JP2020119932A - 磁性部材用の難燃性粉末 - Google Patents
磁性部材用の難燃性粉末 Download PDFInfo
- Publication number
- JP2020119932A JP2020119932A JP2019007663A JP2019007663A JP2020119932A JP 2020119932 A JP2020119932 A JP 2020119932A JP 2019007663 A JP2019007663 A JP 2019007663A JP 2019007663 A JP2019007663 A JP 2019007663A JP 2020119932 A JP2020119932 A JP 2020119932A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- flame
- mass
- particles
- retardant
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 89
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000003063 flame retardant Substances 0.000 title claims abstract description 22
- 239000002245 particle Substances 0.000 claims abstract description 30
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 17
- 239000000956 alloy Substances 0.000 claims abstract description 17
- 230000004907 flux Effects 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 9
- 229910017082 Fe-Si Inorganic materials 0.000 claims abstract description 7
- 229910017133 Fe—Si Inorganic materials 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 10
- 229920005601 base polymer Polymers 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 239000002184 metal Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002994 raw material Substances 0.000 description 7
- 238000009689 gas atomisation Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910008458 Si—Cr Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910021364 Al-Si alloy Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910019819 Cr—Si Inorganic materials 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009692 water atomization Methods 0.000 description 1
Images
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
- H01F1/14766—Fe-Si based alloys
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K21/00—Fireproofing materials
- C09K21/02—Inorganic materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/10—Metal compounds
- C08K3/11—Compounds containing metals of Groups 4 to 10 or of Groups 14 to 16 of the Periodic Table
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
-
- 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
-
- 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
- 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
- H01F1/26—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 by macromolecular organic substances
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/016—Flame-proofing or flame-retarding additives
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electromagnetism (AREA)
- Inorganic Chemistry (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Soft Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
