JPH1167515A - Rare earth magnet - Google Patents
Rare earth magnetInfo
- Publication number
- JPH1167515A JPH1167515A JP10167420A JP16742098A JPH1167515A JP H1167515 A JPH1167515 A JP H1167515A JP 10167420 A JP10167420 A JP 10167420A JP 16742098 A JP16742098 A JP 16742098A JP H1167515 A JPH1167515 A JP H1167515A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- rare earth
- powder
- iron
- resin
- 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
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
- H01F1/032—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 hard-magnetic materials
- H01F1/04—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 hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0578—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together bonded together
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は磁石の基本組成が
Ｒ、Ｆｅ、Ｂからなり樹脂結合法でつくられた希土類磁
石に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rare earth magnet having a basic composition of R, Fe, and B and made by a resin bonding method.
【０００２】[0002]
【従来の技術】希土類金属、鉄、ボロンからなる希土類
金属間化合物の磁石化の試みは、例えばクーン等は（Ｆ
ｅ．８２．Ｂ．１８）．９Ｒｂ．０５Ｄａ．０５の超急
冷法リボンをアニールするとｉＨｃ＝９ｋＯｅ、Ｂｒ＝
５ｋＧ、但し（ＢＨ）ｍａｘが低い。（Ｎ．Ｃ．Ｋｏｏ
ｎ他Ａｐｌｌ．Ｐｈｙｓ．Ｌｅｔｅｒ３９．（１０），
１９８１．８４０−８４２）希土類・鉄・ボロン系超急
冷アモルファスリボンは粉末状でその諸特性を測定する
ことによって磁石化の可能性を論じている。実用材料と
しての評価は見当たらない。2. Description of the Related Art Attempts to magnetize rare earth intermetallic compounds composed of rare earth metals, iron and boron have been made, for example, by Kuhn et al.
e. 82. B. 18). 9Rb. 05Da. When the super-quenched ribbon of Example 05 was annealed, iHc = 9 kOe, Br =
5 kG, but (BH) max is low. (NC Koo
n et al. Phys. Letter39. (10),
1981.840-842) Rare earth / iron / boron super-quenched amorphous ribbons are in powder form and their properties are measured to discuss the possibility of magnetizing them. No evaluation as a practical material is found.
【０００３】[0003]
【発明が解決しようとする課題】本発明は超急冷法で製
迄された、Ｒ．Ｆｅ．Ｂ粉末と結合材である有機物樹脂
（熱可塑性、熱硬化性樹脂のいずれかを用いる）からな
るボンド磁石である。SUMMARY OF THE INVENTION The present invention relates to an R.R. Fe. This is a bonded magnet made of B powder and an organic resin (using either thermoplastic or thermosetting resin) as a binder.
【０００４】従未は、超急冷法の例えばＮｄＦｅＢ、Ｐ
ｒＦｅ、ＹＦｅ、ＮｄＤｙＦｅＢ等の組成物の磁石物性
に関する研究例が主体的であった。[0004] Conventionally, the rapid quenching method such as NdFeB, P
Research examples on the magnet physical properties of compositions such as rFe, YFe, and NdDyFeB have been mainly conducted.
【０００５】また実用材料としてとらえれば基本組成が
鉄なので、大変酸化（錆）しやすい問題があった。[0005] In addition, since the basic composition is iron when considered as a practical material, there has been a problem that it is very easy to oxidize (rust).
【０００６】また、実用永久磁石としてみれば、形状の
つくりやすさ、精度、量産性、磁石性など所望の特性が
得られていない。[0006] Further, if it is considered as a practical permanent magnet, desired characteristics such as easiness of forming a shape, accuracy, mass productivity, and magnetism are not obtained.
【０００７】本発明は前記問題を解決するもので、等方
性の高性能磁石を提供することを目的とする。The present invention has been made to solve the above problems, and has as its object to provide an isotropic high-performance magnet.
