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

US6887296B2 · kind B2 · utility

Assignee

• H.C. STARCK INC. · US

Inventors

• Bernd Mende · Bad Harzburg, DE
• Gerhard Gille · Goslar, DE
• Ines Lamprecht · Seesen, DE

Key dates

• Filing date: Dec 11, 2000
• Grant date: May 3, 2005
• Expiry date: Dec 23, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22F2999/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

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.