Brian J Zande

US Patent:

20110059005, Mar 10, 2011

Filed:

May 5, 2008

Appl. No.:

12/151239

Inventors:

Suryanarayan G. Sankar - Pittsburgh PA, US
Satoru Simizu - Pittsburgh PA, US
Brian J. Zande - Pittsburgh PA, US
Richard T. Obermyer - Delmont PA, US

International Classification:

C01B 21/06

US Classification:

423409

Abstract:

A method of making iron nitride powder is provided. The method comprises the steps of: a) providing an iron-based starting material; b) reducing the starting material by heating the starting material in a fluidized bed reactor in the presence of a reducing agent; c) nitriding the material obtained from step (b) by contacting the material with a nitrogen source. Also provided is the iron nitride powder made by the above method.

US Patent:

20160379741, Dec 29, 2016

Filed:

Jun 27, 2016

Appl. No.:

15/194194

Inventors:

- Pittsburgh PA, US
Michael P. Brady - Oak Ridge TN, US
Craig A. Bridges - Knoxville TN, US
Edgar Lara-Curzio - Lenoir City TN, US
Ji Won Moon - Oak Ridge TN, US
Orlando Rios - Knoxville TN, US
Suryanarayan G. Sankar - Pittsburgh PA, US
Brian Zande - Pittsburgh PA, US

Assignee:

Advanced Materials Corporation - Pittsburgh PA

International Classification:

H01F 1/11
H01F 1/06
C12P 3/00
H01F 1/053

Abstract:

The disclosure describes a method of producing iron nitride magnets using Zn-doped iron oxide precursors. The iron oxide precursors are reduced and nitrided to produce a powder containing iron nitride in the FeNphase. The inclusion of Zn in the iron oxide precursor enhances the magnetic properties of the iron nitride powder.