JP3644248B2 - Iron-based amorphous alloy for transformers with excellent soft magnetic properties - Google Patents
Iron-based amorphous alloy for transformers with excellent soft magnetic properties Download PDFInfo
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- 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
Description
【０００１】
【発明の属する技術分野】
この発明は、優れた軟磁気特性を有する安価なトランス用鉄基アモルファス合金、特にFe−Ｂ−Si系アモルファス合金に関するものである。
【０００２】
【従来の技術】
軟磁気特性に優れたアモルファス合金として、種々のFe−Ｂ−Si系合金組成が知られている。
例えば、Chenらの米国特許第4300950 号明細書には、80〜84原子％の鉄、12〜15原子％のボロンおよび１〜８原子％の珪素を含む組成になるアモルファス合金が開示されている。また、特開昭57−116750号公報には、原子％で75〜78.5％の鉄、11〜21％のボロンおよび４〜10.5％の珪素よりなるアモルファス合金が開示されている。
このように、従来知られているFe−Ｂ−Si系アモルファス合金は、ほとんどがボロンを10原子％以上の範囲で含有するものであった。
【０００３】
一方、ボロンを10原子％以下で含有するFe−Ｂ−Si系アモルファス合金に関する出願としては、特開昭49-91014号公報があるが、これには機械的高強度等の特性に関する記述はあるものの、磁性に関する記述は飽和磁化とキュリー温度の記述があるのみで、鉄損値はおろか軟磁気特性に関する記述も見られない。しかも、その飽和磁化について記載されている実施例は、鉄の含有量が80〜86原子％という比較的高い鉄含有組成についてのものである。
【０００４】
その他、特開昭57−145964号公報および特開昭58-42751号公報には、Ｃを経年変化の安定化および非晶質形成能の改善を目的として添加したものが、特開昭61−136660号公報には、表面処理性の改善を目的としてMnを添加したものが、特開昭62−192561号公報には、加工性の改善を目的としてCr, Mo, Ta, Mn, Ni, Ｖ，NbおよびＷのうちから選んだ一種または二種を添加したものが、特開昭58−210154号公報には、鋳造性の改善を目的としてCrを添加したものが、特開平８−193252号公報には、表面粗度の改善を目的としてＰを添加したものが、さらに特願平９-16396号明細書には、低ボロン組成における磁気特性を改善する目的で高射出圧力で製板を行う技術がそれぞれ開示されている。
しかしながら、これらの技術はいずれも、ボロンを６原子％以上含む組成に関するものであり、さらにボロン含有量の少ない組成について、実用上十分な磁気特性を付与することについては報告されていない。
【０００５】
【発明が解決しようとする課題】
周知のとおり、ボロンは高価な元素であり、その使用量を低減できれば、その経済的効果は計り知れない。
この発明は、上記の実情に鑑み開発されたもので、従来、余儀ないものとされてきたボロン含有量の低減に伴う軟磁気特性の劣化を効果的に抑制して、ボロン量の低減にもかかわらず優れた軟磁気特性を有するトランス用の鉄基アモルファス合金を提案することを目的とする。
【０００６】
【課題を解決するための手段】
さて、発明者らは、上記の目的を達成すべく鋭意研究を重ねた結果、Fe−Ｂ−Si合金にリン（Ｐ）および炭素（Ｃ）を添加し、かつＰ量をＢ量に応じて所定の範囲に制限すると共に、鉄含有量を低減し、しかも単ロール法のリボン作製時に従来よりも格段に高い射出圧力で製板することによって、ボロン量の低減にもかかわらず、鉄損特性が有利に改善されることの知見を得た。
この発明は、上記の知見に立脚するものである。
【０００７】
すなわち、この発明の要旨構成は次のとおりである。
１．原子％で
Fe：75.0％以上、77.0％以下および
Ｃ：2.5 ％以上、3.5 ％未満
を含み、かつＢとＰとをそれぞれ、
0.5≦Ｂ＜2.5 ％の場合は 8.0≦Ｐ≦12.0％、
2.5≦Ｂ＜4.5 ％の場合は 6.0≦Ｐ≦12.0％、
4.5≦Ｂ≦6.0 ％（但し、6.0 ％を除く）の場合は ０≦Ｐ≦12.0％
の範囲で含有し、残部はSi および不可避的不純物よりなることを特徴とする軟磁気特性に優れたトランス用鉄基アモルファス合金（第１発明）。
【０００８】
２．原子％で
Fe：75.0％以上、77.0％以下および
Ｃ：1.5 ％以上、2.5 ％未満
を含み、かつＢとＰとをそれぞれ、
0.5≦Ｂ＜1.5 ％の場合は10.0≦Ｐ≦12.0％、
1.5≦Ｂ＜3.5 ％の場合は 8.0≦Ｐ≦12.0％、
3.5≦Ｂ＜4.5 ％の場合は 4.0≦Ｐ≦12.0％、
4.5≦Ｂ≦6.0 ％（但し、6.0 ％を除く）の場合は ０≦Ｐ≦12.0％
の範囲で含有し、残部はSi および不可避的不純物よりなることを特徴とする軟磁気特性に優れたトランス用鉄基アモルファス合金（第２発明）。
【０００９】
３．原子％で
Fe：75.0％以上、77.0％以下および
Ｃ：0.5 ％以上、1.5 ％未満
を含み、かつＢとＰとをそれぞれ、
2.5≦Ｂ＜4.5 ％の場合は 8.0≦Ｐ≦12.0％、
4.5≦Ｂ＜5.5 ％の場合は 2.0≦Ｐ≦12.0％、
5.5≦Ｂ≦6.0 ％（但し、6.0 ％を除く）の場合は ０≦Ｐ≦12.0％
の範囲で含有し、残部はSi および不可避的不純物よりなることを特徴とする軟磁気特性に優れたトランス用鉄基アモルファス合金（第３発明）。
【００１０】
４．上記の第１、第２または第３発明において、厚み：15〜30μm におけるアモルファス合金の鉄損値Ｗ13/50 が 0.1 W/kg 以下である軟磁気特性に優れたトランス用鉄基アモルファス合金。
【００１１】
【発明の実施の形態】
以下、この発明において、合金の成分組成を上記の範囲に限定した理由について説明する。
Fe：75.0at％以上、77.0at％以下
鉄量が75.0at％に満たないと、磁束密度が低下するためトランスの鉄芯としては不充分であり、一方77.0at％を超えるとボロン含有量が少ない場合における非晶質形成能およびキュリー点が低下するためトランス作動温度における熱的安定性が不充分となる。そこで、鉄含有量は75.0〜77.0at％の範囲に限定した。より好ましい範囲は75.0〜76.0at％である。
【００１２】
Ｃ：0.5 at％以上、3.5 at％未満
炭素は、軟磁気特性の改善とリンおよびボロンの歩留り向上に有効な元素であるが、含有量が 0.5at％に満たないとその添加効果に乏しく、一方 3.5at％以上になると薄帯の熱的安定性が低下するので、 0.5at％以上、3.5 at％未満の範囲で含有させるものとした。より好適な範囲は 0.5〜2.5 at％である。
【００１３】
Ｂ：0.5 at％以上、6.0 at％以下（但し、 6.0 at ％を除く） Ｐ：０〜12.0at％
ボロンとリンはどちらも非晶質形成に重要な元素であり、ボロンとリンの合計が少ないと非晶質化が困難となるため、炭素量を勘案しつつ、ボロンの含有量に応じて必要なリンの添加量を下記の範囲に定めることにした。
なお、高価なフェロボロンの含有量が多くなると、コスト高の問題が生じるのでボロンの含有量の上限は６at％に制限した。また、リンの添加量が多すぎると磁束密度の低下をきたすので、添加量の上限は12.0at％とした。
記
(1) Ｃ：2.5 at％以上、3.5 at％未満の時
0.5≦Ｂ＜2.5 at％の場合は 8.0≦Ｐ≦12.0at％、
2.5≦Ｂ＜4.5 at％の場合は 6.0≦Ｐ≦12.0at％、
4.5≦Ｂ≦ 6.0 at ％（但し、 6.0 at ％を除く）の場合は ０≦Ｐ≦12.0at％。
(2) Ｃ：1.5 at％以上、2.5 at％未満の時
