUJI LIGHT METAL CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, MEL-FRONTIER, LTD.Inventors: Hironori Ueda, Masashi Inoue, Kotaro Hanada
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Patent number: 10767248Abstract: Disclosed is a magnesium alloy that has high thermal conductivity and flame retardancy and facilitates plastic working, wherein magnesium is added with 0.5 to 5 wt % of zinc (Zn) and 0.3 to 2.0 wt % of at least one of yttrium (Y) and mischmetal, with, as necessary, 1.0 wt % or less of at least one selected from among calcium (Ca), silicon (Si), manganese (Mn) and tin (Sn), the total amount of alloy elements being 2.5 to 6 wt %. A method of manufacturing the same is also provided, including preparing a magnesium-zinc alloy melt in a melting furnace, adding high-melting-point elements in the form of a master alloy and melting them, and performing mechanical stirring during cooling of a cast material in a continuous casting mold containing the magnesium alloy melt, thus producing a magnesium alloy cast material having low segregation, after which a chill is removed from the cast material or diffusion annealing is performed, followed by molding through a tempering process such as rolling, extrusion or forging.Type: GrantFiled: February 24, 2016Date of Patent: September 8, 2020Inventor: In-Young Lee
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Patent number: 10745782Abstract: Magnesium alloys comprising a long period stacking order (LPSO) phase having an 14H-i or an 18R-i structure are provided. The alloys comprise magnesium as a majority element, a first alloying element that is larger than magnesium and a second alloying element that is smaller than magnesium.Type: GrantFiled: May 16, 2018Date of Patent: August 18, 2020Assignee: Northwestern UniversityInventors: Christopher M. Wolverton, James E. Saal
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Patent number: 10711330Abstract: Magnesium-aluminum corrosion-resistant alloys are provided and include magnesium, aluminum, germanium, small amounts of cathodic reaction active site impurities such as iron, copper, nickel, and cobalt, manganese, and optionally tin. The alloy can include up to about 0.75% germanium, at least about 2.5% aluminum, up to about 2.25% tin, at most 0.0055% iron impurities, and at most 0.125% silicon impurities. The ratio of germanium to iron can be less than 150. The ratio of manganese to iron can be at least 75. The alloy can comprise one or more intermetallic complexes, including magnesium-germanium, magnesium-aluminum, and aluminum-manganese intermetallic complexes.Type: GrantFiled: October 24, 2017Date of Patent: July 14, 2020Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Yang Guo, Ming Liu, Anil K. Sachdev
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Patent number: 10519530Abstract: The present disclosure provides a magnesium alloy and a preparation method and an application thereof. Based on the total weight of the magnesium alloy, the magnesium alloy includes 0.8-1.4 wt % of rare earth element, 0.01-0.2 wt % of R, 0.8-1.5 wt % of Mn, 0-0.01 wt % of Fe, 0-0.01 wt % of Cu, 0-0.01 wt % of Ni, 0-0.01 wt % of Co, 0-0.01 wt % of Sn, 0-0.01 wt % of Ca, and 96.84-98.39 wt % of Mg, wherein R is at least one selected from Al and Zn.Type: GrantFiled: April 8, 2015Date of Patent: December 31, 2019Assignee: BYD COMPANY LIMITEDInventors: Faliang Zhang, Youping Ren
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Patent number: 10358703Abstract: The present disclosure provides a magnesium alloy and a preparation method and an application thereof. Based on the total weight of the magnesium alloy, the magnesium alloy includes 2-3.5 wt % of Ce, 0.01-0.2 wt % of R, 0.8-1.5 wt % of Mn, 0-0.01 wt % of Fe, 0-0.01 wt % of Cu, 0-0.01 wt % of Ni, 0-0.01 wt % of Co, 0-0.01 wt % of Sn, 0-0.01 wt % of Ca, and 94.74-97.19 wt % of Mg, wherein R is at least one selected from Al and Zn.Type: GrantFiled: April 8, 2015Date of Patent: July 23, 2019Assignee: BYD COMPANY LIMITEDInventors: Faliang Zhang, Youping Ren, Qing Gong
