Fine-particle metal powders

US5407458A · kind A · utility

Assignee

• H. C. Starck GmbH & Co. KG · DE

Inventors

• Theo Konig · Laufenburg (Baden), DE
• Dietmar Fister · Waldbröl, DE

Key dates

• Filing date: Apr 26, 1993
• Grant date: Apr 18, 1995
• Expiry date: Apr 26, 2013

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22F2998/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

This invention relates to fine-particle powders of the metals B, Al, Si, Ti, Zr, Hf, V, Nb, Ta and/or Cr which have a defined particle size of 1.0 nm to less than 3 .mu.m. Less than 1% of the individual particles of the powder deviate by more than 40% from the average particle size, and no individual particle of the powder deviates by more than 60% from the average particle size.