Patent · US Expired

Silicon-containing iron powders

US5993569A · kind A · utility

6Cited by

2References

7Claims

0Family size

Assignee

BASF SE

Inventors

Joachim Simon · Grevenbroich, DE
Reinhold Schlegel · Haßloch, DE
Bernd Leutner · Bischofswerda, DE

Key dates

Filing date	Apr 15, 1998
Grant date	Nov 30, 1999
Priority date	—
Expiry date	Apr 15, 2018

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB22F9/305
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a method for preparing silicon-containing iron powders by thermal decomposition of a gas mixture comprising iron pentacarbonyl and, as a volatile silicon compound, a silane or a halogen-free organosilane in which the gas mixture flows through a heated reaction chamber and heating of the gas mixture is effected by thermal conduction. The silicon-containing iron powders obtained are distinguished by a particularly low impurity element content. The silicon-containing iron powders can be used for the fabrication of cores, magnets and radar-absorbing materials.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.