JP2009200428A - Layered product, and its manufacturing method - Google Patents
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本発明は、磁性積層体およびその製造方法に関し、特に、磁性材料からなる薄板と樹脂を用いて作製した磁性積層体であって、磁気応用製品、例えば、チョークコイル、高周波トランス、低周波トランス、リアクトル、パルストランス、昇圧トランス、ノイズフィルタ変圧器用トランス等、磁気センサ、磁気ヘッド、電磁気シ−ルド、電波吸収体、モ−タ、磁気ディスク、磁気応用搬送システム、マグネット、プリント配線基板、等に好適に用いられる磁性積層体およびその製造方法に関する。 The present invention relates to a magnetic laminate and a method for manufacturing the same, and in particular, a magnetic laminate produced using a thin plate made of a magnetic material and a resin, and a magnetic application product such as a choke coil, a high-frequency transformer, a low-frequency transformer, For reactors, pulse transformers, step-up transformers, transformers for noise filter transformers, etc., magnetic sensors, magnetic heads, electromagnetic shields, radio wave absorbers, motors, magnetic disks, magnetic application transport systems, magnets, printed wiring boards, etc. The present invention relates to a magnetic laminate suitably used and a method for producing the same.
近年、ノートパソコンや、ＰＤＡ等の携帯機器等の普及、及び携帯機器の高性能化に伴い、携帯機器の小型化、薄型化、高効率化が求められている。このような機器において数多く使用されるトランス機器においては、さらなる高効率化および、さらなる薄型化が強く望まれている。 In recent years, with the spread of portable devices such as notebook personal computers and PDAs and the enhancement of the performance of portable devices, there has been a demand for smaller, thinner, and more efficient portable devices. In transformer devices that are frequently used in such devices, further higher efficiency and thinner thickness are strongly desired.
従来の小型のトランス機器に使用される磁性コアは、渦電流損失を減らすため、フェライト系の材料が用いられてきた。しかしながら、更なる薄型化を達成するためにフェライト系の材料よりも飽和磁束密度の大きな材料が望まれており、ナノ結晶の組織を持つ軟磁性材料を用いた磁性コアが使用されている。ところで、ナノ結晶の軟磁性材料を用いた磁気コアの製造方法をみると、軟磁性薄帯から打抜き、エッチングなどによって加工された薄板を積層し、それぞれ磁性材料の最適熱処理を行った後、これらに樹脂を含浸・硬化して作製している。
また、特許文献１や特許文献２などには、軟磁性薄帯に樹脂を塗布してアンテナなどの積層体とすることが記載されている。
Ferrite-based materials have been used for magnetic cores used in conventional small transformer devices in order to reduce eddy current loss. However, in order to achieve further reduction in thickness, a material having a saturation magnetic flux density larger than that of a ferrite-based material is desired, and a magnetic core using a soft magnetic material having a nanocrystalline structure is used. By the way, when looking at the manufacturing method of the magnetic core using the soft magnetic material of the nanocrystal, after laminating thin plates punched out from the soft magnetic ribbon and processed by etching, etc., each of these was subjected to the optimal heat treatment of the magnetic material. It is made by impregnating and curing resin.
Patent Documents 1 and 2 describe that a soft magnetic ribbon is coated with a resin to form a laminated body such as an antenna.
このように、従来においては、磁性材料を用いて製品を作製する場合には、いずれも最適熱処理を施した後に磁性材料の樹脂による含浸・熱硬化プロセスを経ているので、最適熱処理によって良好な磁気特性を持つようになった磁性材料であっても、その後の含浸・熱硬化プロセスによって、透磁率や鉄損等の磁気特性が劣化してしまうという問題がある。 Thus, in the past, when making a product using a magnetic material, the magnetic material is subjected to an impregnation / thermosetting process with the resin after being subjected to the optimum heat treatment. Even a magnetic material having properties has a problem that magnetic properties such as magnetic permeability and iron loss are deteriorated by the subsequent impregnation / thermosetting process.
したがって、本発明の主な目的は、ナノ結晶の組織を持つ軟磁性薄帯を用いて磁気応用製品となる積層体を製造する際に、磁気特性が劣化するのを防止または抑制できる積層体およびその製造方法を提供することにある。 Therefore, the main object of the present invention is to provide a laminate capable of preventing or suppressing the deterioration of magnetic properties when producing a laminate as a magnetic application product using a soft magnetic ribbon having a nanocrystalline structure. It is in providing the manufacturing method.
このような課題を解決するために、磁気応用製品となる軟磁性薄帯の積層体を製造するプロセスについて、従来からの樹脂の含浸・熱硬化プロセス、接着剤塗布プロセス等の加工プロセス等を見直した。その結果、軟磁性薄帯に磁性材料のナノ結晶化の熱処理に耐える耐熱性樹脂を用いて積層体を作成することにより、耐熱性樹脂を付与した後に軟磁性薄帯の熱処理を行えるようになる。その結果、熱硬化、切断等の歪みがかかる接着工程を先に行った後に、応力フリーの状態で軟磁性薄帯のナノ結晶化熱処理を行えるので、磁気特性を改善することができるようになり、製品の歩留まりや生産効率を向上させ、製造コストを減少させるに到った。 In order to solve these problems, we have reviewed the conventional processes such as resin impregnation / thermosetting process and adhesive coating process for the manufacturing process of soft magnetic ribbons, which are magnetic products. It was. As a result, it is possible to heat-treat the soft magnetic ribbon after applying the heat-resistant resin by making a laminate using a heat-resistant resin that can withstand the heat treatment for nanocrystallization of the magnetic material on the soft magnetic ribbon. . As a result, after performing the bonding process that is subject to distortion such as thermosetting and cutting, the nanocrystalline heat treatment of the soft magnetic ribbon can be performed in a stress-free state, so that the magnetic properties can be improved. This has led to improved product yield and production efficiency and reduced manufacturing costs.
本発明は、このような知見に基づくものであり、本発明の第１の態様によれば、ナノ結晶の組織を有する軟磁性薄帯が積層された積層体であって、薄帯間に樹脂が硬化されて有機ＳＯＧ膜になっていることを特徴とするものである。
樹脂としては、有機ＳＯＧ膜を得るための前駆体であり、硬化反応により有機ＳＯＧ膜を得ることが出来るポリシロキサン系の樹脂を用いることができる。樹脂の厚さは０．５〜５μｍとすることが好ましい。
The present invention is based on such knowledge, and according to the first aspect of the present invention, a laminated body in which soft magnetic ribbons having a nanocrystalline structure are laminated, and a resin is provided between the ribbons. Is cured to be an organic SOG film.
As the resin, a polysiloxane resin which is a precursor for obtaining an organic SOG film and can obtain an organic SOG film by a curing reaction can be used. The thickness of the resin is preferably 0.5 to 5 μm.
ナノ結晶化のための熱処理を、樹脂の硬化後や圧着工程後に行うことができるため、薄帯に応力が印加され無い状態で熱処理を施すことができ、歪によって角形性が低下することなく好ましい磁気特性を持つ積層体を製造できる。この積層体は、占積率が８０％以上であって直流磁化特性測定装置での印加磁界８０A/mにおける磁束密度Ｂ（８０）と飽和磁束密度Ｂｓの比であるＢ（８０）／Ｂｓが、９０％以上である。 Since the heat treatment for nanocrystallization can be performed after the resin is cured or after the pressure-bonding step, the heat treatment can be performed in a state where no stress is applied to the ribbon, and it is preferable that the squareness is not deteriorated due to strain. A laminate with magnetic properties can be manufactured. This laminate has a space factor of 80% or more, and B (80) / Bs, which is the ratio of the magnetic flux density B (80) to the saturation magnetic flux density Bs at an applied magnetic field of 80 A / m in the DC magnetization characteristic measuring apparatus. 90% or more.