0.5≦Ｂ＜1.5 at％の場合は10.0≦Ｐ≦12.0at％、
1.5≦Ｂ＜3.5 at％の場合は 8.0≦Ｐ≦12.0at％、
3.5≦Ｂ＜4.5 at％の場合は 4.0≦Ｐ≦12.0at％、
4.5≦Ｂ≦ 6.0 at ％（但し、 6.0 at ％を除く）の場合は ０≦Ｐ≦12.0at％。
(3) Ｃ：0.5 at％以上、1.5 at％未満の時
2.5≦Ｂ＜4.5 at％の場合は 8.0≦Ｐ≦12.0at％、
4.5≦Ｂ＜5.5 at％の場合は 2.0≦Ｐ≦12.0at％、
5.5≦Ｂ≦ 6.0 at ％（但し、 6.0 at ％を除く）の場合は ０≦Ｐ≦12.0at％。
上記した(1), (2), (3) の各場合において、Ｂ量が上限値に近い場合におけるＰ含有量の下限を０at％と定めたが、この理由は、Ｂを比較的多量に含有する場合にはそれなりの非晶質形成能が得られるので、Ｐは必ずしも含有させる必要がないからである。
【００１４】
以上、好適成分組成範囲について説明したが、この発明では、かような組成の非晶質合金薄帯を製造するに際し、特に単ロール法により製板する場合には、その射出圧力は 0.3〜0.6 kg/cm2程度とすることが重要である。
というのは、射出圧力が 0.3 kgf/cm2より小さいと磁気特性の改善効果に乏しく、一方 0.6 kgf/cm2より大きくなるとパドルブレークが生じ易くなるからである。
【００１５】
その他の製造条件については特に制限はなく、常法に従って処理すれば良い。ここに、好適製造条件を掲げると次のとおりである。
・ロール周速：24〜40 m/s
・ロール・ノズル間隔：0.1 〜0.4 mm
・ノズルスリット幅：0.3 〜1.0 mm
・ノズルスリット長さ：５〜50 mm
【００１６】
なお、この発明では、厚み：15〜30μm におけるアモルファス合金の鉄損値Ｗ13/50 を 0.1 W/kg 以下とすることが好ましく、鉄損値をこのレベルまで低減することができれば、高ボロンアモルファス合金と遜色ない特性といえる。
【００１７】
【実施例】
表１〜３に示す組成になる合金溶湯から、単ロール法を用いて厚み：20μm の非晶質合金薄帯を製造した。薄帯の製造条件は次のとおりである。
・ロール周速：30〜40 m/s
・ロール・ノズル間隔：0.1 〜0.2 mm
・ノズルスリット幅：0.5 〜0.9 mm
・ノズルスリット長さ：20 mm
・射出圧力：0.3 〜0.6 kgf/cm2
ついで、 300℃から 460℃の温度範囲で、それぞれの組成に対して最適な温度を選択し、真空中で 1600A/mの磁場を試料長手方向に印加しつつ、１時間の熱処理を施した。
かくして得られた各合金薄帯の鉄損について調べた結果を表１〜３に併記する。
【００１８】
【表１】
【表２】
【表３】
表１〜３から明らかなように、この発明に従い得られたアモルファス合金薄帯は、ボロン含有量が少ないにもかかわらず、優れた鉄損特性が得られている。
【００２２】
【発明の効果】
かくして、この発明によれば、高価な原料であるボロンの使用量を低減することによって低コストを実現できるだけでなく、鉄損値を効果的に低減させることができ、従って、トランス用鉄心材料として有用な鉄基アモルファス合金において、大幅な低価格化と特性向上の両者を同時に実現することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an inexpensive iron-based amorphous alloy for transformers having excellent soft magnetic characteristics, and more particularly to an Fe—B—Si based amorphous alloy.
[0002]
[Prior art]
Various amorphous Fe-B-Si alloy compositions are known as amorphous alloys having excellent soft magnetic properties.
