JPH0222803A - Resin bonded rare earth magnet - Google Patents
Resin bonded rare earth magnetInfo
- Publication number
- JPH0222803A JPH0222803A JP63173553A JP17355388A JPH0222803A JP H0222803 A JPH0222803 A JP H0222803A JP 63173553 A JP63173553 A JP 63173553A JP 17355388 A JP17355388 A JP 17355388A JP H0222803 A JPH0222803 A JP H0222803A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- magnetic powder
- mixture
- magnetic
- powder
- 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 5
- 239000011347 resin Substances 0.000 title claims abstract description 5
- 229910052761 rare earth metal Inorganic materials 0.000 title claims description 7
- 150000002910 rare earth metals Chemical class 0.000 title claims description 7
- 239000006247 magnetic powder Substances 0.000 claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 3
- 229910052772 Samarium Inorganic materials 0.000 claims abstract description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 3
- 239000011230 binding agent Substances 0.000 abstract description 2
- 238000000748 compression moulding Methods 0.000 abstract description 2
- 239000003822 epoxy resin Substances 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract description 2
- 238000001746 injection moulding Methods 0.000 abstract description 2
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002265 prevention Effects 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］ 本発明は樹脂結合型希土類磁石に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a resin bonded rare earth magnet.
［従来の技術］
従来、樹脂結合型希土類型Ｎｉ１石に用いられる磁性粉
末はその多くがＳｍ−Ｃｏ系粉末であったが、１９８２
年にＧＭ社が急冷薄帯法によってＮｄ−Ｆｅ−Ｂを基本
組成とする磁性粉末を開発したことによりＮｄ−Ｆｅ−
Ｂ系の樹脂結合型希土類磁石が製造されるようになった
。[Prior Art] Conventionally, most of the magnetic powders used for resin-bonded rare earth Ni1 stones were Sm-Co powders, but in 1982
In 2009, GM developed a magnetic powder with a basic composition of Nd-Fe-B using the quenched ribbon method.
B-based resin-bonded rare earth magnets have begun to be manufactured.
一般にＳｍ−Ｃｏ系磁性粉末とＮｄ−Ｆｅ−Ｂ系磁性粉
末では磁気性能的に差があり、特に等方性磁石では約２
倍の差があるが（Ｓｉｎ −Ｃｏ系：（ＢＨ）ｗａｘ
＝ ５ ＭＧＯｅ、 Ｎ ｄ −Ｆ ｅ −Ｂ系： （
ＢＨ）＋ｎａｘ＝ １０ ＭＧＯｅ） 、それぞれの粉
末の製造過程が異なることと、Ｎｄ−Ｆｅ−Ｂ系の粉末
は非常に蹟やすいために最終製品において防錆のための
コーティングが必要とされることから、製造工程上完全
に分離されている。つまり、Ｓｍ−Ｃｏ系磁石とＮｄ−
Ｆｅ−Ｂ系磁石は全く別のものとして扱われてきた。In general, there is a difference in magnetic performance between Sm-Co magnetic powder and Nd-Fe-B magnetic powder, and in particular, in isotropic magnets, about 2
Although there is a double difference (Sin-Co system: (BH) wax
= 5 MGOe, N d -F e -B system: (
BH) + nax = 10 MGOe), because the manufacturing process of each powder is different, and because Nd-Fe-B powder is very easy to damage, a coating for rust prevention is required in the final product. , are completely separated in the manufacturing process. In other words, Sm-Co magnet and Nd-
Fe-B magnets have been treated as something completely different.
【発明が解決しようとする課題）
前述のようにＳｍ−Ｃｏ系とＮｄ−Ｆｅ−Ｂ系では磁気
性能的に差があり、製造上の理由からその中間を埋める
性能の磁石が作られていなかった。そのために、実際の
使用にあたっては設計上の最適特性とは少しズした性能
をもつ磁石を使用することになり、モータ、あるいはス
ピーカにおける磁石以外の部品の特性を変えることによ
って対応していた。[Problem to be solved by the invention] As mentioned above, there is a difference in magnetic performance between the Sm-Co system and the Nd-Fe-B system, and for manufacturing reasons, a magnet with performance that fills the gap between them has not been manufactured. Ta. For this reason, in actual use, magnets with performance slightly different from the designed optimum characteristics were used, and this was countered by changing the characteristics of components other than the magnets in the motor or speaker.
本発明はこのような問題を解決するものであり、その目
的はＳｍ−Ｃｏ系磁石とＮｄ−Ｆｅ−Ｂ系磁石の中間の
性能を持つ樹脂結合型希土類型磁石を与＾ることにある
。The present invention is intended to solve these problems, and its purpose is to provide a resin-bonded rare earth magnet with performance intermediate between Sm--Co magnets and Nd--Fe--B magnets.
〔課題を解決するための手段１
本発明は、原料粉末として基本組成がＳｍ及びＣｏから
なる磁性粉末と基本組成がＮｄ、Ｆｅ、Ｂからなる磁性
粉末の混合物を用いることを特徴とする。[Means for Solving the Problems 1] The present invention is characterized in that a mixture of a magnetic powder having a basic composition of Sm and Co and a magnetic powder having a basic composition of Nd, Fe, and B is used as a raw material powder.
Ｓｍ−Ｃｏ系磁性粉末と、Ｎｄ−Ｆｅ−Ｂ系磁性扮末を
任意の割合で混合したものに、バインダーとして有機物
樹脂を添加し、磁場中あるいは無６Ｒ場の状態で圧縮、
射出、押し出し等の成型を行うことによりＳｍ−Ｃｏ系
磁石とＮｄ−Ｆｅ−Ｂ系磁石の中間の性能の磁石を得る
ことが出来る。An organic resin is added as a binder to a mixture of Sm-Co magnetic powder and Nd-Fe-B magnetic powder in any ratio, and the mixture is compressed in a magnetic field or without a 6R field.
By performing molding such as injection or extrusion, it is possible to obtain a magnet with performance intermediate between Sm--Co magnets and Nd--Fe--B magnets.
［実施例］ 以下に本発明について実施例をもとに詳細に説明する。[Example] The present invention will be described in detail below based on examples.
（実施例１）
急冷薄帯法によって得られたＮｄ−Ｆｅ−Ｂの磁性粉末
（平均粒径＝２５μｍ、最大径＝１７７μｍ）とＳｍ−
Ｃｏ系の磁性粉末（平均粒径＝２５μｍ、最大径＝１７
７μｍ）をＯ：ｌ、１：２、ｌ：１．２：１、ｌ二〇の
割合でそれぞれスクリュウ型混合機に入れよく混合し５
種類の原料粉末を得た、原料粉末にエポキシ樹脂を２ｗ
ｔ％加え混線し無磁場状態で圧縮成型を行なった。成形
体は１５０ｃで１時間焼成した後、磁気特性を測定した
。(Example 1) Nd-Fe-B magnetic powder (average particle size = 25 μm, maximum diameter = 177 μm) obtained by the quenched ribbon method and Sm-
Co-based magnetic powder (average particle size = 25 μm, maximum diameter = 17
7μm) in the ratio of O:l, 1:2, l:1.2:1, l20 respectively into a screw type mixer and mix well.
Different types of raw material powder were obtained, and 2w of epoxy resin was added to the raw material powder.
Compression molding was performed in the absence of a magnetic field with addition of t% crosstalk. The molded body was fired at 150c for 1 hour, and then its magnetic properties were measured.
結果を第１表に示す。The results are shown in Table 1.
第 １ 表
注） ＮｏｌはＳ ｍ −Ｃｏ系単体、 Ｎｏ５はＮｄ
−Ｆｅ−Ｂ系単体である。Table 1 Note: No.1 is S m -Co system, No.5 is Nd.
-Fe-B system alone.
第１表よりＳｍ−Ｃｏ系とＮｄ−Ｆｅ−Ｂ系磁性扮末を
混合することによりそれぞれの性能の中間の性能が得ら
れることがわかる。It can be seen from Table 1 that by mixing the Sm--Co and Nd--Fe--B based magnetic powders, a performance intermediate between the respective performances can be obtained.
（実施例２）
実施例１と同様の５種類の磁性粉末を用いて射出成形を
行い外形１８ｍｍ、内径１５ｍｍ、厚み３ｍｍのリング
状磁石を得た。(Example 2) Injection molding was performed using the same five types of magnetic powder as in Example 1 to obtain a ring-shaped magnet with an outer diameter of 18 mm, an inner diameter of 15 mm, and a thickness of 3 mm.
それぞれの磁石を用いてモータを作りモータ特性を測定
した、結果を第１図に示す。Motors were made using each magnet and the motor characteristics were measured. The results are shown in Figure 1.
第１図よりモータ特性においてもＳｍ−Ｃｏ系磁性粉末
とＮｄ−Ｆｅ−Ｂ系磁性粉末を混合することによってそ
れぞれの粉末の中間の特性が得られることがわかる。It can be seen from FIG. 1 that by mixing Sm--Co magnetic powder and Nd--Fe--B magnetic powder, motor characteristics intermediate between those of the respective powders can be obtained.
（実施例３）
Ｎｄ−Ｆｅ−Ｂ系の異方性磁石（ＧＭ社−ＭＱ３タイプ
）を粉砕してＮｄ−Ｆｅ−Ｂ系の異方性磁性粉末を作っ
た。この異方性粉末を用いて実施例１と同様に５種類の
粉末を準備し、磁場中で圧粉成形いかく成形体の磁気性
能を測定した。結果を第２表に示す。(Example 3) A Nd-Fe-B-based anisotropic magnet (GM company MQ3 type) was pulverized to produce an Nd-Fe-B-based anisotropic magnetic powder. Using this anisotropic powder, five types of powder were prepared in the same manner as in Example 1, and the magnetic performance of the compacts that were compacted in a magnetic field was measured. The results are shown in Table 2.
第 ２ 表
注） ＮｏｌはＳｍ−Ｃｏ系単体、Ｎｏ５はＮｄ−Ｆｅ
−Ｂ系単体である。Table 2 Note: No.1 is Sm-Co, No.5 is Nd-Fe.
- It is a single B series.
第２表より異方性磁石においてもＳｍ−Ｃｏ系とＮｄ−
Ｆｅ−Ｂ系磁性粉末を混合することによりそれぞれの性
能の中間の性能が得られることがわかる。Table 2 shows that Sm-Co and Nd-
It can be seen that by mixing Fe-B magnetic powder, a performance intermediate between the respective performances can be obtained.
［発明の効果］
以上述べたように本発明により従来得ることが出来なか
ったＳｍ−Ｃｏ系とＮｄ−Ｆｅ−Ｂ系磁石の中間の性能
をもつ磁石が容易に得られることになり、実使用の場面
において実使用にたいして最適特性を持った樹脂結合型
磁石を提供することが可能となった。[Effects of the Invention] As described above, according to the present invention, a magnet with performance intermediate between Sm-Co and Nd-Fe-B magnets, which could not be obtained conventionally, can be easily obtained, making it suitable for practical use. It has now become possible to provide a resin-bonded magnet with optimal characteristics for actual use.
第１図は本発明による樹脂結合型磁石を用いたモータの
特性図である。
・５ｓ−Ｃｏ系磁石（従来法）の特性
・本発明によるＮｄ−Ｆｅ−Ｂ系： ５ＩＩ−Ｃｏ系＝
１＝２の混合物の特性
・本発明によるＮｄ−Ｆｅ−Ｂ系：５ＬＩＩ−Ｃｏ系＝
ｌ：ｌの混合物の特性
・本発明によるＮｄ−Ｆｅ−Ｂ系： ５ＩＩＩ−Ｃｏ系
＝２：ｌの混合物の特性
・Ｎｄ−Ｆｅ−Ｂ系磁石（従来法）の特性以上
出願人 セイコーエプソン株式会社
代理人 弁理士 鈴 木 喜三部（他１名）０Ｄ
菊ｏ ｂｏ。
Ｉずルスし子（ＰＰＳ）FIG. 1 is a characteristic diagram of a motor using a resin-bonded magnet according to the present invention.・Characteristics of 5s-Co magnet (conventional method) ・Nd-Fe-B system according to the present invention: 5II-Co system =
Characteristics of 1=2 mixture Nd-Fe-B system according to the present invention: 5LII-Co system =
Characteristics of the l:l mixture - Nd-Fe-B system according to the present invention: Characteristics of the 5III-Co system = 2:l mixture - Characteristics of the Nd-Fe-B magnet (conventional method) Applicant Seiko Epson Co., Ltd. Company agent Patent attorney Kisanbe Suzuki (and 1 other person) 0D Kikubo. I'm Zurushiko (PPS)
Claims (1)
類磁石において、原料粉末として基本組成がＳｍ及びＣ
ｏからなる磁性粉末と基本組成がＮｄ、Ｆｅ、Ｂからな
る磁性粉末の混合物を用いることを特徴とした樹脂結合
型希土類磁石。In a resin-bonded rare earth magnet obtained by adding organic resin to magnetic powder, the basic composition is Sm and C as the raw material powder.
A resin-bonded rare earth magnet characterized by using a mixture of a magnetic powder consisting of o and a magnetic powder having a basic composition of Nd, Fe, and B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63173553A JPH0222803A (en) | 1988-07-11 | 1988-07-11 | Resin bonded rare earth magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63173553A JPH0222803A (en) | 1988-07-11 | 1988-07-11 | Resin bonded rare earth magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0222803A true JPH0222803A (en) | 1990-01-25 |
Family
ID=15962675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63173553A Pending JPH0222803A (en) | 1988-07-11 | 1988-07-11 | Resin bonded rare earth magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0222803A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6425961B1 (en) | 1998-05-15 | 2002-07-30 | Alps Electric Co., Ltd. | Composite hard magnetic material and method for producing the same |
-
1988
- 1988-07-11 JP JP63173553A patent/JPH0222803A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6425961B1 (en) | 1998-05-15 | 2002-07-30 | Alps Electric Co., Ltd. | Composite hard magnetic material and method for producing the same |
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