JP6545992B2 - 磁性体及びそれを含む電子部品 - Google Patents
磁性体及びそれを含む電子部品 Download PDFInfo
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- H01—ELECTRIC ELEMENTS
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- 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
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- 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
- H01F1/14766—Fe-Si based alloys
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
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- 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
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- 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
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
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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
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- 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
Description
本発明によれば、Fe並びに元素L及び元素M(但し、元素LはSi又はZrであり、元素MはSi、Zr以外のFeより酸化し易い金属元素である。)を含む軟磁性合金粒子と、前記軟磁性合金粒子の一部が酸化してなる酸化膜と、を備え、隣接する軟磁性合金粒子どうしの結合の少なくとも一部は前記酸化膜を介しており、前記酸化膜は内膜と内膜より外側に位置する外膜とを有し、内膜は元素Mより元素Lを多く含み、外膜は元素Lより元素Mを多く含む、磁性体が提供される。
このような磁性体を含有する磁心を備える電子部品もまた本発明の一実施態様である。
(1)コアの中心を通るように走査型電子顕微鏡(SEM)用の断面試料を作製する。
式:Inorm(x)=(I(x)−Imin)/(Imax−Imin)
ただし、Imaxはプロファイル中の強度の最大値、Iminはプロファイル中の強度の最小値である。軟磁性合金粒子11は0.8<Inorm(x)≦1.0、酸化膜12bは0.2<Inorm(x)≦0.8、酸化膜12aは0.0≦Inorm(x)≦0.2に相当する。
熱処理は酸化雰囲気下で行うことが好ましい。より具体的には、加熱中の酸素濃度は好ましくは1%以上であり、これにより、酸化膜を介する結合部22が生成しやすくなる。酸素濃度の上限は特に定められるものではないが、製造コスト等を考慮して空気中の酸素濃度(約21%)を挙げることができる。加熱温度については、軟磁性合金粒子11自体が酸化して酸化膜12a、12bを生成し、その酸化膜12a、12bを介して結合を生成させやすくする観点からは好ましくは600〜800℃である。酸化膜12a、12bを介する結合部22を生成させやすくする観点からは、加熱時間は好ましくは0.5〜3時間である。
(磁性粒子)
アトマイズ法にて軟磁性合金粒子を調製した。アトマイズ法においてはFe、Cr、Si、Al、Zrを原料とした。軟磁性合金粒子の組成は表1記載のとおりである(単位はwt%)。ここでの組成はFe、Cr、Si、Al、Zrの合計を100wt%とし、これら主成分を100wt%に対し、イオウ(S)を所定の割合で添加している。軟磁性合金粒子の組成については、イオウ(S)については燃焼赤外吸収法で確認し、S以外の元素はプラズマ発光分析で確認した。軟磁性合金粒子の平均粒子径は10μmにした。
(磁性体の製造)
この原料粒子100重量部を、PVAバインダ1.5重量部とともに撹拌混合し、潤滑剤として0.5重量部のステアリン酸Znを添加した。その後、後述の各評価のための形状に、6〜12ton/cm2の成形圧力で成形した。このとき、成形圧力は磁性体における軟磁性合金粒子の充填率が85vol%になるように調節した。次いで、大気雰囲気下(酸化雰囲気下)において実施例11は750℃とし、実施例11以外は700℃にて1時間熱処理を行い、磁性体を得た。
(磁性粒子)
アトマイズ法にて軟磁性合金粒子を調製した。アトマイズ法においてはFe、Cr、Siを原料とした。軟磁性合金粒子の組成は表2記載のとおりである(単位はwt%)。