For example, Chen et al U.S. Pat. No. 4,300,950 discloses an amorphous alloy having a composition comprising 80-84 atomic percent iron, 12-15 atomic percent boron, and 1-8 atomic percent silicon. . JP-A-57-116750 discloses an amorphous alloy composed of 75-78.5% iron, 11-21% boron and 4-10.5% silicon in atomic percent.
As described above, most of the conventionally known Fe—B—Si based amorphous alloys contain boron in a range of 10 atomic% or more.
[0003]
On the other hand, as an application related to Fe-B-Si amorphous alloy containing boron at 10 atomic% or less, there is JP-A-49-91014, but there is a description on characteristics such as mechanical high strength. However, the description about magnetism only describes the saturation magnetization and the Curie temperature, and neither the iron loss value nor the description about the soft magnetic characteristics. Moreover, the examples described for the saturation magnetization are for a relatively high iron-containing composition with an iron content of 80-86 atomic%.
[0004]
In addition, JP-A-57-145964 and JP-A-58-42751 add C for the purpose of stabilizing the secular change and improving the amorphous forming ability. In Japanese Patent No. 136660, Mn is added for the purpose of improving the surface treatment property, and in Japanese Patent Application Laid-Open No. 62-192561, Cr, Mo, Ta, Mn, Ni, V are used for the purpose of improving the workability. , Nb, and W are added in one or two kinds. JP-A-58-210154 discloses that Cr is added for the purpose of improving castability. In the gazette, P is added for the purpose of improving the surface roughness, and in addition, Japanese Patent Application No. 9-16396 discloses that a plate is produced at a high injection pressure for the purpose of improving the magnetic properties in a low boron composition. Each technique to perform is disclosed.
However, all of these techniques relate to a composition containing 6 atomic% or more of boron, and no practically sufficient magnetic properties have been reported for a composition having a low boron content.
[0005]
[Problems to be solved by the invention]
As is well known, boron is an expensive element, and its economic effect is immeasurable if the amount used can be reduced.
This invention has been developed in view of the above circumstances, and effectively suppresses the deterioration of soft magnetic properties associated with the reduction of boron content, which has conventionally been inevitable, and also reduces the amount of boron. The aim is to propose an iron-based amorphous alloy for transformers with excellent soft magnetic properties.
[0006]
[Means for Solving the Problems]
As a result of intensive studies to achieve the above object, the inventors have added phosphorus (P) and carbon (C) to the Fe-B-Si alloy, and the amount of P depends on the amount of B. Iron loss characteristics despite the reduction of boron content by limiting the iron content to a specified range, reducing the iron content, and making the sheet at a much higher injection pressure than before when producing a single roll ribbon. Has been found to be advantageously improved.
The present invention is based on the above findings.
[0007]
That is, the gist configuration of the present invention is as follows.
1. In atomic percent
Fe: 75.0% or more, 77.0% or less and C: 2.5% or more, less than 3.5%, and B and P,
If 0.5 ≦ B <2.5%, 8.0 ≦ P ≦ 12.0%,
If 2.5 ≦ B <4.5%, 6.0 ≦ P ≦ 12.0%,
4.5 ≦ B ≦ 6.0% (excluding 6.0%) 0 ≦ P ≦ 12.0%
An iron-based amorphous alloy for transformers excellent in soft magnetic characteristics, characterized in that the balance is comprised of Si and inevitable impurities (first invention).
[0008]
2. In atomic percent
Fe: 75.0% or more and 77.0% or less and C: 1.5% or more and less than 2.5%, and B and P,
If 0.5 ≦ B <1.5%, 10.0 ≦ P ≦ 12.0%,
If 1.5 ≦ B <3.5%, 8.0 ≦ P ≦ 12.0%,
If 3.5 ≦ B <4.5%, 4.0 ≦ P ≦ 12.0%,
4.5 ≦ B ≦ 6.0% (excluding 6.0%) 0 ≦ P ≦ 12.0%
An iron-based amorphous alloy for transformers excellent in soft magnetic properties, characterized in that the balance is comprised of Si and inevitable impurities (second invention).
[0009]
3. In atomic percent
Fe: 75.0% or more, 77.0% or less and C: 0.5% or more, less than 1.5%, and B and P,
If 2.5 ≦ B <4.5%, 8.0 ≦ P ≦ 12.0%,
If 4.5 ≦ B <5.5%, 2.0 ≦ P ≦ 12.0%,
5.5 ≦ B ≦ 6.0% (excluding 6.0%) 0 ≦ P ≦ 12.0%
An iron-based amorphous alloy for transformers excellent in soft magnetic characteristics, characterized in that the balance is comprised of Si and inevitable impurities (third invention).
[0010]
4). First described above, in the second or third invention, the thickness: the amorphous alloy in 15~30μm iron loss value W 13/50 is 0.1 W / kg or less is soft magnetic properties with excellent transformer iron-based amorphous alloy.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the reason why the component composition of the alloy is limited to the above range in the present invention will be described.
Fe: 75.0at% or more, 77.0at% or less If the iron content is less than 75.0at%, the magnetic flux density is reduced, so it is not sufficient as an iron core of a transformer. On the other hand, if it exceeds 77.0at%, the boron content is too high. When the amount is small, the amorphous forming ability and the Curie point are lowered, so that the thermal stability at the transformer operating temperature becomes insufficient. Therefore, the iron content is limited to a range of 75.0 to 77.0 at%. A more preferable range is 75.0 to 76.0 at%.
[0012]
C: Carbon of 0.5 at% or more and less than 3.5 at% is an element effective for improving soft magnetic properties and improving the yield of phosphorus and boron. However, if the content is less than 0.5 at%, the addition effect is poor. On the other hand, if it exceeds 3.5 at%, the thermal stability of the ribbon decreases, so it was included in the range of 0.5 at% or more and less than 3.5 at%. A more preferred range is 0.5 to 2.5 at%.
[0013]
B: 0.5 at% or more, 6.0 at% or less ( excluding 6.0 at %) P: 0 to 12.0 at%
Both boron and phosphorus are important elements for amorphous formation, and if the total amount of boron and phosphorus is small, it will be difficult to make amorphous, so it is necessary depending on the boron content, taking into account the carbon content. The amount of phosphorus added was determined within the following range.
When the content of expensive ferroboron increases, the problem of high cost arises, so the upper limit of boron content is limited to 6 at%. Further, since the magnetic flux density is lowered when the amount of phosphorus added is too large, the upper limit of the amount added is set to 12.0 at%.
Record
(1) When C: 2.5 at% or more and less than 3.5 at%
If 0.5 ≦ B <2.5 at%, 8.0 ≦ P ≦ 12.0 at%,
If 2.5 ≦ B <4.5 at%, 6.0 ≦ P ≦ 12.0 at%,
In the case of 4.5 ≦ B ≦ 6.0 at % ( excluding 6.0 at %) , 0 ≦ P ≦ 12.0 at%.
(2) When C: 1.5 at% or more and less than 2.5 at%
If 0.5 ≦ B <1.5 at%, 10.0 ≦ P ≦ 12.0 at%,
If 1.5 ≦ B <3.5 at%, 8.0 ≦ P ≦ 12.0 at%,
If 3.5 ≦ B <4.5 at%, 4.0 ≦ P ≦ 12.0 at%,
In the case of 4.5 ≦ B ≦ 6.0 at % ( excluding 6.0 at %) , 0 ≦ P ≦ 12.0 at%.
(3) When C: 0.5 at% or more and less than 1.5 at%
If 2.5 ≦ B <4.5 at%, 8.0 ≦ P ≦ 12.0 at%,
If 4.5 ≦ B <5.5 at%, 2.0 ≦ P ≦ 12.0 at%,
In the case of 5.5 ≦ B ≦ 6.0 at % ( excluding 6.0 at %) , 0 ≦ P ≦ 12.0 at%.
In each of the cases (1), (2) and (3) described above, the lower limit of the P content when the B content is close to the upper limit is set to 0 at%. This is because the B content is relatively large. This is because P does not necessarily need to be contained because it can provide a certain amorphous forming ability.
[0014]
The preferred component composition range has been described above. In the present invention, when an amorphous alloy ribbon having such a composition is produced, particularly when a sheet is produced by a single roll method, the injection pressure is 0.3 to 0.6. It is important to set it to about kg / cm 2 .
This is because if the injection pressure is less than 0.3 kgf / cm 2, the effect of improving the magnetic properties is poor, whereas if it exceeds 0.6 kgf / cm 2 , a paddle break is likely to occur.
[0015]
Other manufacturing conditions are not particularly limited, and may be processed according to a conventional method. Here, preferred production conditions are listed as follows.
・ Roll speed: 24-40 m / s
・ Roll / nozzle spacing: 0.1 to 0.4 mm
・ Nozzle slit width: 0.3 to 1.0 mm
・ Nozzle slit length: 5-50 mm
[0016]
In this invention, the thickness: the iron loss value W 13/50 of amorphous alloy preferably be less 0.1 W / kg at 15 to 30 [mu] m, if it is possible to reduce the iron loss value to this level, the high boron amorphous It can be said that the characteristics are comparable to alloys.
[0017]
【Example】
An amorphous alloy ribbon having a thickness of 20 μm was produced from the molten alloy having the composition shown in Tables 1 to 3 using a single roll method. The manufacturing conditions of the ribbon are as follows.
・ Roll circumferential speed: 30-40 m / s
・ Roll / nozzle spacing: 0.1 to 0.2 mm
・ Nozzle slit width: 0.5 to 0.9 mm
・ Nozzle slit length: 20 mm
・ Injection pressure: 0.3 to 0.6 kgf / cm 2
Next, an optimum temperature was selected for each composition in the temperature range of 300 ° C. to 460 ° C., and heat treatment was performed for 1 hour while applying a magnetic field of 1600 A / m in the longitudinal direction of the sample in a vacuum.
The results of examining the iron loss of each alloy ribbon thus obtained are also shown in Tables 1-3.
[0018]
[Table 1]
[Table 2]
[Table 3]
As is apparent from Tables 1 to 3, the amorphous alloy ribbon obtained according to the present invention has excellent iron loss characteristics despite the low boron content.
[0022]
【The invention's effect】
Thus, according to the present invention, not only can the cost be reduced by reducing the amount of boron, which is an expensive raw material, but also the iron loss value can be effectively reduced. In a useful iron-based amorphous alloy, it is possible to achieve both significant cost reduction and improved characteristics at the same time.
Claims (4)
Fe：75.0％以上、77.0％以下および
Ｃ：2.5 ％以上、3.5 ％未満
を含み、かつＢとＰとをそれぞれ、
0.5≦Ｂ＜2.5 ％の場合は 8.0≦Ｐ≦12.0％、
2.5≦Ｂ＜4.5 ％の場合は 6.0≦Ｐ≦12.0％、
4.5≦Ｂ≦6.0 ％（但し、6.0 ％を除く）の場合は ０≦Ｐ≦12.0％
の範囲で含有し、残部はSi および不可避的不純物よりなることを特徴とする軟磁気特性に優れたトランス用鉄基アモルファス合金。In atomic percent
Fe: 75.0% or more, 77.0% or less and C: 2.5% or more, less than 3.5%, and B and P,
If 0.5 ≦ B <2.5%, 8.0 ≦ P ≦ 12.0%,
If 2.5 ≦ B <4.5%, 6.0 ≦ P ≦ 12.0%,
4.5 ≦ B ≦ 6.0% (excluding 6.0%) 0 ≦ P ≦ 12.0%
An iron-based amorphous alloy for transformers with excellent soft magnetic characteristics, characterized in that the balance is comprised of Si and the inevitable impurities .
