TWI456599B - 軟磁粉末 - Google Patents

軟磁粉末 Download PDF

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Publication number
TWI456599B
TWI456599B TW096146534A TW96146534A TWI456599B TW I456599 B TWI456599 B TW I456599B TW 096146534 A TW096146534 A TW 096146534A TW 96146534 A TW96146534 A TW 96146534A TW I456599 B TWI456599 B TW I456599B
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TW
Taiwan
Prior art keywords
iron
electrically insulating
based powder
powder particles
powder
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TW096146534A
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English (en)
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TW200832455A (en
Inventor
Zhou Ye
Bjoern Skaarman
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Hoganas Ab Publ
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    • 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
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/16—Metallic particles coated with a non-metal
    • 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
    • H01F1/20—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 in the form of particles, e.g. powder
    • 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
    • H01F1/20—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 in the form of particles, e.g. powder
    • H01F1/22—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 in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/24—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 in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
    • 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
    • H01F1/33—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 mixtures of metallic and non-metallic particles; metallic particles having oxide skin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2202/00—Physical properties
    • C22C2202/02—Magnetic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Soft Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)

Claims (12)

  1. 一種由電絕緣鐵基粉末微粒組成之鐵粉末，其具有一小於100μm之粒度，其中該鐵基粉末具有小於0.1重量%的氧含量，該等電絕緣鐵基粉末微粒具有至多0.8%之總氧含量Otot 及比該等鐵基粉末微粒高至少0.04重量%的總磷含量，使得該等電絕緣鐵基粉末微粒之該總氧含量與該等電絕緣鐵基粉末微粒之該總磷含量與該等鐵基粉末微粒的該總磷含量之間的差△P之商係在2與6之間，且其中表達為△P/(Otot *D50 )之該等電絕緣鐵基粉末微粒之該總氧含量，及該等電絕緣鐵基粉末微粒之該總磷含量與該等鐵基粉末微粒之該總磷含量之間的該差△P，與平均粒度D50 之間的關係是在4.5l/mm與50l/mm之間。
  2. 如請求項1之鐵粉末，其中D90 低於75μm而D50 是在10μm與50μm之間。
  3. 如請求項1或2之鐵粉末，其中Ptot 等於或高於0.05%。
  4. 一種藉由鐵粉末之壓實模製所獲得用於在2kHz與100kHz之間的頻率下操作之粉末磁芯，該粉末磁芯之微粒係小於100μm且該等微粒具備電絕緣無機塗層，其中該鐵基粉末具有小於0.1重量%的氧含量，該等電絕緣鐵基粉末微粒具有至多0.8%之總氧含量Otot 及比該等鐵基粉末微粒高至少0.04重量%的總磷含量，使得該等電絕緣鐵基粉末微粒之該總氧含量與該等電絕緣鐵基粉末微粒之該總磷含量與該等鐵基粉末微粒的該總磷含量之間的差△P之商係在2與6之間，且其中表達為△P/(Otot *D50 )之 該等電絕緣鐵基粉末微粒之該總氧含量，及該等電絕緣鐵基粉末微粒之該總磷含量與該等鐵基粉末微粒之該總磷含量之間的該差△P，與平均粒度D50 之間的關係是在4.5l/mm與50l/mm之間，且該磁心具有：高於1000μΩm之比電阻ρ，及高於1.5(T)之飽和磁通量密度B。
  5. 如請求項4之粉末磁芯，其係用於在5kHz與100kHz之間的頻率下操作，具有高於2000μΩm之比電阻ρ，及高於1.7(T)之飽和磁通量密度B。
  6. 如請求項4之粉末磁芯，其係用於在5kHz與100kHz之間的頻率下操作，具有高於3000μΩm之比電阻ρ，及高於1.9(T)之飽和磁通量密度B。
  7. 如請求項4之粉末磁芯，其中該等電絕緣微粒具有75μm或小於75μm之D90 及在10μm與50μm之間的D50 。
  8. 如請求項4或7之粉末磁芯，其中該電絕緣塗層包含磷。
  9. 如請求項4或7之粉末磁芯，其在0.1T及10kHz下具有至多30W/kg的磁芯損耗。
  10. 一種製備一鐵芯之方法，其包含步驟：將如請求項1至3中任一項之絕緣粉末與小於1重量%之量的潤滑劑混合；將所得混合物填入一模中；壓實該混合物，使所得坯自該模脫模且加熱該生坯。
  11. 如請求項10之方法，其中該壓實係在環境溫度下執行。
  12. 一種製造如請求項1之鐵粉末之方法，其包含以下步驟： a)以溶解於溶劑中之磷酸處理鐵基粉末至少一次；及b)使所得經塗佈之粉末乾燥。
TW096146534A 2006-12-07 2007-12-06 軟磁粉末 TWI456599B (zh)

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Application Number Priority Date Filing Date Title
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TWI456599B true TWI456599B (zh) 2014-10-11

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US (1) US8187394B2 (zh)
EP (1) EP2147445B1 (zh)
JP (2) JP5896590B2 (zh)
KR (1) KR101477582B1 (zh)
CN (1) CN101681709B (zh)
BR (1) BRPI0719925B1 (zh)
CA (1) CA2670732C (zh)
ES (1) ES2638431T3 (zh)
MX (1) MX2009006098A (zh)
PL (1) PL2147445T3 (zh)
RU (1) RU2422931C2 (zh)
TW (1) TWI456599B (zh)
WO (1) WO2008069749A2 (zh)

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JP2010511791A (ja) 2010-04-15
EP2147445A2 (en) 2010-01-27
RU2009125920A (ru) 2011-01-20
EP2147445A4 (en) 2011-09-07
CN101681709B (zh) 2013-04-10
TW200832455A (en) 2008-08-01
CA2670732C (en) 2018-06-12
BRPI0719925B1 (pt) 2019-05-28
KR101477582B1 (ko) 2015-01-02
KR20090086637A (ko) 2009-08-13
JP2015053499A (ja) 2015-03-19
WO2008069749A2 (en) 2008-06-12
BRPI0719925A2 (pt) 2014-03-04
ES2638431T3 (es) 2017-10-20
CN101681709A (zh) 2010-03-24
WO2008069749A3 (en) 2010-01-21
RU2422931C2 (ru) 2011-06-27
US8187394B2 (en) 2012-05-29
JP5896590B2 (ja) 2016-03-30
PL2147445T3 (pl) 2017-10-31
US20100038580A1 (en) 2010-02-18
EP2147445B1 (en) 2017-05-31
MX2009006098A (es) 2009-06-24
CA2670732A1 (en) 2008-06-12

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