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Patent number: 10156004Abstract: The aluminum-free magnesium alloy has a composition of at least 87.5 wt. % magnesium, produced by adding 0.5 to 2.0 wt. % cerium, 0.2 to 2.0 wt. % lanthanum, 0 to 5 wt. % of at least one further metal from the group of the rare earths, 1.5 to 3.0 wt. % of a manganese compound, and 0 to 0.5 wt. % of a phosphorus compound.Type: GrantFiled: April 8, 2014Date of Patent: December 18, 2018Inventor: Ulrich Bruhnke
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Patent number: 9920402Abstract: Magnesium alloys which possess good processability and/or ductility while retaining good resistance to corrosion and/or degradation comprising Y: 0-10% by weight, Nd: 0-5% by weight, wherein the total of Y+Nd is at least 0.05% by weight, one or more heavy rare earths selected from Ho, Lu, Tm and Tb in a total amount of above 0.5% and no more than 5.5% by weight, Gd: 0-3.0% by weight, and Sm: 0-0.2% by weight. The alloy optionally includes one or more of: Dy: 0-8% by weight; Zr: 0-1.2% by weight; Al: 0-7.5% by weight; Zn and/or Mn: 0-2% by weight in total; Sc: 0-15% by weight; In: 0-15% by weight; Ca: 0-3% by weight; Er up to 5.5% by weight, provided that the total of Er, Ho, Lu, Tm and Tb is no more than 5.5% by weight; and one or more rare earths and heavy rare earths other than Y, Nd, Ho, Lu, Tm, Tb, Dy, Gd and Er in a total amount of up to 0.5% by weight; the balance being magnesium and incidental impurities up to a total of 0.3% by weight.Type: GrantFiled: March 23, 2011Date of Patent: March 20, 2018Assignee: Magnesium Elektron LimitedInventor: Paul Lyon
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Patent number: 9702029Abstract: Downhole tools having at least one component made of a doped magnesium alloy solid solution that at least partially degrades in the presence of an electrolyte, wherein the doped magnesium alloy is selected from the group consisting of a doped MG magnesium alloy, a doped WE magnesium alloy, a doped AZ magnesium alloy, a doped ZK magnesium alloy, a doped AM magnesium alloy, and any combination thereof.Type: GrantFiled: June 30, 2015Date of Patent: July 11, 2017Assignee: Halliburton Energy Services, Inc.Inventors: Michael Linley Fripp, Zachary William Walton
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Patent number: 9644249Abstract: A process for producing an aluminum-scandium based alloy from aluminum and scandium chloride, the process also producing aluminum chloride as a by-product and including the step of reducing scandium chloride in the presence of aluminum in a reaction zone and under reaction conditions which favor production of the aluminum-scandium based alloy.Type: GrantFiled: March 14, 2014Date of Patent: May 9, 2017Assignee: THE COMMONWEALTH OF AUSTRALIA COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATIONInventor: Jawad Haidar
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Patent number: 9345819Abstract: A marker alloy foreign implant made of a biodegradable metallic material and having the composition MgxYbyMz wherein x is equal to 10-60 atomic percent; y is equal to 40-90 atomic percent; z is equal to 0-10 atomic percent; M is one or more element selected from the group consisting of Ag, Zn, Au, Ga, Pd, Pt, Al, Sn, Ca, Nd, Ba, Si, and Ge; and wherein x, y, and z, together, and including contaminants caused by production, result in 100 atomic percent.Type: GrantFiled: June 20, 2011Date of Patent: May 24, 2016Assignee: BIOTRONIK VI PATENT AGInventors: Bruno Zberg, Bodo Gerold, Joerg Loeffler
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Patent number: 9074269Abstract: A magnesium alloy having Y, Zn, Ca, Mn, Ag, Ce, Zr, or Si. The alloy is distinguished in that, in the event of suitable treatment, the alloy is convertible into a very fine-grained microstructure, in particular, having grain sizes less than 20 ?m. The alloy components are not or are hardly toxicologically relevant.Type: GrantFiled: March 27, 2007Date of Patent: July 7, 2015Assignee: BIOTRONIK VI Patent AGInventors: Bodo Gerold, Heinz Mueller, Joerg Loeffler, Anja Haenzi, Peter Uggowitzer
