Biotronik Ag

Depuy Synthes Products, Inc.

Biotronik Vi Patent Ag

Amag Rolling Gmbh

Audi Ag

Abb Research Ltd.

Eth Zuerich

Basf Aktiengesellschaft

Eidgenossische Technische Hochschule Zurich

Alstom

Heraeus Medical Gmbh

Abb Management Ag

Medizinische Universitat Graz

Ruag Munition

Friedrich-Alexander-Universitat Erlangen-Nürnberg

Peter J Uggowitzer

Joerg Loeffler

Heinz Mueller

Markus Speidel

Stefan Beck

Thomas Imwinkelried

Stefan Pogatscher

Peter Ernst

Bodo Gerold

Heinrich K Feichtinger

Carsten Melzer

Hannes Speidel

Jörg Löffler

Anja Haenzi

Minh Becker

Christian Wegmann

Helmut Antrekowitsch

Marion Werinos

Thomas Ebner

Jorg Loffler

Sebastian Vogt

Paul Smith

Klaus-Dieter Kühn

Hans Wohlfromm

Werner Hesse

Nicholas David Spencer

Gerald Stein

Marc Hummel

Klaus-Dieter Kuhn

Adriaan Bernardus Spierings

Kurt Steinhoff

Joachim Menzel

Markus O Speidel

Kirill Feldman

Gian-Carlo Gullo

Gerhard Kappelt

Alkan Gocmen

Annelie Weinberg

Brendon Scarlin

Felix Glöckel

Heinz Werner Höppel

Mark Erlwein

Lukas Stemper

Ramona Tosone

Helmut Kaufmann

Werner Fragner

Helmut Suppan

Andreas Schubert

Franz Riemelmoser

Heinrich Feichtinger

Dominik Nicolas Bosch

Jan Hauck

Heinz Werner Hoppel

Holm Bottcher

Maria KÜHLEIN

Michael Kettner

Helmut Kilian

Jörg F LÖFFLER

A sheet or strip made of a hardenable aluminum alloy, a vehicle part made therefrom, a use, and a method for producing the sheet or strip are disclosed. In order to insure a powerful paint bake response (PBR), it is proposed for the aluminum alloy to have from 4.0 to 5.5 wt % magnesium (Mg) and from 2.5 to 5.5 wt % zinc (Zn) and for it to be in the T4-FH state, wherein the wt % of magnesium (Mg) is greater than the wt % of zinc (Zn).

Sheet or strip made of a hardenable aluminum alloy, a vehicle part made therefrom, a use, and a method for producing the sheet or strip

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.

Method for producing magnesium alloy

A temperable aluminum alloy, an aluminum sheet or strip made of such an aluminum alloy, a molded part, and a method for producing such a molded part have been disclosed. In order to enable achievement of the required yield strengths, a temperable aluminum alloy is proposed, containing zinc (Zn), magnesium (Mg), silicon (Si), tin (Sn) and/or indium (In) and/or cadmium (Cd), and optionally copper (Cu), from silver (Ag), iron (Fe), manganese (Mn), titanium (Ti), and residual aluminum as well as inevitable production-related impurities, wherein the content of magnesium (Mg) and silicon (Si) fulfills the order relation

Hardenable aluminum alloy

An Al&#x2014;Mg-based or Al&#x2014;Mg&#x2014;Si-based or Al&#x2014;Zn-based or Al&#x2014;Si-based starting material in the form of a powder or wire for an additive manufacturing process, the use thereof, and an additive manufacturing process using this starting material are disclosed.

Starting material, use thereof, and additive manufacturing process using said starting material

A magnesium alloy includes &#x3c;3% by weight of Zn, &#x2264;0.6% by weight of Ca, with the rest being formed by magnesium containing impurities, which favor electrochemical potential differences and/or promote the formation of intermetallic phases, in a total amount of no more than 0.005% by weight of Fe, Si, Mn, Co, Ni, Cu, Al, Zr and P, wherein the alloy contains elements selected from the group of rare earths with the atomic number 21, 39, 57 to 71 and 89 to 103 in a total amount of no more than 0.002% by weight.

Magnesium-zinc-calcium alloy and method for producing implants containing the same

A preferred embodiment is an uncoated, biodegradable stent. The stent has a filigree structure of magnesium alloy struts. The struts of the supporting structure are arranged to permit a compressed form for introduction into the body and to permit an expanded form at the site of the application within a vessel. The magnesium alloy struts are formed of a corrodible magnesium alloy. The magnesium alloy is formed from high-purity vacuum distilled magnesium containing impurities, which promote electrochemical potential differences and/or the formation of precipitations and/or intermetallic phases. The impurities are such that the struts of the stent have a tensile strength of &#x3e;275 MPa a yield point of &#x3e;200 MPa, a yield ratio of &#x3c;0.8, a difference between tensile strength and yield point of &#x3e;50 MPa.

