JP2021021096A - 複合磁性粉及びこれを用いた圧粉磁心、並びに、複合磁性粉の製造方法 - Google Patents
複合磁性粉及びこれを用いた圧粉磁心、並びに、複合磁性粉の製造方法 Download PDFInfo
- Publication number
- JP2021021096A JP2021021096A JP2019136713A JP2019136713A JP2021021096A JP 2021021096 A JP2021021096 A JP 2021021096A JP 2019136713 A JP2019136713 A JP 2019136713A JP 2019136713 A JP2019136713 A JP 2019136713A JP 2021021096 A JP2021021096 A JP 2021021096A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic powder
- insulating layer
- composite magnetic
- powder
- liquid
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 239000006247 magnetic powder Substances 0.000 title claims abstract description 99
- 239000002131 composite material Substances 0.000 title claims abstract description 64
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000000843 powder Substances 0.000 title description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 42
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 31
- 229910052742 iron Inorganic materials 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 32
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 19
- 229910052710 silicon Inorganic materials 0.000 claims description 19
- 239000010703 silicon Substances 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 13
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 11
- 239000011800 void material Substances 0.000 description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910001004 magnetic alloy Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229910017082 Fe-Si Inorganic materials 0.000 description 1
- 229910017133 Fe—Si Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H01F1/14708—Fe-Ni based alloys
- H01F1/14733—Fe-Ni based alloys in the form of particles
- H01F1/14741—Fe-Ni based alloys in the form of particles pressed, sintered or bonded together
- H01F1/1475—Fe-Ni based alloys in the form of particles pressed, sintered or bonded 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/006—Coating of the granules without description of the process or the device by which the granules are obtained
-
- 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
- H01F3/00—Cores, Yokes, or armatures
- H01F3/08—Cores, Yokes, or armatures made from powder
-
- 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
- H01F41/026—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 protecting methods against environmental influences, e.g. oxygen, by surface treatment
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Soft Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
平均粒径が3μmであるFe粉を容器に投入し、Fe粉30gに対してエタノールを100ml加えることによって、エタノールからなる液体中にFe粉を分散させた。次に、容器をオイルバスに入れることによって、液体の温度を20℃に保持した。この状態で、容器にアンモニア水(アンモニア濃度:29wt%)2gと水18gを添加し、攪拌しながら、エタノール6mlに混合したシリコンエトキシド6gを2時間かけて滴下した。したがって、シリコンエトキシドの滴下速度は、エタノール100ml当たり3g/時間である。そして、シリコンエトキシドの滴下開始から3時間反応させた。反応後、十分の量のエタノールで希釈・洗浄した後、濾過することによって複合磁性粉を取り出した。取り出された複合磁性粉を真空乾燥機を用いて180℃で8時間乾燥した。乾燥後、回転式チューブ炉を用いて窒素雰囲気で650℃で30分間加熱処理した。これにより、実施例1の複合磁性粉を得た。
エタノール6mlに混合したシリコンエトキシド6gを1時間かけて滴下した他は、実施例1と同じ方法で実施例2の複合磁性粉を得た。したがって、シリコンエトキシドの滴下速度は、エタノール100ml当たり6g/時間である。
反応時における液体の温度を30℃に設定した他は、実施例1と同じ方法で実施例3の複合磁性粉を得た。
反応時における液体の温度を40℃に設定した他は、実施例1と同じ方法で実施例3の複合磁性粉を得た。
反応時における液体の温度を40℃に設定した他は、実施例2と同じ方法で比較例1の複合磁性粉を得た。
実施例1〜4及び比較例1の複合磁性粉をそれぞれエポキシ樹脂中に混錬し、硬化剤を添加した後、熱硬化させることによって測定用サンプルを作製した。次に、FIB(集束イオンビーム)装置を用いて測定用サンプルを切断することによって薄片を切り出し、TEM(透過電子顕微鏡)のサンプルホルダー上に薄片を固定した。さらに、FIBを用いて薄片の厚みを約100nmまで薄くした後、STEM(走査透過電子顕微鏡)を用いて20万倍の画像を得た。得られた画像の中から絶縁層の領域を二値化し、空隙の占める割合を面積換算することによって空隙率を算出した。
上述した空隙率の算出に用いたサンプルをそのまま用い、STEMのTEMモードで100万倍の画像を得た。得られた画像から絶縁層を形成している粒子径の平均値を算出した。
実施例1〜4及び比較例1の複合磁性粉をそれぞれ5g秤量し、三菱ケミカルアナリテック社製のハイレスタUX MCP−HT800の測定冶具に投入した後、直径10mmの測定電極に1Vの電圧を印加し、20kNの圧力を掛けた状態における体積抵抗率を測定した。体積抵抗率を測定は、複合磁性粉を150℃の環境に1000時間放置する耐熱試験を行う前後において行った。
評価結果を表1に示す。
4 磁性粉
6 絶縁層
8 空隙
A 領域
Claims (5)
- 鉄を含む磁性粉の表面が酸化シリコンからなる絶縁層で被覆されてなる複合磁性粉であって、
前記絶縁層には空隙が含まれており、前記絶縁層の断面における空隙の面積比率が5%以下であることを特徴とする複合磁性粉。 - 前記絶縁層を構成する酸化シリコンの平均粒径が6nm以下であることを特徴とする請求項1に記載の複合磁性粉。
- 請求項1又は2に記載の複合磁性粉と樹脂を含む圧粉磁心。
- 鉄を含む磁性粉が分散された液体にシリコンエトキシドを滴下することによって、前記磁性粉の表面を酸化シリコンからなる絶縁層で被覆する方法であって、
滴下時における前記液体の温度を40℃以下とし、且つ、滴下速度を前記液体100ml当たり3g/時間以下とすることを特徴とする複合磁性粉の製造方法。 - 鉄を含む磁性粉が分散された液体にシリコンエトキシドを滴下することによって、前記磁性粉の表面を酸化シリコンからなる絶縁層で被覆する方法であって、
滴下時における前記液体の温度を30℃以下とし、且つ、滴下速度を前記液体100ml当たり6g/時間以下とすることを特徴とする複合磁性粉の製造方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019136713A JP7400241B2 (ja) | 2019-07-25 | 2019-07-25 | 複合磁性粉及びこれを用いた圧粉磁心 |
KR1020200067104A KR102296263B1 (ko) | 2019-07-25 | 2020-06-03 | 복합 자성분 및 이를 이용한 압분 자심, 및 복합 자성분의 제조방법 |
US16/925,633 US11682508B2 (en) | 2019-07-25 | 2020-07-10 | Composite magnetic powder, powder magnetic core using the same, and manufacturing method for composite magnetic powder |
CN202010721753.7A CN112289536B (zh) | 2019-07-25 | 2020-07-24 | 复合磁性粉及使用其的压粉磁芯、以及复合磁性粉的制造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019136713A JP7400241B2 (ja) | 2019-07-25 | 2019-07-25 | 複合磁性粉及びこれを用いた圧粉磁心 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2021021096A true JP2021021096A (ja) | 2021-02-18 |
JP7400241B2 JP7400241B2 (ja) | 2023-12-19 |
Family
ID=74187606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019136713A Active JP7400241B2 (ja) | 2019-07-25 | 2019-07-25 | 複合磁性粉及びこれを用いた圧粉磁心 |
Country Status (4)
Country | Link |
---|---|
US (1) | US11682508B2 (ja) |
JP (1) | JP7400241B2 (ja) |
KR (1) | KR102296263B1 (ja) |
CN (1) | CN112289536B (ja) |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000160205A (ja) * | 1998-11-30 | 2000-06-13 | Nichia Chem Ind Ltd | 希土類系磁性粉末およびその表面処理方法 |
