JP6815214B2 - 高周波で用いる扁平粉末およびこれを含有する磁性シート - Google Patents
高周波で用いる扁平粉末およびこれを含有する磁性シート Download PDFInfo
- Publication number
- JP6815214B2 JP6815214B2 JP2017018363A JP2017018363A JP6815214B2 JP 6815214 B2 JP6815214 B2 JP 6815214B2 JP 2017018363 A JP2017018363 A JP 2017018363A JP 2017018363 A JP2017018363 A JP 2017018363A JP 6815214 B2 JP6815214 B2 JP 6815214B2
- Authority
- JP
- Japan
- Prior art keywords
- particle size
- less
- average particle
- magnetic
- flux density
- 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.)
- Active
Links
- 239000000843 powder Substances 0.000 title description 26
- 239000002245 particle Substances 0.000 claims description 25
- 230000004907 flux Effects 0.000 claims description 21
- 239000006247 magnetic powder Substances 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 2
- 230000035699 permeability Effects 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 12
- 229910045601 alloy Inorganic materials 0.000 description 10
- 239000000956 alloy Substances 0.000 description 10
- 239000002994 raw material Substances 0.000 description 6
- 229910001566 austenite Inorganic materials 0.000 description 5
- 229910000734 martensite Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910002796 Si–Al Inorganic materials 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910019819 Cr—Si Inorganic materials 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910017060 Fe Cr Inorganic materials 0.000 description 2
- 229910002544 Fe-Cr Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910000702 sendust Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004709 Chlorinated polyethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000009689 gas atomisation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
-
- 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
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
-
- 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
- H01F1/14708—Fe-Ni based alloys
- H01F1/14733—Fe-Ni based alloys in the form of particles
-
- 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
- H01F1/28—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 dispersed or suspended in a bonding agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- 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
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- 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
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/068—Flake-like particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/35—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2304/00—Physical aspects of the powder
- B22F2304/10—Micron size particles, i.e. above 1 micrometer up to 500 micrometer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
-
- 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
- H01F1/14708—Fe-Ni based alloys
- H01F1/14733—Fe-Ni based alloys in the form of particles
- H01F1/14741—Fe-Ni based alloys in the form of particles pressed, sintered or bonded together
- H01F1/1475—Fe-Ni based alloys in the form of particles pressed, sintered or bonded together the particles being insulated
- H01F1/14758—Fe-Ni based alloys in the form of particles pressed, sintered or bonded together the particles being insulated by macromolecular organic substances
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Powder Metallurgy (AREA)
- Soft Magnetic Materials (AREA)
Description
(1)質量%で、C:0.1%〜3.0%、Cr:1.0%〜10%未満であり、残部Feおよび不可避的不純物からなり、飽和磁束密度が1.2T超え、平均粒径D50が10μm〜65μmを特徴とする高周波で用いる扁平磁性粉末。
C:0.1%〜3.0%について
Cは、FRを増加させるための必須元素である。Cを多く含有するFe基合金粉末を粉砕、加工すると、原料粉末に含有されるオーステナイト相が加工誘起マルテンサイト変態を引き起こす。この加工誘起マルテンサイトにより、FRが増加することが知られている。0.1%以下では加工誘起マルテンサイト変態が生じず、3%越えると、飽和磁束密度が低くなる。したがって、好ましくは、0.2%〜2.8%、さらに好ましくは、0.4%〜2.6%である。
Crは、マルテンサイト変態開始温度Ms(以下、Ms点とする)を低下させ、かつ耐食性を向上させる。Crを添加させ、Ms点を低下させることで、原料粉末の残留オーステナイト相を生成させる。この状態で扁平加工を行うことにより、平均粒径が大きく、扁平度(アスペクト比)の高い扁平粉が得られる。1.0%未満の場合、残留オーステナイトが生成せず、原料粉の硬さが増加し、平均粒径が減少する。10%を超えると、飽和磁束密度が低くなる、または、硬さが減少し、平均粒径が過度に増加する。したがって、好ましくは、2.0%〜9.0%、さらに好ましくは、3.0%〜8.0%である。
飽和磁束密度は、FRを増加させる磁気特性である。高周波域で電磁波吸収に必要なFRを得るためには、1.2T以上要求される。したがって、好ましくは、1.3T超え、さらに好ましくは、1.4T超えることである。
平均粒径D50は磁性シートの成形性に大きく影響する特性である。10μm以下の場合、扁平粉末が凝集しやすく、磁性シートの柔軟性に欠ける。65μm超えるとシート成形時にシート表面に突起が発生しやすく、磁性シートの平面性に欠けるため好ましくない。したがって、好ましくは、15μm〜60μm、さらに好ましくは、25μm〜55μmである。なお、ここでの平均粒径D50は、レーザー回折方式測定装置を用いて測定した体積分布の積算で50%になるときの粒径のことである。
Si、Mn、Niは、Ms点調整および硬さ調整に適宜含有される。Si、Mnは1.5%以上を超えると飽和磁束密度を低下させる。また、硬さを急激に増加させ、扁平化後の平均粒径D50を減少させる。Niに関しては、1.5%を超えると、硬さの減少が著しく、扁平加工後の平均粒径D50を過度に増加させる。したがって、好ましくは、0.1%以上0.9%%以下、さらに好ましくは、0.3%〜0.7%である。
Coは、Ms点の調整および硬さ調整に使用されるとともに、耐食性を向上させる。CoはMs点を増加させる数少ない元素の1つであり、かつ飽和磁束密度も増加させる。しかし、高価な金属であるため、多量の添加は材料費を急激にあげることになるため、必要最低限の含まれることが望ましい。したがって、好ましくは、1.0%〜8.0%、さらに好ましくは、1.0%〜5.0%である。
[扁平粉末の作製]
まず、表1、2に示す組成について、ガスアトマイズ法により金属粉末を作製し、−150μmに分級した。これらの原料粉末をアトライター装置により、扁平加工をおこなった。アトライターはSUJ2製の直径4.8mmのボールを使用し、原料粉末と工業エタノールとともに撹拌容器に投入し、羽根の回転数250rpmとして実施した。
得られた扁平粉末について、平均粒径D50、飽和磁束密度の評価をおこなった。平均粒径D50はレーザー回折方式測定装置、飽和磁束密度はVSM装置を使用し測定した。
トルエンに塩素化ポリエチレンを溶解し、この溶液に得られた扁平粉末を混合した。出来上がったスラリーをポリエステル樹脂に塗布し、ドクターブレード法によりシート成形をおこなった。成形後、常温常湿環境で1日乾燥させた。その後、50℃、15〜60MPaの圧力でプレス加工し、磁性シートを得た。いずれの磁性シートも扁平粉の充填率を50%に揃えて評価をおこなった。
特許出願人 山陽特殊製鋼株式会社
代理人 弁理士 椎 名 彊
Claims (3)
- 質量%で、
C:0.1%〜3.0%、Cr:1.0%〜10%未満であり、残部Feおよび不可避的不純物からなり、飽和磁束密度が1.2T超え、平均粒径D50が10μm〜65μmを特徴とする高周波で用いる扁平磁性粉末。 - 請求項1に加え、Si:1.5%以下、Mn:1.5%以下、Ni:1.5%以下、Co:10%以下をいずれか1種類もしくは2種類以上を含むことを特徴とする高周波で用いる扁平磁性粉末。
- 請求項1または2項に記載された高周波で用いる磁性粉末を含有することを特徴とする磁性シート。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017018363A JP6815214B2 (ja) | 2017-02-03 | 2017-02-03 | 高周波で用いる扁平粉末およびこれを含有する磁性シート |
