Preservation of strain in iron nitride magnet
Abstract
A permanent magnet may include a Fe16N2 phase in a strained state. In some examples, strain may be preserved within the permanent magnet by a technique that includes etching an iron nitride-containing workpiece including Fe16N2 to introduce texture, straining the workpiece, and annealing the workpiece. In some examples, strain may be preserved within the permanent magnet by a technique that includes applying at a first temperature a layer of material to an iron nitride-containing workpiece including Fe16N2, and bringing the layer of material and the iron nitride-containing workpiece to a second temperature, where the material has a different coefficient of thermal expansion than the iron nitride-containing workpiece. A permanent magnet including an Fe16N2 phase with preserved strain also is 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:
- 1987125
- Patent Number(s):
- 11581113
- Application Number:
- 17/543,863
- Assignee:
- Regents of the University of Minnesota (Minneapolis, MN)
- DOE Contract Number:
- AR0000199
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 12/07/2021
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Wang, Jian-Ping, and Jiang, Yanfeng. Preservation of strain in iron nitride magnet. United States: N. p., 2023.
Web.
Wang, Jian-Ping, & Jiang, Yanfeng. Preservation of strain in iron nitride magnet. United States.
Wang, Jian-Ping, and Jiang, Yanfeng. Tue .
"Preservation of strain in iron nitride magnet". United States. https://www.osti.gov/servlets/purl/1987125.
@article{osti_1987125,
title = {Preservation of strain in iron nitride magnet},
author = {Wang, Jian-Ping and Jiang, Yanfeng},
abstractNote = {A permanent magnet may include a Fe16N2 phase in a strained state. In some examples, strain may be preserved within the permanent magnet by a technique that includes etching an iron nitride-containing workpiece including Fe16N2 to introduce texture, straining the workpiece, and annealing the workpiece. In some examples, strain may be preserved within the permanent magnet by a technique that includes applying at a first temperature a layer of material to an iron nitride-containing workpiece including Fe16N2, and bringing the layer of material and the iron nitride-containing workpiece to a second temperature, where the material has a different coefficient of thermal expansion than the iron nitride-containing workpiece. A permanent magnet including an Fe16N2 phase with preserved strain also is disclosed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2023},
month = {2}
}
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