JP2001143949A (ja) * | 1999-08-30 | 2001-05-25 | Sumitomo Special Metals Co Ltd | 耐食性被膜を有する希土類系永久磁石の製造方法 |
JP2005206880A (ja) * | 2004-01-22 | 2005-08-04 | Toda Kogyo Corp | 軟磁性材料及びその製造法、該軟磁性材料を含む圧粉磁心 |
US20070128439A1 (en) * | 2005-12-06 | 2007-06-07 | Kim Sang H | Core-shell type nanoparticles and method for preparing the same |
WO2009028486A1 (ja) * | 2007-08-30 | 2009-03-05 | Sumitomo Electric Industries, Ltd. | 軟磁性材料、圧粉磁心、軟磁性材料の製造方法および圧粉磁心の製造方法 |
JP2009120915A (ja) * | 2007-11-16 | 2009-06-04 | Kobe Steel Ltd | 圧粉磁心用鉄粉及びその製造方法 |
JP2009302165A (ja) * | 2008-06-11 | 2009-12-24 | Tamura Seisakusho Co Ltd | 圧粉磁心及びその製造方法 |
WO2013035496A1 (ja) * | 2011-09-08 | 2013-03-14 | 昭和電工株式会社 | 金属粉末含有組成物の製造方法 |
JP2013209693A (ja) * | 2012-03-30 | 2013-10-10 | Hitachi Metals Ltd | 複合磁性金属粉末、その製造方法、及び、圧粉磁心 |
JP2014116573A (ja) * | 2012-02-06 | 2014-06-26 | Ntn Corp | 磁心用粉末および圧粉磁心 |
JP2015095533A (ja) * | 2013-11-12 | 2015-05-18 | 株式会社デンソー | 軟磁性部材の製造方法および軟磁性部材 |
JP2017188678A (ja) * | 2016-03-31 | 2017-10-12 | 三菱マテリアル株式会社 | シリカ系絶縁被覆圧粉磁心およびその製造方法と電磁気回路部品 |
JP2018165397A (ja) * | 2016-07-15 | 2018-10-25 | Dowaエレクトロニクス株式会社 | 鉄粉およびその製造方法並びに前駆体の製造方法並びにインダクタ用成形体およびインダクタ |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007129154A (ja) * | 2005-11-07 | 2007-05-24 | Hitachi Powdered Metals Co Ltd | 軟磁性圧粉体、磁性粉および軟磁性体の処理液ならびに処理方法、圧粉体を用いたモータ |
JP5229526B2 (ja) * | 2007-06-13 | 2013-07-03 | 国立大学法人東京農工大学 | 磁性超微粒子及びその製造方法 |
JP5462356B2 (ja) * | 2010-03-26 | 2014-04-02 | 日立粉末冶金株式会社 | 圧粉磁心及びその製造方法 |
KR101963265B1 (ko) * | 2013-10-30 | 2019-03-28 | 삼성전기주식회사 | 인덕터 부품 |
JP6930722B2 (ja) * | 2017-06-26 | 2021-09-01 | 太陽誘電株式会社 | 磁性材料、電子部品及び磁性材料の製造方法 |
-
2019
- 2019-07-25 JP JP2019136713A patent/JP7400241B2/ja active Active
-
2020
- 2020-06-03 KR KR1020200067104A patent/KR102296263B1/ko active IP Right Grant
- 2020-07-10 US US16/925,633 patent/US11682508B2/en active Active
- 2020-07-24 CN CN202010721753.7A patent/CN112289536B/zh active Active
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000160205A (ja) * | 1998-11-30 | 2000-06-13 | Nichia Chem Ind Ltd | 希土類系磁性粉末およびその表面処理方法 |
JP2001143949A (ja) * | 1999-08-30 | 2001-05-25 | Sumitomo Special Metals Co Ltd | 耐食性被膜を有する希土類系永久磁石の製造方法 |
JP2005206880A (ja) * | 2004-01-22 | 2005-08-04 | Toda Kogyo Corp | 軟磁性材料及びその製造法、該軟磁性材料を含む圧粉磁心 |
US20070128439A1 (en) * | 2005-12-06 | 2007-06-07 | Kim Sang H | Core-shell type nanoparticles and method for preparing the same |
WO2009028486A1 (ja) * | 2007-08-30 | 2009-03-05 | Sumitomo Electric Industries, Ltd. | 軟磁性材料、圧粉磁心、軟磁性材料の製造方法および圧粉磁心の製造方法 |
JP2009120915A (ja) * | 2007-11-16 | 2009-06-04 | Kobe Steel Ltd | 圧粉磁心用鉄粉及びその製造方法 |
