H.c. Starck Gmbh

H. C. Starck, Gmbh & Co Kg

Bernd Mende

Gerhard Gille

Ines Lamprecht

Armin Olbrich

Benno Gries

Dirk Naumann

Ulrich Krynitz

Peter Aulich

Knut Eikemeyer

Matthias H&ouml;hne

J&ouml;rg M&uuml;nchow

Matthias Hohne

The invention relates to novel pre-alloyed metal powders a method for production and use thereof.

Metal powder

A process is described for the preparation of powder mixtures or composite powders from at least one first type of powder from the group consisting of high-melting metals, hard materials and ceramic powders and at least one second type of powder from the group consisting of binder metals, binder-metal mixed crystals and binder-metal alloys, where the second type of powder is formed from precursor compounds in the form of water-soluble salts in an aqueous suspension of the first type of powder by precipitation as oxalate, removal of the mother liquor and reduction to the metal.

Powder mixture or composite powder, a method for production thereof and the use thereof in composite materials

A process is described for the production of metal powder and alloy powders containing at least one of the metals iron, copper, tin, cobalt or nickel, by mixing aqueous metal salt solutions with an aqueous carboxylic acid solution, separating the precipitation product from the mother liquor and reducing the precipitation product to the metal.

Pre-alloyed powder

Ultrafine cobalt metal powder consisting of fine crystallites, wherein the crystallites, wherein the crystallitex exhibit a rice-grain shaped to spherical habit and more than 90% of the crystallites have a diameter in the range of from 0.5 to 2 &mgr;m, a process for the production of the cobalt metal powder via an intermediate stage of cobalt carbonate production, and processes and products re certain uses of the cobalt metal powder and the cobalt carbonate and an intermediate oxide so produced.

Ultrafine cobalt metal powder, process for the production thereof and use of the cobalt metal powder and of cobalt carbonate

Cobalt/cobalt oxide powder having the composition Co.sub.x (CoO).sub.1-x, where x is from 0.02 to 5, and a process for its production and use in nickel hydroxide electrodes for secondary batteries to enhance capacity.

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Braunschweig, Germany

Bernd Mende