JPH0727812B2 - Amorphous magnetic core for common mode choke - Google Patents
Amorphous magnetic core for common mode chokeInfo
- Publication number
- JPH0727812B2 JPH0727812B2 JP60136958A JP13695885A JPH0727812B2 JP H0727812 B2 JPH0727812 B2 JP H0727812B2 JP 60136958 A JP60136958 A JP 60136958A JP 13695885 A JP13695885 A JP 13695885A JP H0727812 B2 JPH0727812 B2 JP H0727812B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic core
- common mode
- amorphous
- amorphous magnetic
- mode choke
- 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.)
- Expired - Lifetime
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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
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15308—Amorphous metallic alloys, e.g. glassy metals based on Fe/Ni
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Soft Magnetic Materials (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、コモンモードチョーク用として好適な周波数
特性、高電圧ノイズ減衰特性に優れるアモルファス磁心
に関するものである。Description: TECHNICAL FIELD The present invention relates to an amorphous magnetic core excellent in frequency characteristics and high voltage noise attenuation characteristics suitable for common mode chokes.
コモンモードチョーク用磁心としては、従来、主にフェ
ライト、圧粉磁心、珪素鋼板が用いられていた。Conventionally, ferrite, dust core, and silicon steel sheet have been mainly used as the common mode choke magnetic core.
圧粉磁心や珪素鋼板は透磁率の絶対値｜｜が小さく、
ノイズ減衰量が小さいという欠点がある。The absolute value of magnetic permeability ||
There is a drawback that the amount of noise attenuation is small.
一方、フェライトは圧粉磁心や珪素鋼板に比べると｜
｜が大きく周波数特性も良好であるが、飽和磁束密度が
低いため高電圧のパルス状ノイズに対して効果が小さく
なる欠点があり、磁心のサイズが大きくなって好ましく
ない。On the other hand, ferrite is more than powder core or silicon steel plate.
Although | is large and frequency characteristics are good, the saturation magnetic flux density is low, so that there is a drawback that the effect against high-voltage pulse noise becomes small, and the size of the magnetic core becomes large, which is not preferable.
最近Fe系アモルファス材料が高周波磁気特性に優れるこ
とから注目を集めており、コモンモードチョーク用磁心
に用いられつつある。Recently, Fe-based amorphous materials have been attracting attention because of their excellent high-frequency magnetic properties, and they are being used for magnetic cores for common mode chokes.
しかし、従来のFe基アモルファス材料は飽和磁束密度が
フェライト等に比べて高いため、高電圧パルス状のコモ
ンモードノイズに対しては効果が大きいものの通常のレ
ベルのコモンモードノイズに対してはフェライト並の効
果であり、特に500kHz以下の特性が十分でなかった。However, since the conventional Fe-based amorphous material has a higher saturation magnetic flux density than ferrite and the like, it is effective for high-voltage pulsed common-mode noise, but comparable to ferrite for normal-level common-mode noise. And the characteristics below 500 kHz were not sufficient.
Co基アモルファス磁心は500kHz以下の透磁率の絶対値｜
｜は大きいが、飽和磁束密度はFe基アモルファス磁心
より低いため、高電圧パルス状ノイズに対してはFe基ア
モルファス磁心より劣る。Co-based amorphous magnetic core has an absolute value of magnetic permeability of 500 kHz or less.
Although | is large, the saturation magnetic flux density is lower than that of the Fe-based amorphous magnetic core, and therefore is inferior to that of the Fe-based amorphous magnetic core with respect to high-voltage pulse noise.
従って本発明においては、Co基アモルファス磁心より高
電圧パルス特性が優れ、かつ通常の低レベルのノイズに
対する特性がフェライトより優れ、Co基アモルファス磁
心と同等以上の経時安定性に優れたコモンモードチョー
ク用アモルファス磁心を得ることを技術的課題とするも
のである。Therefore, in the present invention, a high-voltage pulse characteristic is superior to that of a Co-based amorphous magnetic core, and a characteristic against ordinary low-level noise is superior to that of a ferrite. The technical issue is to obtain an amorphous magnetic core.