この原料粒子100重量部と、所定の割合の塩化鉄(III)粉末を、PVAバインダ1.5重量部とともに撹拌混合し、潤滑剤として0.5重量部のステアリン酸Znを添加した。塩化鉄(III)粉末の添加量はFe、Cr、Si、Alの合計を100wt%とし、これら主成分を100wt%に対し、塩素(Cl)が所定の割合となるようにした。塩化鉄(III)粉末の添加量は、FeCl3として表2記載のとおりである。その後、後述の各評価のための形状に、6〜12ton/cm2の成形圧力で成形した。このとき、成形圧力は磁性体における軟磁性合金粒子の充填率が85vol%になるように調節した。次いで、大気雰囲気下(酸化雰囲気下)において700℃にて1時間熱処理を行い、磁性体を得た。
比較例1:内膜(識別不能)、外膜(Cr>Fe>Si)
比較例2:内膜(識別不能)、外膜(Cr>Fe>Si)
比較例3:内膜(識別不能)、外膜(Zr>Fe>Si)
比較例4:内膜(識別不能)、外膜(Zr>Fe>Si)
実施例1:内膜(Si>Fe>Cr)、外膜(Cr>Fe>Si)
実施例2:内膜(Si>Fe>Cr)、外膜(Cr>Fe>Si)
実施例3:内膜(Si>Fe>Cr)、外膜(Cr>Fe>Si)
実施例4:内膜(Zr>Al>Fe)、外膜(Al>Fe>Zr)
実施例5:内膜(Si>Fe>Cr)、外膜(Cr>Fe>Si)
実施例6:内膜(Si>Fe>Cr)、外膜(Cr>Fe>Si)
参考例7:内膜(Si>Fe>Cr)、外膜(Cr>Fe>Si)
参考例8:内膜(Si>Fe>Cr)、外膜(Cr>Fe>Si)
実施例9:内膜(Zr>Fe>Cr)、外膜(Cr>Fe>Zr)
参考例10:内膜(Zr>Fe>Cr)、外膜(Cr>Fe>Zr)
実施例11:内膜(Si>Fe>Cr)、外膜(Cr>Fe>Si)
実施例12:内膜(Si>Fe>Cr)、外膜(Cr>Fe>Si)
実施例13:内膜(Si>Fe>Cr)、外膜(Cr>Fe>Si)
参考例14:内膜(Si>Fe>Cr)、外膜(Cr>Fe>Si)
参考例15:内膜(Si>Fe>Cr)、外膜(Cr>Fe>Si)
参考例16:内膜(Si>Fe>Cr)、外膜(Cr>Fe>Si)
σb=(M/I)×(h/2)=3WL/2bh2
3点曲げ破断応力を測定するための試験片は、長さ50mm、幅10mm、厚さ4mmの板状の磁性体を測定試料として製造した。
12a:内膜
12b:外膜
Claims (2)
- Fe並びに元素L及び元素M(但し、元素LはSi又はZrであり、元素MはSi、Zr以外のFeより酸化し易い金属元素である。)を含む軟磁性合金粒子と、前記軟磁性合金粒子の一部が酸化してなる酸化膜と、を備え、隣接する軟磁性合金粒子どうしの結合の少なくとも一部は前記酸化膜を介しており、前記酸化膜は内膜と内膜より外側に位置する外膜とを有し、内膜は元素Mより元素Lを多く含み、外膜は元素Lより元素Mを多く含み、前記内膜の厚さが5nmから50nmの範囲であり、前記外膜の厚さが100nmから
150nmである、磁性体。 - 請求項1記載の磁性体を含有する磁心を備える電子部品。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2015073692A JP6545992B2 (ja) | 2015-03-31 | 2015-03-31 | 磁性体及びそれを含む電子部品 |
KR1020160036907A KR101888237B1 (ko) | 2015-03-31 | 2016-03-28 | 자성체 및 그것을 포함하는 전자 부품 |
TW105109896A TWI619126B (zh) | 2015-03-31 | 2016-03-29 | Magnetic body and electronic parts containing the same |
CN201610201705.9A CN106024255A (zh) | 2015-03-31 | 2016-03-31 | 磁性体和包括它的电子部件 |
US15/087,651 US10260132B2 (en) | 2015-03-31 | 2016-03-31 | Magnetic body and electronic component comprising the same |
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JP2015073692A JP6545992B2 (ja) | 2015-03-31 | 2015-03-31 | 磁性体及びそれを含む電子部品 |
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JP2016195152A JP2016195152A (ja) | 2016-11-17 |
JP6545992B2 true JP6545992B2 (ja) | 2019-07-17 |
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US (1) | US10260132B2 (ja) |
JP (1) | JP6545992B2 (ja) |
KR (1) | KR101888237B1 (ja) |
CN (1) | CN106024255A (ja) |
TW (1) | TWI619126B (ja) |
