JPS61214505A - Manufacture of resin bonded permanent magnet - Google Patents
Manufacture of resin bonded permanent magnetInfo
- Publication number
- JPS61214505A JPS61214505A JP60054685A JP5468585A JPS61214505A JP S61214505 A JPS61214505 A JP S61214505A JP 60054685 A JP60054685 A JP 60054685A JP 5468585 A JP5468585 A JP 5468585A JP S61214505 A JPS61214505 A JP S61214505A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- mainly composed
- heat treatment
- permanent magnet
- squareness
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 229920005989 resin Polymers 0.000 title description 6
- 239000011347 resin Substances 0.000 title description 6
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 9
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 8
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 229910052752 metalloid Inorganic materials 0.000 claims abstract description 5
- 150000003624 transition metals Chemical class 0.000 claims abstract description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000001257 hydrogen Substances 0.000 claims abstract description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 3
- 229920000620 organic polymer Polymers 0.000 claims abstract description 3
- 238000001816 cooling Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- -1 composed of B Inorganic materials 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 230000005347 demagnetization Effects 0.000 abstract description 6
- 238000010298 pulverizing process Methods 0.000 abstract description 4
- 239000011261 inert gas Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229910017827 Cu—Fe Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000007704 transition 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)
- Powder Metallurgy (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Ｒ（Ｔ、Ｍ）ｚ （Ｒは希土類金属の一種もし
くは二種以上の混合物、ＴはＦｅ、 Ｃｏを主体とする
遷移金属１ＭはＢを主体とするメタロイド元素、Ｚ＝４
〜９）を主成分とする樹脂結合永久磁石の合金粉末の熱
処理方法に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to R(T, M)z (R is one or a mixture of two or more rare earth metals, T is a transition metal 1M mainly composed of Fe and Co) is a metalloid element mainly composed of B, Z=4
The present invention relates to a heat treatment method for an alloy powder of a resin-bonded permanent magnet containing as a main component 9) to 9).
［従来の技術］
希土類遷移金属合金において希土類金属と遷移合名の比
が２：１７である金属間化合物が理論的に極めて高い磁
気特性［（Ｂ旧＋ｅａｘ〜５ＧＨＧＯｅｌを有すること
が発見されて以来、同系化合物を主体とする永久磁石実
用合金を得る試みが種々実験されてきた。−例として５
ｓ−Ｃｏ−Ｃｕ−Ｆｅ系金属間化合物で（ＢＨ）■ａＸ
〜３ＧＨＧＯｅが達成され、さらにＮｄ−Ｆｅ系金属間
化合物で（８旧１１ａＸ 〜４０１４ＧＯｅの高磁気特
性が得られている。この組成合金は粉砕、磁場中配向圧
縮成形あるいは非磁場中圧縮成形、焼結、溶体化２時効
する焼結型永久磁石が一般的であった。[Prior Art] Since it was discovered that an intermetallic compound in which the ratio of rare earth metal to transition compound is 2:17 in a rare earth transition metal alloy has theoretically extremely high magnetic properties [(Bold+eax~5GHGOel), Various experiments have been carried out to obtain practical alloys for permanent magnets based mainly on similar compounds.-For example, 5
With s-Co-Cu-Fe intermetallic compound (BH)■aX
~3GHGOe has been achieved, and high magnetic properties of ~4014GOe have been achieved with Nd-Fe based intermetallic compounds (8 former 11aX~4014GOe). Sintered permanent magnets that undergo solidification and solution aging have been common.
しかし焼結型永久磁石は、工程が複雑でかつ最終的焼結
体が他の磁石材料に比較しで脆く、欠けやすい欠点があ
り、それに対して樹脂結合型永久磁石は、磁気特性がそ
の２０〜４０％と低下する半面、寸法精度０機械的加工
性１強度、磁気的安定性に優れ、複雑形状に成形できる
特長をもっている。However, sintered permanent magnets have the drawback that the process is complicated and the final sintered body is brittle and easily chipped compared to other magnet materials.On the other hand, resin-bonded permanent magnets have magnetic properties that are 20% Although the decrease is ~40%, it has excellent dimensional accuracy, 0 mechanical workability, 1 strength, and excellent magnetic stability, and can be molded into complex shapes.