CN201880009262.0A CN110235212B (zh) | 2017-02-03 | 2018-02-02 | 磁性扁平粉末和含有其的磁性片 |
PCT/JP2018/003649 WO2018143427A1 (ja) | 2017-02-03 | 2018-02-02 | 磁性扁平粉末及びこれを含有する磁性シート |
KR1020197020883A KR102369149B1 (ko) | 2017-02-03 | 2018-02-02 | 자성 편평 분말 및 이것을 함유하는 자성 시트 |
US16/528,930 US20190351482A1 (en) | 2017-02-03 | 2019-08-01 | Magnetic Flaky Powder and Magnetic Sheet Containing the Same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017018363A JP6815214B2 (ja) | 2017-02-03 | 2017-02-03 | 高周波で用いる扁平粉末およびこれを含有する磁性シート |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2018125480A JP2018125480A (ja) | 2018-08-09 |
JP6815214B2 true JP6815214B2 (ja) | 2021-01-20 |
Family
ID=63041218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017018363A Active JP6815214B2 (ja) | 2017-02-03 | 2017-02-03 | 高周波で用いる扁平粉末およびこれを含有する磁性シート |
Country Status (5)
Country | Link |
---|---|
US (1) | US20190351482A1 (ja) |
JP (1) | JP6815214B2 (ja) |
KR (1) | KR102369149B1 (ja) |
CN (1) | CN110235212B (ja) |
WO (1) | WO2018143427A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112638561B (zh) * | 2018-09-13 | 2023-05-05 | 株式会社博迈立铖 | FeSiCrC合金粉末和磁芯 |
JP7333179B2 (ja) | 2019-03-22 | 2023-08-24 | 山陽特殊製鋼株式会社 | 磁性部材用の合金粉末 |
CN112908605A (zh) * | 2021-02-20 | 2021-06-04 | 深圳市普乐华科技有限公司 | 金属自防锈磁粉芯及其制作方法 |
KR102637894B1 (ko) * | 2022-09-23 | 2024-02-20 | 국방과학연구소 | 자기이방성이 제어된 판상형 자성입자 및 이의 제조방법 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0793204B2 (ja) * | 1986-11-06 | 1995-10-09 | 日立金属株式会社 | アモルフアス合金圧粉磁心 |
JP3438397B2 (ja) * | 1995-03-08 | 2003-08-18 | 三菱マテリアル株式会社 | 磁気シールド用粉末 |
JP2000252679A (ja) * | 1999-02-26 | 2000-09-14 | Daido Steel Co Ltd | 電磁波吸収特性に優れた樹脂成形品およびその製造方法 |
JP4344971B2 (ja) * | 2000-06-08 | 2009-10-14 | 三菱マテリアル株式会社 | 準マイクロ波帯で用いるのに適した電磁波ノイズ吸収シート |
JP4094583B2 (ja) * | 2004-06-22 | 2008-06-04 | 東北特殊鋼株式会社 | 非磁性部を有する複合材料およびその製造方法 |
US7744703B2 (en) * | 2005-04-08 | 2010-06-29 | Nippon Steel Corporation | Fe-based amorphous alloy strip |
JP4420235B2 (ja) * | 2006-03-27 | 2010-02-24 | Tdk株式会社 | 扁平状軟磁性金属粉末及びrfidのアンテナ用磁芯部材 |
JP5188760B2 (ja) * | 2006-12-15 | 2013-04-24 | アルプス・グリーンデバイス株式会社 | Fe基非晶質磁性合金及び磁気シート |
CN101589443A (zh) * | 2007-01-23 | 2009-11-25 | 国立大学法人东北大学 | 复合磁性体及其制造方法、使用复合磁性体的电路板以及使用复合磁性体的电子设备 |
JP5707676B2 (ja) * | 2009-05-20 | 2015-04-30 | 大同特殊鋼株式会社 | 扁平状軟磁性粉末および磁性体 |
WO2011126120A1 (ja) * | 2010-04-09 | 2011-10-13 | 日立化成工業株式会社 | 被覆金属粉、圧粉磁心及びこれらの製造方法 |
JP5780408B2 (ja) | 2010-06-28 | 2015-09-16 | 株式会社メイト | 軟磁性樹脂組成物および電磁波吸収体 |
CN101892425B (zh) * | 2010-08-20 | 2012-06-13 | 武汉中磁浩源科技有限公司 | 一种软磁合金粉末、磁粉芯及其制备方法 |
EP2738282B1 (en) * | 2011-07-28 | 2016-09-07 | Alps Green Devices Co., Ltd. | Fe-BASED AMORPHOUS ALLOY, AND DUST CORE OBTAINED USING Fe-BASED AMORPHOUS ALLOY POWDER |
