Method of making iron nitride powder with anisotropic shape
Abstract
Techniques are disclosed for milling an iron-containing raw material in the presence of a nitrogen source to generate anisotropically shaped particles that include iron nitride and have an aspect ratio of at least 1.4. Techniques for nitridizing an anisotropic particle including iron, and annealing an anisotropic particle including iron nitride to form at least one a″-Fe16N2 phase domain within the anisotropic particle including iron nitride also are disclosed. In addition, techniques for aligning and joining anisotropic particles to form a bulk material including iron nitride, such as a bulk permanent magnet including at least one a″-Fe16N2 phase domain, are described. Milling apparatuses utilizing elongated bars, an electric field, and a magnetic field also are disclosed.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of Minnesota, Minneapolis, MN (United States)
- Sponsoring Org.:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E)
- OSTI Identifier:
- 1632557
- Patent Number(s):
- 10562103
- Application Number:
- 15/546,359
- Assignee:
- Regents of the University of Minnesota (Minneapolis, MN)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
- DOE Contract Number:
- AR0000199
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 01/22/2016
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Wang, Jian-Ping, and Jiang, YanFeng. Method of making iron nitride powder with anisotropic shape. United States: N. p., 2020.
Web.
Wang, Jian-Ping, & Jiang, YanFeng. Method of making iron nitride powder with anisotropic shape. United States.
Wang, Jian-Ping, and Jiang, YanFeng. Tue .
"Method of making iron nitride powder with anisotropic shape". United States. https://www.osti.gov/servlets/purl/1632557.
@article{osti_1632557,
title = {Method of making iron nitride powder with anisotropic shape},
author = {Wang, Jian-Ping and Jiang, YanFeng},
abstractNote = {Techniques are disclosed for milling an iron-containing raw material in the presence of a nitrogen source to generate anisotropically shaped particles that include iron nitride and have an aspect ratio of at least 1.4. Techniques for nitridizing an anisotropic particle including iron, and annealing an anisotropic particle including iron nitride to form at least one a″-Fe16N2 phase domain within the anisotropic particle including iron nitride also are disclosed. In addition, techniques for aligning and joining anisotropic particles to form a bulk material including iron nitride, such as a bulk permanent magnet including at least one a″-Fe16N2 phase domain, are described. Milling apparatuses utilizing elongated bars, an electric field, and a magnetic field also are disclosed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {2}
}