JP5930643B2 - 軟磁性合金素体およびそれを用いた電子部品 - Google Patents
軟磁性合金素体およびそれを用いた電子部品 Download PDFInfo
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- 239000002245 particle Substances 0.000 claims description 91
- 239000002923 metal particle Substances 0.000 claims description 38
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- 238000005259 measurement Methods 0.000 claims description 14
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- 239000002184 metal Substances 0.000 description 11
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- 239000012298 atmosphere Substances 0.000 description 8
- 239000011651 chromium Substances 0.000 description 8
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
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- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910017518 Cu Zn Inorganic materials 0.000 description 1
- 229910017752 Cu-Zn Inorganic materials 0.000 description 1
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- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
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- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 1
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- 238000007646 gravure printing Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
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- 239000004332 silver Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
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Classifications
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- 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
- 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
-
- 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
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Soft Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
Description
本発明は、所定の金属粒子が所定の態様で成形されてなる粒子成形体からなる軟磁性合金素体とそれを用いた電子部品に関するものである。粒子成形体は、Fe−Cr−Si系軟磁性合金からなる複数の金属粒子と、前記金属粒子の表面に形成された酸化被膜と、隣接する金属粒子表面に形成された酸化被膜を介しての結合部と、を備える。そして、前記粒子成形体のL*a*b*表色系で表現される色彩色差測定においてa*(D65)が−3〜5であり、b*(D65)が−8〜0であり、好ましくは、前記測定においてL*(D65)が22〜35である。
本発明によれば、軟磁性合金素体は所定の金属粒子が成形されてなる粒子成形体からなる。本発明において、軟磁性合金素体はコイル・インダクタ等の電子部品における磁路の役割を担う物品であり、典型的にはコイル部品におけるコアなどの形態をとる。
MINOLTA製)などを用いることができ、その場合に、例えば、測定ヘッド照射径φ11mmを選択することができる。こういった測定装置を用いて、測定サンプルの表面の70〜80mm2程度の面積について測定を行い、a*(D65)、b*(D65)、L*(D65)を求める。この測定におけるa*(D65)は数値が大きいほど赤味が強く数値が小さいほど緑味が強い。この測定におけるb*(D65)は数値が大きいほど黄味が強く数値が小さいほど青味が強い。L*(D65)は数値が大きいほど明るく数値が小さいほど暗くなる。
Fe−Cr−Si系軟磁性合金におけるSiの含有率は、好ましくは0.5〜7.0wt%であり、より好ましくは、2.0〜5.0wt%である。Siの含有量が多ければ高抵抗・高透磁率という点で好ましく、Siの含有量が少なければ成形性が良好であることに基づいている。
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、酸化被膜を介しての結合部22および金属粒子どうしの結合部21が両方とも生成しやすくなる。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、好ましくは600℃以上であり、酸化を適度に抑制して金属粒子どうしの結合部の存在を維持して透磁率を高める観点からは好ましくは900℃以下である。加熱温度はより好ましくは700〜800℃である。加熱時間は好ましくは0.5〜3時間である。
(原料粒子)
Fe−Cr−Si系の市販の合金粉末を原料粒子として用いた。合金粉末の組成はエネルギー分散型X線分析(EDS)によりZAF法で算出した。合金粉末のd50は体積基準の粒子径分布の指標であり、レーザー回折・散乱による測定装置により測定した。市販の合金粉末をそのまま原料粒子として用いた。