Fe：75.0％以上、77.0％以下および
Ｃ：1.5 ％以上、2.5 ％未満
を含み、かつＢとＰとをそれぞれ、
0.5≦Ｂ＜1.5 ％の場合は10.0≦Ｐ≦12.0％、
1.5≦Ｂ＜3.5 ％の場合は 8.0≦Ｐ≦12.0％、
3.5≦Ｂ＜4.5 ％の場合は 4.0≦Ｐ≦12.0％、
4.5≦Ｂ≦6.0 ％（但し、6.0 ％を除く）の場合は ０≦Ｐ≦12.0％
の範囲で含有し、残部はSi および不可避的不純物よりなることを特徴とする軟磁気特性に優れたトランス用鉄基アモルファス合金。In atomic percent
Fe: 75.0% or more and 77.0% or less and C: 1.5% or more and less than 2.5%, and B and P,
If 0.5 ≦ B <1.5%, 10.0 ≦ P ≦ 12.0%,
If 1.5 ≦ B <3.5%, 8.0 ≦ P ≦ 12.0%,
If 3.5 ≦ B <4.5%, 4.0 ≦ P ≦ 12.0%,
4.5 ≦ B ≦ 6.0% (excluding 6.0%) 0 ≦ P ≦ 12.0%
An iron-based amorphous alloy for transformers with excellent soft magnetic characteristics, characterized in that the balance is comprised of Si and the inevitable impurities .
Fe：75.0％以上、77.0％以下および
Ｃ：0.5 ％以上、1.5 ％未満
を含み、かつＢとＰとをそれぞれ、
2.5≦Ｂ＜4.5 ％の場合は 8.0≦Ｐ≦12.0％、
4.5≦Ｂ＜5.5 ％の場合は 2.0≦Ｐ≦12.0％、
5.5≦Ｂ≦6.0 ％（但し、6.0 ％を除く）の場合は ０≦Ｐ≦12.0％
の範囲で含有し、残部はSi および不可避的不純物よりなることを特徴とする軟磁気特性に優れたトランス用鉄基アモルファス合金。In atomic percent
Fe: 75.0% or more, 77.0% or less and C: 0.5% or more, less than 1.5%, and B and P,
If 2.5 ≦ B <4.5%, 8.0 ≦ P ≦ 12.0%,
If 4.5 ≦ B <5.5%, 2.0 ≦ P ≦ 12.0%,
5.5 ≦ B ≦ 6.0% (excluding 6.0%) 0 ≦ P ≦ 12.0%
An iron-based amorphous alloy for transformers with excellent soft magnetic characteristics, characterized in that the balance is comprised of Si and the inevitable impurities .
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| JP10097898A JP3644248B2 (en) | 1998-04-13 | 1998-04-13 | Iron-based amorphous alloy for transformers with excellent soft magnetic properties |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10097898A JP3644248B2 (en) | 1998-04-13 | 1998-04-13 | Iron-based amorphous alloy for transformers with excellent soft magnetic properties |
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| Publication Number | Publication Date |
|---|---|
| JPH11293427A JPH11293427A (en) | 1999-10-26 |
| JP3644248B2 true JP3644248B2 (en) | 2005-04-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120016655A (en) * | 2009-05-19 | 2012-02-24 | 캘리포니아 인스티튜트 오브 테크놀로지 | Tough iron-based bulk metallic glass alloys |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6416879B1 (en) | 2000-11-27 | 2002-07-09 | Nippon Steel Corporation | Fe-based amorphous alloy thin strip and core produced using the same |
| JP4402960B2 (en) | 2002-04-05 | 2010-01-20 | 新日本製鐵株式会社 | Fe-based amorphous alloy ribbon with excellent soft magnetic properties, iron core produced using the same, and master alloy for producing rapidly solidified ribbon used therefor |
| CN103348032B (en) | 2010-09-27 | 2015-09-09 | 加利福尼亚技术学院 | The based bulk metallic glasses shape alloy of toughness |
| US9708699B2 (en) | 2013-07-18 | 2017-07-18 | Glassimetal Technology, Inc. | Bulk glass steel with high glass forming ability |
| US11371108B2 (en) | 2019-02-14 | 2022-06-28 | Glassimetal Technology, Inc. | Tough iron-based glasses with high glass forming ability and high thermal stability |
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1998
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120016655A (en) * | 2009-05-19 | 2012-02-24 | 캘리포니아 인스티튜트 오브 테크놀로지 | Tough iron-based bulk metallic glass alloys |
| KR101718562B1 (en) | 2009-05-19 | 2017-03-22 | 캘리포니아 인스티튜트 오브 테크놀로지 | Tough iron-based bulk metallic glass alloys |
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| Publication number | Publication date |
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| JPH11293427A (en) | 1999-10-26 |
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