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Patent number: 9017603Abstract: Magnesium-based hydrogen storage alloys with addition of transition and rare earth elements were produced by conventional induction melting and by rapid solidification. The magnesium based-alloys of this invention posses reversible hydrogen storage capacities ranging from 3 to over 6 wt. %, and excellent performance on the hydrogen absorption and desorption kinetics.Type: GrantFiled: June 6, 2007Date of Patent: April 28, 2015Assignee: COPPE/UFRJ—Coordenacao dos Programmas de Pos Graduacao de Enganharla da Universidade Federal do Rio de JaneiroInventors: Paulo Emílio Valadão De Miranda, Glória Isabel Duarte Poveda, Luiz Alberto da Cunha Bustamante
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Publication number: 20150083285Abstract: A magnesium alloy of the present invention has the chemical composition that contains 0.02 mol % or more and less than 0.1 mol % of at least one element selected from yttrium, scandium, and lanthanoid rare earth elements, and magnesium and unavoidable impurities accounting for the remainder. A magnesium alloy member of the present invention is produced by hot plastic working of the magnesium alloy in a temperature range of 200° C. to 550° C., followed by an isothermal heat treatment performed in a temperature range of 300° C. to 600° C. The magnesium alloy is preferred for use in applications such as in automobiles, railcars, and aerospace flying objects. The magnesium alloy and the magnesium alloy member can overcome the yielding stress anisotropy problem, and are less vulnerable to the rising price of rare earth elements.Type: ApplicationFiled: May 28, 2013Publication date: March 26, 2015Inventors: Hidetoshi Somekawa, Yoshiaki Osawa, Toshiji Mukai, Alok Singh, Kota Washio, Akira Kato
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Publication number: 20150086413Abstract: Magnesium alloys comprising a long period stacking order (LPSO) phase having an 14H-i or an 18R-i structure are provided. The alloys comprise magnesium as a majority element, a first alloying element that is larger than magnesium and a second alloying element that is smaller than magnesium. The first alloying elements include non-rare earth elements.Type: ApplicationFiled: September 25, 2014Publication date: March 26, 2015Inventors: Christopher M. Wolverton, James E. Saal
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Publication number: 20150064053Abstract: A pseudoelastic magnesium alloy contains magnesium as the main component thereof, and at least one element selected from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, wherein the pseudoelastic magnesium alloy has a unidirectional crystal structure.Type: ApplicationFiled: September 2, 2014Publication date: March 5, 2015Inventors: Kota Washio, Seiji Miura
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Publication number: 20150023836Abstract: This invention provides a high-strength and high-toughness metal which has strength and toughness each high enough to be put to practical use in expanded applications of magnesium alloys, and a process for producing the same. The high-strength and high-toughness metal is a magnesium alloy comprising a crystal structure containing an hcp-structure magnesium phase and a long-period layered structure phase. At least a part of the long-period layered structure phase is in a curved or flexed state. The magnesium alloy comprises a atomic % of Zn and b atomic % of Gd with the balance consisting of Mg.Type: ApplicationFiled: July 28, 2014Publication date: January 22, 2015Inventors: Yoshihito KAWAMURA, Michiaki YAMASAKI
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Publication number: 20150017057Abstract: 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: ApplicationFiled: August 4, 2014Publication date: January 15, 2015Inventors: Ryuichi INOUE, Nozomu KAWABE, Nobuyuki MORI, Masatada NUMANO, Junichi MATSUMOTO, Motonori NAKAMURA, Masayuki NISHIZAWA, Atsushi KIMURA, Yukihiro OISHI