【０００８】[0008]
【課題を解決するための手段】本発明における組成物
は、Ｒ．Ｆｅ．Ｂで超急冷法でつくられた微結晶からな
る粉末を用いる。その粉未の大きさは１７０μｍ以下こ
のましくは５０μｍから３μｍの範囲である。微粉末化
は、へキサン、トルエンなどの有機溶剤を加えたボール
ミル又はアトライターミルなどで行う。Means for Solving the Problems The composition according to the present invention comprises R.R. Fe. In B, a powder composed of microcrystals produced by a rapid quenching method is used. The size of the powder is 170 μm or less, preferably in the range of 50 μm to 3 μm. The pulverization is performed by a ball mill or an attritor mill to which an organic solvent such as hexane or toluene is added.
【０００９】バインダーの有機物樹脂は、熱可塑性樹
脂、熱硬化性樹脂いずれかを選択すれば良い。As the organic resin of the binder, either a thermoplastic resin or a thermosetting resin may be selected.
【００１０】熱可塑性樹脂は、ナイロン６、６６、１２
など、ＰＰ（ポリプロピレン）、ＥＶＡ、ＰＰＳ、ＰＥ
ＥＫ等を磁石粉末と共に混練機などを用いて混練物（コ
ンパウンド）をつくる。その量は、成形方式にもよる
が、１５重量％以下である。好ましくは１０％〜５％の
範囲である。一方熱硬化性樹脂は、エポキシ、ポリエス
テル、フェノール、ケイ素等の有機物樹脂が適応され
る。その配合量は最大１５％であり、成形方法によって
好ましい範囲が選定される。The thermoplastic resin is nylon 6, 66, 12
Such as PP (polypropylene), EVA, PPS, PE
A kneaded material (compound) is prepared by using a kneader or the like together with EK or the like and magnet powder. The amount is 15% by weight or less, depending on the molding method. Preferably it is in the range of 10% to 5%. On the other hand, as the thermosetting resin, an organic resin such as epoxy, polyester, phenol, and silicon is used. The compounding amount is up to 15%, and a preferable range is selected depending on a molding method.
【００１１】本発明法では、金型を用いる加圧成形法で
は、圧縮圧力が１〜７トン／ｃｍ2と比較的高圧にし
て、高密度化すなわち高性能化を目的とするので樹脂量
は、０．５〜５％が適用される。また、射出成形、押出
成形カレンダーロール成形などは、混合物の流動性が重
要になるので、樹脂は５〜１５％と多くする。In the method of the present invention, in the pressure molding method using a mold, the compression pressure is set to a relatively high pressure of 1 to 7 ton / cm 2 to increase the density, that is, to increase the performance. , 0.5-5% apply. In injection molding, extrusion calender roll molding, and the like, the fluidity of the mixture is important, so the resin content is increased to 5 to 15%.
【００１２】[0012]
【発明の実施の形態】以下に本発明の効果を具体的に実
施例に従って詳述する。BEST MODE FOR CARRYING OUT THE INVENTION The effects of the present invention will be described below in detail with reference to examples.
【００１３】（実施例−１）Ｎｄ２９．８％，Ｂ０．８
％，残部Ｆｅおよび不可避の不純物からなる組成合金を
高周波溶解炉で溶解、水冷銅ロール上に吐出し超急冷法
によってリボン状薄帯粉末を得た。その、大きさは１０
〜３０μｍであった。次に素原料は、以下の手順で実用
永久磁石材料とした。(Example 1) Nd 29.8%, B0.8
%, The balance of Fe and inevitable impurities was melted in a high-frequency melting furnace, discharged onto a water-cooled copper roll, and a ribbon-shaped ribbon powder was obtained by a super-quenching method. Its size is 10
３０30 μm. Next, the raw material was made into a practical permanent magnet material by the following procedure.
【００１４】 粉末粒度１７７μｍ以下に粉砕した。
もちろん、Ａｒガス零囲気下で、ボールミル中で行っ
た。The powder was pulverized to a particle size of 177 μm or less.
Of course, the test was performed in a ball mill under an atmosphere of no Ar gas.
【００１５】 有機溶媒のダイフロン１１３（ダイキ
ン工業製）を加えアトライターミル中で約１０分間粉砕
した。粉末の量は、１０ｋｇ、ダイフロン１１３５ｋ
ｇ、ス一チールボール２０ｋｇの量を容器内に投入して
行った。An organic solvent, Daiflon 113 (manufactured by Daikin Industries, Ltd.), was added and pulverized in an attritor mill for about 10 minutes. The amount of powder is 10kg, Daiflon 1135k
g, 20 kg of steel balls were charged into the container.
【００１６】 ＦＳＳＳ、（フィフシャーサブシーブ
サイザー）法による平均粒度を測定した。The average particle size was measured by the FSSS (Fifshire sub-sieve sizer) method.
【００１７】 バインダー（結合材）にエポキシ樹
脂、フェノール樹脂の熱硬化性樹脂を遅定、表１に示す
磁石粉末との混合比率のサンプルについて、自動混練機
にて行った。A thermosetting resin such as an epoxy resin or a phenol resin was used as a binder (binder), and a sample having a mixing ratio with the magnet powder shown in Table 1 was used in an automatic kneader.
【００１８】 金型はφ１２×１０ｌｍｍ円柱状試料
とした。The mold was a φ12 × 10 lmm cylindrical sample.
【００１９】成形圧力は表１に示す条件で行った。この
時のプレスは、一軸油圧プレスで、ダイフローティング
方式によるもので成形した。The molding pressure was set under the conditions shown in Table 1. The press at this time was a uniaxial hydraulic press and was formed by a die floating method.
【００２０】 次に成形体は、加熱焼成固化させた
が、温度は、１００〜１８０℃×１時間、Ｎ2ガス中で
行った。Next, the molded body was heated and baked and solidified, and the temperature was 100 to 180 ° C. × 1 hour in N 2 gas.
【００２１】 ＪＩＳ、Ｃ２５０１に準拠した自動自
記磁束計で、有効磁場２５ｋＯｅを加え磁気性能を測定
した。The magnetic performance was measured by applying an effective magnetic field of 25 kOe with an automatic recording magnetometer based on JIS, C2501.
【００２２】[0022]
【表１】 [Table 1]
【００２３】[0023]
【表２】 [Table 2]
【００２４】ここで比較例は、Ｓｍ（Ｃｏｂａｌ Ｃｕ
０．０７ Ｆｅ０．２ Ｚｒ０．０２）８．０組成から
なる２−１７系希土類金属間化合物磁石粉末である。本
実施例は圧縮成形法で等方性磁石をつくった例である
が、比較例に比べ高性能磁石を得られた。等方性磁石で
これだけ高性能の希土類樹脂結合磁石は知られていな
い。Here, the comparative example is Sm (Co bal Cu
A 0.07 Fe 0.2 Zr 0.02) 8.0 2-17 rare earth intermetallic compounds magnet powder having the composition. In this example, an isotropic magnet was made by a compression molding method, but a high-performance magnet was obtained as compared with the comparative example. There is no known rare earth resin-bonded magnet having such a high performance in isotropic magnets.
【００２５】これだけ磁気性能が高い等方性磁石は、多
極着磁によって、高い磁束密度を得ることができ、スピ
ーカ、モータの高性能化に極めて有効となる。An isotropic magnet having such a high magnetic performance can obtain a high magnetic flux density by multipolar magnetization, which is extremely effective for improving the performance of a speaker and a motor.
【００２６】（実施例−２）実施例１と同一組成のＮｄ
ＦｅＢ磁石粉未を用いて、射出成形によって永久磁石を
つくった。試料．形状は、φ８０×φ２５×６ｍｍのリ
ング状である。表３に製造条件と諸特性を示す。Example 2 Nd having the same composition as in Example 1
Permanent magnets were made by injection molding using FeB magnet powder. sample. The shape is a ring shape of φ80 × φ25 × 6 mm. Table 3 shows the manufacturing conditions and various characteristics.
【００２７】バインダーは、ナイロン１２を使用し磁石
粉末との混練は、２８０℃に加熱しながらスクリュー式
混練機でコンパウンドをつくった。As a binder, nylon 12 was used, and kneading with a magnet powder was made with a screw-type kneader while heating to 280 ° C.
【００２８】なお比較例の２−１７系Ｓｍ（Ｃｏ Ｃｕ
Ｆｅ Ｚｒ）合金粉末は実施例１と同様のものを使用
した。In the comparative example, the 2-17 series Sm (Co Cu
The same FeZr) alloy powder as in Example 1 was used.