JP2009302165A (ja) * | 2008-06-11 | 2009-12-24 | Tamura Seisakusho Co Ltd | 圧粉磁心及びその製造方法 |
WO2013035496A1 (ja) * | 2011-09-08 | 2013-03-14 | 昭和電工株式会社 | 金属粉末含有組成物の製造方法 |
JP2014116573A (ja) * | 2012-02-06 | 2014-06-26 | Ntn Corp | 磁心用粉末および圧粉磁心 |
JP2013209693A (ja) * | 2012-03-30 | 2013-10-10 | Hitachi Metals Ltd | 複合磁性金属粉末、その製造方法、及び、圧粉磁心 |
JP2015095533A (ja) * | 2013-11-12 | 2015-05-18 | 株式会社デンソー | 軟磁性部材の製造方法および軟磁性部材 |
JP2017188678A (ja) * | 2016-03-31 | 2017-10-12 | 三菱マテリアル株式会社 | シリカ系絶縁被覆圧粉磁心およびその製造方法と電磁気回路部品 |
JP2018165397A (ja) * | 2016-07-15 | 2018-10-25 | Dowaエレクトロニクス株式会社 | 鉄粉およびその製造方法並びに前駆体の製造方法並びにインダクタ用成形体およびインダクタ |
Also Published As
Publication number | Publication date |
---|---|
JP7400241B2 (ja) | 2023-12-19 |
US11682508B2 (en) | 2023-06-20 |
CN112289536B (zh) | 2024-04-02 |
CN112289536A (zh) | 2021-01-29 |
KR102296263B1 (ko) | 2021-08-31 |
KR20210012898A (ko) | 2021-02-03 |
US20210027923A1 (en) | 2021-01-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108701519B (zh) | 二氧化硅系绝缘包覆压粉磁芯及其制造方法和电磁电路部件 | |
JP5099480B2 (ja) | 軟磁性金属粉末、圧粉体、および軟磁性金属粉末の製造方法 | |
JP6700919B2 (ja) | シリカ系絶縁被覆軟磁性鉄粉末およびその製造方法 | |
JP5022999B2 (ja) | 圧粉磁心及びその製造方法 | |
JP2007042891A (ja) | 軟磁性材料、軟磁性材料の製造方法、圧粉磁心および圧粉磁心の製造方法 | |
JPWO2012132783A1 (ja) | 複合軟磁性粉末及びその製造方法、並びにそれを用いた圧粉磁心 | |
JP5916392B2 (ja) | 圧粉軟磁性体、圧粉磁性体の製造方法、及びモータ | |
WO2014013914A1 (ja) | 圧粉磁心用粉末、および圧粉磁心 | |
JP2016051899A (ja) | コイル部品 | |
JP2024038321A (ja) | 軟磁性合金粉及びその製造方法、並びに軟磁性合金粉から作られるコイル部品及びそれを載せた回路基板 | |
WO2019069923A1 (ja) | シリカ系絶縁被覆軟磁性粉末およびその製造方法 | |
JP2019178402A (ja) | 軟磁性粉末 | |
CN108573786B (zh) | 压粉磁芯 | |
JP2022008547A (ja) | SiO2含有被膜を備えたSi含有Fe基合金粉及びその製造方法 | |
TW202035734A (zh) | 軟磁性合金粉及其製造方法、以及由軟磁性合金粉製作之線圈零件及搭載其之電路基板 | |
WO2017170901A1 (ja) | シリカ系絶縁被覆圧粉磁心およびその製造方法と電磁気回路部品 | |
JP2021021096A (ja) | 複合磁性粉及びこれを用いた圧粉磁心、並びに、複合磁性粉の製造方法 | |
JP2007273929A (ja) | 絶縁被膜軟磁性金属粉末と圧粉磁芯、および、それらの製造方法 | |
JP2021021097A (ja) | 複合磁性粉及びこれを用いた圧粉磁心、並びに、複合磁性粉の製造方法 | |
JP5332408B2 (ja) | 圧粉磁心及びその製造方法 | |
JP2020127043A (ja) | シリカ系絶縁被覆軟磁性粉末 | |
JP2015115482A (ja) | 軟磁性金属微粒子および磁性体複合材料 | |
JP2019071433A (ja) | コイル部品 | |
JP6694748B2 (ja) | シリカ系絶縁皮膜形成用コーティング液およびその製造方法 | |
JP2008088459A (ja) | 高強度、高磁束密度および高抵抗を有する複合軟磁性焼結材の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20220513 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20230314 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20230425 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20230622 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20230824 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20231107 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20231120 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7400241 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |