JPH01136309A - Low loss oxide magnetic material - Google Patents
Low loss oxide magnetic materialInfo
- Publication number
- JPH01136309A JPH01136309A JP62295559A JP29555987A JPH01136309A JP H01136309 A JPH01136309 A JP H01136309A JP 62295559 A JP62295559 A JP 62295559A JP 29555987 A JP29555987 A JP 29555987A JP H01136309 A JPH01136309 A JP H01136309A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic material
- oxide magnetic
- low loss
- loss
- loss oxide
- 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.)
- Pending
Links
Landscapes
- 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〕
この発明は低磁気損失を有し、テレビジョンのフライバ
ックトランスやスイッチング電源等に用いられるパワー
フェライトとしての低損失酸化物磁性材料に関するもの
である。[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a low-loss oxide magnetic material that has low magnetic loss and is used as a power ferrite for use in television flyback transformers, switching power supplies, etc. be.
テレビジョンのフライバックトランスやスイッチング電
源等には、永年にわたりＭｎ −Ｚｎ系フェライトが使
用されている。Mn-Zn ferrites have been used in television flyback transformers, switching power supplies, etc. for many years.
しかるに近年ＯＡやＣＡＤ／ＣＡＭ等の急速な普及によ
り、グラフィックデイスプレィ、モニタデイスプレィ用
などの高解像度、大型化を要求する陰極線管（以下ＣＲ
Ｔと略す）の需要が増大した。これらのＣＲＴは高速度
で走査されるため、水平偏向周波数が高く、また大型化
により高出力が必要となり、従来の民生用ＴＶにはない
より高度の性能が要求されている。However, in recent years, with the rapid spread of OA, CAD/CAM, etc., cathode ray tubes (hereinafter referred to as CR
The demand for (abbreviated as T) has increased. Since these CRTs are scanned at high speed, their horizontal deflection frequency is high, and their increased size requires high output, requiring higher performance than conventional consumer TVs.
そのためフライバックトランス用コアとしても高周波化
、高出力化に伴い、コアの自己発熱などの問題が無視で
きなくなり、低損失化が急務となっている。Therefore, as the cores for flyback transformers become higher in frequency and output, problems such as self-heating of the core cannot be ignored, and there is an urgent need to reduce loss.
テレビジョンの大型化、高周波化により、フライバック
トランスにおいても高出力、高周波化が要求され、現在
標準的に使用されるＭｎ −Ｚｎ系フェライトでは、電
力損失の増大、自己発熱の増加等の問題があり、そのた
めフライバックトランスおよびコアを大型化する必要が
あった。As televisions become larger and use higher frequencies, flyback transformers are required to have higher output and higher frequencies, and the Mn-Zn ferrite currently used as standard has problems such as increased power loss and increased self-heating. Therefore, it was necessary to increase the size of the flyback transformer and core.
この発明は上述のような問題点を解決するためになされ
たもので、高出力、高周波化によるコアの自己発熱を低
減できるとともに、小型化が可能なフライバックトラン
ス用コアに使用可能な低損失酸化物磁性材料を提供する
ことを目的とする。This invention was made in order to solve the above-mentioned problems, and it is possible to reduce the self-heating of the core due to high output and high frequency, and also to create a low loss that can be used in a miniaturized flyback transformer core. The purpose is to provide an oxide magnetic material.
この発明に係る低損失酸化物磁性材料は、Ｆｅ２Ｏ５０
３５２〜６０ｍｏｌ％、Ｚｎ０４〜１３ｍｏｌ％および
ＭｎＯ３７〜４５ＩＩｌｏ１％ を主成分とし、これに
Ｓｉｎ、 ０．００５〜０．０１５ｗｔ％、ＣａＣＯ３
０，１〜０．３ｗｔ％およびＶ、 Ｏ。The low-loss oxide magnetic material according to the present invention is Fe2O50
The main components are 352 to 60 mol%, Zn04 to 13 mol%, and MnO37 to 45IIlo1%, with Sin, 0.005 to 0.015 wt%, CaCO3
0.1-0.3 wt% and V, O.
０．００５〜０．０２０ｗｔ％を副成分として含有する
ものである。It contains 0.005 to 0.020 wt% as a subcomponent.
この発明における低損失酸化物磁性材料は、Ｍｎ −Ｚ
ｎ系フェライトの飽和磁束密度を低下させることなく、
電力損失を改善できる副成分を添加したものであり、高
い飽和磁束密度を有しながら、低損失であるため、フラ
イバックトランス用コアとして用いる場合、自己発熱を
抑制し、信頼性を向上させることができる。The low-loss oxide magnetic material in this invention is Mn-Z
without reducing the saturation magnetic flux density of n-based ferrite.
It contains subcomponents that can improve power loss, and has a high saturation magnetic flux density and low loss, so when used as a core for a flyback transformer, it suppresses self-heating and improves reliability. Can be done.
以下、本発明の実施例について説明する。 Examples of the present invention will be described below.
実施例１
モル比でＦｅ２Ｏ５０３５３．５％、Ｍｎ０３９．０％
、ＺｎＯ７，５％の組成になるように秤量した。Example 1 Molar ratio: Fe2O50353.5%, Mn039.0%
, ZnO was weighed to have a composition of 7.5%.
