JPH01108707A - Rare-earth magnet - Google Patents
Rare-earth magnetInfo
- Publication number
- JPH01108707A JPH01108707A JP62266113A JP26611387A JPH01108707A JP H01108707 A JPH01108707 A JP H01108707A JP 62266113 A JP62266113 A JP 62266113A JP 26611387 A JP26611387 A JP 26611387A JP H01108707 A JPH01108707 A JP H01108707A
- Authority
- JP
- Japan
- Prior art keywords
- rare
- melting point
- powder
- metal
- binder
- 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
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 13
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000011230 binding agent Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 7
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052796 boron Inorganic materials 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 8
- 229910017052 cobalt Inorganic materials 0.000 claims 1
- 239000010941 cobalt Substances 0.000 claims 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims 1
- 238000010791 quenching Methods 0.000 claims 1
- 229910052723 transition metal Inorganic materials 0.000 claims 1
- 150000003624 transition metals Chemical group 0.000 claims 1
- 239000006247 magnetic powder Substances 0.000 abstract description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011812 mixed powder Substances 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 150000002909 rare earth metal compounds Chemical class 0.000 abstract description 2
- 239000002345 surface coating layer Substances 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 102100022704 Amyloid-beta precursor protein Human genes 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 101000823051 Homo sapiens Amyloid-beta precursor protein Proteins 0.000 description 1
- GXCLVBGFBYZDAG-UHFFFAOYSA-N N-[2-(1H-indol-3-yl)ethyl]-N-methylprop-2-en-1-amine Chemical compound CN(CCC1=CNC2=C1C=CC=C2)CC=C GXCLVBGFBYZDAG-UHFFFAOYSA-N 0.000 description 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 229910000979 O alloy Inorganic materials 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 241000221535 Pucciniales Species 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- DZHSAHHDTRWUTF-SIQRNXPUSA-N amyloid-beta polypeptide 42 Chemical compound C([C@@H](C(=O)N[C@@H](C)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@H](C(=O)NCC(=O)N[C@@H](CO)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CCCCN)C(=O)NCC(=O)N[C@@H](C)C(=O)N[C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCSC)C(=O)N[C@@H](C(C)C)C(=O)NCC(=O)NCC(=O)N[C@@H](C(C)C)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C)C(O)=O)[C@@H](C)CC)C(C)C)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@@H](NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](CC=1N=CNC=1)NC(=O)[C@H](CC=1N=CNC=1)NC(=O)[C@@H](NC(=O)[C@H](CCC(O)=O)NC(=O)[C@H](CC=1C=CC(O)=CC=1)NC(=O)CNC(=O)[C@H](CO)NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](CC=1N=CNC=1)NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CCC(O)=O)NC(=O)[C@H](C)NC(=O)[C@@H](N)CC(O)=O)C(C)C)C(C)C)C1=CC=CC=C1 DZHSAHHDTRWUTF-SIQRNXPUSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 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)
- Hard Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は磁石の基本組成がＲｓ Ｆｅ、Ｂからなる、金
属結合法でつくられる、希土類磁石に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rare earth magnet whose basic composition is RsFe, B, which is produced by a metal bonding method.
ＲＦｅｌｌ系化合物の磁石化の試みは、１９８１年Ｊ、
Ｊ、Ｃｒｏａｔ、０ｂｓｅｒｖａｔｉｏｎｏｆ、
ｌａｒｇｅ ｒｏｏｍ−ｔｅｍＰｅｒａｔｕｒａ
Ｃｏｅｃｉｖｉｔｙ ｉｎ ｍａｌｔ ５ｐｕｎ
Ｎｄ、４・ Ｆｅ、８ ＡＰＰＩ。An attempt to magnetize RFell-based compounds was made in 1981 by J.
J, Croat, 0bservationof,
large room-temPeratura
Coecity in malt 5pun
Nd, 4. Fe, 8 APPI.
Ｐｈｙｓ、 Ｌｅｔｅｒ＋ Ｖｏ１３９．Ｎｏ、４Ｐ
３５７〜３５８が初めてである。その後盛んに研究開発
が行われ実用的な性能が得られるようになった０例えば
−希土類−鉄一ボロ／系超急冷薄
帯粉末とを機物樹脂結合材からなる樹脂結合型磁石につ
％ｓでは知られていた。Phys, Letter+ Vo139. No, 4P
357-358 is my first time. After that, active research and development was carried out, and practical performance was obtained. It was known in s.
