H.c. Starck Gmbh

H.c. Starck Hermdorf Gmbh

Henning Uhlenhut

Prabhat Kumar

Paul R Aimone

Steven Alfred Miller

Peter R Jepson

Robert W Balliett

Howard V Goldberg

Anthony V Parise

Uwe Blumling

Bernd Dobling

Michael Svec

Thomas M Ramlow

Karl-Hermann Buchner

Klaus Andersson

Bernd Döbling

Uwe Blümling

The present invention relates to a process for producing shaped articles composed of refractory metals.

Process for producing shaped refractory metal bodies

Refractory metal products, such as tantalum, can be rejuvenated after metal consumption in selected zones by filling the zones with powder and simultaneously applying focused radiant energy to the powder.

Rejuvenation of refractory metal products

The invention relates to a thin film capacitor containing (a) a substrate, (b) a first polymeric film comprising an electrically conductive polymer located on the substrate, (c) a pentoxide layer selected from the group consisting of tantalum pentoxide, or niobium pentoxide, and mixtures thereof, (d) a second polymeric film comprising an electrically conductive polymer located on the pentoxide layer.

Thin film capacitor using conductive polymers

The invention relates to a thin film capacitor containing (a) a substrate, (b) a first polymeric film containing an electrically conductive polymer located on the substrate, (c) a pentoxide layer selected from the group consisting of tantalum pentoxide, or niobium pentoxide, and mixtures thereof, (d) a second polymeric film containing an electrically conductive polymer located on the pentoxide layer.

A method of making sheet bar and other precursors of formed products to be made by extensive working. The method includes providing a powder metal, preferably under 100 PPM oxygen content of non-spherical particles, compacting the powder into a coherent precursor form of at least 100 pounds, whereby a precursor is provided enabling extended fabrication to a finished product form. The finished product is resistant to breakup in fabrication due to oxide inclusion effect and produces a low oxygen end product. The method can process multiple species of metals that include at least one higher melting metal and one lower melting metal to produce an alloy or micro-composite of the metals as worked, where one metal is preferably a refractory metal (Ta, Nb, W, Wo, Zr, Hf, V and Re). The process is controlled to cause powder of the higher melting metal to be extended into a fibrous form.

Low oxygen refractory metal powder for powder metallurgy

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Jena, Germany

Henning Uhlenhut