これらの粉末混合物を９６５℃で１時間仮焼し、次いで
ボールミルにて４時間粉砕して試料とした。These powder mixtures were calcined at 965° C. for 1 hour, and then ground in a ball mill for 4 hours to prepare samples.
次にこの試料を表１に示すＣａＣＯ３０，０２ｗｔ％、
５ｉｎ２Ｇ２Ｏ５０１ｗｔ％、ＶｚＯｓ Ｏ〜０．０２
０ｗｔ％の配合割合になるように摺かい混合機にて均一
に混合後、ポリビニールアルコール溶液をフェライト粉
末に対して１０％＋１％添加して整粒し、環状試料に１
ｔｏｎ／ａＪの圧力で成形した。Next, this sample was treated with CaCO30.02wt% shown in Table 1,
5in2G2O501wt%, VzOs O~0.02
After uniformly mixing with a scraping mixer so that the blending ratio is 0 wt%, 10% + 1% polyvinyl alcohol solution is added to the ferrite powder, sized, and 1% is added to the annular sample.
Molding was performed at a pressure of ton/aJ.
これらの試料を１４００℃で３時間、窒素雰囲気中で焼
成して得られた環状試料について電磁気特性を測定した
結果を表１および第１図ないし第３図に示す。Table 1 and FIGS. 1 to 3 show the results of measuring the electromagnetic properties of the annular samples obtained by firing these samples at 1400° C. for 3 hours in a nitrogen atmosphere.
表 １
以上の結果より、Ｖ２Ｏ，については、 ０．０１５ｗ
ｔ％までが好ましく、これを越えると電力損失は悪化す
る。Table 1 From the above results, for V2O, 0.015w
It is preferably up to t%, and if it exceeds this, power loss worsens.
以上の実施例からも明らかなように、ＳｉＯ□、ＣａＣ
０，、Ｖ２Ｏ，などの有効な副成分を加えることにより
、Ｍｎ −Ｚｎ系フェライトの電力損失を改善すること
ができる。このためこのフェライトをフライバックトラ
ンスに使用することにより、発熱を抑制することが可能
となり、信頼性の向上、小型軽量化を実現することがで
きる。As is clear from the above examples, SiO□, CaC
By adding effective subcomponents such as 0, V2O, etc., the power loss of Mn-Zn ferrite can be improved. Therefore, by using this ferrite in a flyback transformer, it is possible to suppress heat generation, improve reliability, and realize a reduction in size and weight.
第１図はＶ！ ０．の添加量と電力損失の関係を示すグ
ラフ、第２図はＶ２Ｏ，とＣａＣ０，の添加量と電力損
失の関係を示すグラフ、第３図・はＳｉｎ、とＣａＣ０
，の添加量と電力損失の関係を示すグラフで、第１図な
いし第３図の測定条件はいずれも２５ｋＨｚ、 ２００
０Ｇａｕｓｓである。Figure 1 shows V! 0. Figure 2 is a graph showing the relationship between the added amount of V2O, CaC0, and power loss, Figure 3 is a graph showing the relationship between the added amount of V2O, and CaC0, and power loss.
, is a graph showing the relationship between the added amount of
It is 0 Gauss.
Claims (1)
ｏｌ％およびＭｎＯ３７〜４５ｍｏｌ％を主成分とし、
これにＳｉＯ＿２０．００５〜０．０１５ｗｔ％、Ｃａ
ＣＯ＿３０．１〜０．３ｗｔ％およびＶ＿２Ｏ＿５０．
００５〜０．０２０ｗｔ％を副成分として含有すること
を特徴とする低損失酸化物磁性材料。Fe_2O_352~60mol%, ZnO4~13m
ol% and MnO37 to 45 mol% as main components,
To this, SiO_20.005~0.015wt%, Ca
CO_30.1-0.3wt% and V_2O_50.
A low-loss oxide magnetic material characterized by containing 0.005 to 0.020 wt% as a subcomponent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62295559A JPH01136309A (en) | 1987-11-24 | 1987-11-24 | Low loss oxide magnetic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62295559A JPH01136309A (en) | 1987-11-24 | 1987-11-24 | Low loss oxide magnetic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01136309A true JPH01136309A (en) | 1989-05-29 |
Family
ID=17822209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62295559A Pending JPH01136309A (en) | 1987-11-24 | 1987-11-24 | Low loss oxide magnetic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01136309A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108358632A (en) * | 2018-05-24 | 2018-08-03 | 电子科技大学 | A kind of high Q × f values microwave dielectric material of sintered at ultra low temperature and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5963705A (en) * | 1982-09-29 | 1984-04-11 | Hitachi Metals Ltd | Transformer core |
| JPS61252606A (en) * | 1985-05-01 | 1986-11-10 | Tohoku Metal Ind Ltd | Magnetic material of low-loss oxide |
-
1987
- 1987-11-24 JP JP62295559A patent/JPH01136309A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5963705A (en) * | 1982-09-29 | 1984-04-11 | Hitachi Metals Ltd | Transformer core |
| JPS61252606A (en) * | 1985-05-01 | 1986-11-10 | Tohoku Metal Ind Ltd | Magnetic material of low-loss oxide |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108358632A (en) * | 2018-05-24 | 2018-08-03 | 电子科技大学 | A kind of high Q × f values microwave dielectric material of sintered at ultra low temperature and preparation method thereof |
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