Iron nitride powder with anisotropic shape

Wang, Jian-Ping; Jiang, Yanfeng

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Title: 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 α″-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 α″-Fe16N2 phase domain, are described. Milling apparatuses utilizing elongated bars, an electric field, and a magnetic field also are disclosed.

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

Issue Date:: 2022-11-29

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

Sponsoring Org.:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

OSTI Identifier:: 1986860

Patent Number(s):: 11511344

Application Number:: 16/737,156

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

DOE Contract Number:: AR0000199

Resource Type:: Patent

Resource Relation:: Patent File Date: 01/08/2020

Country of Publication:: United States

Language:: English

Citation Formats


                    Wang, Jian-Ping, and Jiang, Yanfeng. Iron nitride powder with anisotropic shape.  United States: N. p., 2022. 
        Web.

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                    Wang, Jian-Ping, & Jiang, Yanfeng. Iron nitride powder with anisotropic shape.  United States.

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                    Wang, Jian-Ping, and Jiang, Yanfeng. Tue .  
        "Iron nitride powder with anisotropic shape".  United States.  https://www.osti.gov/servlets/purl/1986860.

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@article{osti_1986860,

  title        = {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 α″-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 α″-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         = {2022},

  month        = {11}

}

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Works referenced in this record:

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

Wang, Jian-Ping; Jiang, Yanfeng
US Patent Application 14/900944; 20160141082
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Iron nitride magnetic powder and method of producing the powder
patent-application, September 2005

Masada, Kenji; Amino, Takafumi; Nagatomi, Akira
US Patent Application 11/064939; 20050208320
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Method for producing iron-nitride powders
patent, July 1994

Koyano, Tamotsu; Mizutani, Uichiro
US Patent Document 5,330,554
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Magnetic Material Including a"-Fe16(NxZ1-x)2 or a Mixture of a"-Fe6Z2 and a"-Fe16N2, Where Z Includes at Least One of C, B, or O
patent-application, February 2016

Wang, Jian-Ping; Jiang, Yanfeng; Mehedi, Md Aminul
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Method to Synthesize Bulk Iron Nitride
patent-application, July 2016

Monson, Todd; Lavernia, Enrique J.; Zheng, Baolong
US Patent Application 15/002220; 20160207769
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Method for Producing Magnetic Particles, Magnetic Particles, and Magnetic Body
patent-application, December 2015

Nakamura, Keitaroh; Kinoshita, Akihiro; Uemura, Naohito
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Applied Magnetic Field Synthesis and Processing of Iron Nitride Magnetic Materials
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Wang, Jian-Ping; Jiang, YanFeng
US Patent Application 15/546407; 20180025841
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Iron Nitride Magnetic Powder and Magnetic Recording Medium Comprising the Same
patent-application, February 2010

Inoue, Tetsutaro; Sasaki, Yuji
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Iron Nitride Permanent Magnet and Technique for Forming Iron Nitride Permanent Magnet
patent-application, December 2015

Wang, Jian-Ping; Jiang, Yanfeng
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Ferromagnetic Particles and Process for Producing the Same, and Anisotropic Magnet, Bonded Magnet and Compacted Magnet
patent-application, January 2014

Takahashi, Migaku; Ogawa, Tomoyuki; Ogata, Yasunobu
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Transformation Enabled Nitride Magnets Absent Rare Earths and a Process of Making the Same
patent-application, October 2014

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US Patent Application 14/304102; 20140290434
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Multilayer Iron Nitride Hard Magnetic Materials
patent-application, August 2017

Wang, Jian-Ping; Jiang, Yanfeng
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Method of making iron nitride powder with anisotropic shape

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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.more » « less
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Similar Records

Title: Iron nitride powder with anisotropic shape

Abstract

Citation Formats

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

Iron nitride magnetic powder and method of producing the powder patent-application, September 2005

Method for producing iron-nitride powders patent, July 1994

Magnetic Material Including a"-Fe16(NxZ1-x)2 or a Mixture of a"-Fe6Z2 and a"-Fe16N2, Where Z Includes at Least One of C, B, or O patent-application, February 2016

Method to Synthesize Bulk Iron Nitride patent-application, July 2016

Method for Producing Magnetic Particles, Magnetic Particles, and Magnetic Body patent-application, December 2015

Applied Magnetic Field Synthesis and Processing of Iron Nitride Magnetic Materials patent-application, January 2018

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

Iron Nitride Permanent Magnet and Technique for Forming Iron Nitride Permanent Magnet patent-application, December 2015

Ferromagnetic Particles and Process for Producing the Same, and Anisotropic Magnet, Bonded Magnet and Compacted Magnet patent-application, January 2014

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

Multilayer Iron Nitride Hard Magnetic Materials patent-application, August 2017

Challenge to the Synthesis of α''-Fe 16 N 2 Compound Nanoparticle with High Saturation Magnetization for Rare Earth Free New Permanent Magnetic Material journal, July 2013

Influence of milling temperature and atmosphere on the synthesis of iron nitrides by ball milling journal, February 1996

Process for Producing Ferromagnetic Particles, Anisotropic Magnet, Bonded Magnet and Compcated Magnet patent-application, March 2014

Morphology and magnetic properties of α”-Fe16N2 nanoparticles synthesized from iron hydroxide and iron oxides journal, January 2017

Field-ball milling induced anisotropy in magnetic particles journal, December 2004

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

Iron nitride magnetic powder and method of producing the powder
patent-application, September 2005

Method for producing iron-nitride powders
patent, July 1994

Magnetic Material Including a"-Fe16(NxZ1-x)2 or a Mixture of a"-Fe6Z2 and a"-Fe16N2, Where Z Includes at Least One of C, B, or O
patent-application, February 2016

Method to Synthesize Bulk Iron Nitride
patent-application, July 2016

Method for Producing Magnetic Particles, Magnetic Particles, and Magnetic Body
patent-application, December 2015

Applied Magnetic Field Synthesis and Processing of Iron Nitride Magnetic Materials
patent-application, January 2018

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

Iron Nitride Permanent Magnet and Technique for Forming Iron Nitride Permanent Magnet
patent-application, December 2015

Ferromagnetic Particles and Process for Producing the Same, and Anisotropic Magnet, Bonded Magnet and Compacted Magnet
patent-application, January 2014

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

Multilayer Iron Nitride Hard Magnetic Materials
patent-application, August 2017

Challenge to the Synthesis of α''-Fe ₁₆ N ₂ Compound Nanoparticle with High Saturation Magnetization for Rare Earth Free New Permanent Magnetic Material
journal, July 2013

Influence of milling temperature and atmosphere on the synthesis of iron nitrides by ball milling
journal, February 1996

Process for Producing Ferromagnetic Particles, Anisotropic Magnet, Bonded Magnet and Compcated Magnet
patent-application, March 2014

Morphology and magnetic properties of α”-Fe₁₆N₂ nanoparticles synthesized from iron hydroxide and iron oxides
journal, January 2017

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journal, December 2004