［発明が解決しようとする問題点］
ところでＲ（Ｔ、Ｍ） （Ｒは希土類金属の□一種
もしくは二種以上の混合物、ＴはＦｅ、 Ｃｏを主体と
する遷移金属９ＭはＢを主体とするメタロイド元素、ｌ
＝４〜９）の一般式で示される組成からなる合金におい
て、特にその中でＴがＦｅである希土類鉄系合金を樹脂
結合型永久磁石にした場合、組成合金を５〜１００膚の
粒径に微粉砕した後、１ｉｆｔ場中配向あるいは非磁場
中で圧縮成形（ＣＯＩＤｒｅＳＳｉＯｎ−ｍｏｌｄ）ま
たは射出成形（Ｉｎｊｅｃｔｉｏｎ−ａ＋ｏｌｄ）によ
り形成するものであるが、得られた樹脂結合型永久磁石
の磁気特性は、残留磁化、保磁力共大幅に低下し、その
４πｌ−Ｈ減磁曲線の角型性が大きく劣化する欠点があ
った。[Problems to be solved by the invention] By the way, R(T, M) (R is one or a mixture of two or more rare earth metals, T is a transition metal mainly composed of Fe and Co, and 9M is mainly composed of B. metalloid element, l
= 4 to 9) In particular, when a rare earth iron alloy in which T is Fe is used as a resin bonded permanent magnet, the composition alloy has a particle size of 5 to 100 mm. After finely pulverizing the magnet, it is formed by compression molding (COIDreSSiOn-mold) or injection molding (Injection-a+old) in a 1if orientation field or in a non-magnetic field, but the magnetic properties of the obtained resin-bonded permanent magnet are as follows. , residual magnetization and coercive force are significantly reduced, and the squareness of the 4πl-H demagnetization curve is greatly deteriorated.
本発明はこの点を考慮して、樹脂結合型永久磁石の４π
Ｉ−Ｈ減磁曲線の角型性が大きく劣化することを防止す
ることのできる製造方法を提供することを目的とする。Taking this point into consideration, the present invention has developed a resin-bonded permanent magnet with 4π
It is an object of the present invention to provide a manufacturing method that can prevent the squareness of the I-H demagnetization curve from deteriorating significantly.
Ｅ問題点を解決するための手段］
本発明はＲ（Ｔ、Ｍ）ｚ （Ｒは希土類金属の一種もし
くは二種以上の混合物、ＴはＦｅ、 Ｃｏを主体とする
遷移金属１ＭはＢを主体とするメタロイド元素、Ｚ＝４
〜９）の一般式で示される組成からなる合金を、５〜１
００Ｒの粒径に粉砕後、水素雰囲気、不活性雰囲気もし
くは真空中にて３００〜１，１００℃の温度にて加熱処
理し冷却した後に、有機ポリマー等にて固定することを
特徴とした樹脂結合永久磁石の製造方法である。Means for Solving Problem E] The present invention is based on R(T,M)z (R is one or a mixture of two or more rare earth metals, T is a transition metal mainly composed of Fe, Co, and 1M is mainly composed of B. metalloid element, Z=4
~9) An alloy having a composition represented by the general formula 5~1
Resin bonding characterized by pulverizing to a particle size of 00R, heat treatment at a temperature of 300 to 1,100°C in a hydrogen atmosphere, inert atmosphere, or vacuum, cooling, and fixing with an organic polymer, etc. This is a method for manufacturing permanent magnets.
加熱処Ｉ！！温度が３００℃以下では粉砕工程で受けた
微粉末の機械的歪を除去することができず、１．１００
℃以上では個々の粒子が溶着してしまうので、この範囲
に処理温度を設定することが好ましく、樹脂成形方法と
しては圧縮成形、射出成形とも適用できる。ざらに粉末
焼結機再度粉砕し、加熱処理することも効果的である。Heat treatment I! ! If the temperature is below 300°C, it will not be possible to remove the mechanical strain of the fine powder during the grinding process, and the temperature will be 1.100°C.
Since the individual particles will be welded at temperatures above .degree. C., it is preferable to set the treatment temperature within this range, and both compression molding and injection molding can be applied as the resin molding method. It is also effective to roughly re-pulverize the powder using a powder sintering machine and heat treat it.
［実施例］
Ｎｄ Ｐｒ ｏｙ （Ｆｅ Ｂ ）の０．７５ ０．
２ ０．０５ ０．９２ ０．０Ｂ ６．０組成の
鋳造合金をアーク溶解後、窒素気流中ハンマーミルによ
り〜２０膚に微粉砕した粉末を、（１）そのままエポキ
シ樹脂を３％混合して磁場成形した試料と、
（２） １，０００℃、１時間加熱処理し冷却した後、
エポキシ樹脂を３％混合して磁場成形した試料の、
磁気特性を測定したところ、第１表の結果が得られた。[Example] 0.75 0. of Nd Pr oy (Fe B ).