これら原料粒子100重量部を、熱分解温度が300℃であるPVAバインダ1.5重量部とともに撹拌混合して、造粒した。その後、見かけ密度が6.3g/cm3になるようにプレス加工してT型コアの形状を構成し、21%の酸素濃度である酸化雰囲気中、所定温度にて2時間熱処理を行った。この熱処理により、バインダが脱脂され粒子成形体が得られた。得られた粒子成形体について、3000倍に拡大したSEM観察像において、隣接する金属粒子の表面に形成されている酸化被膜が同一相であることを視認した。
上記粒子成形体をコアとするコイル部品を製造した。粒子成形体からなるコアのつば部に焼成型電極ペーストを塗布し、大気中650℃で焼成して電極を形成し、電子部品としてのコイル部品を得た。
粒子成形体の表面の色彩色差測定の測定方法は以下のとおりである。
・測定装置:色彩色差計 CR-300 (KONICA MINOLTA製)
・測定ヘッド照射径:φ11mm
・測定サンプル面積:70〜80mm2
・試料番号1:a*(D65)は6.32、 b*(D65)は9.74、 L*(D65)は33.07
・試料番号2:a*(D65)は3.65、 b*(D65)は−2.33、L*(D65)は26.79
・試料番号3:a*(D65)は1.48、 b*(D65)は−6.46、L*(D65)は28.14
・試料番号4:a*(D65)は0.13、 b*(D65)は−5.92、L*(D65)は30.66
・試料番号5:a*(D65)は3.37、 b*(D65)は−6.50、L*(D65)は24.00
・試料番号6:a*(D65)は0.37、 b*(D65)は1.37、 L*(D65)は39.00
・試料番号7:a*(D65)は−0.17、b*(D65)は2.88、 L*(D65)は43.67
・試料番号8:a*(D65)は3.68、 b*(D65)は5.30、 L*(D65)は38.43
Claims (5)
- Fe−Cr−Si系軟磁性合金からなる複数の金属粒子と、前記金属粒子の表面に形成された酸化被膜と、隣接する金属粒子表面に形成された酸化被膜を介しての結合部と、隣接する金属粒子どうしの結合部と、を備えL*a*b*表色系で表現される色彩色差測定においてa*(D65)が−3〜5であり、b*(D65)が−8〜0である、粒子成形体からなり、粒子成形体には有機樹脂からなるマトリクスが存在せず、粒子成形体の内部に空隙が存在する、軟磁性合金素体。
- 前記粒子成形体のL*a*b*表色系で表現される色彩色差測定においてL*(D65)が22〜35である請求項1記載の軟磁性合金素体。
- 前記空隙の少なくとも一部に高分子樹脂が含浸されている請求項1又は2記載の軟磁性合金素体。
- 前記酸化被膜を介しての結合部の個数は、粒子成形体に含まれる金属粒子の数と同数またはそれ以上である、請求項1〜3のいずれか1項記載の軟磁性合金素体。
- 請求項1〜4のいずれか1項記載の軟磁性合金素体を有する電子部品。
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JP2011215185A JP5930643B2 (ja) | 2011-09-29 | 2011-09-29 | 軟磁性合金素体およびそれを用いた電子部品 |
US13/627,836 US20130082815A1 (en) | 2011-09-29 | 2012-09-26 | Soft magnetic alloy element and electronic component using the same |
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JP6384752B2 (ja) * | 2014-07-15 | 2018-09-05 | 日立金属株式会社 | 磁心およびそれを用いたコイル部品 |
JP6522462B2 (ja) | 2014-08-30 | 2019-05-29 | 太陽誘電株式会社 | コイル部品 |
JP6457838B2 (ja) * | 2015-02-27 | 2019-01-23 | 太陽誘電株式会社 | 磁性体及びそれを含む電子部品 |
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JP2008195970A (ja) * | 2007-02-08 | 2008-08-28 | Nec Tokin Corp | 複合磁性材料、圧粉磁心および磁性素子 |
JP5130488B2 (ja) * | 2008-04-30 | 2013-01-30 | 新日鐵住金株式会社 | 磁気特性および被膜密着性に優れた方向性電磁鋼板およびその製造方法 |
JP5085471B2 (ja) * | 2008-09-08 | 2012-11-28 | 株式会社東芝 | コアシェル型磁性材料、コアシェル型磁性材料の製造方法、デバイス装置、およびアンテナ装置。 |
JP3149212U (ja) * | 2008-11-04 | 2009-03-19 | 積進工業株式会社 | Smdチョークコイル |
WO2010082486A1 (ja) * | 2009-01-16 | 2010-07-22 | パナソニック株式会社 | 複合磁性材料の製造方法とそれを用いた圧粉磁芯及びその製造方法 |
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 |
US8362866B2 (en) * | 2011-01-20 | 2013-01-29 | Taiyo Yuden Co., Ltd. | Coil component |
JP6081051B2 (ja) * | 2011-01-20 | 2017-02-15 | 太陽誘電株式会社 | コイル部品 |
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 |
JP5336543B2 (ja) * | 2011-04-28 | 2013-11-06 | 太陽誘電株式会社 | コイル部品 |
JP5926011B2 (ja) * | 2011-07-19 | 2016-05-25 | 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 |
-
2011
- 2011-09-29 JP JP2011215185A patent/JP5930643B2/ja active Active
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2012
- 2012-09-26 US US13/627,836 patent/US20130082815A1/en not_active Abandoned
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