US9087634B2 (en) * | 2013-03-14 | 2015-07-21 | Sumida Corporation | Method for manufacturing electronic component with coil |
JP2014204051A (ja) | 2013-04-09 | 2014-10-27 | 山陽特殊製鋼株式会社 | 軟磁性扁平粉末およびこれを用いた磁性シート |
US11008643B2 (en) * | 2013-05-15 | 2021-05-18 | Carnegie Mellon University | Tunable anisotropy of co-based nanocomposites for magnetic field sensing and inductor applications |
CN105014065B (zh) * | 2015-08-12 | 2017-11-10 | 湖州南浔闻天磁性材料有限公司 | 一种铁硅铝软磁粉末 |
-
2017
- 2017-02-03 JP JP2017018363A patent/JP6815214B2/ja active Active
-
2018
- 2018-02-02 CN CN201880009262.0A patent/CN110235212B/zh active Active
- 2018-02-02 KR KR1020197020883A patent/KR102369149B1/ko active IP Right Grant
- 2018-02-02 WO PCT/JP2018/003649 patent/WO2018143427A1/ja active Application Filing
-
2019
- 2019-08-01 US US16/528,930 patent/US20190351482A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
JP2018125480A (ja) | 2018-08-09 |
WO2018143427A1 (ja) | 2018-08-09 |
CN110235212A (zh) | 2019-09-13 |
KR102369149B1 (ko) | 2022-02-28 |
US20190351482A1 (en) | 2019-11-21 |
KR20190111023A (ko) | 2019-10-01 |
CN110235212B (zh) | 2021-03-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6815214B2 (ja) | 高周波で用いる扁平粉末およびこれを含有する磁性シート | |
JP5617173B2 (ja) | 扁平状軟磁性粉末の製造方法および電磁波吸収体 | |
JP5780408B2 (ja) | 軟磁性樹脂組成物および電磁波吸収体 | |
JP6788328B2 (ja) | 扁平状軟磁性粉末およびその製造方法 | |
JP6864498B2 (ja) | 高透磁率および高耐候性を有する軟磁性扁平粉末およびこれを含有する軟磁性樹脂組成物 | |
JP6757117B2 (ja) | 軟磁性扁平粉末及びその製造方法 | |
JPWO2019065500A1 (ja) | 圧粉磁心の製造方法、圧粉磁心及びインダクタ | |
JP6531979B2 (ja) | Fe基合金組成物、軟磁性粉体、複合磁性体、及び軟磁性粉体の製造方法 | |
CN109983550B (zh) | 高频下使用的磁性粉末和含有其的磁性树脂组合物 | |
JP2010272608A (ja) | 扁平状軟磁性粉末および磁性体 | |
JP2014204051A (ja) | 軟磁性扁平粉末およびこれを用いた磁性シート | |
JP6722403B2 (ja) | 軟磁性金属粉体及びこれを含む複合磁性シート体 | |
JP6955685B2 (ja) | 軟磁性金属粉体及びその製造方法 | |
JP6735209B2 (ja) | 高周波で用いる扁平粉末および磁性シート | |
JP2011018663A (ja) | 扁平状軟磁性粉末および磁性体 | |
JP6795995B2 (ja) | 軟磁性扁平粉末 | |
JP6515719B2 (ja) | 磁性シート用扁平状軟磁性金属粉末、磁性シート、及び、アンテナコイル | |
JP4444191B2 (ja) | 高周波磁性材料、高周波磁性デバイス、及び高周波磁性材料の製造方法 | |
JP2003105403A (ja) | 軟磁性扁平状粉末 | |
JP2017118114A (ja) | 軟磁性扁平粉末およびこれを用いた磁性シート | |
JP2005209753A (ja) | 軟磁性偏平粉末 | |
JP6855936B2 (ja) | 軟磁性合金粒子および電子部品 | |
WO2022265067A1 (ja) | 電磁波吸収体、及びその製造方法 | |
WO2024024853A1 (ja) | 複合磁性シート | |
JP5331425B2 (ja) | 軟磁性フェライト粒子の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20171020 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180214 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20200106 |
|
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: 20201201 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20201222 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6815214 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |