JPS6265969A - Mn-zn-co type ferrite - Google Patents
Mn-zn-co type ferriteInfo
- Publication number
- JPS6265969A JPS6265969A JP60205979A JP20597985A JPS6265969A JP S6265969 A JPS6265969 A JP S6265969A JP 60205979 A JP60205979 A JP 60205979A JP 20597985 A JP20597985 A JP 20597985A JP S6265969 A JPS6265969 A JP S6265969A
- Authority
- JP
- Japan
- Prior art keywords
- ferrite
- temperature
- sample
- respect
- type ferrite
- 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
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- Magnetic Ceramics (AREA)
- Soft Magnetic Materials (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、電源トランスあるいはインダクタンス素子等
に使用されるＭ ｎ −Ｚ ｎ −Ｃｏ系フェライトに
関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to M n -Z n -Co-based ferrite used in power transformers, inductance elements, and the like.
（従来の技術）
Ｍｎ−Ｚｎ系フェライトは、その磁気異方性定数に１
が非常に小さいために、本質的に初透磁率μｉは高くな
り、ヒステリシス損失は小さくなる。(Prior art) Mn-Zn ferrite has a magnetic anisotropy constant of 1.
is very small, the initial magnetic permeability μi is essentially high and the hysteresis loss is small.
このため、電源トランス用フェライト等として広く用い
られている。For this reason, it is widely used as a ferrite for power transformers.
（発明が解決しようとする問題点）
従来のＭ ｎ −Ｚ ｎ系フェライトの場合、Ｋ１が温
度変化に対して傾きをもつため、Ｋ工が○の近傍にある
温度領域が狭いという欠点があった。(Problems to be Solved by the Invention) In the case of conventional Mn-Zn-based ferrites, K1 has a slope with respect to temperature changes, so there is a drawback that the temperature range in the vicinity of ○ is narrow. Ta.
このため、例えば電源トランスとして使用する場合に、
予想される動作温度と、フェライトの損失が最小となる
温度領域とを一致させてやるというような配慮が必要で
あった。For this reason, when used as a power transformer, for example,
Consideration had to be given to matching the expected operating temperature with the temperature range where ferrite loss would be minimal.
本発明は、上記の事に鑑みて、温度に対するに□の傾き
を緩やかにし、従来より広い温度範囲でに□＝０とし、
それにより広範な温度領域において高い透磁率及び低い
損失を実現するＭ ｎ −Ｚ ｎ系フェライトを得るこ
とを目的とするものである。In view of the above, the present invention makes the slope of □ gentler with respect to temperature, sets □=0 in a wider temperature range than before, and
The purpose of this invention is to obtain Mn-Zn-based ferrite that achieves high magnetic permeability and low loss over a wide temperature range.
（問題点を解決するための手段）
Ｆｅ、０． 、 ＭｎＯ，ＺｎＯを主成分とすＭ ｎ
−Ｚ ｎ系フェライトに、ＣｏＯを０．０１〜２．０＋
ｎｏ１％含有させるものである。(Means for solving the problem) Fe, 0. , Mn whose main components are MnO and ZnO
-Z CoO is added to n-based ferrite from 0.01 to 2.0+
No. 1% is contained.
（作用）
通常使用されているＭ ｎ −Ｚ ｎ系フェライトのに
１は温度に対して正の傾きをもち、−２０〜１２０℃付
近でに□＝０となる。このとき、μｉは極大値をとる。(Function) The normally used Mn-Zn-based ferrite has a positive slope with respect to temperature, and □=0 in the vicinity of -20 to 120°C. At this time, μi takes a maximum value.
一方、各種フェライトの中で室温付近でに１が温度変化
に対して負の傾きをもつものは、Ｃｏフェライトのみで
ある。On the other hand, among various ferrites, only Co ferrite has a negative slope of 1 with respect to temperature change near room temperature.
従って、このＣｏフェライトを適量固溶させることによ
り、Ｍ ｎ −Ｚ ｎ系フェライトのに１＝０となる温
度範囲を広げるものである。Therefore, by solid-dissolving an appropriate amount of this Co ferrite, the temperature range where 1=0 for M n -Z n ferrite is expanded.
