JPS6354702A - Manufacture of rare earth-iron boron resin magnet - Google Patents
Manufacture of rare earth-iron boron resin magnetInfo
- Publication number
- JPS6354702A JPS6354702A JP61198105A JP19810586A JPS6354702A JP S6354702 A JPS6354702 A JP S6354702A JP 61198105 A JP61198105 A JP 61198105A JP 19810586 A JP19810586 A JP 19810586A JP S6354702 A JPS6354702 A JP S6354702A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- resin
- rare earth
- molded
- iron
- 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
- 229920005989 resin Polymers 0.000 title claims abstract description 15
- 239000011347 resin Substances 0.000 title claims abstract description 15
- 229910052796 boron Inorganic materials 0.000 title claims abstract description 9
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 title claims 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims 2
- 229910052742 iron Inorganic materials 0.000 title claims 2
- 238000004519 manufacturing process Methods 0.000 title claims 2
- 239000006247 magnetic powder Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 239000000843 powder Substances 0.000 abstract description 4
- 229910001172 neodymium magnet Inorganic materials 0.000 abstract description 3
- 239000004925 Acrylic resin Substances 0.000 abstract description 2
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 abstract description 2
- 230000006866 deterioration Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 240000008840 Dalbergia sissoo Species 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- ZDVYABSQRRRIOJ-UHFFFAOYSA-N boron;iron Chemical compound [Fe]#B ZDVYABSQRRRIOJ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
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)
- Compositions Of Macromolecular Compounds (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
本発明の出発原料は異方性希土類−鉄−ホウ素系焼結磁
石である。ここに希土類としてはＮｄ 。DETAILED DESCRIPTION OF THE INVENTION The starting material of the present invention is an anisotropic rare earth-iron-boron based sintered magnet. Here is Nd as a rare earth.
Ｌａ、Ｃ・、Ｐｒ 等の任意の希土類元素であり、例
えばＮｄ −Ｆｅ −Ｂ 系、或いはミツシュメタル（
Ｎｄ。Any rare earth element such as La, C., Pr, etc., for example, Nd-Fe-B series or Mitsushi metal (
Nd.
Ｌ＆、Ｃｏ、Ｐｒ を主に含有）などが使用できる。Mainly containing L&, Co, Pr) etc. can be used.
また他の成分が少量含有されていても良い。この異方性
希土類−鉄−ホウ素系焼結磁石は磁場中成形後焼成する
などの任意の公知方法によ！７製造することができる。In addition, other components may be contained in small amounts. This anisotropic rare earth-iron-boron based sintered magnet can be produced by any known method such as molding in a magnetic field and then firing! 7 can be manufactured.
例えば、希土類−鉄−ホウ素系原料、例えばＮｄ、Ｆａ
、Ｂの所定割合に混合し、高温で溶解してインゴットを
作り、これをショークラッシャー、ブラウンミル等で粗
粉砕し、次いでジェットミル、ボールミル等で微粉砕し
、磁場中で塊状に成形し、高温焼結及び時効処理し、焼
結体を得る。このものは磁気異方性を有する、高特性の
焼結磁石である。For example, rare earth-iron-boron raw materials such as Nd, Fa
, B in a predetermined ratio and melted at high temperature to make an ingot, which is coarsely crushed using a show crusher, brown mill, etc., then finely crushed using a jet mill, ball mill, etc., and formed into a lump in a magnetic field. A sintered body is obtained by high temperature sintering and aging treatment. This is a high-performance sintered magnet with magnetic anisotropy.
次に、この異方性焼結磁石を上記と同様にして粉砕し、
粉末磁石とし、次いで磁場中プレスすることによυ所定
の成形体にする。このとき樹脂結合剤は使用しない。Next, this anisotropic sintered magnet is crushed in the same manner as above,
It is made into a powder magnet, and then pressed in a magnetic field to form a predetermined compact. At this time, no resin binder is used.
磁場中プレスの工程では機械的歪によシ磁石粉には内部
応力が発生して磁気特性が低下する。従って、次に６０
０〜１０５０℃、好ましくは７００〜１０００℃の温度
で処理する。このとき、非酸化性雰囲気を用いることが
望ましい。またこの熱処理は特性が十分に改善される時
間、例えば１時間行う。これによりプレス加工の際に生
じた機械的な歪が除去される。In the process of pressing in a magnetic field, internal stress is generated in the magnet powder due to mechanical strain, which deteriorates the magnetic properties. Therefore, next 60
The treatment is carried out at a temperature of 0 to 1050°C, preferably 700 to 1000°C. At this time, it is desirable to use a non-oxidizing atmosphere. Further, this heat treatment is carried out for a time such that the characteristics are sufficiently improved, for example, 1 hour. This eliminates mechanical strain caused during press working.
以上のように処理された磁石成形体にはエポキシ樹脂等
の硬化性樹脂や加熱によって可塑化し常温では固体であ
る熱可塑性樹脂を含浸し、熱硬化または冷却硬化する。The magnet molded body treated as described above is impregnated with a curable resin such as an epoxy resin or a thermoplastic resin that is plasticized by heating and is solid at room temperature, and then hardened by heat or by cooling.
以上のようにして得られた異方性希土類−鉄−ホウ素系
樹脂磁石は歪が除かれているからすぐれた磁気特性を有
する。The anisotropic rare earth-iron-boron resin magnet obtained as described above has excellent magnetic properties since strain is removed.
実施例 １
（ＢＨ）ｒｎ＆！５５ ＭＧＯｅのＮｄ−Ｆｅ−Ｂ 焼
結磁石をブラウンミルを用いて粉砕したのち、１０ ｋ
ｏｅの磁場中でプレスし、成形体を得た。この成形体に
９００℃でＡｒ９１時間の熱処理を施し、エポキシアク
リレート樹脂を真空含浸し、１００℃でキュアーして樹
脂磁石を得た。Example 1 (BH)rn&! After pulverizing the Nd-Fe-B sintered magnet of 55 MGOe using a Brown mill,
A molded body was obtained by pressing in a magnetic field of OE. This molded body was heat treated with Ar at 900°C for 91 hours, vacuum impregnated with epoxy acrylate resin, and cured at 100°C to obtain a resin magnet.
比較例１として同じ磁性粉末を熱処理して、礎石特性を
回復させ、同条件でプレスしたのち熱処理せずに同じ樹
脂を同じ条件で含浸キュアーした。As Comparative Example 1, the same magnetic powder was heat treated to restore the cornerstone properties, pressed under the same conditions, and then impregnated and cured with the same resin under the same conditions without heat treatment.
実施例 Ｚ
（Ｂ Ｈ） ｒｎａｘ ２０ Ｍ Ｇ ＯｅのＭＭ−Ｆ
ｅ−Ｂ 焼結磁石（ＭＭはミツシュメタルを示し、本
例に用いたＭＭの組成は、Ｌａ １５ ｗｔ％、Ｃ＠３
５ｗｔ％、Ｐｒ５ ｗｔチ、Ｎｄ ４５ ｗｔチより成
る）を用い、実施例１と同様の方法で樹脂磁石を得た。Example Z (B H) rnax 20 M G Oe's MM-F
e-B sintered magnet (MM indicates Mitshu metal, the composition of MM used in this example is La 15 wt%, C@3
A resin magnet was obtained in the same manner as in Example 1 using 5 wt % of Pr, 5 wt % of Pr, and 45 wt of Nd.
比較例２にも同じＭＭ −Ｆｅ −Ｂ焼結磁石を用い、
実施例１と同じく、プレス後に熱処理せずに樹脂磁石化
した。The same MM-Fe-B sintered magnet was used in Comparative Example 2,
As in Example 1, resin magnetization was performed without heat treatment after pressing.
実施例１かられかるように、本発明によると機械歪が除
去されてすぐれた磁気特性が得られる。As can be seen from Example 1, according to the present invention, mechanical strain is removed and excellent magnetic properties can be obtained.
これに対して比較例１のものは、プレス成形による機械
歪が残り、特性が低い。また従来のように樹脂と母性粉
とを混練りし、プレス成形する場合には比較例１と同様
な機械的歪が除去されない低い特性となる。実施例２、
比較例２についても同様な結果であることがわかる。こ
のように、本発明によるとすぐれた磁気特性の希土類−
鉄−ホウ素系磁石が得られることがわかる。On the other hand, in Comparative Example 1, mechanical distortion due to press molding remains and the properties are poor. Further, when resin and mother powder are kneaded and press-molded as in the conventional method, mechanical strain similar to Comparative Example 1 cannot be removed, resulting in poor characteristics. Example 2,
It can be seen that Comparative Example 2 has similar results. As described above, according to the present invention, rare earth metals with excellent magnetic properties can be used.
It can be seen that an iron-boron magnet can be obtained.
代理人の氏名 盆 内 基 シス： １４−Ｚ’ ：、、＋Agent's name: Motogi Sisu: 14-Z’:,,+
Claims (1)
得られた磁性粉末を磁場中で所定の形状に成形し、これ
を６００〜１０５０℃の温度で熱処理し、次いでこの熱
処理された成形体に樹脂を含浸させることを特徴とする
、希土類−鉄−ホウ素系樹脂磁石の製造方法。(1) Grinding an anisotropic sintered rare earth-iron-boron magnet,
Rare earth - iron - characterized by molding the obtained magnetic powder into a predetermined shape in a magnetic field, heat-treating it at a temperature of 600 to 1050°C, and then impregnating the heat-treated molded body with a resin. A method for manufacturing a boron resin magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61198105A JPS6354702A (en) | 1986-08-26 | 1986-08-26 | Manufacture of rare earth-iron boron resin magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61198105A JPS6354702A (en) | 1986-08-26 | 1986-08-26 | Manufacture of rare earth-iron boron resin magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6354702A true JPS6354702A (en) | 1988-03-09 |
Family
ID=16385570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61198105A Pending JPS6354702A (en) | 1986-08-26 | 1986-08-26 | Manufacture of rare earth-iron boron resin magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6354702A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02109305A (en) * | 1988-10-18 | 1990-04-23 | Tokin Corp | Manufacture of polymer complex type rare earth magnet |
| JPH02155203A (en) * | 1988-12-08 | 1990-06-14 | Tokin Corp | Manufacture of polymer composite type rare earth magnet |
| JPH03214609A (en) * | 1990-01-19 | 1991-09-19 | Fuji Elelctrochem Co Ltd | Manufacture of bonded magnet |
| JPH03214607A (en) * | 1990-01-19 | 1991-09-19 | Fuji Elelctrochem Co Ltd | Manufacture of bonded magnet |
| JPH03214603A (en) * | 1990-01-19 | 1991-09-19 | Fuji Elelctrochem Co Ltd | Manufacture of bonded magnet |
| JPH03214604A (en) * | 1990-01-19 | 1991-09-19 | Fuji Elelctrochem Co Ltd | Manufacture of bonded magnet |
| JPH03214606A (en) * | 1990-01-19 | 1991-09-19 | Fuji Elelctrochem Co Ltd | Manufacture of bonded magnet |
| JPH03214608A (en) * | 1990-01-19 | 1991-09-19 | Fuji Elelctrochem Co Ltd | Manufacture of bonded magnet |
| JPH03214605A (en) * | 1990-01-19 | 1991-09-19 | Fuji Elelctrochem Co Ltd | Manufacture of bonded magnet |
-
1986
- 1986-08-26 JP JP61198105A patent/JPS6354702A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02109305A (en) * | 1988-10-18 | 1990-04-23 | Tokin Corp | Manufacture of polymer complex type rare earth magnet |
| JPH02155203A (en) * | 1988-12-08 | 1990-06-14 | Tokin Corp | Manufacture of polymer composite type rare earth magnet |
| JPH03214609A (en) * | 1990-01-19 | 1991-09-19 | Fuji Elelctrochem Co Ltd | Manufacture of bonded magnet |
| JPH03214607A (en) * | 1990-01-19 | 1991-09-19 | Fuji Elelctrochem Co Ltd | Manufacture of bonded magnet |
| JPH03214603A (en) * | 1990-01-19 | 1991-09-19 | Fuji Elelctrochem Co Ltd | Manufacture of bonded magnet |
| JPH03214604A (en) * | 1990-01-19 | 1991-09-19 | Fuji Elelctrochem Co Ltd | Manufacture of bonded magnet |
| JPH03214606A (en) * | 1990-01-19 | 1991-09-19 | Fuji Elelctrochem Co Ltd | Manufacture of bonded magnet |
| JPH03214608A (en) * | 1990-01-19 | 1991-09-19 | Fuji Elelctrochem Co Ltd | Manufacture of bonded magnet |
| JPH03214605A (en) * | 1990-01-19 | 1991-09-19 | Fuji Elelctrochem Co Ltd | Manufacture of bonded magnet |
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