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JP6462624B2 (ja) * | 2016-03-31 | 2019-01-30 | 太陽誘電株式会社 | 磁性体およびそれを有するコイル部品 |
JP7145610B2 (ja) * | 2017-12-27 | 2022-10-03 | Tdk株式会社 | 積層コイル型電子部品 |
JP7387269B2 (ja) * | 2019-02-28 | 2023-11-28 | 太陽誘電株式会社 | 磁性体及びその製造方法、並びに磁性体を用いたコイル部品及びそれを載せた回路基板 |
JP7420534B2 (ja) * | 2019-02-28 | 2024-01-23 | 太陽誘電株式会社 | 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 |
JP7281319B2 (ja) | 2019-03-28 | 2023-05-25 | 太陽誘電株式会社 | 積層コイル部品及びその製造方法、並びに積層コイル部品を載せた回路基板 |
CN113235016A (zh) * | 2021-05-16 | 2021-08-10 | 江苏萌达新材料科技有限公司 | 一种超细软磁合金粉末及其制备方法 |
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US4244505A (en) | 1979-05-17 | 1981-01-13 | Aluminum Company Of America | Recovery of flux residues from rinse water in dip brazing |
JP2007123703A (ja) * | 2005-10-31 | 2007-05-17 | Mitsubishi Materials Pmg Corp | Si酸化膜被覆軟磁性粉末 |
JP5227756B2 (ja) * | 2008-01-31 | 2013-07-03 | 本田技研工業株式会社 | 軟磁性材料の製造方法 |
JP4866971B2 (ja) * | 2010-04-30 | 2012-02-01 | 太陽誘電株式会社 | コイル型電子部品およびその製造方法 |
US8723634B2 (en) * | 2010-04-30 | 2014-05-13 | Taiyo Yuden Co., Ltd. | Coil-type electronic component and its manufacturing method |
JP4906972B1 (ja) * | 2011-04-27 | 2012-03-28 | 太陽誘電株式会社 | 磁性材料およびそれを用いたコイル部品 |
JP2012238841A (ja) * | 2011-04-27 | 2012-12-06 | Taiyo Yuden Co Ltd | 磁性材料及びコイル部品 |
JP6091744B2 (ja) * | 2011-10-28 | 2017-03-08 | 太陽誘電株式会社 | コイル型電子部品 |
JP6012960B2 (ja) * | 2011-12-15 | 2016-10-25 | 太陽誘電株式会社 | コイル型電子部品 |
JP6218468B2 (ja) * | 2012-07-26 | 2017-10-25 | 山陽特殊製鋼株式会社 | 圧粉磁心用粉末 |
JP5626672B1 (ja) | 2013-01-16 | 2014-11-19 | 日立金属株式会社 | 圧粉磁心の製造方法、圧粉磁心およびコイル部品 |
JP6326207B2 (ja) * | 2013-09-20 | 2018-05-16 | 太陽誘電株式会社 | 磁性体およびそれを用いた電子部品 |
JP6194022B2 (ja) * | 2014-01-14 | 2017-09-06 | 日立金属株式会社 | 磁心およびそれを用いたコイル部品 |
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- 2016-03-29 TW TW105109896A patent/TWI619126B/zh active
- 2016-03-31 CN CN201610201705.9A patent/CN106024255A/zh active Pending
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KR101888237B1 (ko) | 2018-08-13 |
TWI619126B (zh) | 2018-03-21 |
KR20160117255A (ko) | 2016-10-10 |
US10260132B2 (en) | 2019-04-16 |
TW201703066A (zh) | 2017-01-16 |
US20160293308A1 (en) | 2016-10-06 |
CN106024255A (zh) | 2016-10-12 |
JP2016195152A (ja) | 2016-11-17 |
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