JPH06942B2 - Rare earth permanent magnet - Google Patents
Rare earth permanent magnetInfo
- Publication number
- JPH06942B2 JPH06942B2 JP59077857A JP7785784A JPH06942B2 JP H06942 B2 JPH06942 B2 JP H06942B2 JP 59077857 A JP59077857 A JP 59077857A JP 7785784 A JP7785784 A JP 7785784A JP H06942 B2 JPH06942 B2 JP H06942B2
- Authority
- JP
- Japan
- Prior art keywords
- rare earth
- permanent magnet
- earth permanent
- alloy
- magnet
- 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.)
- Expired - Lifetime
Links
- 229910052761 rare earth metal Inorganic materials 0.000 title claims description 13
- 150000002910 rare earth metals Chemical class 0.000 title claims description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 238000005245 sintering Methods 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims description 3
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 229910001122 Mischmetal Inorganic materials 0.000 description 1
- 229910000583 Nd alloy Inorganic materials 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- IKNAJTLCCWPIQD-UHFFFAOYSA-K cerium(3+);lanthanum(3+);neodymium(3+);oxygen(2-);phosphate Chemical compound [O-2].[La+3].[Ce+3].[Nd+3].[O-]P([O-])([O-])=O IKNAJTLCCWPIQD-UHFFFAOYSA-K 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052590 monazite Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Description
【発明の詳細な説明】 〔技術分野〕 本発明は希土類金属、遷移金属そして半金属もしくは半
導体元素からなる合金より製造される希土類永久磁石に
関する。Description: TECHNICAL FIELD The present invention relates to a rare earth permanent magnet made of an alloy of a rare earth metal, a transition metal and a semimetal or a semiconductor element.
現在工業化されている希土類磁石は、SmCo5，Sm2(TM)17
（但しＴＭは遷移金属を表わす）、そしてNd-Fe-B系等
である。これらの磁石に使われている希土類金属はモナ
ザイト，バストネサイト等の鉱石からイオン交換法や溶
媒抽出法を用いて得られる分離希土であるためコストが
高くなり、さらに多量に使用される分離希土の中には供
給量に不安を生じる等の問題がでてきた。このため一部
では低コストの混合希土金属（ミッシュメタル以下ＭＭ
と略す）を用いて低コスト希土類磁石を開発することが
試みられている。このような希土類成分にＭＭを使用し
た磁石の磁気性能はMMCo5で焼結磁石の場合、残留磁束
密度（以下Ｂｒと略す）８１００（Ｇ），固有の保磁力
（以下ｉＨｃと略す）９０００（Ｏｅ），最大エネルギ
ー積（以下（ＢＨ）maxと略す）１4.５（MGOe)(H.Nage
l,H.P.Klein AIP Conf.Proc 24 695(1974)），等の報告
がなされているが、一般には性能が低いため工業的規模
で生産されるまでにはいたっていない。The rare earth magnets currently industrialized are SmCo 5 , Sm 2 (TM) 17
(However, TM represents a transition metal), and Nd-Fe-B system. The rare earth metals used in these magnets are separated rare earths obtained from ores such as monazite and bastnasite by ion exchange method or solvent extraction method. In rare earth, problems such as anxiety about the supply amount have appeared. For this reason, low cost mixed rare earth metals (Misch metal or less MM
Is abbreviated) is being attempted to develop a low-cost rare earth magnet. The magnetic performance of a magnet using MM as the rare earth component is MMCo 5 and a sintered magnet has a residual magnetic flux density (hereinafter abbreviated as Br) of 8100 (G) and an intrinsic coercive force (hereinafter abbreviated as iHc) of 9000 ( Oe), maximum energy product (abbreviated as (BH) max below) 14.5 (MGOe) (H.Nage
l, HPKlein AIP Conf.Proc 24 695 (1974)), etc., but the performance is generally low, so that it is not yet produced on an industrial scale.
本発明はこの様な問題点を解決するもので、その目的と
するところは、低コストかつ高性能な永久磁石を提供す
るところにある。The present invention solves such problems, and an object thereof is to provide a low-cost and high-performance permanent magnet.
本発明の永久磁石はＣｅ−Ｐｒ−Ｎｄ合金とＦｅからな
る系に半金属，半導体元素を添加しさらにはＦｅの一部
をＡｌ，Ｇａ，Ｉｎ，Ｓｎ，Ｐｄ，Ｂｉ等の元素で置換
して得られる合金を焼結法あるいは樹脂結合法で製造す
ることを特徴とする。In the permanent magnet of the present invention, a semi-metal and a semiconductor element are added to a system composed of a Ce-Pr-Nd alloy and Fe, and a part of Fe is replaced with an element such as Al, Ga, In, Sn, Pd and Bi. The alloy obtained as described above is manufactured by a sintering method or a resin bonding method.
以下本発明について実施例に基づき詳細に説明する。 Hereinafter, the present invention will be described in detail based on examples.
＜実施例１＞ 低周波溶解炉を用いてＡｒガス中で第１表に示す組成の
合金を溶解する。Example 1 An alloy having the composition shown in Table 1 is melted in Ar gas using a low frequency melting furnace.
該合金は１０７０℃×１０時間溶体化処理を行ない、更
に８００℃×４時間時効処理を行ない、その後ボールミ
ルで粉砕し粒径が２μｍ〜８０μｍの磁性粉末とした。
この磁性粉末にエポキシ樹脂を2.０重量％加えて混練す
る。そしてこの混練物を磁場中で圧縮成形し、その後１
５０℃×１時間加熱して得られた永久磁石の磁気性能を
第２表に示す。第２表より本発明磁石は混合希土を利用
した磁石としては非常に高い性能を持っていることが判
る。 The alloy was subjected to solution treatment at 1070 ° C. for 10 hours, further subjected to aging treatment at 800 ° C. for 4 hours, and then pulverized with a ball mill to obtain a magnetic powder having a particle size of 2 μm to 80 μm.
2.0% by weight of epoxy resin is added to the magnetic powder and kneaded. Then, this kneaded material is compression molded in a magnetic field, and then 1
Table 2 shows the magnetic performance of the permanent magnets obtained by heating at 50 ° C. for 1 hour. It can be seen from Table 2 that the magnet of the present invention has extremely high performance as a magnet using mixed rare earth.
＜実施例２＞ 原子比でＣｅ0.4Ｐｒ0.1Ｎｄ0.5（Ｆｅ1-mＢｍ）5.8と
表される組成において、ｍの値を変えた合金を実施例１
と同じ方法を用いて永久磁石を製造する。この永久磁石
の磁気性能を第１図に示す。0.０２≦ｍ≦0.２の範囲で
良好な磁気性能を示している。 <Example 2> In composition represented by Ce 0.4 Pr 0.1 Nd 0.5 (Fe 1-m B m) 5.8 in atomic ratio, implementing the alloy with different values of m Example 1
A permanent magnet is manufactured using the same method. The magnetic performance of this permanent magnet is shown in FIG. Good magnetic performance is shown in the range of 0.02 ≦ m ≦ 0.2.
＜実施例３＞ 原子比でＣｅ0.4Ｐｒ0.1Ｎｄ0.5（Ｆｅ0.91Ｂ0.09）ｚ
と表される組成において、ｚの値を変えた合金を実施例
１と同じ方法を用いて永久磁石を製造する。この永久磁
石の磁気性能を第２図に示す。ｚの値は、4.０≦ｚ≦8.
０が望ましく、その中でも5.０≦ｚ6.０が特に望まし
い。<Example 3> Ce 0.4 Pr 0.1 Nd 0.5 (Fe 0.91 B 0.09 ) z in atomic ratio
Using the same method as in Example 1, permanent magnets are manufactured using alloys having the composition expressed as The magnetic performance of this permanent magnet is shown in FIG. The value of z is 4.0 ≦ z ≦ 8.
0 is desirable, and 5.0 ≦ z 6.0 is particularly desirable.
＜実施例４＞ 第３表に示す組成の合金に実施例１と同じ方法を用いて
永久磁石を製造する。この永久磁石の磁気性能を第４表
に示す。<Example 4> A permanent magnet is manufactured by using the alloy having the composition shown in Table 3 by the same method as in Example 1. The magnetic performance of this permanent magnet is shown in Table 4.
第４表よりＢの代りにＳｉ，Ｃ，Ｇｅ，Ｐ，Ｓの各元素
を添加してもＢと同様に高い性能を与えることが判る。 It can be seen from Table 4 that even if each element of Si, C, Ge, P and S is added instead of B, high performance can be obtained similarly to B.
＜実施例５＞ 第５表に示す組成の合金に実施例１と同じ製造方法を用
いて永久磁石を作成する。そしてこの永久磁石の磁気性
能を第６表に示す。 <Example 5> A permanent magnet is prepared from the alloy having the composition shown in Table 5 by the same manufacturing method as in Example 1. The magnetic performance of this permanent magnet is shown in Table 6.
Ｆｅの一部をＡｌ，Ｇａ，Ｉｎ，Ｓｎ，Ｐｄ，Ｂｉの各
元素で置換したものは保磁力が増加しておりそれにつれ
て性能も向上している。 Those obtained by substituting a part of Fe with Al, Ga, In, Sn, Pd, and Bi elements have an increased coercive force, and the performance is improved accordingly.
＜実施例６＞ 実施例１，４，５の中に使われている試料No.２，６，
１３の組成の合金について、低周波溶解炉を用いてＡｒ
ガス中で溶解する。そして該合金をボールミルを用いて
粒径２μｍ〜５μｍの範囲の微粉末に粉砕する。この粉
末を磁場中で圧縮成形し、その成形体を１１００℃×１
時間焼結後１０７０℃×２時間溶体化処理を行ない急冷
し、さらに８００℃×２時間時効処理する。この様にし
て得られた永久磁石の磁気性能を第７表に示す。 <Example 6> Sample Nos. 2, 6 used in Examples 1, 4, and 5.
For the alloys of composition No. 13, using a low frequency melting furnace, Ar
Dissolves in gas. Then, the alloy is pulverized with a ball mill into fine powder having a particle size of 2 μm to 5 μm. This powder is compression molded in a magnetic field, and the molded body is 1100 ° C x 1
After sintering for 10 hours, solution treatment is performed at 1070 ° C. for 2 hours, quenching is performed, and aging treatment is further performed at 800 ° C. for 2 hours. Table 7 shows the magnetic performance of the permanent magnets thus obtained.
第７表より本発明磁石は焼結法を用いた場合、SmCo5系
の焼結磁石に匹敵する磁気性能を有することが判る。 It is understood from Table 7 that the magnet of the present invention has magnetic performance comparable to that of the SmCo 5 system sintered magnet when the sintering method is used.
＜実施例７＞ 試料No.２，６，１３の組成の合金について低周波溶解
炉を用いてＡｒガス中で溶解する。その後該合金を１０
７０℃×１０時間溶体化処理，８００℃×４時間時効処
理する。そしてこの合金をボールミルで２μｍ〜８０μ
ｍの粒度分布にまで粉砕し、さらにこの粉末を樹脂と混
練して、押出し成形機、あるいは射出成形機を用いて磁
場中で成形する。第８表に成形条件、第９表に永久磁石
の磁気性能を表す。<Example 7> The alloys having the compositions of Sample Nos. 2, 6 and 13 are melted in Ar gas using a low frequency melting furnace. Then the alloy is added to 10
Solution heat treatment at 70 ° C. × 10 hours, aging treatment at 800 ° C. × 4 hours. And this alloy is 2μm ～ 80μ in a ball mill.
The powder is pulverized to a particle size distribution of m, and this powder is kneaded with a resin and molded in a magnetic field using an extrusion molding machine or an injection molding machine. Table 8 shows the molding conditions, and Table 9 shows the magnetic performance of the permanent magnets.
〔効果〕 以上述べてきたように本発明によれば、廉価で高性能な
希土類永久磁石の供給が可能となるため産業界に及ぼす
効果は大きいと言える。 [Effects] As described above, according to the present invention, it is possible to supply inexpensive and high-performance rare earth permanent magnets, and it can be said that the present invention has a great effect on the industry.
第１図はｍの値と磁石の磁気性能の関係を表したグラ
フ。 第２図はｚの値と磁石の磁気性能の関係を表したグラ
フ。FIG. 1 is a graph showing the relationship between the value of m and the magnetic performance of the magnet. FIG. 2 is a graph showing the relationship between the value of z and the magnetic performance of the magnet.
Claims (2)
とを特徴とする稀土類永久磁石。 但し、ＭはＢ，Ｃ，Ｓｉ，Ｇｅ，Ｐ，Ｓの各元素のうち
１種または２種以上の元素からなり、 ｘ，ｙ，ｚ，ｍは、 0.1≦ｘ≦0.5 0.1≦ｙ≦0.85 4.0≦ｚ≦8.0 0.02≦ｍ≦0.2 ０＜１−ｘ−ｙ≦0.8 の値の範囲とする。1. An alloy represented by an atomic ratio of Ce 1-x-y Pr x Nd y (Fe 1-m M m ) z is manufactured by a sintering method and a resin bonding method. Rare earth permanent magnet. However, M is composed of one or more elements of each element of B, C, Si, Ge, P and S, and x, y, z and m are 0.1 ≦ x ≦ 0.5 0.1 ≦ y ≦ 0.85 The range of values is 4.0 ≦ z ≦ 8.0 0.02 ≦ m ≦ 0.2 0 <1-x−y ≦ 0.8.
とを特徴とする稀土類永久磁石。 但し、ＱはＡｌ，Ｇａ，Ｉｎ，Ｓｎ，Ｐｄ，Ｂｉの各元
素のうち１種または２種以上の元素からなり、ＭはＢ，
Ｃ，Ｓｉ，Ｇｅ，Ｐ，Ｓの各元素のうち１種または２種
以上の元素からなるものとし、さらに、ｘ，ｙ，ｚ，
ｔ，ｍは、 0.1≦ｘ≦0.5 0.1≦ｙ≦0.85 4.0≦ｚ≦8.0 ０≦ｔ≦0.1 0.02≦ｍ≦0.2 ０＜１−ｘ−ｙ≦0.8 の値の範囲とする。2. An alloy represented by atomic ratio Ce 1-xy Pr x Nd y {(Fe 1-t Q t ) 1-m M m } z is manufactured by a sintering method and a resin bonding method. Rare earth permanent magnets characterized by this. However, Q is composed of one or more elements of each element of Al, Ga, In, Sn, Pd, Bi, and M is B,
Each element of C, Si, Ge, P, S is composed of one or more elements, and further, x, y, z,
t and m are in the range of values of 0.1 ≦ x ≦ 0.5 0.1 ≦ y ≦ 0.85 4.0 ≦ z ≦ 8.0 0 ≦ t ≦ 0.1 0.02 ≦ m ≦ 0.2 0 <1-xy ≦ 0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59077857A JPH06942B2 (en) | 1984-04-18 | 1984-04-18 | Rare earth permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59077857A JPH06942B2 (en) | 1984-04-18 | 1984-04-18 | Rare earth permanent magnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60221549A JPS60221549A (en) | 1985-11-06 |
| JPH06942B2 true JPH06942B2 (en) | 1994-01-05 |
Family
ID=13645730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59077857A Expired - Lifetime JPH06942B2 (en) | 1984-04-18 | 1984-04-18 | Rare earth permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06942B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9070500B2 (en) | 2013-04-25 | 2015-06-30 | Tdk Corporation | R-T-B based permanent magnet |
| US9082537B2 (en) | 2013-04-25 | 2015-07-14 | Tdk Corporation | R-T-B based permanent magnet |
| US9111674B2 (en) | 2013-04-25 | 2015-08-18 | Tdk Corporation | R-T-B based permanent magnet |
| US9396852B2 (en) | 2013-04-25 | 2016-07-19 | Tdk Corporation | R-T-B based permanent magnet |
| US9607743B2 (en) | 2013-04-22 | 2017-03-28 | Tdk Corporation | R-T-B based sintered magnet |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6150310A (en) * | 1984-08-11 | 1986-03-12 | Tohoku Metal Ind Ltd | Sintered type rare-earth magnet |
| JPS6231102A (en) * | 1985-08-01 | 1987-02-10 | Hitachi Metals Ltd | Sintered permanent magnet |
| US4954186A (en) * | 1986-05-30 | 1990-09-04 | Union Oil Company Of California | Rear earth-iron-boron permanent magnets containing aluminum |
| US5223047A (en) * | 1986-07-23 | 1993-06-29 | Hitachi Metals, Ltd. | Permanent magnet with good thermal stability |
| US5230751A (en) * | 1986-07-23 | 1993-07-27 | Hitachi Metals, Ltd. | Permanent magnet with good thermal stability |
| DE3777523D1 (en) * | 1986-10-10 | 1992-04-23 | Philips Nv | MAGNETIC MATERIAL FROM IRON, BOR AND RARE EARTH METAL. |
| JPS63111603A (en) * | 1986-10-30 | 1988-05-16 | Santoku Kinzoku Kogyo Kk | Bond magnet |
| KR900006533B1 (en) * | 1987-01-06 | 1990-09-07 | 히다찌 긴조꾸 가부시끼가이샤 | Anisotropic magnetic powder, its magnet and manufacturing method thereof |
| US4983232A (en) | 1987-01-06 | 1991-01-08 | Hitachi Metals, Ltd. | Anisotropic magnetic powder and magnet thereof and method of producing same |
| JP2699426B2 (en) * | 1987-07-27 | 1998-01-19 | セイコーエプソン株式会社 | Actuator |
| JP2699438B2 (en) * | 1987-08-27 | 1998-01-19 | セイコーエプソン株式会社 | Actuator |
| JPS6472502A (en) * | 1987-09-11 | 1989-03-17 | Hitachi Metals Ltd | Permanent magnet for accelerating particle beam |
| JP2970809B2 (en) * | 1987-12-28 | 1999-11-02 | 信越化学工業株式会社 | Rare earth permanent magnet |
| JPH024942A (en) * | 1989-02-10 | 1990-01-09 | Toshiba Corp | Permanent magnetic alloy |
| US6319336B1 (en) | 1998-07-29 | 2001-11-20 | Dowa Mining Co., Ltd. | Permanent magnet alloy having improved heat resistance and process for production thereof |
| JP4585691B2 (en) * | 2000-02-02 | 2010-11-24 | ベイオトウ・アイアン・アンド・スティール・（グループ）・カンパニイ・リミテッド | Fe-BR type permanent magnet material containing Ce and Nd and / or Pr and method for producing the same |
-
1984
- 1984-04-18 JP JP59077857A patent/JPH06942B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9607743B2 (en) | 2013-04-22 | 2017-03-28 | Tdk Corporation | R-T-B based sintered magnet |
| DE102014105638B4 (en) | 2013-04-22 | 2024-10-17 | Tdk Corporation | R-T-B-based sintered magnet |
| US9070500B2 (en) | 2013-04-25 | 2015-06-30 | Tdk Corporation | R-T-B based permanent magnet |
| US9082537B2 (en) | 2013-04-25 | 2015-07-14 | Tdk Corporation | R-T-B based permanent magnet |
| US9111674B2 (en) | 2013-04-25 | 2015-08-18 | Tdk Corporation | R-T-B based permanent magnet |
| US9396852B2 (en) | 2013-04-25 | 2016-07-19 | Tdk Corporation | R-T-B based permanent magnet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60221549A (en) | 1985-11-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |