Heraeus Deutschland Gmbh & Co Kg

W.c. Heraeus Gmbh

Heraeus Precious Metals Gmbh & Co. Kg

Heraeus Materials Technology Gmbh & Co. Kg

Heraeus Medevio Gmbh & Co. Kg

Deutschland Gmbh & Co. Kg

Bernd Spaniol

Markus Jung

Andre Weigand

Tim Esposto

Norbert Traeger

Jens Trötzschel

Vera K Jüchter

Werner Feuring

Egbert Stiedl

Stephan Herbst

Friedhold Schölz

One aspect relates to a process for preparing a ring electrode including the steps of a) providing a monolithic metal precursor, wherein the monolithic metal precursor includes an outer tube forming a first cavity of the precursor, and wherein the outer tube has a wall including in one section an inner tube forming a second cavity of the precursor; b) preparing a composite precursor by inserting a first sacrificial core element into the first cavity of the precursor provided in a) and a second sacrificial core element into the second cavity of the precursor provided in a); c) forming the composite precursor obtained in b) to obtain a formed composite having a smaller outer diameter than the composite precursor obtained in b); d) separating a composite disk from the formed composite obtained in c); e) removing the first and the second sacrificial core element from the composite disk obtained in d).

Ring electrode for a medical device

Additive manufacturing method for producing moldings comprising or consisting of an element selected from the group of refractory metals, wherein refractory metal powder having an oxygen content of at least 500 mol ppm is used for the additive manufacturing method.

Additive manufacturing of refractory metals with reduced level of contamination

One aspect relates to a method for producing a ring electrode, including providing an outer element including an outer tube; providing a first inner element, including a first inner tube having a first core made of a sacrificial material, a material of the outer element and a material of the first inner element having a similar microstructure to each other; providing a second inner element, including a second core made of a sacrificial material; forming a composite tube by arranging the first inner element and the second inner element inside the outer element, the first inner element and the second inner element being arranged eccentrically; drawing the composite tube in a longitudinal direction of the composite tube, the material of the outer element and the material of the first inner element retaining a similar microstructure; separating a composite tube disk from the composite tube; removing the sacrificial material of the first core; and removing the sacrificial material of the second core to obtain a contacting opening in the ring electrode.

Ring electrode with intermediate diffusion layer

One aspect relates to a process for preparing a shaped metal product, wherein a monolithic metal precursor surrounded by a sacrificial outer element is formed to smaller dimensions, and the sacrificial material is subsequently removed. One aspect further provides a composite for preparing a shaped metal product, and a shaped metal product. Such shaped metal products can be used to manufacture an active implantable medical device or sensor.

Forming process using an outer sacrificial layer

One aspect relates to a method for a ring electrode, including: providing an outer element with an outer tube and providing a first inner element with a first inner tube having a first core made of a sacrificial material. A material of the outer element and a material of the first inner element have a similar microstructure. A second inner element is provided with a second core made of a sacrificial material; A connection tube is formed by arranging the first inner element and the second inner element within the outer element. The first inner element and the second inner element are arranged concentrically. The composite tube is drawn in a longitudinal direction of the composite tube. The material of the outer element and the material of the first inner element maintain a simialar microstructure. A connection tube disc is seperated from the connection tube. The sacrificial material of the first core is removed and the sacrificial material of the second core is removed to obtain a contacting opening in the ring electrode.

Multilayer ring electrode having a plurality of openings

The invention relates to a method for cutting refractory metals, in which a solid body () made of a refractory metal is mechanically machining cut with a cutting apparatus (), wherein the cutting apparatus () is wetted for cutting with a fluid () having at least 50 weight % water, wherein the cutting apparatus () is brought to a positive electrical potential in relation to the solid body () during cutting. The invention also relates to a disc produced from a refractory metal using such a method, and such a disc that has an oxide layer with a thickness of between 2 nm and 1,000 nm on the cutting surface.

Method for cutting refractory metals

The invention relates to a molded article made of a metallic molybdenum-based alloy with at least 3 wt. % up to a maximum of 8 wt. % aluminum, at least 3 wt. % up to a maximum of 6 wt. % titanium and, as the remainder, molybdenum including the usual impurities, wherein the molded article is produced directly or indirectly by means of solidification from a melt. The invention also relates to a method for producing a molded article and to the use of such a molded article.

Molded article made of a molybdenum-aluminum-titanium alloy

A metallic material is made from at least one refractory metal or an alloy based on at least one refractory metal. The metallic material has an oxygen content of about 1,000 to about 30,000 &#x3bc;g/g and the oxygen is interstitial.

Metallic material and methods of making and using same

A process for providing a niobium wire and its use for connection to niobium or niobium oxide capacitors. The wire is enriched with oxygen and preferably has oxygen concentrations of about 3,000 to 30,000 &#x3bc;g/g.

Oxygen-enriched niobium wire

A highly heat resistant wire based on niobium or tantalum or niobium tantalum alloy for single-side socket lamps is enriched, according to the invention, with phosphorus and converted into an annealed state. The wire exhibits a yield strength Rp 0.2 of at least 200 MPa or a tensile strength Rm of at least 300 MPa. For the production of a frame for single-side socket lamps, a metal based on niobium or tantalum or an alloy thereof is doped with phosphorus and the doped metal is cold shaped into a wire, this wire is annealed and formed into a frame. This frame is used for the simultaneous current supply and holding of a burner in a single-side socket lamp.

Wire and frame, in particular niobium-based, for single-side socket lamps and a method for the production and use thereof

High temperature-resistant niobium wire enriched with phosphorous is suitable as a connecting wire for niobium, niobium oxide, or tantalum capacitors.

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Hammersbach, Germany

Bernd Spaniol