(−0.97 × P(Si) + 13.0) < PNF≦ 10 (I)
PNF= D50 × TD / ρ (II)
この数式(II)において、D50は粉末のメジアン径を表し、TDは粉末のタップ密度を表し、ρは粉末の真密度を表す。
(−0.97 × P(Si) + 13.0) < PNF≦ 10 (I)
PNF= D50 × TD / ρ (II)
この数式(II)において、D50は粉末のメジアン径を表し、TDは粉末のタップ密度を表し、ρは粉末の真密度を表す。
本発明に係る難燃性粉末は、多数の粒子の集合である。図1に、1つの粒子の断面が示されている。図1において、符号Lで示されているのは粒子の長軸の長さであり、符号Tで示されているのは粒子の厚さである。長さLは、厚さTよりも大きい。換言すれば、この粒子は扁平である。
本発明者はFeに種々の元素を添加し、難燃性及び飽和磁束密度を評価した。この結果が、下記の表1に示されている。
本明細書では、下記の数式(II)により、難燃性パラメータPNFが算出される。
PNF = D50 × TD / ρ (II)
この数式(II)において、D50は粉末のメジアン径を表し、TDは粉末のタップ密度を表し、ρは粉末の真密度を表す。真密度は、乾式密度計(島津製作所社製、型式アキュピック1330)で測定される。
(−0.97 × P(Si) + 13.0) < PNF≦ 10 (I)
この数式においてP(Si)は、Fe−Si系合金におけるSiの質量含有率である。
飽和磁束密度Bsが大きい粉末では、磁性の共鳴現象が高周波域で発生する。この観点から、粉末の飽和磁束密度Bsは1.3T以上が好ましく、1.4T以上がより好ましく、1.5T以上が特に好ましい。飽和磁束密度Bsは、2.0T以下が好ましい。
最大印加磁場:1204kA/m
粉末の質量:約70mg
保磁力Hcが大きい粉末では、磁気共鳴周波数が高い。この観点から、粉末の保磁力Hcは,500A/m以上が好ましく、550A/m以上がより好ましく、600A/m以上が特に好ましい。保磁力Hcは、1600A/m以下が好ましい。
難燃性の観点から、粉末のメジアン径D50は20μm以上が好ましく、25μm以上がより好ましく、30μm以上が特に好ましい。均質でかつ表面が平滑な磁性部材が得られうるとの観点から、メジアン径D50は90μm以下が好ましく、80μm以下がより好ましく、70μm以下が特に好ましい。
難燃性の観点から、粉末のタップ密度TDは0.6g/cm3以上が好ましく、0.7g/cm3以上がより好ましく、0.8g/cm3以上が特に好ましい。均質でかつ表面が平滑な磁性部材が得られうるとの観点から、タップ密度TDは1.7g/cm3以下が好ましく、1.5g/cm3以下がより好ましく、1.3g/cm3以下が特に好ましい。
落下高さ:10mm
タップ回数:200
本発明に係る粉末は、原料粉末に扁平加工が施されることで得られる。原料粉末は、ガスアトマイズ法、水アトマイズ法、ディスクアトマイズ法、粉砕法等によって得られうる。ガスアトマイズ法及びディスクアトマイズ法が、好ましい。
この粉末から磁性部材が得られるには、まず粉末が、樹脂及びゴムのような基材ポリマーに混練されて、ポリマー組成物が得られる。混練には、既知の方法が採用されうる。例えば、密閉式混練機、オープンロール等により、混練がなされうる。
ガスアトマイズ、分級及び湿式アトライタによる扁平加工により、下記の表2に示された組成を有する実施例1の粉末を製作した。この粉末のメジアン径D50、タップ密度TD、難燃性パラメータPNF、飽和磁束密度Bs及び保磁力Hcが、下記の表2に示されている。
組成を下記の表2に示される通りとした他は実施例1と同様にして、実施例2−5及び比較例1−5の粉末を製作した。
粉末が、消防法に定められる第2類第1種可燃性固体に該当するか否かを、小ガス炎着火試験により判定した。判定基準は、以下の通りである。
A:下記Bに該当しない。
B:3秒以内に着火し、かつ燃焼が継続する。
判定がAである粉末は、第1種可燃性固体でないと見なされる。判定がBである粉末は、第1種可燃性固体であると見なされる。この結果が、下記の表2に示されている。
PNF= −0.97 × P(Si) + 13.0
である。実施例1−5の粉末は、このグラフにおいて、直線L2よりも上に位置する。換言すれば、実施例1−5の粉末は、下記数式を具備する。
(−0.97 × P(Si) + 13.0) < PNF
Claims (3)
- 多数の扁平粒子からなり、
これらの粒子の材質が、7質量%以上12質量%以下のSiを含有するFe−Si系合金であり、
上記合金におけるSiの質量含有率P(Si)と、下記数式(II)で算出される難燃性パラメータPNFとが、下記数式(I)を満たす、磁性部材用の難燃性粉末。
(−0.97 × P(Si) + 13.0) < PNF≦ 10 (I)
PNF= D50 × TD / ρ (II)
(上記数式(II)において、D50は上記粉末のメジアン径を表し、TDは上記粉末のタップ密度を表し、ρは上記粉末の真密度を表す。) - その飽和磁束密度が1.3T以上である請求項1に記載の難燃性粉末。
- 基材ポリマーと、この基材ポリマーに分散する難燃性粉末とを含んでおり、
上記難燃性粉末が、多数の扁平粒子からなり、
これらの粒子の材質が、7質量%以上12質量%以下のSiを含有するFe−Si系合金であり、
上記合金におけるSiの質量含有率P(Si)と、上記粉末における下記数式(II)で算出される難燃性パラメータPNFとが、下記数式(I)を満たす、磁性部材用のポリマー組成物。
(−0.97 × P(Si) + 13.0) < PNF≦ 10 (I)
PNF= D50 × TD / ρ (II)
(上記数式(II)において、D50は上記粉末のメジアン径を表し、TDは上記粉末のタップ密度を表し、ρは上記粉末の真密度を表す。)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019007663A JP7257150B2 (ja) | 2019-01-21 | 2019-01-21 | 磁性部材用の難燃性粉末 |
PCT/JP2019/049422 WO2020153050A1 (ja) | 2019-01-21 | 2019-12-17 | 磁性部材用の難燃性粉末及びポリマー組成物 |
US17/424,225 US20220119713A1 (en) | 2019-01-21 | 2019-12-17 | Flame Retardant Powder for Magnetic Member, and Polymer Composition |
KR1020217008803A KR102620616B1 (ko) | 2019-01-21 | 2019-12-17 | 자성부재용 난연성분말 및 폴리머 조성물 |
CN201980068874.1A CN112868071A (zh) | 2019-01-21 | 2019-12-17 | 磁性构件用的阻燃性粉末和聚合物组成物 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019007663A JP7257150B2 (ja) | 2019-01-21 | 2019-01-21 | 磁性部材用の難燃性粉末 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2020119932A true JP2020119932A (ja) | 2020-08-06 |
JP7257150B2 JP7257150B2 (ja) | 2023-04-13 |
Family
ID=71735697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019007663A Active JP7257150B2 (ja) | 2019-01-21 | 2019-01-21 | 磁性部材用の難燃性粉末 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220119713A1 (ja) |
JP (1) | JP7257150B2 (ja) |
KR (1) | KR102620616B1 (ja) |
CN (1) | CN112868071A (ja) |
WO (1) | WO2020153050A1 (ja) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002343618A (ja) * | 2001-03-12 | 2002-11-29 | Yaskawa Electric Corp | 軟質磁性材料およびその製造方法 |
JP2005236219A (ja) * | 2004-02-23 | 2005-09-02 | Daido Steel Co Ltd | 複合磁性シート |
JP2006147959A (ja) * | 2004-11-22 | 2006-06-08 | Daido Steel Co Ltd | 圧粉磁芯および圧粉磁芯の製造方法 |
WO2008020574A1 (fr) * | 2006-08-14 | 2008-02-21 | Tyco Electronics Raychem K.K. | Élément d'antenne et procédé de fabrication de celui-ci |
JP2011029678A (ja) * | 2007-11-20 | 2011-02-10 | Tyco Electronics Raychem Kk | アンテナ素子およびその製造方法 |
JP2011222897A (ja) * | 2010-04-14 | 2011-11-04 | Daido Steel Co Ltd | 圧粉磁心、圧粉磁心用磁性粉体及び圧粉磁心の製造方法 |
JP2012104765A (ja) * | 2010-11-12 | 2012-05-31 | Komatsu Seiren Co Ltd | 磁性シート及びその製造方法 |
JP2012191192A (ja) * | 2011-02-22 | 2012-10-04 | Mitsubishi Materials Corp | 低磁歪高磁束密度複合軟磁性材とその製造方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL174546C (nl) * | 1972-09-08 | 1984-07-02 | Akzo Nv | Werkwijze voor de bereiding van een (ar)alkeen-carbonzuur. |
JP6795995B2 (ja) * | 2017-02-06 | 2020-12-02 | 山陽特殊製鋼株式会社 | 軟磁性扁平粉末 |
-
2019
- 2019-01-21 JP JP2019007663A patent/JP7257150B2/ja active Active
- 2019-12-17 WO PCT/JP2019/049422 patent/WO2020153050A1/ja active Application Filing
- 2019-12-17 US US17/424,225 patent/US20220119713A1/en active Pending
- 2019-12-17 CN CN201980068874.1A patent/CN112868071A/zh active Pending
- 2019-12-17 KR KR1020217008803A patent/KR102620616B1/ko active IP Right Grant
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002343618A (ja) * | 2001-03-12 | 2002-11-29 | Yaskawa Electric Corp | 軟質磁性材料およびその製造方法 |
JP2005236219A (ja) * | 2004-02-23 | 2005-09-02 | Daido Steel Co Ltd | 複合磁性シート |