（実施例）
実施例Ｉ
Ｆｅ、 Ｏ，を５２．６ｍｏ１％、 ＭｎＯを３２．１
ｍｏ１％、 ＺｎＯを１５゜０ｍｏ１％、Ｃ００を０．
３ｍｏ１％秤量し、振動ミルにて混合した。さらに、９
００℃で２時間仮焼した後粉砕し、適量のバインダーを
加えて造粒し、外径３０ｍｍ。(Example) Example I 52.6 mo1% of Fe, O, 32.1 mo of MnO
mo1%, ZnO 15゜0mo1%, C00 0.
3mol1% was weighed and mixed in a vibrating mill. Furthermore, 9
After calcining at 00°C for 2 hours, it was crushed, and an appropriate amount of binder was added to granulate it to an outer diameter of 30 mm.
内径２０ｍｍ５高さ８＋＋＋ｍのリング試料をプレス成
形した。この試料を１３５０℃で２時間空気中で焼成し
た後、適当な酸素雰囲気中で冷却し試料を作成した。A ring sample with an inner diameter of 20 mm and a height of 8+++ m was press-molded. This sample was fired in air at 1350° C. for 2 hours, and then cooled in an appropriate oxygen atmosphere to prepare a sample.
この試料の温度変化に対するμｉ及びコア損失の測定条
件は、ｆ ＝ ２５ＫＨｚ 、 Ｂｍ ＝ ２０００Ｇ
ｓである。The measurement conditions for μi and core loss with respect to temperature changes for this sample are: f = 25KHz, Bm = 2000G
It is s.
比較例Ｉ
Ｆｅ、 ０．を５２．８ｍｏ１％、 ＭｎＯを３２．２
ｍｏ１％、 ＺｎＯを１５゜０−０１％秤量ｌ、振動ミ
ルにて混合した。さらに。Comparative Example I Fe, 0. 52.8 mo1%, MnO 32.2
Mo1% and ZnO were mixed in a vibrating mill at a weight of 15°0-01%. moreover.
９００℃で時間仮焼した後粉砕し、適量のバインダーを
加えて造粒し、外径３０ｍｍ 、内径２０ｍｍ 、高さ
８ＩＩ＋１のリング試料をプレス成形した。この試料を
１３５０℃で２時間空気中で焼成した後、適当な酸素雰
囲気中で冷却し試料を作成した。After calcining at 900° C. for an hour, the mixture was pulverized, and an appropriate amount of binder was added to granulate it, and a ring sample with an outer diameter of 30 mm, an inner diameter of 20 mm, and a height of 8II+1 was press-molded. This sample was fired in air at 1350° C. for 2 hours, and then cooled in an appropriate oxygen atmosphere to prepare a sample.
この試料の温度変化に対するμｉ及びコア損失のグラフ
を第１図のグラフ１に示す。このコア損失の測定条件は
、実施例１と同様である。Graph 1 in FIG. 1 shows a graph of μi and core loss with respect to temperature changes for this sample. The conditions for measuring this core loss are the same as in Example 1.
なお、 ＣｏＯを２．Ｏｍｏ１％以上含有した場合、室
温付近ではに１〉０となり、μｉは減少し、コア損失は
増大する。このため、Ｃ００の適切な固溶量は、０゜０
１〜２．０ｍｏ１％の範囲内にある。In addition, CoO is 2. When Omo is contained in an amount of 1% or more, it becomes 1>0 near room temperature, μi decreases, and core loss increases. Therefore, the appropriate solid solution amount of C00 is 0°0
It is within the range of 1 to 2.0 mo1%.
（発明の効果）
本発明により、従来より広い温度範囲でコア損失が低い
値をとる電源トランス用フェライトを作成することが可
能となり、また本発明により作成したフェライトは広い
温度範囲でほぼ一定の μｉをもつため、温度係数の良
好なインダクタンス素子としても広い用途を有するなど
、本発明は、産業上極めて有益なものである。(Effects of the Invention) According to the present invention, it is possible to create a ferrite for power transformers that has a lower core loss over a wider temperature range than before, and the ferrite created according to the present invention has an almost constant μi over a wide temperature range. Therefore, the present invention is extremely useful industrially, as it has a wide range of uses as an inductance element with a good temperature coefficient.
第１図は、本発明に係る一実施例と比較例との温度変化
に対するμｉ及びコア損失のグラフである。
第７ｒｇ
０ ２０ 夕０ ω め ｔＤＯ／２０５ル
シ ＆ ＜ｏと）FIG. 1 is a graph of μi and core loss with respect to temperature changes for an example according to the present invention and a comparative example. 7th rg 0 20 evening 0 ω me tDO/205 Luci &<oto)
Claims (1)
Ｏを０．０１〜２．０ｍｏｌ％含有することを特徴とす
るＭｎ−Ｚｎ−Ｃｏ系フェライト。The main components are Fe_2O_3, MnO, and ZnO, and Co
A Mn-Zn-Co ferrite characterized by containing 0.01 to 2.0 mol% of O.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60205979A JPS6265969A (en) | 1985-09-17 | 1985-09-17 | Mn-zn-co type ferrite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60205979A JPS6265969A (en) | 1985-09-17 | 1985-09-17 | Mn-zn-co type ferrite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6265969A true JPS6265969A (en) | 1987-03-25 |
| JPH0433755B2 JPH0433755B2 (en) | 1992-06-03 |
Family
ID=16515882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60205979A Granted JPS6265969A (en) | 1985-09-17 | 1985-09-17 | Mn-zn-co type ferrite |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6265969A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06290925A (en) * | 1992-08-08 | 1994-10-18 | Hitachi Ferrite Ltd | High frequency low loss ferrite for power supply |
| JP2001080952A (en) * | 1999-09-09 | 2001-03-27 | Tdk Corp | Magnetic ferrite material |
| US6940381B2 (en) | 2002-12-20 | 2005-09-06 | Tdk Corporation | Mn-Zn based ferrite, magnetic core for transformer and transformer |
| US8328553B2 (en) | 2006-03-09 | 2012-12-11 | 3M Innovative Properties Company | Device for dispensing material |
| US8561845B2 (en) | 2003-08-14 | 2013-10-22 | 3M Innovative Properties Company | Capsule for two-component materials |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4448500B2 (en) * | 1994-11-07 | 2010-04-07 | Ｊｆｅケミカル株式会社 | Mn-Zn-Co ferrite core material |
| JP7406022B1 (en) | 2022-07-26 | 2023-12-26 | Ｊｆｅケミカル株式会社 | MnZnCo ferrite |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS524753A (en) * | 1975-06-30 | 1977-01-14 | Fujitsu Ltd | Mic circulator |
| JPS59194406A (en) * | 1983-04-18 | 1984-11-05 | Matsushita Electric Ind Co Ltd | High permeability magnetic material |
-
1985
- 1985-09-17 JP JP60205979A patent/JPS6265969A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS524753A (en) * | 1975-06-30 | 1977-01-14 | Fujitsu Ltd | Mic circulator |
| JPS59194406A (en) * | 1983-04-18 | 1984-11-05 | Matsushita Electric Ind Co Ltd | High permeability magnetic material |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06290925A (en) * | 1992-08-08 | 1994-10-18 | Hitachi Ferrite Ltd | High frequency low loss ferrite for power supply |
| JP2001080952A (en) * | 1999-09-09 | 2001-03-27 | Tdk Corp | Magnetic ferrite material |
| US6940381B2 (en) | 2002-12-20 | 2005-09-06 | Tdk Corporation | Mn-Zn based ferrite, magnetic core for transformer and transformer |
| US8561845B2 (en) | 2003-08-14 | 2013-10-22 | 3M Innovative Properties Company | Capsule for two-component materials |
| US8328553B2 (en) | 2006-03-09 | 2012-12-11 | 3M Innovative Properties Company | Device for dispensing material |
| US9211168B2 (en) | 2006-03-09 | 2015-12-15 | 3M Innovative Properties Company | Device for dispensing material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0433755B2 (en) | 1992-06-03 |
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