Iron nitride permanent magnet and technique for forming iron nitride permanent magnet

Wang, Jian-Ping; Jiang, Yanfeng

Advanced Search OptionsAdvanced Search queries use a traditional Term Search. For more info, see our FAQ.

All Fields:

Patent Title:

Abstract:

Assignee:

Inventor(s):

Patent Number:

Patent Classification (CPC):

All Classifications
A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
B30 - presses
B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
B65 - conveying
B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
B99 - subject matter not otherwise provided for in this section
C - chemistry
C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
C04 - cements
C05 - fertilisers
C06 - explosives
C07 - organic chemistry
C08 - organic macromolecular compounds
C09 - dyes
C10 - petroleum, gas or coke industries
C11 - animal or vegetable oils, fats, fatty substances or waxes
C12 - biochemistry
C13 - sugar industry
C14 - skins
C21 - metallurgy of iron
C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
C40 - combinatorial technology
C99 - subject matter not otherwise provided for in this section
D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
D99 - subject matter not otherwise provided for in this section
E - fixed constructions
E01 - construction of roads, railways, or bridges
E02 - hydraulic engineering
E03 - water supply
E04 - building
E05 - locks
E06 - doors, windows, shutters, or roller blinds in general
E21 - earth drilling
E99 - subject matter not otherwise provided for in this section
F - mechanical engineering
F01 - machines or engines in general
F02 - combustion engines
F03 - machines or engines for liquids
F04 - positive - displacement machines for liquids
F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
F15 - fluid-pressure actuators
F16 - engineering elements and units
F17 - storing or distributing gases or liquids
F21 - lighting
F22 - steam generation
F23 - combustion apparatus
F24 - heating
F25 - refrigeration or cooling
F26 - drying
F27 - furnaces
F28 - heat exchange in general
F41 - weapons
F42 - ammunition
F99 - subject matter not otherwise provided for in this section
G - physics
G01 - measuring
G02 - optics
G03 - photography
G04 - horology
G05 - controlling
G06 - computing
G07 - checking-devices
G08 - signalling
G09 - education
G10 - musical instruments
G11 - information storage
G12 - instrument details
G16 - information and communication technology [ict] specially adapted for specific application fields
G21 - nuclear physics
G99 - subject matter not otherwise provided for in this section
H - electricity
H01 - basic electric elements
H02 - generation
H03 - basic electronic circuitry
H04 - electric communication technique
H05 - electric techniques not otherwise provided for
H99 - subject matter not otherwise provided for in this section
Y - new / cross sectional technologies
Y02 - technologies or applications for mitigation or adaptation against climate change
Y04 - information or communication technologies having an impact on other technology areas
Y10 - technical subjects covered by former uspc

More Options ...

Title: Iron nitride permanent magnet and technique for forming iron nitride permanent magnet

Abstract

A bulk permanent magnetic material may include between about 5 volume percent and about 40 volume percent Fe16N2 phase domains, a plurality of nonmagnetic atoms or molecules forming domain wall pinning sites, and a balance soft magnetic material, wherein at least some of the soft magnetic material is magnetically coupled to the Fe16N2 phase domains via exchange spring coupling. In some examples, a bulk permanent magnetic material may be formed by implanting N+ ions in an iron workpiece using ion implantation to form an iron nitride workpiece, pre-annealing the iron nitride workpiece to attach the iron nitride workpiece to a substrate, and post-annealing the iron nitride workpiece to form Fe16N2 phase domains within the iron nitride workpiece.

Inventors:: Wang, Jian-Ping; Jiang, Yanfeng

Issue Date:: 2017-07-25

Research Org.:: Univ. of Minnesota, Minneapolis, MN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1532004

Patent Number(s):: 9715957

Application Number:: 14/766,101

Assignee:: Regents of the University of Minnesota (Minneapolis, MN)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B22 - CASTING B22D - CASTING OF METALS

B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER

Show more

B - PERFORMING OPERATIONS B22 - CASTING B22D - CASTING OF METALS
B22D11/001 - {of specific alloys}
B22D11/0622 - {formed by two casting wheels}

B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B22F7/08 - with one or more parts not made from powder {

C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
C22C2202/02 - Magnetic
C22C29/16 - based on nitrides {
C22C38/001 - {containing N}

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL
C23C14/48 - Ion implantation
C23C8/26 - of ferrous surfaces
C23C8/80 - After-treatment

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
H01F1/055 - and magnetic transition metals, e.g. SmCo5
H01F1/0579 - {with exchange spin coupling between hard and soft nanophases, e.g. nanocomposite spring magnets}
H01F1/086 - {sintered}
H01F1/10 - non-metallic substances, e.g. ferrites {, e.g. [
H01F1/147 - Alloys characterised by their composition {
H01F1/34 - non-metallic substances, e.g. ferrites
H01F41/0253 - {for manufacturing permanent magnets}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T428/32 - Composite [nonstructural laminate] of inorganic material having metal-compound-containing layer and having defined magnetic layer

Show less

DOE Contract Number:: AR0000199

Resource Type:: Patent

Resource Relation:: Patent File Date: 2014-02-06

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE

Citation Formats


                    Wang, Jian-Ping, and Jiang, Yanfeng. Iron nitride permanent magnet and technique for forming iron nitride permanent magnet.  United States: N. p., 2017. 
        Web.

Copy to clipboard


                    Wang, Jian-Ping, & Jiang, Yanfeng. Iron nitride permanent magnet and technique for forming iron nitride permanent magnet.  United States.

Copy to clipboard


                    Wang, Jian-Ping, and Jiang, Yanfeng. Tue .  
        "Iron nitride permanent magnet and technique for forming iron nitride permanent magnet".  United States.  https://www.osti.gov/servlets/purl/1532004.

Copy to clipboard


                    
@article{osti_1532004,

  title        = {Iron nitride permanent magnet and technique for forming iron nitride permanent magnet},

  author       = {Wang, Jian-Ping and Jiang, Yanfeng},

  abstractNote = {A bulk permanent magnetic material may include between about 5 volume percent and about 40 volume percent Fe16N2 phase domains, a plurality of nonmagnetic atoms or molecules forming domain wall pinning sites, and a balance soft magnetic material, wherein at least some of the soft magnetic material is magnetically coupled to the Fe16N2 phase domains via exchange spring coupling. In some examples, a bulk permanent magnetic material may be formed by implanting N+ ions in an iron workpiece using ion implantation to form an iron nitride workpiece, pre-annealing the iron nitride workpiece to attach the iron nitride workpiece to a substrate, and post-annealing the iron nitride workpiece to form Fe16N2 phase domains within the iron nitride workpiece.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2017},

  month        = {7}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Magnetic recording medium containing particles with a core containing a Fe16N2 phase
patent, July 2007

Sasaki, Yuji; Kishimoto, Mikio; Usuki, Naoki
US Patent Document 7,238,439
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7238439

Anisotropic Rare Earth-iron Based Resin Bonded Magnet
patent-application, March 2011

Yamashita, Fumitoshi; Yamada, Osamu; Ohya, Shiho
US Patent Application 12/853601; 20110074531
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20110074531

Formation of Nanostructures Comprising Compositionally Modulated Ferromagnetic Layers by Pulsed ECD
patent-application, July 2008

Deligianni, Hariklia; Huang, Qiang; Romankiw, Lubomyr T.
US Patent Application 11/620480; 20080166584
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20080166584

Multiferroic Nanoscale Thin Film Materials, Method of its Facile Syntheses and Magnetoelectric Coupling at Room Temperature
patent-application, November 2010

Pirich, Ronald; Yang, Nah-Loh; Su, Kai
US Patent Application 12/777175; 20100288964
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20100288964

Waveband Electromagnetic Wave Absorber and Method for Manufacturing Same
patent-application, June 2013

Lee, Sang-Kwan; Lee, Sang-Bok; Kim, Ki Hyeon
US Patent Application 13/697043; 20130140076
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20130140076

Method for producing iron-nitride powders
patent, July 1994

Koyano, Tamotsu; Mizutani, Uichiro
US Patent Document 5,330,554
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5330554

Ferromagnetic Particles and Process for Producing the Same, Anisotropic Magnet and Bonded Magnet
patent-application, June 2016

Takahashi, Migaku; Ogawa, Tomoyuki; Ogata, Yasunobu
US Patent Application 15/059906; 20160189836
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20160189836

Magnetic powder, permanent magnet produced therefrom and process for producing them
patent, October 2000

Kitazawa, Atsunori; Ishibashi, Toshiyuki; Akioka, Koji
US Patent Document 6,139,765
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6139765

Magnetically soft, high saturation magnetization laminates of iron-cobalt-nitrogen and iron-nickel
patent, August 2004

Jiang, Hai; Chen, Yingjian; Dang, Xiaozhong
US Patent Document 6,778,358
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6778358

Thin Film Depositing Apparatus
patent-application, April 2012

Cheong, Woo-Seok
US Patent Application 13/182590; 20120090543
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20120090543

Iron Nitride Materials and Magnets Including Iron Nitride Materials
patent-application, May 2016

Wang, Jian-Ping; Jiang, Yanfeng
US Patent Application 14/900944; 20160141082
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20160141082

Iron nitride thin film and methods for production thereof
patent-application, August 2002

Takahashi, Tadashi; Takahashi, Naoyuki; Nakumura, Takato
US Patent Application 10/025681; 20020117102
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20020117102

Iron Nitride Magnetic Powder and Magnetic Recording Medium Comprising the Same
patent-application, February 2010

Inoue, Tetsutaro; Sasaki, Yuji
US Patent Application 12/534998; 20100035086
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20100035086

Production Method for Nanocomposite Magnet
patent-application, April 2010

Sskuma, Noritsugu; Shoji, Tetsuya
US Patent Application 12/513245; 20100104767
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20100104767

Object consolidation employing friction joining
patent, October 2002

White, Dawn
US Patent Document 6,457,629
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6457629

Method of improving magnetic devices by applying AC or pulsed current
patent, July 1991

Li, James C. M.; Huang, Der-Ray
US Patent Document 5,032,947
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5032947

Soft magnetic thin film comprising alternate layers of iron carbide with either iron, iron nitride or iron carbon-nitride
patent, November 1991

Hori, Tohru; Aoki, Masaki; Fujii, Kenichi
US Patent Document 5,068,147
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5068147

Magnetic Garnet Single Crystal Film Formation Substrate, Optical Element and Production Method of the Same
patent-application, June 2006

Uchida, Kiyoshi; Sakashita, Yukio; Ohido, Atsushi
US Patent Application 10/543655; 20060112873
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20060112873

Magnetic material and production method thereof
patent, November 2001

Nagatomi, Akira; Kanamaru, Fumikazu; Kikkawa, Shinichi
US Patent Document 6,319,485
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6319485

Iron Nitride Powder, Method of Manufacturing the Same, and Magnetic Recording Medium
patent-application, April 2009

Masaki, Kouichi
US Patent Application 12/240483; 20090087688
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20090087688

Transformation Enabled Nitride Magnets Absent Rare Earths and a Process of Making the Same
patent-application, October 2014

Mathiesen, David
US Patent Application 14/304102; 20140290434
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20140290434

Alkaline rechargeable battery and process for the production thereof
patent-application, December 2002

Taui, Atsushi; Kawakami, Soichiro
US Patent Application 10/093657; 20020197530
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20020197530

R-Fe-B magnet alloy, isotropic bonded magnet and method of producing same
patent, September 1995

Shimizu, Motoharu; Hasegawa, Motohisa
US Patent Document 5,449,417
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5449417

Magnetoresistance effect element, magnetic head and magnetic reproducing apparatus
patent-application, December 2002

Yoshikawa, Masatoshi; Sahashi, Masashi; Koi, Katsuhiko
US Patent Application 10/108472; 20020191354
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20020191354