JP2017208416A - 近傍界用ノイズ抑制シート - Google Patents
近傍界用ノイズ抑制シート Download PDFInfo
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- 239000000843 powder Substances 0.000 claims abstract description 108
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 74
- 239000000956 alloy Substances 0.000 claims abstract description 74
- 229910015136 FeMn Inorganic materials 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 15
- 239000005416 organic matter Substances 0.000 claims description 2
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- 229920002972 Acrylic fiber Polymers 0.000 description 1
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- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- 229910002546 FeCo Inorganic materials 0.000 description 1
- 229910002545 FeCoNi Inorganic materials 0.000 description 1
- 229910002555 FeNi Inorganic materials 0.000 description 1
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- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
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- 239000003822 epoxy resin Substances 0.000 description 1
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- 239000002657 fibrous material Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000007561 laser diffraction method Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
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- 239000012808 vapor phase Substances 0.000 description 1
- 238000009692 water atomization Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0083—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive non-fibrous particles embedded in an electrically insulating supporting structure, e.g. powder, flakes, whiskers
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
- H01F7/021—Construction of PM
- H01F7/0215—Flexible forms, sheets
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Dispersion Chemistry (AREA)
- Soft Magnetic Materials (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Hard Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
Description
(1)有機物からなる基材と前記基材中に担持された偏平状のFeMn合金粉末とを含み、
前記FeMn合金粉末におけるMnの濃度が2質量%以上20質量%以下であることを特徴とする近傍界用ノイズ抑制シート。
ガスアトマイズにより、表1に示す組成のFeMn合金粉末を得た。平均粒径は40〜50μmとした。次に、それぞれの合金粉末をアトライタにて偏平加工し、偏平状の合金粉末を得た。偏平状の合金粉末の厚さ及びアスペクト比の平均値を表1に示す。なお、合金粉末の厚さ及びアスペクト比の平均値については、後述する方法によって作製した各ノイズ抑制シートの厚さ方向の断面のイオンミリング研磨面をSEMにて観察し、その撮影像から既述の方法にて計測した。次に、上記合金粉末の表面に自己酸化被膜を形成するために、大気中にて80℃、1時間の酸化処理を行った後に、300℃、1時間の焼鈍処理を行った。
ガスアトマイズにより、表2に示す組成のFe(Co,Ni)Mn合金粉末を得た。平均粒径は40〜50μmとした。次に、それぞれの合金粉末をアトライタにて偏平加工し、偏平状の合金粉末を得た。偏平状の合金粉末の厚さ及びアスペクト比の平均値を表2に示す。なお、合金粉末の厚さ及びアスペクト比の平均値については、実験例1と同様の方法で計測した。次に、上記合金粉末の表面に自己酸化被膜を形成するために、大気中にて80℃、1時間の酸化処理を行った後に、300℃、1時間の焼鈍処理を行った。
ガスアトマイズにより、表3に示す組成のFe(Si,Al)Mn合金粉末を得た。平均粒径は40〜50μmとした。次に、それぞれの合金粉末をアトライタにて偏平加工し、偏平状の合金粉末を得た。偏平状の合金粉末の厚さ及びアスペクト比の平均値を表3に示す。なお、合金粉末の厚さ及びアスペクト比の平均値については、実験例1と同様の方法で計測した。次に、上記合金粉末の表面に自己酸化被膜を形成するために、大気中にて80℃、1時間の酸化処理を行った後に、300℃、1時間の焼鈍処理を行った。
ガスアトマイズにより、表4に示す組成のFe(Co,Ni,Si,Al)Mn合金粉末を得た。平均粒径は40〜50μmとした。次に、それぞれの合金粉末をアトライタにて偏平加工し、偏平状の合金粉末を得た。偏平状の合金粉末の厚さ及びアスペクト比の平均値を表4に示す。なお、合金粉末の厚さ及びアスペクト比の平均値については、実験例1と同様の方法で計測した。次に、上記合金粉末の表面に自己酸化被膜を形成するために、大気中にて80℃、1時間の酸化処理を行った後に、300℃、1時間の焼鈍処理を行った。
Claims (5)
- 有機物からなる基材と前記基材中に担持された偏平状のFeMn合金粉末とを含み、
前記FeMn合金粉末におけるMnの濃度が2質量%以上20質量%以下であることを特徴とする近傍界用ノイズ抑制シート。 - 前記FeMn合金粉末において、20質量%以下のCo及びNiのうちから選択される1種以上の元素で前記Feが置換された、請求項1に記載の近傍界用ノイズ抑制シート。
- 前記FeMn合金粉末において、10質量%以下のSi及びAlのうちから選択される1種以上の元素で前記Feが置換された、請求項1または2に記載の近傍界用ノイズ抑制シート。
- 前記合金粉末の厚さの平均値が0.1μm以上1.5μm以下である、請求項1〜3のいずれか一項に記載の近傍界用ノイズ抑制シート。
- 前記合金粉末のアスペクト比の平均値が10以上100以下である、請求項1〜4のいずれか一項に記載の近傍界用ノイズ抑制シート。
Priority Applications (3)
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JP2016098922A JP6280157B2 (ja) | 2016-05-17 | 2016-05-17 | 近傍界用ノイズ抑制シート |
KR1020170058999A KR101927221B1 (ko) | 2016-05-17 | 2017-05-12 | 근방계용 노이즈 억제 시트 |
CN201710346648.8A CN107377960B (zh) | 2016-05-17 | 2017-05-17 | 近场用噪声抑制片 |
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JP2016098922A JP6280157B2 (ja) | 2016-05-17 | 2016-05-17 | 近傍界用ノイズ抑制シート |
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JP6280157B2 JP6280157B2 (ja) | 2018-02-14 |
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KR (1) | KR101927221B1 (ja) |
CN (1) | CN107377960B (ja) |
Cited By (2)
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---|---|---|---|---|
JP2019143198A (ja) * | 2018-02-21 | 2019-08-29 | 山陽特殊製鋼株式会社 | 磁性部材用粉末 |
KR20210065896A (ko) | 2018-09-25 | 2021-06-04 | 산요오도꾸슈세이꼬 가부시키가이샤 | 자성부재용 분말 |
Families Citing this family (2)
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CN110699607B (zh) * | 2019-10-22 | 2021-08-27 | 中南大学 | 一种优化组织结构加快降解的生物铁基合金及其制备方法 |
JP7209761B2 (ja) | 2021-03-25 | 2023-01-20 | 株式会社リケン | 近傍界用ノイズ抑制シート及びその製造方法 |
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JP2019143198A (ja) * | 2018-02-21 | 2019-08-29 | 山陽特殊製鋼株式会社 | 磁性部材用粉末 |
JP7277076B2 (ja) | 2018-02-21 | 2023-05-18 | 山陽特殊製鋼株式会社 | 磁性部材用粉末 |
KR20210065896A (ko) | 2018-09-25 | 2021-06-04 | 산요오도꾸슈세이꼬 가부시키가이샤 | 자성부재용 분말 |
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JP6280157B2 (ja) | 2018-02-14 |
KR101927221B1 (ko) | 2018-12-10 |
KR20170129614A (ko) | 2017-11-27 |
CN107377960B (zh) | 2019-07-19 |
CN107377960A (zh) | 2017-11-24 |
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