Corrosion resistant stent

A preferred embodiment is an uncoated, biodegradable corrosion resistant bone implant. The implant includes a body being uncoated and lacking any protective polymer, metallic or ceramic coating, the body being shaped to fix to a bone and/or bone fragment. The body is formed of a magnesium alloy. The magnesium alloy includes from high-purity vacuum distilled magnesium containing impurities, which promote electrochemical potential differences and/or the formation of precipitations and/or intermetallic phases. The impurities are such that the body has a strength of &#x3e;275 MPa, and a ratio yield point of &#x3c;0.8, wherein the difference between strength and yield point is &#x3e;50 MPa.

Uncoated biodegradable corrosion resistant bone implants

A magnesium alloy, implants and method for the production thereof. The magnesium alloy includes 1.5 to 7.0% by weight Zn, 0.5 to 3.5% by weight Al, the remainder being magnesium which contains 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.

Magnesium alloy, method for the production thereof and use thereof

An age-hardenable aluminum alloy on the basis of Al&#x2014;Mg&#x2014;Si, Al&#x2014;Zn, Al&#x2014;Zn&#x2014;Mg or Al&#x2014;Si&#x2014;Mgv has precipitates caused by natural aging. The aluminum alloy has at least one alloy element, in addition to its main alloy element or in addition to its main alloy elements, which can be correlated with quenched-in empty spaces of the aluminum alloy, particularly reducing their mobility in the crystal lattice, at such a content less than 500, particularly less than 200 atomic ppm, that the aluminum alloy forms empty spaces essentially not correlated with these precipitates, in order to reduce the negative effect of natural aging of the aluminum alloy on its further artificial aging, by mobilization of these non-correlated empty spaces.

Age-hardenable aluminum alloy and method for improving the ability of a semi-finished or finished product to age artificially

A process for producing high-purity magnesium by means of distillation at reduced pressure, characterized in that, the high-purity magnesium condenses in the liquid state, whereby the starting material in the form of a magnesium-containing melt is present together with the upper region of a condensation vessel in the upper region of a retort, whereby the retort consist of a material that releases no volatile impurities into the magnesium steam, whereby the upper region of the retort is brought to a temperature above the boiling point of magnesium, within the limits of two level lines, and is then held constant, such that steam rises from the boiling magnesium-containing metal melt and fills the interior of the upper region of the retort, whereby the steam infiltrating the upper region of the condensation vessel condenses below the lower level line and collects as high-purity melt in the lower region of the condensation vessel, and whereby in order to prevent contaminated melt that drops from the region above the upper level line from reaching the opening of the condensation vessel, this is protected by a cover, which conveys the impure magnesium back again into the melt.

Process and apparatus for vacuum distillation of high-purity magnesium

An alloy and an implant having a three-dimensional structure based on such alloy. The alloy comprises a MgZnCa alloy containing nanosized precipitates being less noble than the Mg matrix alloy and having a Zn content ranging 0.1 wt. % Zn to 2 wt. % Zn and a calcium content ranging from 0.2 wt. % to 0.5 wt. %, and having one or more other elements, with the remainder being Mg. Any second phase generated during the solidification process may be completely dissolved by a solution heat treatment. Finely dispersed nanosized precipitates can then be generated by a subsequent aging heat treatment step. These precipitates are used to 'pin' the grain boundaries and to prevent the coarsening of the grain structure during further processing to achieve grain sizes below 5 &#x3bc;m.

Magnesium alloy with adjustable degradation rate

A magnesium alloy includes 3 to 7.0% Zn, 0.001 to 0.5% Ca, the remainder being magnesium containing impurities, which promote electrochemical potential differences and/or the formation of intermetallic phases, in a total amount of no more than 0.005 of Fe, Si, Mn, Co, Ni, Cu, Al, Zr and P, wherein the alloying elements are selected from the group of the rare earths having the ordinal numbers 21, 39, 57 to 71 and 89 to 103 in a total amount of no more than 0.001% by weight.

Magnesium-zinc-calcium alloy, method for production thereof, and use thereof

An aluminum alloy and a method for improving the ability of a semi-finished or finished product to age artificially, includes an age-hardenable aluminum alloy on an Al&#x2014;Mg&#x2014;Si, Al&#x2014;Zn, Al&#x2014;Zn&#x2014;Mg or Al&#x2014;Si&#x2014;Mg basis, wherein the aluminum alloy is transformed to a solid solution state, in particular by solution heat treatment (), is quenched and subsequently forms precipitations by a process of natural aging (), the method involving at least one measure for reducing a negative effect of natural aging () of the aluminum alloy on artificial aging () thereof. In order to achieve advantageous method conditions, a measure for reducing the negative effect involves an addition of at least one alloy element which can be associated with quenched-in vacancies for the solid solution of the aluminum alloy with a proportion of under 500, in particular under 200, atomic ppm in the aluminum alloy, whereby the number of vacancies that are not associated with precipitations at the beginning of artificial aging () increases in order to reduce the negative effect of natural aging () of the aluminum alloy on the further artificial aging () thereof by mobilizing these unassociated vacancies.

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. %, having less than 0.001 wt. % of one or more other elements with the remainder being Mg.

Ultrapure magnesium alloy with adjustable degradation rate

Growing community of inventors

Ottenbach, Switzerland

Peter J Uggowitzer