この角形性の良い積層体の製造方法として、ナノ結晶化される前のアモルファス状態の軟磁性薄帯にポリシロキサンベースの樹脂を塗布し、前記軟磁性薄帯を積層して結晶化温度以下の温度で熱処理することにより前記樹脂を硬化させて前記軟磁性薄帯同士を圧着し、その後、応力をかけない状態で結晶化温度以上の熱処理を施すことにより前記軟磁性薄帯をナノ結晶化させる工程を用いることができる。熱処理の際に応力を印加すると印加方向に結晶磁気異方性が誘導されるため、磁気特性が低下する。 As a method for producing a laminate with good squareness, a polysiloxane-based resin is applied to an amorphous soft magnetic ribbon before being nanocrystallized, and the soft magnetic ribbon is laminated to a temperature lower than the crystallization temperature. The resin is cured by heat treatment at a temperature and the soft magnetic ribbons are pressure-bonded to each other, and then the soft magnetic ribbon is nanocrystallized by applying a heat treatment at a temperature higher than the crystallization temperature without applying stress. A process can be used. When stress is applied during the heat treatment, magnetocrystalline anisotropy is induced in the direction of application, so that the magnetic properties deteriorate.
また、ナノ結晶化される前のアモルファス状態の軟磁性薄帯にポリシロキサンベースの樹脂を塗布し、前記軟磁性薄帯を積層して結晶化温度以下で熱処理することにより前記軟磁性薄帯同士を仮接着し、仮接着した前記軟磁性薄帯に打抜き加工を施し、この打抜き加工を施した前記軟磁性薄帯同士を仮接着した時よりも高温でかつ結晶化温度以下で熱処理することにより前記軟磁性薄帯同士を圧着した後、応力をかけない状態で結晶化温度以上の熱処理を施すことにより加工による歪を緩和することが可能である。 In addition, by applying a polysiloxane-based resin to the amorphous soft magnetic ribbon before being nanocrystallized, laminating the soft magnetic ribbon and heat-treating it at a temperature below the crystallization temperature, the soft magnetic ribbons Is subjected to a punching process on the soft magnetic ribbon that has been temporarily bonded, and heat treatment is performed at a temperature higher than that when the soft magnetic ribbons subjected to the punching process are temporarily bonded to each other at a temperature lower than the crystallization temperature. After the soft magnetic ribbons are pressure-bonded to each other, it is possible to alleviate the strain caused by processing by applying a heat treatment at a temperature equal to or higher than the crystallization temperature without applying stress.
ナノ結晶化の熱処理は５００℃以上６００℃以下とすることが好ましい。一方、樹脂の硬化や熱圧着の際の温度は５００℃未満とすることが好ましい。熱処理温度が、５００℃以下では、軟磁気特性を得るためのナノ結晶組織を形成することが困難であり、また６００℃以上では、粒成長により、保持力が増大する。 The heat treatment for nanocrystallization is preferably 500 ° C. or higher and 600 ° C. or lower. On the other hand, it is preferable that the temperature at the time of resin curing and thermocompression bonding is less than 500 ° C. When the heat treatment temperature is 500 ° C. or lower, it is difficult to form a nanocrystalline structure for obtaining soft magnetic properties. When the heat treatment temperature is 600 ° C. or higher, the retention force increases due to grain growth.
本発明によれば、熱処理により微細結晶を析出する軟磁性金属薄帯を用いた積層体において、軟磁性薄帯にポリシロキサンベースの耐熱性樹脂を付与することで耐候性の優れた積層体を得ることができる。また、さらに、熱処理条件に適した接着剤を用いることで、ナノ結晶化する前の積層体を応力フリーの状態で熱処理することができ、
従来は困難であった熱処理温度に耐えうる積層体を得ることができ磁気特性、特に角形性や占積率が高く飽和磁束密度の高い積層体を得ることができる。また、従来の含浸硬化プロセスや接着剤塗布プロセスを不要にすることによる製造コストの低減・生産性の向上などの大きな効果が得られ実用に供することができる。
According to the present invention, in a laminate using a soft magnetic metal ribbon that precipitates fine crystals by heat treatment, a laminate having excellent weather resistance can be obtained by applying a polysiloxane-based heat-resistant resin to the soft magnetic ribbon. Obtainable. Furthermore, by using an adhesive suitable for the heat treatment conditions, the laminate before nanocrystallization can be heat treated in a stress-free state,
A laminate capable of withstanding the heat treatment temperature, which has been difficult in the past, can be obtained, and a laminate having high magnetic properties, particularly squareness and space factor, and a high saturation magnetic flux density can be obtained. In addition, the conventional impregnation curing process and the adhesive coating process are not required, and thus great effects such as reduction in manufacturing cost and improvement in productivity can be obtained and put to practical use.
本発明におけるナノ結晶の組織を有する軟磁性薄帯とは、例えば、特開平１−１５６４５１号に開示されるような、(Ｆｅ・Ｃｏ）ＣｕＢＳｉＭ系（Ｍ＝Ｎｂ，Ｗ，Ｔａ，Ｚｒ，Ｈｆ，Ｔｉ，Ｍｏ）などの合金組織からなり、組織の５０％以上が１０００Å以下の微細な組織を有するものを指す。
これらは、溶湯をロール冷却により超急例して、アモルファス状態の薄帯とした後、結晶化温度以上で熱処理することで上記の微細な組織を持つようにナノ結晶化を行うものである。
The soft magnetic ribbon having a nanocrystalline structure in the present invention is, for example, (Fe · Co) CuBSiM type (M = Nb, W, Ta, Zr, Hf) as disclosed in JP-A-1-156451. , Ti, Mo) and the like, and 50% or more of the structure has a fine structure of 1000 mm or less.
In these, the molten metal is supercooled by roll cooling to form an amorphous ribbon, and then subjected to heat treatment at a temperature equal to or higher than the crystallization temperature to perform nanocrystallization so as to have the fine structure described above.
また、軟磁性薄帯に塗布するポリシロキサン系樹脂とは、主鎖としてケイ素−酸素結合が繰り返す高分子鎖構造を有しており、それに炭素を持つ有機成分が結合しているものを指す。このケイ素−酸素結合が極低温から高温まで、幅広い温度域で柔軟性を保つものである。樹脂を塗布する際の軟磁性薄帯はアモルファス状態である。
このポリシロキサン系樹脂を熱処理して硬化することにより。有機ＳＯＧ膜が得られる。有機ＳＯＧ膜とは、ケイ素化合部を有機溶剤に溶解した溶液を被覆媒体に塗布した後に焼成し、これにより主に生成されるＳｉＯ２の被膜を指す。有機ＳＯＧ膜は、（化１）で表される繰り返し構造を有する。なお、（化１）中に示すＲは、アルキル基を示している。
軟磁性薄帯の結晶化温度未満（１００〜５００℃）でこのように構造を変化させることができる。
In addition, the polysiloxane resin applied to the soft magnetic ribbon refers to a polymer chain structure in which silicon-oxygen bonds are repeated as a main chain, and an organic component having carbon bonded thereto. This silicon-oxygen bond maintains flexibility in a wide temperature range from a very low temperature to a high temperature. The soft magnetic ribbon when the resin is applied is in an amorphous state.
By heat-treating and curing this polysiloxane resin. An organic SOG film is obtained. The organic SOG film refers to a coating of SiO2 mainly produced by applying a solution in which a silicon compound portion is dissolved in an organic solvent to a coating medium and baking it. The organic SOG film has a repeating structure represented by (Chemical Formula 1). In addition, R shown in (Chemical Formula 1) represents an alkyl group.
The structure can be changed in this way below the crystallization temperature of the soft magnetic ribbon (100 to 500 ° C.).
本発明において、ポリシロキサン系樹脂は、軟磁性薄帯の片面もしくは両面に塗布される。この場合、塗布する面に均一にむらなく塗膜されることが好ましいが、磁気コア等の軟磁性薄帯の積層体を用いた種々の磁気応用製品としての機械的強度が得られるように付与されていればよく、部分的に付与されていてもよい。
軟磁性薄帯が積層された磁性基材を作製する場合は、多層コ−ティング方法あるいは熱プレス方法、または熱ロ−ル法、高周波溶着法などで積層することで積層構造を自由に作製することができる。
In the present invention, the polysiloxane resin is applied to one side or both sides of the soft magnetic ribbon. In this case, it is preferable that the coated surface is evenly and uniformly coated, but it is applied so as to obtain mechanical strength as various magnetic application products using a laminate of soft magnetic ribbons such as a magnetic core. It may be provided and may be provided partially.
When producing a magnetic base material on which soft magnetic ribbons are laminated, a laminated structure can be freely produced by laminating by a multilayer coating method, a hot press method, a thermal roll method, a high frequency welding method, or the like. be able to.
多層コ−ティング方法では、アモルファス状態の軟磁性薄帯の原反からロ−ルコ−タなどのコ−ティング装置を用いて軟磁性薄帯上に液状樹脂の塗膜を作りこれを乾燥させて軟磁性薄帯に耐熱性樹脂を付与する方法で作製することができる。軟磁性薄帯フープから引き出された軟磁性薄帯上に、コーティング用ロールでコーティング用液状樹脂が塗布されて液状樹脂の塗膜が形成され、その後、液状樹脂の塗膜が形成された複数の軟磁性薄帯がヒートロールで貼り合わせられ、積層体が送りロールで送出される。この状態では、樹脂は耐熱性樹脂の前駆体の状態であり、十分な耐熱構造とはなっていないが、磁性基材は、脆化しておらず、加工性が十分にある状態である。この状態で任意の形状の加工することも可能である。その後、任意の高さに積層し、樹脂を硬化させることによって、積層体を得ることが出来る。その後、熱処理を行うことで、所定の磁気特性が発現する。また、軟磁性薄帯に耐熱性樹脂を付与した多層構造の磁性基材を作製する場合には、上記多層コ−ティング方法に加えて、単一または多層コ−ティング基材を加圧、例えば熱プレスや熱ロ−ルなどにより加圧して積層することができる。熱プレス法では、軟磁性薄帯に耐熱性樹脂を付与したコーティング基材を複数積層したものを、熱プレスで加圧して樹脂を硬化させるとともに接着して積層体を形成し、その後に熱処理を施すことで、所定の磁気特性を発現させることが出来る。 In the multi-layer coating method, a liquid resin coating film is formed on a soft magnetic ribbon using a coating device such as a roll coater from an amorphous soft magnetic ribbon and dried. It can be produced by applying a heat-resistant resin to the soft magnetic ribbon. On the soft magnetic ribbon drawn from the soft magnetic ribbon hoop, a coating liquid resin is applied with a coating roll to form a liquid resin coating, and then a plurality of liquid resin coatings are formed. The soft magnetic ribbon is bonded by a heat roll, and the laminate is sent by a feed roll. In this state, the resin is a precursor of a heat-resistant resin and does not have a sufficient heat-resistant structure, but the magnetic substrate is not brittle and has sufficient workability. It is also possible to process an arbitrary shape in this state. Then, it can laminate | stack to arbitrary height and a laminated body can be obtained by hardening resin. Thereafter, predetermined magnetic properties are exhibited by performing heat treatment. When a magnetic base material having a multilayer structure in which a heat-resistant resin is applied to a soft magnetic ribbon, in addition to the multilayer coating method described above, a single or multilayer coating base material is pressurized, for example, It can be laminated by pressing with a hot press or a heat roll. In the hot press method, a laminate in which a plurality of coating base materials each having a heat-resistant resin added to a soft magnetic ribbon is pressed with a hot press to cure and bond the resin to form a laminate, followed by heat treatment. By applying, predetermined magnetic characteristics can be expressed.
なお、加圧時の温度は耐熱性樹脂の種類により異なるが、概ね、塗布膜の流動する温度近傍で積層接着することが好ましい。 In addition, although the temperature at the time of pressurization changes with kinds of heat resistant resin, it is preferable to laminate and bond in the vicinity of the temperature at which the coating film flows.
耐熱性樹脂を付与すると共に、目的とする磁性応用製品に使用されるように所望の形状にした軟磁性薄帯、例えば巻回または積層した軟磁性薄帯に、その軟磁性薄帯の磁気特性を発現させるためのナノ結晶化熱処理が施される。通常、ナノ磁性材料の熱処理温度は、少なくと５００℃以上の高温であるため、耐熱性樹脂は、軟磁性薄帯の最適な磁気特性を発現させるために必要な熱処理温度に十分に耐える耐熱性の高い樹脂を選択する必要がある。例えば、ポリイミドなどの樹脂では５００℃以上の熱処理温度では分解が著しいので使用するのが困難である。
それに対して、有機ＳＯＧ材料は、塗布した時点では、ポリシロキサン樹脂からなる膜であるが、４００℃以上での硬化処理を施すことによってＳｉＯ２化し、５００℃以上の熱処理にも耐え得る膜となり、熱処理後も軟磁性薄帯との接着強度が保たれるとともに、軟磁性薄帯の最適熱処理温度で熱処理することができるため優れた磁気特性を示すことができる。
Applying heat-resistant resin and magnetic properties of soft magnetic ribbons to soft magnetic ribbons that are shaped as desired for use in the desired magnetic application products, such as wound or laminated soft magnetic ribbons A nanocrystallization heat treatment is performed to develop the. Usually, the heat treatment temperature of nanomagnetic materials is at least 500 ° C or higher, so that the heat-resistant resin has sufficient heat resistance to withstand the heat treatment temperature necessary to develop the optimum magnetic properties of the soft magnetic ribbon. It is necessary to select a resin having a high value. For example, a resin such as polyimide is difficult to use because it decomposes significantly at a heat treatment temperature of 500 ° C. or higher.
On the other hand, the organic SOG material is a film made of a polysiloxane resin at the time of application, but it is converted into SiO2 by applying a curing treatment at 400 ° C. or higher and can withstand heat treatment at 500 ° C. or higher. Even after the heat treatment, the adhesive strength with the soft magnetic ribbon is maintained, and since the heat treatment can be performed at the optimum heat treatment temperature of the soft magnetic ribbon, excellent magnetic properties can be exhibited.
（実施例１）
以下、本発明の実施例について示す。
軟磁性薄帯として、原子％で、ＦｅbalＣｕ１Ｓｉ１３Ｂ８Ｎｂ４の合金組成からなるアモルファス状態の非晶質金属薄帯を使用した。薄帯の幅は約５０ｍｍ，厚みは約１８μｍである。この薄帯に約１．７ｍＰａ・ｓの粘度のポリシロキサン樹脂溶液を塗布し、１００℃で乾燥硬化させ、薄帯の両面に約１μｍの耐熱性樹脂前駆体を形成した。その後、この樹脂が塗布された軟磁性薄帯を磁心の断面形状に打抜いた後に、熱圧着用の治具内に厚さ１ｍｍの高さに積上げた。この積上げたものを４５０℃×３０分間で熱圧着することによって、一体化して本発明の積層体とした。
次に、この積層体を圧力の掛からない条件で５３０℃×１ｈの熱処理を行ったその結果、良好な直流ＢＨ特性を得ていることを確認した。
また、比較として、ポリシロキサン樹脂以外の樹脂を用いたものでは、樹脂の耐熱性が不足するために軟磁性薄帯を積層後にナノ結晶化のための熱処理を行った際に、熱処理温度により分解してしまい、積層体とすることが出来なかった。
Example 1
Examples of the present invention will be described below.
As the soft magnetic ribbon, an amorphous metal ribbon in an amorphous state made of an alloy composition of Fe bal Cu 1 Si 13 B 8 Nb 4 at atomic% was used. The ribbon has a width of about 50 mm and a thickness of about 18 μm. A polysiloxane resin solution having a viscosity of about 1.7 mPa · s was applied to the ribbon and dried and cured at 100 ° C. to form a heat-resistant resin precursor of about 1 μm on both sides of the ribbon. Thereafter, the soft magnetic ribbon coated with this resin was punched into a cross-sectional shape of the magnetic core, and then piled up to a height of 1 mm in a thermocompression bonding jig. The stacked product was integrated by thermocompression bonding at 450 ° C. for 30 minutes to obtain the laminate of the present invention.
Next, as a result of heat-treating this laminated body at 530 ° C. × 1 h under conditions where no pressure was applied, it was confirmed that good direct current BH characteristics were obtained.
Also, as a comparison, when a resin other than polysiloxane resin is used, the heat resistance of the resin is insufficient, so when heat treatment for nanocrystallization is performed after laminating the soft magnetic ribbon, it decomposes depending on the heat treatment temperature. As a result, the laminate could not be formed.
（実施例２）
実施例１と同じアモルファス状態の軟磁性薄帯を使用し、同様にポリシロキサン樹脂溶液を塗布した。非晶質金属薄帯はロールから連続して引きだし、この引き出した軟磁性薄帯にコーティング用ロールでこのポリシロキサン樹脂を連続して塗布した。同様に複数の軟磁性薄帯５本を同時に引きだし、１５０℃に加熱したヒートロールで貼り合わせることで磁性基体を得た。ポリシロキサン樹脂溶液は加熱されて約１μｍの耐熱性樹脂前駆体となっている。
この磁性基体を磁心形状に打抜き加工を行った。この打抜き加工を行った磁性基体を熱圧着用の治具内に厚さ１ｍｍの高さに積上げた。この積上げたものを４５０℃×３０分間で熱圧着することによって、一体化して本発明の積層体とした。
次に、この積層体を圧力の掛からない条件で５３０℃×１ｈの熱処理を行った。その結果、良好な直流ＢＨ特性を得ていることを確認した。
(Example 2)
The same amorphous soft magnetic ribbon as in Example 1 was used, and a polysiloxane resin solution was similarly applied. The amorphous metal ribbon was continuously drawn from the roll, and the polysiloxane resin was continuously applied to the drawn soft magnetic ribbon with a coating roll. Similarly, a plurality of soft magnetic ribbons were pulled out at the same time and bonded together with a heat roll heated to 150 ° C. to obtain a magnetic substrate. The polysiloxane resin solution is heated to become a heat-resistant resin precursor of about 1 μm.
This magnetic substrate was punched into a magnetic core shape. The punched magnetic substrate was stacked in a thermocompression bonding jig to a height of 1 mm. The stacked ones were integrated by thermocompression bonding at 450 ° C. for 30 minutes to obtain the laminate of the present invention.
Next, this laminated body was heat-treated at 530 ° C. × 1 h under conditions where no pressure was applied. As a result, it was confirmed that good DC BH characteristics were obtained.
（参考例１）
実施例１と同様に軟磁性薄帯にポリシロキサン樹脂溶液を塗布し、１００℃で乾燥硬化させ、薄板の両面に約１μｍの耐熱性樹脂前駆体を形成後、積層磁心形状に打抜いたものを治具内にセットし、１ｍｍの高さに積上げ、５３０℃×１ｈの条件で熱圧着したところ、一体化した磁性積層板を得ることが出来たが、その磁気特性は、熱処理時の押し圧の効果により、Ｂ８０の値を小さくすることが出来た。
(Reference Example 1)
As in Example 1, a polysiloxane resin solution was applied to a soft magnetic ribbon, dried and cured at 100 ° C., formed a heat-resistant resin precursor of about 1 μm on both sides of the thin plate, and then punched into a laminated magnetic core shape Was placed in a jig and stacked to a height of 1 mm and thermocompression bonded under the conditions of 530 ° C. × 1 h. As a result, an integrated magnetic laminate was obtained. Due to the effect of pressure, the value of B80 could be reduced.
Claims (6)
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| WO2019208651A1 (en) * | 2018-04-25 | 2019-10-31 | 日立金属株式会社 | Amorphous metal ribbon, method for processing same, and method for producing laminate |
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| JP2016009710A (en) * | 2014-06-23 | 2016-01-18 | Ｊｆｅスチール株式会社 | Laminated electromagnetic steel sheet and method for producing the same |
| WO2017150441A1 (en) * | 2016-02-29 | 2017-09-08 | 日立金属株式会社 | Multilayer block core, multilayer block, and method for producing multilayer block |
| JPWO2017150441A1 (en) * | 2016-02-29 | 2018-12-27 | 日立金属株式会社 | Laminated block core, laminated block, and laminated block manufacturing method |
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| WO2019208651A1 (en) * | 2018-04-25 | 2019-10-31 | 日立金属株式会社 | Amorphous metal ribbon, method for processing same, and method for producing laminate |
| JPWO2019208651A1 (en) * | 2018-04-25 | 2021-05-27 | 日立金属株式会社 | Amorphous metal strip, its processing method, and method of manufacturing a laminate |
| JP7219869B2 (en) | 2018-04-25 | 2023-02-09 | 株式会社プロテリアル | Amorphous metal strip, processing method thereof, and method for manufacturing laminate |
| CN112350075A (en) * | 2020-10-19 | 2021-02-09 | 内蒙古大学 | Multilayer composite material with strong microwave absorption in GHz interval and preparation method thereof |
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