上記の技術的課題を解決するため、本発明は組成式Fe
100−ｘ−ｙ−ｚ−αＭｘSiｙＢｚCuαで表され（ここ
で、ＭはV,Nb,Cr,Mo,Mnの群から選ばれる少なくとも１
種の元素、 0.1≦ｘ≦8,10≦ｙ≦18, ８≦ｚ≦9.5,0.1≦α≦３（原子％））、 る組成のアモルファス合金を用いたことを特徴とするコ
モンモードチョーク用アモルファス磁心である。In order to solve the above technical problems, the present invention provides a composition formula Fe.
100−x−y−z−α M x Si y B z Cu α (where M is at least 1 selected from the group consisting of V, Nb, Cr, Mo and Mn)
For common mode choke, characterized by using an amorphous alloy with the composition of the following elements: 0.1 ≦ x ≦ 8, 10 ≦ y ≦ 18, 8 ≦ z ≦ 9.5, 0.1 ≦ α ≦ 3 (atomic%)) It is an amorphous magnetic core.
そして、アモルファス合金の板厚が20μｍ以下であるこ
とを特徴とするコモンモードチョーク用アモルファス磁
心である。Further, the amorphous magnetic core for common mode chokes is characterized in that the plate thickness of the amorphous alloy is 20 μm or less.
また、直流Ｂ−Ｈカーブの角形比Br−Bsが50％以下であ
ることを特徴とするコモンモードチョーク用アモルファ
ス磁心である。Also, the amorphous magnetic core for a common mode choke is characterized in that the squareness ratio Br-Bs of the DC BH curve is 50% or less.
本発明において、Feは必須の元素であり、強磁性にする
ために必要なものである。In the present invention, Fe is an essential element and is necessary to make it ferromagnetic.
Ｍは経時変化の改善とノイズ減衰特性の改善のために必
須の元素である。しかして、その含有量ｘが0.1原子％
未満では経時変化およびノイズ減衰特性の改善に効果が
なく、８原子％より大きい場合は飽和磁束密度およびキ
ュリー温度の著しい低下を招き好ましくない。M is an essential element for improving the change over time and improving the noise attenuation characteristics. Then, the content x is 0.1 atom%
If it is less than 8%, there is no effect in improving aging and noise attenuation characteristics, and if it is more than 8 atomic%, the saturation magnetic flux density and the Curie temperature are significantly lowered, which is not preferable.
SiおよびＢはアモルファス形成のためと磁気特性を良好
にするために必要な元素であり、Si含有量ｙは10≦ｙ≦
18（原子％）、Ｂ含有量ｚは８≦ｚ≦9.5（原子％）に
する必要がある。すなわち、ｙが10原子％未満、ｚが８
原子％未満では磁気特性が劣化して好ましくない。一
方、ｙが18原子％を超えるとアモルファスリボンが脆化
して好ましくなく、またｚが9.5原子％を超えると経時
変化が大きくなって好ましくない。Si and B are elements necessary for amorphous formation and good magnetic properties, and the Si content y is 10 ≦ y ≦
18 (atomic%), B content z must be 8 ≦ z ≦ 9.5 (atomic%). That is, y is less than 10 atomic% and z is 8
If it is less than atomic%, the magnetic properties are deteriorated, which is not preferable. On the other hand, when y exceeds 18 atom%, the amorphous ribbon becomes brittle, which is not preferable, and when z exceeds 9.5 atom%, the change with time becomes large, which is not preferable.
Fe含有量のうち0.1〜３原子％をCuで置換するとさらに
磁気特性が効善され、ノイズ減衰特性が向上するため特
に好ましい。Substitution of 0.1 to 3 atom% of the Fe content with Cu is particularly preferable because the magnetic characteristics are further improved and the noise attenuation characteristics are improved.
αが0.1原子％未満または３原子％を越える場合には、
その効果が期待できない。When α is less than 0.1 atomic% or exceeds 3 atomic%,
The effect cannot be expected.
アモルファス合金の板厚が20μｍ以下の場合は、特に高
周波（500kHz以上）のノイズ減衰特性が改善されるた
め、さらに好ましい結果を得ることができる。When the plate thickness of the amorphous alloy is 20 μm or less, the noise attenuation characteristics especially at high frequencies (500 kHz or more) are improved, so that more preferable results can be obtained.
また、直流Ｂ−Ｈカーブの角形比Br/Bsが50％以下の場
合は、高電圧パルス状ノイズに対する減衰効果がさらに
大きくなるため好ましい。Further, when the squareness ratio Br / Bs of the DC BH curve is 50% or less, the damping effect on the high voltage pulse noise is further increased, which is preferable.
以下、本発明を実施例に基づいて説明する。 Hereinafter, the present invention will be described based on examples.
（実施例１） 単ロール法により厚さ約12μｍ、幅5mmの第１表に示す
各組成のアモルファス合金を作製し、外径19mm、内径15
mmに巻き、N2雰囲気中で熱処理を行ない、フェノール樹
脂製のケースに入れて、巻線を10ターン巻き、100kHzの
透磁率の絶対値｜|100kと5MHzの透磁率の絶対値｜
｜5Mを測定した。Example 1 An amorphous alloy of each composition shown in Table 1 having a thickness of about 12 μm and a width of 5 mm was prepared by a single roll method, and an outer diameter of 19 mm and an inner diameter of 15
around a mm, and was heat-treated in an N 2 atmosphere and placed in a phenolic resin case, the winding 10 turns turns, the absolute value of the magnetic permeability of the absolute value || 100 k and 5MHz permeability of 100kHz |
| 5M was measured.
第１表にその結果を示す。また、比較のため従来のFe基
アモルファス磁心、Co基アモルファス磁心ならびにフェ
ライトの｜|100kおよび｜｜5Mを同表中に示す。The results are shown in Table 1. For comparison, the || 100 k and || 5M of the conventional Fe-based amorphous magnetic core, Co-based amorphous magnetic core and ferrite are shown in the same table.
第１表より、本発明の磁心は、従来のFe基アモルファス
磁心、フェライトより｜|100k、｜｜5Mとも大きく
優れていることがわかる。 From Table 1, it can be seen that the magnetic core of the present invention is significantly superior to conventional Fe-based amorphous magnetic cores and ferrites in both || 100 k and || 5M .
また、Co基アモルファス磁心と同等以上の｜|100k、
｜｜5Mを有していることがわかる。Moreover, it is equivalent to or better than Co-based amorphous magnetic core || 100 k,
|| It is understood that it has 5M .
また、特にCuを含む磁心は｜|100kが大きく、好まし
いことがわかる。Further, it can be seen that especially the magnetic core containing Cu has a large || 100 k, which is preferable.
（実施例２） 第２表に本発明による磁心と従来のアモルファス磁心の
10kHzの透磁率の絶対値｜|10kの経時変化率Δ｜|10
kを比較して示す。Example 2 Table 2 shows the magnetic core according to the present invention and the conventional amorphous magnetic core.
Absolute value of magnetic permeability at 10 kHz || 10 k change over time Δ || 10
It shows by comparing k.
しかして、経時変化率Δ｜|10kは次のように定義し
た。Therefore, the change rate with time Δ || 10 k is defined as follows.
ここで、▲｜｜0 10▼k:初期の透磁率の絶対値 ▲｜｜24 10▼k:120℃で24時間保持した後の
透磁率の絶対値 表から、本発明による磁心は従来のアモルファス磁心よ
り経時変化が小さく好ましいものであることがわかる。 Here, ▲ ｜｜ 0 10 ▼ k: absolute value of initial magnetic permeability ▲ ｜｜ 24 10 ▼ k: absolute value of magnetic permeability after holding at 120 ° C. for 24 hours. It can be seen that it is preferable since it has a smaller change over time than the amorphous magnetic core.
（実施例３） 第１図はFe73Cu1Nb3.5Si13.5B9アモルファス磁心の120
℃の透磁率の絶対値の経時変化率Δ｜|10kのＢ含有量
ｚ依存性を示した図である。(Example 3) FIG. 1 shows 120 of Fe 73 Cu 1 Nb 3.5 Si 13.5 B 9 amorphous magnetic core.
It is a figure showing the B content z dependence of the rate of change Δ || 10 k of the absolute value of the magnetic permeability at ° C.
ｚが８〜9.5原子％の本発明の範囲が特に経時変化が小
さく、好ましいことがわかる。It can be seen that the range of the present invention in which z is 8 to 9.5 atomic% is preferable because the change with time is particularly small.
（実施例４） 第２図は、本発明による厚さ12μｍのFe73.5Cu1Mo3Si
13.5B9アモルファス磁心Ａの透磁率の絶対値｜｜の周
波数依存性を、フェライトＢならびに従来のFe基アモル
ファス（Fe78Si9B13）磁心ＣおよびCo基アモルファス
（Co70.3Fe4.7Si15B10）磁心Ｄと比較した図である。 (Example 4) Fig. 2 shows Fe 73.5 Cu 1 Mo 3 Si having a thickness of 12 µm according to the present invention.
13.5 B 9 The frequency dependence of the absolute value of magnetic permeability || of amorphous magnetic core A was compared to ferrite B and conventional Fe-based amorphous (Fe 78 Si 9 B 13 ) magnetic core C and Co-based amorphous (Co 70.3 Fe 4.7 Si 15 B 10 ) A diagram comparing with a magnetic core D.
本発明による磁心Ａは、従来のFe基アモルファス磁心Ｃ
より低周波側の｜｜が大きく、また広い周波数領域に
わたってフェライトＢより｜｜が優れている。さら
に、Co基アモルファス磁心Ｄと比較して同等以上の周波
数特性を有するものである。The magnetic core A according to the present invention is a conventional Fe-based amorphous magnetic core C.
|| on the lower frequency side is large, and || is superior to ferrite B over a wide frequency range. Further, it has a frequency characteristic equal to or higher than that of the Co-based amorphous magnetic core D.
（実施例５） 第３図は本発明によるFe73.5Cu1Nb3Si13.5B9アモルファ
ス磁心（Ａ）をコモンモードチョーク用に用いた場合の
コモンモードパルス（パルス幅１μｓ）に対する入力特
性を、同体積の従来のフェライト（Ｂ）、Co基アモルフ
ァス（Co70.3Fe4.7Si15B10）磁心（Ｃ）およびFe基アモ
ルファス（Fe76Si15B9）磁心（Ｄ）と比較した図であ
る。(Embodiment 5) FIG. 3 shows the input characteristics to a common mode pulse (pulse width 1 μs) when the Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 amorphous magnetic core (A) according to the present invention is used for a common mode choke. conventional ferrite of the same volume (B), shows a comparison of Co-based amorphous (Co 70.3 Fe 4.7 Si 15 B 10) core (C) and Fe-based amorphous (Fe 76 Si 15 B 9) core (D).
本発明による磁心（Ａ）で構成したコモンモードチョー
クは、従来のフェライト（Ｂ）、Co基アモルファス磁心
（Ｃ）より高電圧のパルスまで効果が大で優れており、
従来のFe基アモルファス磁心（Ｄ）とほぼ同等の特性を
有している。The common mode choke composed of the magnetic core (A) according to the present invention is more effective than the conventional ferrite (B) and Co-based amorphous magnetic core (C) up to a high voltage pulse, and is excellent.
It has almost the same characteristics as the conventional Fe-based amorphous magnetic core (D).
しかし前述のように本発明による磁心は、周波数特性が
優れているため、総合的にみるとコモンモードチョーク
用磁心としてより適しているものである。However, as described above, since the magnetic core according to the present invention has excellent frequency characteristics, it is more suitable as a common mode choke magnetic core when viewed comprehensively.
本発明によれば、従来両立が困難であったコモンモード
チョーク磁心用アモルファス磁心の周波数特性と高周波
パルス特性とが、ともに良好な特性を得ることができ、
広範な用途のコモンモードチョークに適用できるためそ
の効果は極めて顕著である。According to the present invention, both the frequency characteristics and the high-frequency pulse characteristics of the common mode choke magnetic core amorphous core, which have been difficult to be compatible with each other, can obtain good characteristics,
The effect is extremely remarkable as it can be applied to common mode chokes for a wide range of applications.
第１図はFe73Cu1Nb3.5Si13.5B9アモルファス磁心の120
℃の透磁率の絶対値の経時変化率Δ｜|10kのＢ含有量
ｚ依存性を示した図、第２図は本発明によるFe73.5Cu1M
o3Si13.5B9アモルファス磁心の透磁率の絶対値｜｜の
周波数依存性をフェライト，従来のアモルファス磁心と
比較した図、第３図は本発明によるFe73.5Cu1Nb3Si13.5
B9アモルファス磁心をコモンモードチョークに用いた場
合のコモンモードパルスに対する入力特性を同体積の従
来のフェライト、アモルファス磁心と比較して示した図
である。Figure 1 shows 120 of Fe 73 Cu 1 Nb 3.5 Si 13.5 B 9 amorphous magnetic core.
Fig. 2 shows the dependency of the absolute value of magnetic permeability at ° C on the B content z of the change rate Δ || 10 k, Fig. 2 shows Fe 73.5 Cu 1 M according to the present invention.
o 3 Si 13.5 B 9 A diagram comparing the frequency dependence of the absolute value of magnetic permeability || of an amorphous magnetic core with ferrite and a conventional amorphous magnetic core. Fig. 3 shows Fe 73.5 Cu 1 Nb 3 Si 13.5 according to the present invention.
The B 9 amorphous magnetic core is a diagram of the input characteristics shown in comparison with conventional ferrite, amorphous magnetic core of the same volume to common-mode pulses in the case of using the common mode choke.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−210154（ＪＰ，Ａ) 特開 昭59−171109（ＪＰ，Ａ) 特開 昭59−171110（ＪＰ，Ａ) 特開 昭60−43466（ＪＰ，Ａ) 特開 昭57−82454（ＪＰ，Ａ) 特開 昭58−155704（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-58-210154 (JP, A) JP-A-59-171109 (JP, A) JP-A-59-171110 (JP, A) JP-A-60- 43466 (JP, A) JP 57-82454 (JP, A) JP 58-155704 (JP, A)
Claims (3)
ｚCuαで表され（ここで、ＭはV,Nb,Cr,Mo,Mnの群から
選ばれる少なくとも１種の元素、 0.1≦ｘ≦8,10≦ｙ≦18, ８≦ｚ≦9.5,0.1≦α≦３（原子％））、 る組成のアモルファス合金を用いたことを特徴とするコ
モンモードチョーク用アモルファス磁心。1. A composition formula Fe 100-x-y-z-α M x Si y B.
z Cu α (where M is at least one element selected from the group consisting of V, Nb, Cr, Mo and Mn, 0.1 ≦ x ≦ 8, 10 ≦ y ≦ 18, 8 ≦ z ≦ 9.5, An amorphous magnetic core for a common mode choke, characterized by using an amorphous alloy having a composition of 0.1 ≦ α ≦ 3 (atomic%)).
ることを特徴とする特許請求の範囲第１項記載のコモン
モードチョーク用アモルファス磁心。2. The amorphous magnetic core for a common mode choke according to claim 1, wherein the plate thickness of the amorphous alloy is 20 μm or less.
下であることを特徴とする特許請求の範囲第１項または
第２項のいずれかに記載のコモンモードチョーク用アモ
ルファス磁心。3. Amorphous magnetic core for a common mode choke according to claim 1 or 2, wherein the squareness ratio Br / Bs of the DC BH curve is 50% or less. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60136958A JPH0727812B2 (en) | 1985-06-25 | 1985-06-25 | Amorphous magnetic core for common mode choke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60136958A JPH0727812B2 (en) | 1985-06-25 | 1985-06-25 | Amorphous magnetic core for common mode choke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61295602A JPS61295602A (en) | 1986-12-26 |
| JPH0727812B2 true JPH0727812B2 (en) | 1995-03-29 |
Family
ID=15187474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60136958A Expired - Lifetime JPH0727812B2 (en) | 1985-06-25 | 1985-06-25 | Amorphous magnetic core for common mode choke |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0727812B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3884491T2 (en) * | 1987-07-14 | 1994-02-17 | Hitachi Metals Ltd | Magnetic core and manufacturing method. |
| JP2693059B2 (en) * | 1991-07-31 | 1997-12-17 | 株式会社東芝 | Trance |
| JP3929327B2 (en) * | 2002-03-01 | 2007-06-13 | 独立行政法人科学技術振興機構 | Soft magnetic metallic glass alloy |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59171109A (en) * | 1983-03-18 | 1984-09-27 | Toshiba Corp | Choke coil |
| JPS59171110A (en) * | 1983-03-18 | 1984-09-27 | Toshiba Corp | Choke coil |
| JPS6043466A (en) * | 1983-08-19 | 1985-03-08 | Toshiba Corp | Amorphous low-magnetostriction iron alloy |
-
1985
- 1985-06-25 JP JP60136958A patent/JPH0727812B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61295602A (en) | 1986-12-26 |
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