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Publication number: 20140332121Abstract: 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: ApplicationFiled: July 25, 2014Publication date: November 13, 2014Applicant: KOREA INSTITUTE OF MACHINERY AND MATERIALSInventors: Sung Hyuk Park, Young Min Kim, Ha-Sik Kim, Bong Sun You, Chang Dong Yim
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Patent number: 8728254Abstract: Provided is a Mg alloy, in which precipitated particles are dispersed and which has enhanced tensile strength regardless of the size of the magnesium matrix grains therein.Type: GrantFiled: March 23, 2010Date of Patent: May 20, 2014Assignee: National Institute for Materials ScienceInventors: Alok Singh, Hidetoshi Somekawa, Toshiji Mukai, Yoshiaki Osawa
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Publication number: 20140065009Abstract: An alloy and an implant having a three-dimensional structure based on such alloy. The alloy comprises a monophasic MgZn alloy containing from 2.0 wt. % Zn to 6 wt. % Zn, having less than 0.001 wt. % of one or more other elements with the remainder being Mg. In some embodiments, the alloy is substantially free of microgalvanic elements. In some embodiments, the alloy includes a MgZnCa alloy containing nanosized precipitates being less noble than the Mg matrix alloy and having a Zn content ranging from 3.0 wt. % Zn to 6 wt. % Zn and a calcium content ranging from 0.0005 wt. % to 1.0 wt. %, having less than 0.001 wt. % of one or more other elements with the remainder being Mg. In other embodiments, the alloy includes a MgZnCa alloy containing nanosized precipitates being less noble than the Mg matrix alloy, a plurality of nanosized precipitates being more noble than the Mg matrix and having a Zn content ranging from 3.0 wt. % Zn to 6 wt. % Zn, a calcium content ranging from 0.0005 wt. % to 1.0 wt.Type: ApplicationFiled: March 14, 2013Publication date: March 6, 2014Inventors: Thomas Imwinkelried, Stefan Beck, Peter Uggowitzer
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Publication number: 20140044586Abstract: The present invention provides magnesium alloy which has sufficiently high strength at room temperature and high temperature. Disclosed is a magnesium alloy comprising: aluminum (Al): 14.0 to 23.0% by mass, calcium (Ca): 11.0% by mass or less (not including 0% by mass), strontium (Sr): 12.0% by mass or less (not including 0% by mass), and zinc (Zn): 0.2 to 1.0% by mass.Type: ApplicationFiled: March 28, 2012Publication date: February 13, 2014Inventors: Kinji Hirai, Kenji Higashi, Yorinobu Takigawa, Tokuteru Uesugi
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Publication number: 20130199677Abstract: An improved magnesium-based alloy for wrought applications is disclosed, including a method of fabricating alloy sheet from said alloy. The improved magnesium-based alloy consists of: 0.5 to 4.0% by weight zinc; 0.02 to 0.70% by weight a rare earth element, or mixture of the same including gadolinium; and incidental impurities. The rare earth clement in some embodiments may be yttrium and/or gadolinium. In some embodiments the magnesium-based alloy may also consist of a grain refiner and in some embodiments the grain refiner may be zirconium. In combination, the inclusion of zinc and a rare earth element, into the magnesium alloy may have enhanced capacity for rolling workability, deep drawing at low temperatures and stretch formability at room temperature. The improved alloy may also exhibit increased tensile strength and formability while evincing a reduced tendency for tearing during preparation.Type: ApplicationFiled: May 24, 2011Publication date: August 8, 2013Applicant: Commonwealth Scientific and Industrial Research OrganisationInventors: Kishore Venkatesan, Wendy Elizabeth Borbidge, Michael Edward Kellam, Daniel Liang, Peter Adrian Lynch, Guangsheng Song
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Patent number: 8475608Abstract: 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: GrantFiled: November 25, 2005Date of Patent: July 2, 2013Assignee: Japan Metals and Chemicals Co., Ltd.Inventors: Masahito Osawa, Hidenori Tomioka, Naoyoshi Terashita, Noboru Hayami, Shigeru Tsunokake
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Publication number: 20130144290Abstract: The invention relates to a magnesium alloy containing (in % by weight) more than 0.0 to 7.0% zinc, optionally more than 0.0 to 1.0% zirconium, optionally more than 0.0 to 1.0% calcium, optionally more than 0.0 to 1.0% manganese, optionally more than 0.0 to 0.5% silicon, optionally more than 0.0 to 1.0% silver, a max. up to 0.5% aluminum and at least one element selected from the group comprising more than 0.05 to 0.6% yttrium, more than 0.05 to 4.0% ytterbium, more than 0.05 to 4.0% gadolinium, with the residue being magnesium and impurities due to production. The invention also relates to a use of a magnesium alloy of this type and an implant therefrom and a method for producing a body of a magnesium alloy according to the invention.Type: ApplicationFiled: June 15, 2011Publication date: June 6, 2013Applicant: AIT AUSTRIAN INSTITUTE OF TECHNOLOGY GMBHInventors: Andreas Schiffl, Bernhard Mingler
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Patent number: 8435444Abstract: Magnesium alloy having the composition Manganese 1.5 to 2.2 Cerium 0.5 to 2.0 Lanthanum 0.2 to 2.0, these figures indicating the weight percent for the alloy, and magnesium and production-related impurities accounting for the remainder of the alloy to 100 wt. %.Type: GrantFiled: August 26, 2009Date of Patent: May 7, 2013Assignee: TechMag AGInventor: Peter Stolfig
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Publication number: 20130101458Abstract: A magnesium alloy includes about 7.0 to about 8.0 wt % aluminum, about 0.45 wt % to about 0.90 wt % zinc, about 0.17 wt % to about 0.40 wt % manganese, about 0.50 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 for making the magnesium alloy is also provided.Type: ApplicationFiled: December 6, 2011Publication date: April 25, 2013Applicants: FOXCONN TECHNOLOGY CO., LTD., FU ZHUN PRECISION INDUSTRY (SHEN ZHEN) CO., LTD.Inventors: JIE WANG, HSIEN-TSUNG LI, KAM-SHAU CHAN, XING-XING WANG, RUI-FENG FAN, YI LI, JUN-FENG ZHAO
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Publication number: 20130089457Abstract: Provided is a composite material suitable for forming a part for continuous casting capable of producing cast materials of excellent surface quality for a long period of time and with which a molten metal is inhibited from flowing into a gap between a nozzle and a moving mold. A composite material (nozzle 1) includes a porous body 2 having a large number of pores and a filler incorporated in at least part of a portion that comes into contact with the molten metal, the portion being part of a surface portion of the porous body. The filler incorporated in the porous body 2 is at least one selected from a nitride, a carbide, and carbon.Type: ApplicationFiled: June 3, 2011Publication date: April 11, 2013Applicant: Sumitomo Electric Industries LtdInventors: Michimasa Miyanaga, Takeshi Uchihara, Masatada Numano, Yukihiro Oishi, Nozomu Kawabe
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Patent number: 8361251Abstract: A magnesium alloy comprising up to about six weight percent zinc and up to about one weight percent cerium may be hot worked to produce an intermediate or final alloy workpiece that exhibits enhanced ductility and strength at room temperature. The addition of zinc and a small amount of cerium may affect the magnesium alloy by increasing strength and ductility, and improving the work hardening behavior.Type: GrantFiled: October 20, 2008Date of Patent: January 29, 2013Assignee: GM Global Technology Operations LLCInventors: Aihua A. Luo, Raja K Mishra, Anil K. Sachdev
