JP7427034B2 - 磁気コア用の粒子ベースの異方性複合材料 - Google Patents
磁気コア用の粒子ベースの異方性複合材料 Download PDFInfo
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- 230000005291 magnetic effect Effects 0.000 title claims description 110
- 239000002131 composite material Substances 0.000 title claims description 33
- 239000011159 matrix material Substances 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 39
- 230000005294 ferromagnetic effect Effects 0.000 claims description 36
- 238000005325 percolation Methods 0.000 claims description 22
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 15
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- 230000008018 melting Effects 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 4
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- 230000000712 assembly Effects 0.000 description 1
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- 239000002889 diamagnetic material Substances 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
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- H01F41/14—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 applying magnetic films to substrates
- H01F41/16—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 applying magnetic films to substrates the magnetic material being applied in the form of particles, e.g. by serigraphy, to form thick magnetic films or precursors therefor
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- H01F1/34—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 non-metallic substances, e.g. ferrites
- H01F1/36—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 non-metallic substances, e.g. ferrites in the form of particles
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- 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
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Description
Claims (23)
- 磁気コアであって、
マトリックス材料と、
磁気的に整列された強磁性粒子であって、前記マトリックス材料内に前記粒子の鎖を形成し、前記鎖は第1の方向に沿って伸びる磁気伝導のパーコレーション経路を形成し、それにより、前記鎖の各々が前記第1の方向に沿って伸びる一方で、前記第1の方向に直角な第2の方向に沿っては個々に異なり、かつ互いに隔てられている強磁性粒子と、
を少なくとも含んだ異方性の複合材料を含み、
前記粒子が、第1の種類の第1の粒子と、第2の種類の第2の粒子とを含み、前記第2の粒子は、前記第1の粒子よりも小さい平均直径を有し、
前記第2の粒子が、前記第1の方向に沿って前記第1の粒子の間にネッキングの橋かけを形成する、磁気コア。 - 前記粒子がマイクロメートルの長さスケールの粒子を含む、請求項1に記載の磁気コア。
- 前記第1の粒子がマイクロメートルの長さスケールの粒子を含む一方で、前記第2の粒子がナノメートルの長さスケールの粒子を含む、請求項1に記載の磁気コア。
- 前記第1の粒子および前記第2の粒子が、実質的に前記マトリックス材料の融解温度未満の平均焼結温度を有する、請求項1に記載の磁気コア。
- 前記鎖が、粒子の前記鎖の平行線構造、同心の円環構造、およびレーストラック構造のうちの1つに従って実質的に配置される、請求項1に記載の磁気コア。
- 前記マトリックス材料が誘電性の非磁性材料である、請求項1に記載の磁気コア。
- 前記マトリックス材料が常磁性材料である、請求項1に記載の磁気コア。
- 前記複合材料は、10~50の体積百分率の強磁性粒子を含む、請求項1に記載の磁気コア。
- 前記粒子の前記鎖が、前記第1の方向と、前記第1の方向および前記第2の方向の両方に対して直角な第3の方向との両方に沿って伸びる磁気伝導のパーコレーション経路を形成する、請求項1に記載の磁気コア。
- 磁気コアを含む磁気デバイスであって、前記磁気コアが、
マトリックス材料と、
磁気的に整列された強磁性粒子であって、前記マトリックス材料内に前記粒子の鎖を形成し、前記鎖は第1の方向に沿って伸びる磁気伝導のパーコレーション経路を形成し、それにより、前記鎖の各々が前記第1の方向に沿って伸びる一方で、前記第1の方向に直角な第2の方向に沿っては個々に異なり、かつ互いに隔てられている強磁性粒子と、
を少なくとも含んだ異方性の複合材料を含み、
前記粒子が、第1の種類の第1の粒子と、第2の種類の第2の粒子とを含み、前記第2の粒子は、前記第1の粒子よりも小さい平均直径を有し、
前記第2の粒子が、前記第1の方向に沿って前記第1の粒子の間にネッキングの橋かけを形成する、磁気デバイス。 - 前記デバイスが、インダクタ、トランス、増幅器、または電源デバイスのうちの1つである、請求項10に記載の磁気デバイス。
- 磁気コアの製造方法であって、前記方法は、
強磁性粒子を含むマトリックス材料を提供することと、
前記マトリックス材料内の前記強磁性粒子を磁気的に整列させるために磁場を印加し、それによって前記磁気コア用の異方性の複合材料を形成することであって、前記粒子の鎖が前記マトリックス材料内に形成され、前記鎖は第1の方向に沿って延びる磁気伝導のパーコレーション経路を形成し、それにより、前記鎖の各々が前記第1の方向に沿って伸びる一方で、前記第1の方向に直角な第2の方向に沿っては個々に異なり、かつ互いに隔てられている、異方性の複合材料を形成することと、
を含み、
前記強磁性粒子が、第1の種類の第1の粒子、ならびに第2の種類の第2の粒子を含み、前記第2の粒子は、前記第1の粒子よりも小さい平均直径を有し、
前記方法は、前記第1の方向に沿った前記第2の粒子によって前記第1の粒子を橋かけするように、前記磁場を印加する間に前記第1の粒子の間にネッキングの橋かけを形成することを更に含む、方法。 - 前記強磁性粒子がマイクロメートルの長さスケールの粒子を含む、請求項12に記載の方法。
- 前記印加する磁場が少なくとも20mTの強度を有する、請求項13に記載の方法。
- 前記マトリックス材料内の前記強磁性粒子は、形成された前記複合材料のうち、10~50の体積百分率を示す、請求項12に記載の方法。
- 前記ネッキングの橋かけを形成することは、前記第1の粒子および前記第2の粒子を焼結することを含む、請求項12に記載の方法。
- 前記方法は、形成された前記異方性の複合材料の中に前記鎖を固定化することを更に含む、請求項12に記載の方法。
- 前記第1の粒子がマイクロメートルの長さスケールの粒子を含む一方で、前記第2の粒子がナノメートルの長さスケールの粒子を含む、請求項12に記載の方法。
- 前記鎖が、粒子の前記鎖の平行線構造、同心の円環構造、およびレーストラック構造のうちの1つに従って配置されるように前記磁場が印加される、請求項12に記載の方法。
- 永久磁石および電磁石のうちの一方またはその各々を使用して前記磁場が印加される、請求項12に記載の方法。
- 前記異方性の複合材料が、請求項12に記載のステップを繰り返すことによって、この複合材料の層を連続して形成することにより形成される、請求項12に記載の方法。
- 前記マトリックス材料が、最終的に形成される前記複合材料の形状を制約するように、構造化された鋳型内に提供される、請求項12に記載の方法。
- 前記方法が、得られた前記磁気コアをデバイスに組み込むことを更に含む、請求項12に記載の方法。
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US16/442,699 | 2019-06-17 | ||
US16/442,699 US11158450B2 (en) | 2019-06-17 | 2019-06-17 | Particle-based, anisotropic composite materials for magnetic cores |
PCT/EP2020/065497 WO2020254122A1 (en) | 2019-06-17 | 2020-06-04 | Particle-based, anisotropic composite materials for magnetic cores |
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JP (1) | JP7427034B2 (ja) |
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US11158450B2 (en) | 2021-10-26 |
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KR20220002393A (ko) | 2022-01-06 |
SG11202110273XA (en) | 2021-10-28 |
WO2020254122A1 (en) | 2020-12-24 |
AU2020295628A1 (en) | 2021-10-14 |
CN113853661A (zh) | 2021-12-28 |
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