2 0.05 0.92 0.0B After arc melting a cast alloy with a composition of 6.0, finely pulverize the powder to ~20 mm using a hammer mill in a nitrogen stream, (1) mix 3% of epoxy resin as it is, (2) After heat treatment at 1,000℃ for 1 hour and cooling,
When the magnetic properties of a sample magnetically molded with 3% epoxy resin mixed were measured, the results shown in Table 1 were obtained.
第１表
以上のように、微粉砕した粉末をそのまま樹脂成形した
永久磁石（１）は、残留磁化Ｂｒ、および保磁力ｉＨｃ
共に大幅に低下し減磁曲線の角型性が劣化するのに対し
、本発明により加熱処理した後樹脂成形した永久磁石（
２１は、残留磁化Ｂｒ、および保磁力ｉＨｃ共本来の磁
気特性を維持できることが判明した。As shown in Table 1, the permanent magnet (1), which is made by resin molding finely pulverized powder, has a residual magnetization Br and a coercive force iHc.
In contrast, the squareness of the demagnetization curve deteriorates significantly, whereas the permanent magnet (
It was found that No. 21 can maintain the original magnetic properties in both the residual magnetization Br and the coercive force iHc.
［発明の効果］
本発明により、樹脂成形する前工程で、加熱処理し冷却
することにより粉砕工程で受けた微粉末の機械的歪を除
去することができ、減磁曲線の角型性を大幅に改善する
ことが可能となった。本発明は、特に希土類鉄系合金を
樹脂結合型永久磁石に適用した場合に効果的である。[Effects of the Invention] According to the present invention, the mechanical distortion of the fine powder caused in the pulverization process can be removed by heat treatment and cooling in the process before resin molding, and the squareness of the demagnetization curve can be significantly improved. It became possible to improve. The present invention is particularly effective when a rare earth iron alloy is applied to a resin-bonded permanent magnet.
Claims (1)
以上の混合物、ＴはＦｅ、Ｃｏを主体とする遷移金属、
ＭはＢを主体とするメタロイド元素、ｚ＝４〜９）の一
般式で示される組成からなる合金を、５〜１００μｍの
粒径に粉砕後、水素雰囲気、不活性雰囲気もしくは真空
中にて３００〜１，１００℃の温度にて加熱処理し冷却
した後に、有機ポリマー等にて固定することを特徴とし
た樹脂結合永久磁石の製造方法。R(T,M)_z (R is one kind or a mixture of two or more rare earth metals, T is a transition metal mainly composed of Fe and Co,
M is a metalloid element mainly composed of B, and an alloy consisting of a composition represented by the general formula of z = 4 to 9) is ground to a particle size of 5 to 100 μm, and then pulverized for 300 minutes in a hydrogen atmosphere, an inert atmosphere, or a vacuum. A method for producing a resin-bonded permanent magnet, which comprises heat-treating at a temperature of ~1,100°C, cooling, and then fixing with an organic polymer or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60054685A JPS61214505A (en) | 1985-03-20 | 1985-03-20 | Manufacture of resin bonded permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60054685A JPS61214505A (en) | 1985-03-20 | 1985-03-20 | Manufacture of resin bonded permanent magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61214505A true JPS61214505A (en) | 1986-09-24 |
Family
ID=12977646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60054685A Pending JPS61214505A (en) | 1985-03-20 | 1985-03-20 | Manufacture of resin bonded permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61214505A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4981532A (en) * | 1987-08-19 | 1991-01-01 | Mitsubishi Kinzoku Kabushiki Kaisha | Rare earth-iron-boron magnet powder and process of producing same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59219904A (en) * | 1983-05-30 | 1984-12-11 | Sumitomo Special Metals Co Ltd | Permanent magnet material |
| JPS61179801A (en) * | 1985-02-05 | 1986-08-12 | Sumitomo Special Metals Co Ltd | Alloy powder for bond magnet and its production |
-
1985
- 1985-03-20 JP JP60054685A patent/JPS61214505A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59219904A (en) * | 1983-05-30 | 1984-12-11 | Sumitomo Special Metals Co Ltd | Permanent magnet material |
| JPS61179801A (en) * | 1985-02-05 | 1986-08-12 | Sumitomo Special Metals Co Ltd | Alloy powder for bond magnet and its production |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4981532A (en) * | 1987-08-19 | 1991-01-01 | Mitsubishi Kinzoku Kabushiki Kaisha | Rare earth-iron-boron magnet powder and process of producing same |
| US5110374A (en) * | 1987-08-19 | 1992-05-05 | Mitsubishi Materials Corporation | Rare earth-iron-boron magnet powder and process of producing same |
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