Phosphorus-containing iron powders

US6180235A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernd Leutner · Bischofswerda, DE
• Gabriele Friedrich · Ludwigshafen, DE
• Reinhold Schlegel · Haßloch, DE

Key dates

• Filing date: Feb 12, 1998
• Grant date: Jan 30, 2001
• Expiry date: Feb 12, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Phosphorus-containing iron powder is prepared by mixing carbonyl iron powder or whiskers with elemental phosphorus, heating the mixture and comminuting the product obtained to give a powder. The powder of the present invention has a particularly low content of extraneous elements.