ITMI20041679A1 - Magnete permanente senza facce polari ad multipli e procedimento di fabbricazione - Google Patents

Magnete permanente senza facce polari ad multipli e procedimento di fabbricazione

Info

Publication number
ITMI20041679A1
ITMI20041679A1 IT001679A ITMI20041679A ITMI20041679A1 IT MI20041679 A1 ITMI20041679 A1 IT MI20041679A1 IT 001679 A IT001679 A IT 001679A IT MI20041679 A ITMI20041679 A IT MI20041679A IT MI20041679 A1 ITMI20041679 A1 IT MI20041679A1
Authority
IT
Italy
Prior art keywords
permanent magnet
manufacturing procedure
polar faces
multiple polar
faces
Prior art date
Application number
IT001679A
Other languages
English (en)
Italian (it)
Inventor
Bruce Campbell Amm
Kathleen Melaine Amm
Bulent Askel
Xianrui Huang
Evangelos Trifon Laskaris
Jr Johannes Martinus Palmo
Paul Shadforth Thompson
Oort Johannes Martinus Van
Original Assignee
Gen Electric
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gen Electric filed Critical Gen Electric
Publication of ITMI20041679A1 publication Critical patent/ITMI20041679A1/it

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/128—Encapsulating, encasing or sealing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/383—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0273—Imparting anisotropy
    • H01F41/028—Radial anisotropy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0273—Magnetic circuits with PM for magnetic field generation
    • H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
IT001679A 2003-09-29 2004-08-31 Magnete permanente senza facce polari ad multipli e procedimento di fabbricazione ITMI20041679A1 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/672,658 US7423431B2 (en) 2003-09-29 2003-09-29 Multiple ring polefaceless permanent magnet and method of making

Publications (1)

Publication Number Publication Date
ITMI20041679A1 true ITMI20041679A1 (it) 2004-11-30

Family

ID=34376435

Family Applications (1)

Application Number Title Priority Date Filing Date
IT001679A ITMI20041679A1 (it) 2003-09-29 2004-08-31 Magnete permanente senza facce polari ad multipli e procedimento di fabbricazione

Country Status (4)

Country Link
US (1) US7423431B2 (enExample)
JP (1) JP4758629B2 (enExample)
CN (1) CN100444290C (enExample)
IT (1) ITMI20041679A1 (enExample)

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US8395468B2 (en) * 2006-01-04 2013-03-12 University Of Utah Research Foundation High field strength magentic field generation system and associated methods
US7710081B2 (en) 2006-10-27 2010-05-04 Direct Drive Systems, Inc. Electromechanical energy conversion systems
CN101388271A (zh) * 2007-09-14 2009-03-18 Ge医疗系统环球技术有限公司 磁体系统和mri设备
EP2511724B1 (en) * 2008-06-24 2019-03-13 Alberta Health Services Method of defining a magnetic field for an imaging volume
US8183734B2 (en) 2008-07-28 2012-05-22 Direct Drive Systems, Inc. Hybrid winding configuration of an electric machine
EP2453250B1 (en) * 2009-06-30 2019-06-12 Aspect Imaging Ltd. A cage in an magnetic resonance device with a fastening/attenuating system
DE102009031665B4 (de) * 2009-07-05 2016-02-25 Msm Krystall Gbr (Vertretungsberechtigte Gesellschafter: Dr. Rainer Schneider, 12165 Berlin; Arno Mecklenburg, 10999 Berlin) Elektrodynamischer Aktor
US10224742B2 (en) 2015-01-18 2019-03-05 Powerpath Technologies Incorporated High efficiency uninterruptible power supply with near loss-less ultrafast electromechanical switching
JP2019508879A (ja) 2016-01-25 2019-03-28 ユーティー−バッテル・エルエルシー 選択的な表面改質を有するネオジム−鉄−ボロン磁石およびその製造方法
US11988730B2 (en) 2016-08-08 2024-05-21 Aspect Imaging Ltd. Device, system and method for obtaining a magnetic measurement with permanent magnets
US11287497B2 (en) 2016-08-08 2022-03-29 Aspect Imaging Ltd. Device, system and method for obtaining a magnetic measurement with permanent magnets
US10224135B2 (en) 2016-08-08 2019-03-05 Aspect Imaging Ltd. Device, system and method for obtaining a magnetic measurement with permanent magnets
US10627464B2 (en) 2016-11-22 2020-04-21 Hyperfine Research, Inc. Low-field magnetic resonance imaging methods and apparatus
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US10847294B2 (en) 2017-07-10 2020-11-24 Aspect Imaging Ltd. System for generating a magnetic field
KR20210013563A (ko) * 2018-05-21 2021-02-04 하이퍼파인 리서치, 인크. 자기 공명 이미징 시스템을 위한 b0 자석 방법들 및 장치들
KR20210096188A (ko) 2018-11-29 2021-08-04 엡시타우 엘티디. 혼합 위상 자석 고리들을 갖춘 경량 비대칭 자석 배열체들
KR20210096189A (ko) 2018-11-29 2021-08-04 엡시타우 엘티디. 세타 자석 고리들을 갖춘 경량 비대칭 자석 배열체들
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Also Published As

Publication number Publication date
CN100444290C (zh) 2008-12-17
CN1602805A (zh) 2005-04-06
US7423431B2 (en) 2008-09-09
JP4758629B2 (ja) 2011-08-31
US20050068138A1 (en) 2005-03-31
JP2005109487A (ja) 2005-04-21

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