【００２９】比較例と本発明法により得られた射出成形
法での比較でもやはり高い性能が得られた。In comparison between the comparative example and the injection molding method obtained by the method of the present invention, high performance was also obtained.
【００３０】[0030]
【表３】 [Table 3]
【００３１】このことは、Ｎｄ Ｆｅ Ｂ粉未の高い磁
気性能がそのまま、現出させることができた。This means that the high magnetic performance of the NdFeB powder was able to appear as it was.
【００３２】このようにリング状の磁石でも、（ＢＨ）
ｍａｘ４〜６ＭＧＯｅ級の等方性磁石を得られた。この
ように、精密複雑形状の等方性磁石の登場は、モータ、
スピーカなどの小型、高性能化に有効となるであろう。As described above, even with a ring-shaped magnet, (BH)
max4-6MGOe grade isotropic magnet was obtained. Thus, the emergence of isotropic magnets of precise complex shape
This will be effective for miniaturization and high performance of speakers and the like.
【００３３】本実施例は、ナイロン１２を用いたが、熱
可塑性の樹脂であれば、ＰＰＳ，ＰＥＥＫ，ＰＰなど同
様の効果を得られるものである。In this embodiment, nylon 12 is used. However, if a thermoplastic resin is used, similar effects such as PPS, PEEK, and PP can be obtained.
【００３４】[0034]
【発明の効果】以上述べたように本発明によれば、基本
組成が希土類金属、鉄、ボロンからなる超急冷法でつく
られた、磁石粉末と有機物樹脂からボンド型磁石は、従
未の希土類コバルト磁石に比べ高い磁気性能を有する等
方性磁石を得られた。これを用いた機器は、例えばモー
タの高出力化、小型化、ロッドレスシリンダー、スピー
カ等へ低コスト、高性能を実現できるなど多大の効果を
もたらす実用性の高い材料である。As described above, according to the present invention, a bond type magnet made of a magnet powder and an organic resin, whose basic composition is made of a rare earth metal, iron and boron by an ultra-quenching method, is an unusual rare earth element. An isotropic magnet having higher magnetic performance than a cobalt magnet was obtained. A device using this is a highly practical material that brings great effects such as high output and small size of a motor, low cost and high performance for a rodless cylinder, a speaker, and the like.
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【手続補正書】[Procedure amendment]
【提出日】平成１０年７月１５日[Submission date] July 15, 1998
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Correction target item name] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００８】[0008]
【課題を解決するための手段】本発明は、超急冷法によ
り得られ希土類金属、鉄、ボロンを含有する磁石粉末
が、有機物樹脂結合材により結合されてなり、前記磁石
粉末は、重量比で８５％以上であることを特徴とする。
また、前記鉄の一部は、コバルト、マンガン、ニッケ
ル、ニオブ、またはクロムの遷移金属で置換されてなる
ことを特徴とする。本発明における組成物は、Ｒ．Ｆ
ｅ．Ｂで超急冷法でつくられた微結晶からなる粉末を用
いる。その粉末の大きさは１７０μｍ以下、好ましくは
５０μｍから３μｍの範囲である。微粉末化は、ヘキサ
ン、トルエンなどの有機溶剤を加えたボールミル又はア
トライターミルなどで行う。According to the present invention, a magnet powder obtained by a super-quenching method and containing a rare earth metal, iron and boron is bound by an organic resin binder, and the magnet powder is contained in a weight ratio. 85% or more.
Further, a part of the iron is replaced with a transition metal of cobalt, manganese, nickel, niobium, or chromium. The composition according to the present invention comprises R.I. F
e. In B, a powder composed of microcrystals produced by a rapid quenching method is used. The size of the powder is 170 μm or less, preferably in the range of 50 μm to 3 μm. The pulverization is performed by a ball mill or an attritor mill to which an organic solvent such as hexane or toluene is added.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１７[Correction target item name] 0017
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１７】 バインダー（結合材）にエポキシ樹
脂、フェノール樹脂の熱硬化性樹脂を選定し、表１に示
す磁石粉末との混合比率のサンプルについて自動混練機
にて行った。A thermosetting resin such as an epoxy resin or a phenol resin was selected as a binder (binder), and a sample having a mixing ratio with a magnet powder shown in Table 1 was used in an automatic kneader.
Claims (2)
（Ｂ）からなり超急冷法で作られた磁石粉末を重量比で
８５％以上、残部有機物樹脂結合材からなる樹脂ボンド
（結合）法で成形して製造されたことを特徴とする希土
類磁石。1. A resin bond made of a rare earth metal (R), iron (Fe) and boron (B) and made by a super-quenching method in a weight ratio of 85% or more, and a balance of an organic resin binder. A rare earth magnet characterized by being manufactured by the method of (1).
（Ｍｎ）ニッケル（Ｎｉ）ニオブ（Ｎｂ）クロム（Ｃ
ｒ）などの遷移金属で置換した特許請求の範囲第１項に
記載の希土類磁石。2. A method according to claim 1, wherein part of said iron is cobalt (Co) manganese (Mn) nickel (Ni) niobium (Nb) chromium (C
The rare earth magnet according to claim 1, wherein the rare earth magnet is substituted with a transition metal such as r).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16742098A JP3391704B2 (en) | 1998-06-15 | 1998-06-15 | Rare earth magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16742098A JP3391704B2 (en) | 1998-06-15 | 1998-06-15 | Rare earth magnet |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7255320A Division JPH08181011A (en) | 1995-10-02 | 1995-10-02 | Rare earth magnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1167515A true JPH1167515A (en) | 1999-03-09 |
| JP3391704B2 JP3391704B2 (en) | 2003-03-31 |
Family
ID=15849377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16742098A Expired - Lifetime JP3391704B2 (en) | 1998-06-15 | 1998-06-15 | Rare earth magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3391704B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1115127A2 (en) * | 2000-01-06 | 2001-07-11 | Seiko Epson Corporation | Magnetic powder and isotropic bonded magnet |
| EP1115126A3 (en) * | 2000-01-06 | 2002-05-15 | Seiko Epson Corporation | Magnetic powder and isotropic bonded magnet |
| US6852246B2 (en) | 1999-06-11 | 2005-02-08 | Seiko Epson Corporation | Magnetic powder and isotropic bonded magnet |
| US6855265B2 (en) | 2000-01-07 | 2005-02-15 | Seiko Epson Corporation | Magnetic powder and isotropic bonded magnet |
| US6951625B2 (en) | 2000-01-07 | 2005-10-04 | Seiko Epson Corporation | Magnetic powder and isotropic bonded magnet |
| CN115466859A (en) * | 2022-09-07 | 2022-12-13 | 中国科学院赣江创新研究院 | Method for selectively leaching rare earth and cobalt from iron tailings obtained by neodymium iron boron waste hydrochloric acid optimum solution method |
-
1998
- 1998-06-15 JP JP16742098A patent/JP3391704B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6852246B2 (en) | 1999-06-11 | 2005-02-08 | Seiko Epson Corporation | Magnetic powder and isotropic bonded magnet |
| EP1115127A2 (en) * | 2000-01-06 | 2001-07-11 | Seiko Epson Corporation | Magnetic powder and isotropic bonded magnet |
| EP1115126A3 (en) * | 2000-01-06 | 2002-05-15 | Seiko Epson Corporation | Magnetic powder and isotropic bonded magnet |
| EP1115127A3 (en) * | 2000-01-06 | 2002-05-15 | Seiko Epson Corporation | Magnetic powder and isotropic bonded magnet |
| US6855265B2 (en) | 2000-01-07 | 2005-02-15 | Seiko Epson Corporation | Magnetic powder and isotropic bonded magnet |
| US6951625B2 (en) | 2000-01-07 | 2005-10-04 | Seiko Epson Corporation | Magnetic powder and isotropic bonded magnet |
| CN115466859A (en) * | 2022-09-07 | 2022-12-13 | 中国科学院赣江创新研究院 | Method for selectively leaching rare earth and cobalt from iron tailings obtained by neodymium iron boron waste hydrochloric acid optimum solution method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3391704B2 (en) | 2003-03-31 |
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