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Title: Near net shape bulk laminated silicon iron electric steel for improved electrical resistance and low high frequency loss

Abstract

The invention involves producing discontinuous, flake-shaped particles of a soft magnetic material, coating the flake-shaped particles with an electrically insulating coating, and consolidating the coated flaked-shaped particles to form a soft magnetic bulk shape. The consolidated bulk shape can comprise a layer or a simple or complex 3D magnet part shape, which has a consolidated layered microstructure that includes laminated soft magnetic regions that are substantially encapsulated by an electrical insulating layer to increase the resistivity of soft magnetic material, especially when used in silicon iron magnet parts.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Iowa State Univ., Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1860055
Patent Number(s):
11170919
Application Number:
16/501,332
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
DOE Contract Number:  
EE0007794
Resource Type:
Patent
Resource Relation:
Patent File Date: 03/27/2019
Country of Publication:
United States
Language:
English

Citation Formats

Cui, Jun, Ouyang, Gaoyuang, Jensen, Brandt, Dennis, Kevin W., and Cui, Baozhi. Near net shape bulk laminated silicon iron electric steel for improved electrical resistance and low high frequency loss. United States: N. p., 2021. Web.
Cui, Jun, Ouyang, Gaoyuang, Jensen, Brandt, Dennis, Kevin W., & Cui, Baozhi. Near net shape bulk laminated silicon iron electric steel for improved electrical resistance and low high frequency loss. United States.
Cui, Jun, Ouyang, Gaoyuang, Jensen, Brandt, Dennis, Kevin W., and Cui, Baozhi. Tue . "Near net shape bulk laminated silicon iron electric steel for improved electrical resistance and low high frequency loss". United States. https://www.osti.gov/servlets/purl/1860055.
@article{osti_1860055,
title = {Near net shape bulk laminated silicon iron electric steel for improved electrical resistance and low high frequency loss},
author = {Cui, Jun and Ouyang, Gaoyuang and Jensen, Brandt and Dennis, Kevin W. and Cui, Baozhi},
abstractNote = {The invention involves producing discontinuous, flake-shaped particles of a soft magnetic material, coating the flake-shaped particles with an electrically insulating coating, and consolidating the coated flaked-shaped particles to form a soft magnetic bulk shape. The consolidated bulk shape can comprise a layer or a simple or complex 3D magnet part shape, which has a consolidated layered microstructure that includes laminated soft magnetic regions that are substantially encapsulated by an electrical insulating layer to increase the resistivity of soft magnetic material, especially when used in silicon iron magnet parts.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 09 00:00:00 EST 2021},
month = {Tue Nov 09 00:00:00 EST 2021}
}

Works referenced in this record:

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Recent developments of new soft magnetic materials
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Demagnetizing factors for rectangular ferromagnetic prisms
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Plurality of Flaky Magnetic Metal Particles, Pressed Powder Material, and Rotating Electric Machine
patent-application, September 2019


Fabrication of Fe-6.5wt%Si Ribbons by Melt Spinning Method on Large Scale
journal, January 2015


Review of Fe-6.5 wt%Si high silicon steel—A promising soft magnetic material for sub-kHz application
journal, July 2019


Magnetic properties and workability of 6.5% silicon steel sheet manufactured in continuous CVD siliconizing line
journal, May 1994