JP2006147959A (ja) * | 2004-11-22 | 2006-06-08 | Daido Steel Co Ltd | 圧粉磁芯および圧粉磁芯の製造方法 |
WO2008020574A1 (fr) * | 2006-08-14 | 2008-02-21 | Tyco Electronics Raychem K.K. | Élément d'antenne et procédé de fabrication de celui-ci |
JP2011029678A (ja) * | 2007-11-20 | 2011-02-10 | Tyco Electronics Raychem Kk | アンテナ素子およびその製造方法 |
JP2011222897A (ja) * | 2010-04-14 | 2011-11-04 | Daido Steel Co Ltd | 圧粉磁心、圧粉磁心用磁性粉体及び圧粉磁心の製造方法 |
JP2012104765A (ja) * | 2010-11-12 | 2012-05-31 | Komatsu Seiren Co Ltd | 磁性シート及びその製造方法 |
JP2012191192A (ja) * | 2011-02-22 | 2012-10-04 | Mitsubishi Materials Corp | 低磁歪高磁束密度複合軟磁性材とその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN112868071A (zh) | 2021-05-28 |
KR102620616B1 (ko) | 2024-01-03 |
US20220119713A1 (en) | 2022-04-21 |
JP7257150B2 (ja) | 2023-04-13 |
WO2020153050A1 (ja) | 2020-07-30 |
KR20210116417A (ko) | 2021-09-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3771224B2 (ja) | 非晶質軟磁性合金粉末及びそれを用いた圧粉コア及び電波吸収体 | |
TWI577809B (zh) | 軟磁性粉末、壓粉磁心及磁性元件 | |
US9840760B2 (en) | Powder made of iron-base metallic glass | |
JPWO2018139563A1 (ja) | 軟磁性粉末、Fe基ナノ結晶合金粉末、磁性部品及び圧粉磁芯 | |
JP2008135674A (ja) | 軟磁性合金粉末、圧粉体及びインダクタンス素子 | |
EP3441160A1 (en) | Iron-based metallic glass alloy powder | |
KR102369149B1 (ko) | 자성 편평 분말 및 이것을 함유하는 자성 시트 | |
WO2020195968A1 (ja) | 磁性部材用の合金粉末 | |
JP6955685B2 (ja) | 軟磁性金属粉体及びその製造方法 | |
JP2018073947A (ja) | 軟磁性合金、軟磁性合金粉末及び磁性部品 | |
WO2020153050A1 (ja) | 磁性部材用の難燃性粉末及びポリマー組成物 | |
EP3564972A1 (en) | Soft magnetic powder, powder magnetic core, magnetic element, and electronic device | |
JP2007273732A (ja) | ノイズ抑制用軟磁性金属粉末及びノイズ抑制シート | |
CN114914050A (zh) | 软磁性粉末、压粉磁芯、磁性元件以及电子设备 | |
JP2018131640A (ja) | 軟磁性扁平粉末 | |
JP2007009288A (ja) | 軟磁性合金粉末 | |
JP2018073945A (ja) | 複合磁性粒及び磁性部品 | |
WO2022172543A1 (ja) | 軟磁性扁平粉末 | |
JP2022105907A (ja) | 硬磁性粉末 | |
JP7428013B2 (ja) | 軟磁性合金粉末、電子部品及びその製造方法 | |
JP7314678B2 (ja) | 軟磁性合金粉末及びそれを用いた電子部品 | |
JP2005240138A (ja) | 軟磁性金属粉末、複合絶縁磁性組成物及び電子部品 | |
JP2023133693A (ja) | 軟磁性粉末、圧粉磁心、磁性素子および電子機器 | |
CN116403794A (zh) | 软磁性粉末、压粉磁芯、磁性元件以及电子设备 | |
WO2020054857A1 (ja) | FeSiCrC合金粉末及び磁心 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20211118 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20220705 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20220804 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20221108 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20230106 |
|
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: 20230307 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20230403 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7257150 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |