H.c. Starck Gmbh

Taniobis Gmbh

H.c. Starck Tantalum and Niobium Gmbh

Holger Brumm

Christoph Schnitter

Markus Weinmann

Colin McCracken

Christine Rawohl

Helmut Haas

Melanie Stenzel

Marcel Hagymasi

Gerd Passing

Timo Langetepe

Andreas Scharf

Tomasz Kupka

Colin Mccracken

A tungsten(VI) oxytetrachloride having a chemical purity of greater than 99.95%. The tungsten(VI) oxytetrachloride has a fraction of compounds selected from WCl, WOCl, WOand WO, as defined as a ratio of a reflection having a highest intensity of one of WCl, WOCl, WOand WO, (I(P2)100) in an x-ray diffraction pattern to a reflection having a highest intensity of the tungsten(VI) oxytetrachloride (I(WOCl)100) in the x-ray diffraction pattern, expressed as I(P2)100/I(WOCl)100, of less than 0.03.

High-purity tungsten(VI) oxytetrachloride and process for preparing same

A spherical powder for manufacturing a three-dimensional component. The spherical powder is an alloy powder which has at least two refractory metals. The alloy powder has a homogeneous microstructure and at least two crystalline phases.

Spherical powder for making 3D objects

A method of using a metal powder in an additive manufacturing process. The method includes providing the metal powder, and using the metal powder in the additive manufacturing process. The metal powder is a metal which is selected from tantalum and impurities, titanium and impurities, niobium and impurities, an alloy of tantalum, niobium and impurities, an alloy of titanium, niobium and impurities, and an alloy of tantalum, titanium, niobium and impurities. Particles of the metal powder have a dendritic microstructure. Particles of the metal powder have an average aspect ratio ΨA of from 0.7 to 1, where ΨA=X/X.

Metal powder for 3D-printing

A powder for the production of a superconducting component. The powder includes NbSn, where 1≤x≤6 and 1≤y≤5, and three-dimensional agglomerates having a particle size D90 of less than 400 μm, as determined via a laser light scattering. The three-dimensional agglomerates have primary particles which have an average particle diameter of less than 15 μm, as determined via a scanning electron microscopy, and pores of which at least 90% have a diameter of from 0.1 to 20 μm, as determined via a mercury porosimetry.

Powders based on niobium-tin compounds for producing superconductive components

The present invention relates to metal powders which are suitable to be employed in 3D printing processes as well as a process for the production of said powders.

A refractory metal compound agglomerate powder having a product of a BET surface area in m/g and a sliding coefficient of &#x3b7; of 0.33 to 0.95, wherein the refractory metal compound agglomerate powder is selected from niobium agglomerate powder, niobium suboxide agglomerate powder, and tantalum agglomerate powder.

Valve metal and valve metal oxide agglomerate powders and method for the production thereof

A process for producing an anode for an electrolytic capacitor includes pressing a tantalum powder around a tantalum wire, a tantalum ribbon, or a tantalum sheet to form a pressed body. The pressed body is sintered to form a porous sintered body. The porous sintered body is cooled to form a cooled porous sintered body. The cooled porous sintered body is treated with at least one oxidant comprising at least one of a gaseous oxidant and a liquid oxidant to form a treated sintered body. The treated sintered body is anodically oxidized in an electrolyte to form a dielectric layer.

Method for producing electrolytic capacitors from valve metal powders

A niobium suboxide powder comprising niobium suboxide particles having a bulk nitrogen content of between 500 to 20,000 ppm. The nitrogen is distributed in the bulk of the powder particles. The nitrogen at least partly is present in the form of at least one of NbN crystals or niobium oxynitride crystals.

Inorganic compounds

The invention comprises semifinished products with a structured surface, the semifinished product comprising an oxidized and subsequently re-reduced surface containing at least one refractory metal, and also a process for their production and their use for producing high-capacitance components.

Semifinished products with a structured sinter-active surface and a process for their production

At least one of a valve metal sintered capacitor anode body and a suboxide valve metal sintered capacitor anode body with a particle density of &#x3e;88% of a theoretical density.

Disclosed is a niobium suboxide powder for the manufacture of capacitors with higher break down voltages, higher temperatures of operation and elongated lifetimes. The powder is doped with nitrogen which is at least partly present in the form homogeneously distributed, x-ray detectable NbN-crystal domains. The niobium suboxide powder contains niobium suboxide particles having a bulk nitrogen content of between 500 to 20,000 ppm.

Porous anode bodies suitable for use in solid state capacitors, the porous anode bodies prepared by processes which include providing a niobium suboxide powder comprising niobium suboxide particles having a bulk nitrogen content of 500 to 20,000 ppm, and agglomerating and coalescing the powder; and capacitors incorporating such anode bodies.

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Goslar, Germany

Holger Brumm