（発明が解決しようとする問題点〕
しかしながら従来の樹脂結合型希土類、鉄、ボロン磁石
は、耐熱性、耐食性等、実用性を阻害する問題が多くあ
った０例えば鉄を基本組成にするため、空気中で錆易い
欠点があった。またパインダーが育機物樹脂のため空気
中の水分を吸湿し易いため、錆の発生、寸法変化が大き
いなど実用レベルでの問題が大きい０本発明はこのよう
な問題点を解決するもので、その目的とするところは永
久磁石の耐酸化性を改善し、実用性能を高めることにあ
る。(Problems to be solved by the invention) However, conventional resin-bonded rare earth, iron, and boron magnets have many problems that impede their practicality, such as heat resistance and corrosion resistance.For example, because the basic composition is iron, The present invention has the disadvantage that it easily rusts in the air.Also, since the binder is made of a growing resin, it easily absorbs moisture in the air, which causes serious problems on a practical level such as rust formation and large dimensional changes. The purpose is to improve the oxidation resistance of permanent magnets and improve their practical performance.
本発明の磁石粉末は、希土類金属、鉄、ポロンを基本組
成としたものである。希土類金属は、Ｎｄｔ Ｙ％ Ｐ
ｒ％Ｓｍ１Ｇｄｓ ＤＹ％ Ｃｅの１種又は２Ｎ以上Ｆ
ｅを主体にＣｏ５Ｎｉでその一部を置換しさらに、Ｂ、
Ｃｓ ５ｉＳＰ％ Ｓｌなどの１種又は２種以上からな
るＲ＊ Ｐｅｔ ａ Ｂ希土類余興間化合物を使用する
。その粉末粒度は８０メツシュ（１７７μｍ）以下であ
る。The magnetic powder of the present invention has a basic composition of rare earth metals, iron, and poron. Rare earth metals are Ndt Y% P
r%Sm1Gds DY% Ce type 1 or 2N or more F
e is mainly replaced with Co5Ni, and further, B,
An R*Pet a B rare earth entertainment compound consisting of one or more types such as Cs 5iSP% Sl is used. Its powder particle size is less than 80 mesh (177 μm).
次にバインダーとして融点が９００℃以下の金属、合金
粉末を用意する。単体金属粉末として、Ｃｕ１Ａｆ、２
１％ Ｃｄ％ ８１％ Ｓｂ％ Ｐｂ％ １ｎｓＢｉ
がある０合金としては、Ｐｂ−８ｎ八へダ合金、Ａｇ−
Ｃｕ−Ｎｉ５ Ａｇ−Ｃｕ−Ｚｎ５ロウ接合金などを用
いる。またこれら金属合金粉末は、粒度は５０μｍ以下
が好ましい、これら結合材の量は１０容量（Ｖｏｊ２）
％〜５０Ｖｏ、Ｑ％が好ましい５ｌＯＶｏρ％以下では
、磁気性能は高められるものの機械的強度は低（なって
しまうため実用性を阻害する。また磁石粉末表面コーテ
ィング層が薄くなるので、耐錆性が低下し問題となる。Next, a metal or alloy powder having a melting point of 900° C. or less is prepared as a binder. As a single metal powder, Cu1Af,2
1% Cd% 81% Sb% Pb% 1nsBi
0 alloys include Pb-8n Hachiheda alloy, Ag-
Cu-Ni5 Ag-Cu-Zn5 solder metal or the like is used. In addition, the particle size of these metal alloy powders is preferably 50 μm or less, and the amount of these binders is 10 volumes (Voj2)
% to 50Vo, Q% is preferably 5lOVoρ% or less, although the magnetic performance is improved, the mechanical strength is low (which impedes practical use. Also, since the magnet powder surface coating layer becomes thin, the rust resistance decreases. This decreases and becomes a problem.
一方５０Ｖｏβ％を超えると、磁気性能が低くなり特徴
を発揮できなくなってしまうのでこれまでとした。On the other hand, if it exceeds 50 Voβ%, the magnetic performance will be low and the characteristics will not be exhibited, so this is what has been described above.
実施例−１
化学組成が、Ｎｄ３０．１％、Ｃｏ４．８％、Ｂ１．０
％、Ｆｅ’Ａ部からなる急冷薄帯粉末を用意した。次に
金属結合材Ｐｂ−５０％Ｓｎ合金粉末を準備した。粉末
粒度は１０〜３０３ｍであった。Example-1 Chemical composition: Nd30.1%, Co4.8%, B1.0
A quenched ribbon powder consisting of %, Fe'A part was prepared. Next, a metal binder Pb-50%Sn alloy powder was prepared. Powder particle size was 10-303 m.
磁石粉末とバインダー粉末は、予めボールミル中で混合
された。ここで試料は、パインダーツ量を１０％、２０
％、３０％、４０％、５０％にっいて用意した。続いて
混合粉末は第１図に示す、成形型に装入し加圧成形した
。試料３は、ＮｄＦｅＢ粉末とバインダーのＰ ｂ／Ｓ
ｎ合金粉末である。１の上パンチ、２の下パンチは、
耐熱超硬合金でつられ、油圧プレスラム１と固定テーブ
ル６の間にセットされ加圧される。５は、ダイス（外型
）で１．２、と同様の材料で形成されている。Magnet powder and binder powder were mixed in advance in a ball mill. Here, the sample contains pine darts of 10% and 20%.
%, 30%, 40%, and 50%. Subsequently, the mixed powder was charged into a mold shown in FIG. 1 and molded under pressure. Sample 3 is Pb/S of NdFeB powder and binder.
n alloy powder. The upper punch of 1 and the lower punch of 2 are
It is suspended from heat-resistant cemented carbide, set between a hydraulic press ram 1 and a fixed table 6, and pressurized. 5 is a die (outer mold) made of the same material as 1.2.
７の耐火レンガ構造による炉体は、９のヒーターで約２
００℃に加熱、８の温度センサーで制御されている。こ
こで成形圧力は、約１ｔｏｎ／ｃｍ黛、加熱ｉ度は、２
００±１℃、雰囲気は大気中で圧縮成形を行った。試料
の寸法形状は、φ１３Ｘ１２ｔｍｍ１円柱状である。磁
気特性を第２図に示す、バインダーの量が、１０％で（
ＢＨ）ｍａｘ９．５ＭＧＯｅ級の高性能磁石が得られ、
同様に２０％で７ＭＧＯｅ級の、メタルバインド型磁石
を得られた。実用性を考えれば、４０％〜１０％の、バ
インダー量範囲が好ましいものといえる。The furnace body with a firebrick structure of 7 has a heating capacity of about 2 with a heater of 9.
Heated to 00℃, controlled by 8 temperature sensors. Here, the molding pressure was approximately 1 ton/cm, and the heating degree was 2
Compression molding was performed at 00±1° C. in the air. The dimensions and shape of the sample are φ13×12 tmm 1 cylindrical. The magnetic properties are shown in Figure 2, when the amount of binder is 10% (
BH) A high performance magnet of max 9.5 MGOe class was obtained,
Similarly, with 20%, a metal-bound magnet of 7MGOe class was obtained. Considering practicality, it can be said that a binder amount range of 40% to 10% is preferable.
実施例−２
磁石粉末は、Ｎｄｓ ｅ Ｆｅｓ ｓ Ｃｏａ ｎｌ
ｗｔ％よりなる、超急冷薄帯粉末を用意した。粒度は、
平均で１３μｍで分布は、３〜５０μｍであった。前記
粉末を第１表に示す組成のメタルバインダーを使用した
。なお比較例は、バインターにエポキシ樹脂を使用した
。試料形状は、φＩＯＸ７１ｍｍ ’
第 １ 表
円柱状である。成形温度は、２００”０〜９２０℃でそ
れぞれ使用したバインダーの材質に依存する。すなわち
材料組成の違いが触点の差としてあられれる。従って、
触点以下の成形温度が好ましい０次に得られた試料の緒
特性を第２表に示す。Example-2 Magnet powder is Ndse Fes Coanl
An ultra-quenched ribbon powder consisting of wt% was prepared. The particle size is
The distribution was 3-50 μm with an average of 13 μm. A metal binder having the composition shown in Table 1 was used as the powder. In the comparative example, an epoxy resin was used as the binder. The sample shape is φIOX 71 mm 'Table 1 cylindrical. The molding temperature varies from 200" to 920°C and depends on the material of the binder used. In other words, the difference in material composition can be seen as a difference in the contact point. Therefore,
Table 2 shows the properties of the samples obtained at order 0, where the molding temperature is preferably below the touch point.
第 ２ 表
磁気性能は、等方性磁石としては大変高い性能が得られ
た。また、曲げ強度も育機物樹脂バインダーに比べ２倍
〜３倍の高強度化を達成した。Table 2 Regarding the magnetic performance, very high performance was obtained for an isotropic magnet. In addition, the bending strength was two to three times higher than that of the resin binder.
次に不可逆減磁は、磁気性能測定試料と同一のものを３
０ＫＯｅでパルス着磁した。各着磁サンプルは、予めフ
ラックス測定し基準値とした。統いて１２０℃に加熱し
た恒温槽中に１０００時間投入し、不可逆減磁量を調べ
た。比較例に比べ約１７２と大変熱安定性を高められた
。この理由は磁石粉末粒子の結合力が高いことに基因し
たものといえる。Next, irreversible demagnetization is performed using the same sample as the magnetic performance measurement sample.
Pulse magnetization was performed at 0KOe. The flux of each magnetized sample was measured in advance and used as a reference value. The specimens were placed in a constant temperature bath heated to 120° C. for 1000 hours, and the amount of irreversible demagnetization was examined. Thermal stability was significantly increased to about 172 compared to the comparative example. The reason for this can be said to be that the magnetic powder particles have a high bonding force.
（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、鉄
、ボロンの希土類金属化合物粉末に融点が９００℃以下
の金属又は合金粉末を１０〜５゜ｗｔ％添加し、前記融
点以下の温度で圧縮成形して永久磁石を製造する。この
ため従来に比べ機械的強度が大幅に向上し、割れや欠け
が発生しにくくなるので、機械加工し易（なる。また、
磁石としての熱安定性にすぐれる利点もある。以上の特
徴・利点を考えれば、水晶腕杆用モータロータ磁石、ク
ロック用ロータ磁石、ＯＡ、ＦＡ用ＰＭ型ステップモー
タ、Ｄ／Ｃモータの高性能化、品質の安定化などに多大
の効果を育するものである。(Effects of the Invention) As described above, according to the present invention, 10 to 5 wt% of a metal or alloy powder having a melting point of 900°C or less is added to a rare earth metal compound powder whose basic composition is rare earth, iron, and boron, and the Permanent magnets are manufactured by compression molding at a temperature below the melting point.As a result, the mechanical strength is greatly improved compared to conventional magnets, and cracking and chipping are less likely to occur, making machining easier.
Another advantage is that it has excellent thermal stability as a magnet. Considering the above features and advantages, it will have a great effect on improving the performance and stabilizing quality of motor rotor magnets for crystal arm rods, rotor magnets for clocks, PM type step motors for OA and FA, D/C motors, etc. It is something to do.
第１図は本発明の希土類磁石製造のための成形法の主要
断面図。
第２図は本発明のメタルバインダー量と磁気特性の関係
を示す図。
１・・・油圧プレスラム
２・・・上パンチ
３・・・磁石
４・・・下バンチ
５・・・グイ
６・・・油圧プレステーブル
７・・・炉
８・・・熱電対
９・・・ヒーター
以 上
Ｐ ｂ／ｓｎ３紛木の捧卯−４（ｗｔ幻第２図FIG. 1 is a main cross-sectional view of the molding method for manufacturing rare earth magnets of the present invention. FIG. 2 is a diagram showing the relationship between the amount of metal binder and magnetic properties of the present invention. 1... Hydraulic press ram 2... Upper punch 3... Magnet 4... Lower bunch 5... Gui 6... Hydraulic press table 7... Furnace 8... Thermocouple 9... More than a heater
Claims (2)
ン（Ｂ）からなり超急冷法でつくられた粉末粒径が８０
メッシュ以下の磁石粉末を重量比５０％〜９０％残部は
、結合材で融点が９００℃以下の金属又は合金から構成
され次に融点以下の温度で加熱成形しでつくられたこと
を特徴とする希土類磁石。(1) The basic composition is rare earth metal (R), iron (Fe), and boron (B), and the powder particle size made by ultra-quenching method is 80.
It is characterized in that it is made of magnet powder of mesh size or less, the balance of which is a binder of 50% to 90% by weight, of a metal or alloy with a melting point of 900°C or less, and then heated and formed at a temperature below the melting point. Rare earth magnet.
移金属で置換した特許請求の範囲第１項記載の希土類磁
石。(2) The rare earth magnet according to claim 1, wherein a part of the iron is replaced with a transition metal other than iron, such as cobalt (Co).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62266113A JPH01108707A (en) | 1987-10-21 | 1987-10-21 | Rare-earth magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62266113A JPH01108707A (en) | 1987-10-21 | 1987-10-21 | Rare-earth magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01108707A true JPH01108707A (en) | 1989-04-26 |
Family
ID=17426503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62266113A Pending JPH01108707A (en) | 1987-10-21 | 1987-10-21 | Rare-earth magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01108707A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007173501A (en) * | 2005-12-22 | 2007-07-05 | Hitachi Ltd | Pressed powder magnet and rotating machine using it |
-
1987
- 1987-10-21 JP JP62266113A patent/JPH01108707A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007173501A (en) * | 2005-12-22 | 2007-07-05 | Hitachi Ltd | Pressed powder magnet and rotating machine using it |
| JP4719568B2 (en) * | 2005-12-22 | 2011-07-06 | 日立オートモティブシステムズ株式会社 | Powder magnet and rotating machine using the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3424578A (en) | Method of producing permanent magnets of rare earth metals containing co,or mixtures of co,fe and mn | |
| KR101378089B1 (en) | R-t-b sintered magnet | |
| CN100501883C (en) | High strong toughness iron-base rear earth permanent magnet and its preparation method | |
| JPH03503115A (en) | Manufacturing method of permanent magnet rotor | |
| CN106537525B (en) | The complex sintered magnet of anisotropy comprising MnBi and the normal pressure-sintered technique for being used to prepare it | |
| JP2000508476A (en) | Low loss easy-saturated adhesive magnet | |
| CN107424695B (en) | Double-alloy nanocrystalline rare earth permanent magnet and preparation method thereof | |
| US3540945A (en) | Permanent magnets | |
| JPH0366105A (en) | Rare earth anisotropic powder and magnet, and manufacture thereof | |
| JPS6325904A (en) | Permanent magnet and manufacture of the same and compound for manufacture of the permanent magnet | |
| JP6484994B2 (en) | Sm-Fe-N magnet molded body and method for producing the same | |
| EA014583B1 (en) | Composition for manufacturing caked permanent magnet, caked permanent magnet and method for producing thereof | |
| JP4618557B2 (en) | Soft magnetic alloy compact and manufacturing method thereof | |
| JP2011003662A (en) | Permanent magnet and method of manufacturing the same | |
| JPH01108707A (en) | Rare-earth magnet | |
| Falk | A current review of Lodex permanent magnet technology | |
| JPH07120576B2 (en) | Cast rare earth-method for manufacturing iron-based permanent magnets | |
| JPH056323B2 (en) | ||
| JPH03129703A (en) | Rare-earth-fe-co-b-based permanent magnet powder and bonded magnet excellent in magnetic anisotropy and corrosion resistance | |
| US5211766A (en) | Anisotropic neodymium-iron-boron permanent magnets formed at reduced hot working temperatures | |
| JPH07176418A (en) | High-performance hot-pressed magnet | |
| JPH07122414A (en) | Rare earth permanent magnet and manufacture thereof | |
| CN108015268A (en) | The bonded permanent magnet that a kind of R-B-Ti-Fe alloy powders and preparation method thereof are prepared with the alloy powder | |
| JPH07123083B2 (en) | Cast rare earth-method for manufacturing iron-based permanent magnets | |
| JP2002175909A (en) | Bonded magnetic having superior thermal stability, and its manufacturing method |