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Patent number: 8329094Abstract: A magnesium alloy having excellent strength and elongation at high temperatures and further having excellent creep characteristics at high temperatures. Also provided is a process for producing the alloy. In producing the magnesium alloy, a magnesium alloy containing yttrium and samarium in respective specific amounts is cast and the resultant cast is subjected to a solution heat treatment, subsequently hot working, and then an aging treatment, thereby reducing the average crystal grain diameter of the structure. In addition, the amounts of the yttrium and samarium in solution in the magnesium matrix are balanced with the number of precipitate particles of a specific size in the crystal grains. The magnesium alloy thus obtained has excellent strength and elongation at high temperatures and further having excellent creep characteristics at high temperatures.Type: GrantFiled: March 30, 2009Date of Patent: December 11, 2012Assignee: Kobe Steel, Ltd.Inventors: Toshiaki Takagi, Mamoru Nagao
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Publication number: 20120269674Abstract: 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: ApplicationFiled: October 23, 2011Publication date: October 25, 2012Applicants: 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
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Patent number: 8293031Abstract: A magnesium alloy, comprising: Y: 0.5-10? Zn: 0.5-6?? Ca: 0.05-1?? Mn: ??0-0.5 Ag: 0-1 Ce: 0-1 Zr: 0-1 or Si: 0-0.4, wherein the amounts are based on weight-percent of the alloy and Mg, and manufacturing-related impurities constitute the remainder of the alloy to a total of 100 weight-percent. Also disclosed is a method for manufacturing such an alloy and a biodegradable implant formed therefrom.Type: GrantFiled: July 27, 2007Date of Patent: October 23, 2012Assignee: Biotronik VI Patent AGInventors: Bodo Gerold, Heinz Mueller, Joerg Loeffler, Anja Haenzi, Peter Uggowitzer
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Patent number: 8268235Abstract: An implant consisting entirely or in part of a biocorrodible magnesium alloy having the composition Gd: 2.7-15.0 wt %, Zn: 0-0.5 wt %, Zr: 0.2-1.0 wt %, Nd: 0-4.5 wt %, Y: 0-2.0 wt %, where magnesium and impurities due to the production process account for the remainder to a total of 100 wt %.Type: GrantFiled: December 17, 2009Date of Patent: September 18, 2012Assignee: Biotronik VI Patent AGInventor: Bodo Gerold
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Publication number: 20120215301Abstract: The present invention relates to biodegradable implantable medical device, in particular an endoprosthesis body formed at least partly from a constructional material comprising deformable super-pure magnesium or alloy thereof further comprising one or more super-pure alloying elements. The constructional material has a high formability at room temperature, excellent corrosion stability in vivo, an optimum combination of mechanical properties (strength, plasticity) ideally suited for biodegradable endoprosthesises, particularly stents, as such and for various other technical applications.Type: ApplicationFiled: October 29, 2010Publication date: August 23, 2012Applicant: Acrostak Corp BVI, TortolaInventors: Igor Isakovich Papirov, Anatoliy Ivanovich Pikalov, Sergey Vladimirovich Sivtsov, Vladimir Sergeevich Shokurov, Youri Popowski
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Publication number: 20120195787Abstract: The present invention relates to single-phase solid solution magnesium alloys suitable for the applications as cast or wrought. These alloys are prepared by multi-microalloying with rare earth elements (including gadolinium, yttrium, dysprosium, samarium, lanthanum, cerium, neodymium and praseodymium). Each alloy contains 0.5 to less than 5 wt. % rare earth elements with a content of 0.05-2.0% by weight. The total amount of rare earth elements is controlled below 5% by weight in order for economical considerations. The amount of grain refiner calcium or zirconium is in the range of 0.05-0.6% by weight. These alloys can be prepared by die casting, permanent casting, chill casting, semi-solid processes, continuous casting and continuous twin roll casting.Type: ApplicationFiled: January 18, 2012Publication date: August 2, 2012Applicant: Helmholtz-Zentrum Geesthacht Zentrum fun Material-und Kustenforschung GmbHInventors: Yuanding Huang, Qiumin Peng, Norbert Hort, Karl U. Kainer
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Publication number: 20120107171Abstract: 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: ApplicationFiled: June 8, 2010Publication date: May 3, 2012Applicant: Sumitomo Electric Industries, Ltd.Inventors: Takahiho Kitamura, Yukihiro Oishi, Nozomu Kawabe
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Publication number: 20110311456Abstract: A marker alloy foreign implant made of a biodegradable metallic material and having the composition MgxYbyMz wherein x is equal to 10-60 atomic percent; y is equal to 40-90 atomic percent; z is equal to 0-10 atomic percent; M is one or more element selected from the group consisting of Ag, Zn, Au, Ga, Pd, Pt, Al, Sn, Ca, Nd, Ba, Si, and Ge; and wherein x, y, and z, together, and including contaminants caused by production, result in 100 atomic percent.Type: ApplicationFiled: June 20, 2011Publication date: December 22, 2011Applicant: BIOTRONIK VI PATENT AGInventors: Bruno Zberg, Bodo Gerold, Joerg Loeffler
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Publication number: 20110286880Abstract: One exemplary embodiment includes a cast alloy including Al present in an amount of about 6.5 wt % to about 9.0 wt %; Sn present in an amount of about 1.0 wt % to about 3.0 wt %; Ce present in an amount of about 0 wt % to about 1.0 wt %; and, Mg comprising a balance of the alloy minus an amount of minor and trace elements wherein Mg is present at an amount of greater than about 85 wt %.Type: ApplicationFiled: July 29, 2011Publication date: November 24, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Aihua A. Luo, Anil K. Sachdev
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Publication number: 20110272069Abstract: A magnesium-based alloy consisting of, by weight: 0.5 to 1.5% manganese, 0.05 to 0.5% rare earth of which more than 70% is lanthanum, 0 to 1.5% zinc and 0 to 0.1% strontium, the balance being magnesium except for incidental impurities.Type: ApplicationFiled: August 29, 2008Publication date: November 10, 2011Applicant: CAST CRC LIMITEDInventors: Matthew Robert Barnett, Christopher Huw John Davies, Aiden Graeme Beer
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Patent number: 8016955Abstract: Disclosed is a magnesium based amorphous alloy having a good glass forming ability and ductility. The Mg based amorphous alloy has a composition range of Mg100-x-yAxBy where x and y are respectively 2.5?x?30, 2.5?y?20 in atomic percent. Here, A includes at least one element selected from the group consisting of Cu, Ni, Zn, Al, Ag, and Pd, and B includes at least one element selected from the group consisting of Gd, Y, Ca, and Nd.Type: GrantFiled: June 14, 2005Date of Patent: September 13, 2011Assignee: Yonsei UniversityInventors: Eun Soo Park, Men Hua, Do Hyang Kim, Hye Jung Chang, Ju Yeon Lee, Joon Seok Kyeong
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Publication number: 20110192500Abstract: A magnesium alloy shown includes magnesium as a principal ingredient, and 0.5 to 8.0 percent ytterbium; 0.1 to 2.0 percent calcium; and 0.2 to 6.0 percent zinc, percentages calculated by weight. The magnesium alloy may be employed as an implant. Examples of implants include a plate, specifically a bone plate, a screw, a nail, a bone nail, a stent, a rod. Implants made of the specified alloy are suitable for implantation in animal or human body.Type: ApplicationFiled: May 21, 2009Publication date: August 11, 2011Applicant: Synthes USA, LLCInventors: Peter Uggowitzer, Petra Gunde, Joerg Loeffler, Thomas Imwinkelried, Stefan Beck, Andrea Montali
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Publication number: 20110135532Abstract: The present invention has as its object to provide an Mg-based alloy cold worked member which can remarkably lower the load weight required for cold plastic working and enables practical usage of the same. The present invention is an Mg-based alloy cold worked member obtained by cold working an Mg-based alloy to form it into a predetermined shape, characterized by having a microstructure which includes crystal grains divided and made finer by cold working.Type: ApplicationFiled: July 22, 2009Publication date: June 9, 2011Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Toshiji Mukai, Hidetoshi Somekawa, Tetsuya Shoji, Akira Kato
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Patent number: 7942986Abstract: 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: GrantFiled: August 21, 2009Date of Patent: May 17, 2011Assignee: Cast Centre Pty LtdInventors: Colleen Joyce Bettles, Mark Antony Gibson
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Publication number: 20110048169Abstract: Magnesium alloy having the composition Manganese 1.5 to 2.2 Cerium 0.5 to 2.0 Lanthanum 0.2 to 2.0, these figures indicating the weight percent for the alloy, and magnesium and production-related impurities accounting for the remainder of the alloy to 100 wt. %.Type: ApplicationFiled: August 26, 2009Publication date: March 3, 2011Inventor: Peter Stolfig
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Publication number: 20100316524Abstract: A magnesium alloy includes 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: ApplicationFiled: July 31, 2009Publication date: December 16, 2010Applicants: FU ZHUN PRECISION INDUSTRY (SHEN ZHEN) CO., LTD., FOXCONN TECHNOLOGY CO., LTD.Inventors: KUO-JUNG CHUNG, HAI-TAO HUANG, FEI-YAN XIAO, KAM-SHAU CHAN, HSIEN-TSUNG LI, BIN-LUNG OU
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Publication number: 20100310409Abstract: A magnesium based alloy consisting of, by weight: 2-5% rare earth elements, wherein the alloy contains lanthanum and cerium as rare earth elements and the lanthanum content is greater than the cerium content; 0.2-0.8% zinc; 0-0.15% aluminium; 0-0.5% yttrium or gadolinium; 0-0.2% zirconium, 0-0.3% manganese; 0-0.1% calcium; 0-25 ppm beryllium; and the remainder being magnesium except for incidental impurities.Type: ApplicationFiled: December 23, 2008Publication date: December 9, 2010Applicant: CAST CRC LIMITEDInventors: Mark Gibson, Mark Easton, Colleen BETTLES
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Patent number: 7744814Abstract: Methods for producing a magnesium-rare earth intermediate alloy, which belongs to the technical field of molten salt electrolytic metallurgical technology. In one embodiment, the method comprises subjecting magnesium chloride, lanthanum praseodymium cerium chloride and potassium chloride to an electrolysis, and adding additional lanthanum praseodymium cerium chloride and magnesium chloride during the electrolysis. In the electrolysis process, neither metal magnesium nor rare earth metal is used, only the chlorides of rare earths and magnesium are used and the rare earth ions and the magnesium ions are co-electrodeposited on the cathode, so as to obtain the intermediate alloy having a melting point close to the eutectic temperature of the rare earth and magnesium. The method has various advantages including but not limited to high operability, simple process and equipment, stable quality of product by mass production and easy for commercial scale production.Type: GrantFiled: December 23, 2008Date of Patent: June 29, 2010Assignee: Changchun Institute of Applied Chemistry Chinese Academy of SciencesInventors: Jian Meng, Daqing Fang, Deping Zhang, Jiacheng Shen, Dingxiang Tang, Hongjie Zhang
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Publication number: 20100161031Abstract: The present invention relates to compositions and structure of deformable alloys on the basis of magnesium with an optimum combination of mechanical properties (strength, plasticity) and a resistance to corrosion, including in vivo. Alloys of the new group possess an excellent formability at room temperature, high corrosion stability in sodium chloride solution, excellent heat resistance and can be used in various technical applications, particularly in vivo as a structural material for stents.Type: ApplicationFiled: May 5, 2008Publication date: June 24, 2010Inventors: Igor Isakovich Papirov, Anatoliy Ivanovitch Pikalov, Vladimir Sergeevitch Shokurov, Sergey Vladimirovitch Sivtsov