Solid state grain alignment of permanent magnets in near-final shape
Abstract
Magnet microstructure manipulation in the solid state by controlled application of a sufficient stress in a direction during high temperature annealing in a single-phase region of heat-treatable magnet alloys, e.g., alnico-type magnets is followed by magnetic annealing and draw annealing to improve coercivity and saturation magnetization properties. The solid-state process can be termed highly controlled abnormal grain growth (hereafter AGG) and will make aligned sintered anisotropic magnets that meet or exceed the magnetic properties of cast versions of the same alloy types.
- Inventors:
- Issue Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1925143
- Patent Number(s):
- 11453937
- Application Number:
- 16/974,116
- Assignee:
- Iowa State University Research Foundation, Inc. (Ames, IA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
C - CHEMISTRY C22 - METALLURGY C22F - CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- DOE Contract Number:
- AC02-07CH11358
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 10/05/2020
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Anderson, Iver E., Hamilton White, Emma Marie, Kramer, Matthew J., Kassen, Aaron G., and Dennis, Kevin W. Solid state grain alignment of permanent magnets in near-final shape. United States: N. p., 2022.
Web.
Anderson, Iver E., Hamilton White, Emma Marie, Kramer, Matthew J., Kassen, Aaron G., & Dennis, Kevin W. Solid state grain alignment of permanent magnets in near-final shape. United States.
Anderson, Iver E., Hamilton White, Emma Marie, Kramer, Matthew J., Kassen, Aaron G., and Dennis, Kevin W. Tue .
"Solid state grain alignment of permanent magnets in near-final shape". United States. https://www.osti.gov/servlets/purl/1925143.
@article{osti_1925143,
title = {Solid state grain alignment of permanent magnets in near-final shape},
author = {Anderson, Iver E. and Hamilton White, Emma Marie and Kramer, Matthew J. and Kassen, Aaron G. and Dennis, Kevin W.},
abstractNote = {Magnet microstructure manipulation in the solid state by controlled application of a sufficient stress in a direction during high temperature annealing in a single-phase region of heat-treatable magnet alloys, e.g., alnico-type magnets is followed by magnetic annealing and draw annealing to improve coercivity and saturation magnetization properties. The solid-state process can be termed highly controlled abnormal grain growth (hereafter AGG) and will make aligned sintered anisotropic magnets that meet or exceed the magnetic properties of cast versions of the same alloy types.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 27 00:00:00 EDT 2022},
month = {Tue Sep 27 00:00:00 EDT 2022}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Techniques to Achieve Texture in Permanent Magnet Alloy Systems
journal, March 1965
- Makino, Noboru; Kimura, Yasuo
- Journal of Applied Physics, Vol. 36, Issue 3
Preparation of Sintered Permanent Alnico Magnets
patent, February 1969
- Heimke, Gunther
- US Patent Document 3,428,498
Method of making environmentally stable reactive alloy powders
patent, December 1994
- Anderson, Iver E.; Lograsso, Barbara K.; Terpstra, Robert L.
- US Patent Document 5,372,629
Gas atomization synthesis of refractory or intermetallic compounds and supersaturated solid solutions
patent, November 1994
- Anderson, Iver E.; Lograsso, Barbara K.; Ellis, Timothy W.
- US Patent Document 5,368,657
Atomizing nozzle and process
patent, June 1992
- Anderson, Iver E.; Figliola, Richard S.; Molnar, Holly M.
- US Patent Document 5,125,574
Apparatus for making environmentally stable reactive alloy powders
patent, December 1996
- Anderson, Iver E.; Lograsso, Barbara K.; Terpstra, Robert L.
- US Patent Document 5,589,199
Some relationships between crystal textures and magnetic properties of alnico 8
journal, June 1970
- Higuchi, A.; Miyamoto, T.
- IEEE Transactions on Magnetics, Vol. 6, Issue 2
Highly tuned gas atomization for controlled preparation of coarse powder. Hochleistungsgasverdüsung für die gezielte Präparation grober Pulver
journal, July 2010
- Anderson, I. E.; Byrd, D.; Meyer, J.
- Materialwissenschaft und Werkstofftechnik, Vol. 41, Issue 7, p. 504-512
Rare earth/iron/boron-based permanent magnet and method for the preparation thereof
patent, November 2001
- Ohashi, Ken; Nomura, Tadao
- US Patent Document 6,319,334
Environmentally stable reactive alloy powders and method of making same
patent, September 1998
- Anderson, Iver E.; Lograsso, Barbara K.; Terpstra, Robert L.
- US Patent Document 5,811,187
Process for manufacturing Alnico system permanent magnet
patent, May 1996
- Yang, Choong-Jin; Choi, Seung Dae; Lee, Woo Young
- US Patent Document 5,520,748
Method for inducing uniaxial magnetic anisotropy in an amorphous ferromagnetic alloy
patent, July 1977
- Berry, Brian S.; Pritchet, Walter C.
- US Patent Document 4,033,795
Monocrystalline Permanent Magnets and Method of Making Them
patent, April 1963
- Steinort, Eberhard
- US Patent Document 3,085,036
Hot pressed magnets formed from anisotropic powders
patent, October 1994
- Panchanathan, Viswanathan; Croat, John J.
- US Patent Document 5,352,301
Evolution of Fe–Co rich particles in Alnico 8 alloy thermomagnetically treated at 800°C
journal, September 2000
- Chu, W. G.; Fei, W. D.; Li, X. H.
- Materials Science and Technology, Vol. 16, Issue 9