JPS6353202A - Production of rare earth element-iron type plastic magnetic material - Google Patents
Production of rare earth element-iron type plastic magnetic materialInfo
- Publication number
- JPS6353202A JPS6353202A JP61197274A JP19727486A JPS6353202A JP S6353202 A JPS6353202 A JP S6353202A JP 61197274 A JP61197274 A JP 61197274A JP 19727486 A JP19727486 A JP 19727486A JP S6353202 A JPS6353202 A JP S6353202A
- Authority
- JP
- Japan
- Prior art keywords
- rare earth
- powder
- earth element
- magnet material
- 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
- 239000004033 plastic Substances 0.000 title claims abstract description 16
- 229920003023 plastic Polymers 0.000 title claims abstract description 16
- 229910052742 iron Inorganic materials 0.000 title claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 10
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229910052761 rare earth metal Inorganic materials 0.000 title abstract description 4
- 150000002910 rare earth metals Chemical class 0.000 title abstract 3
- 239000000696 magnetic material Substances 0.000 title description 2
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 230000001590 oxidative effect Effects 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 229910000640 Fe alloy Inorganic materials 0.000 claims abstract description 8
- 238000000748 compression moulding Methods 0.000 claims abstract description 5
- 238000001746 injection moulding Methods 0.000 claims abstract description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 abstract description 21
- 238000000465 moulding Methods 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 2
- 229920000299 Nylon 12 Polymers 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229910000521 B alloy Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005007 epoxy-phenolic resin Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- 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、希土類−鉄系プラスチック磁石材料の製造方
法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for producing rare earth-iron plastic magnet materials.
従来の技術
永久磁石材料は、一般家庭電気製品から精密機器、自動
車部品に至るまで、広い分野にわたって使用されており
、電子機器の小形化、高効率化の要求に伴ない、その磁
気特性の向上が益々求められるようになっている。Conventional technology Permanent magnetic materials are used in a wide range of fields, from general home appliances to precision equipment and automobile parts.As electronic devices become smaller and more efficient, their magnetic properties are being improved. is becoming increasingly sought after.
希土類−鉄系の磁石材料についても種々の提案がなされ
ており、プラスチック磁石材料については、例えば、Ｎ
ｄ−Ｆｅ−Ｂ系の合金インゴットを溶製し、それを熱処
理し、粉砕し、樹脂と混合し、混合物を圧縮成形又は射
出成形することによって製造する方法が知られている。Various proposals have been made for rare earth-iron magnet materials, and for plastic magnet materials, for example, N
A manufacturing method is known in which a d-Fe-B alloy ingot is melted, heat treated, pulverized, mixed with a resin, and the mixture is compression molded or injection molded.
発明が解決しようとする問題点
ところが、上記従来知られている方法で、希土類−鉄系
プラスチック磁石材料を製造すると、その磁石材料の減
磁曲線が蛇状に曲ったりして、保磁力が著しく劣化し、
実用に供する永久磁石材料にはならなかった。その原因
は、微粉砕により粉末粒子に歪みが生じ、また、樹脂と
混合して圧縮成形又は射出成形するに際し、粉末粒子の
表面が酸化するためであると考えられる。Problems to be Solved by the Invention However, when a rare earth-iron plastic magnet material is manufactured using the conventionally known method described above, the demagnetization curve of the magnet material curves in a serpentine shape, resulting in a significant decrease in coercive force. deteriorate,
It was not made into a practical permanent magnet material. The reason for this is thought to be that the powder particles are distorted by pulverization, and the surfaces of the powder particles are oxidized when they are mixed with a resin and compression molded or injection molded.
本発明は、従来技術のこの様な欠点に鑑みてなされたも
ので、その目的は、従来技術の欠点を改善して、優れた
磁気特性の希土類−鉄系プラスチック磁石材料を製造す
る方法を提供することにある。The present invention has been made in view of these shortcomings of the prior art, and its purpose is to provide a method for manufacturing a rare earth-iron plastic magnet material with excellent magnetic properties by improving the shortcomings of the prior art. It's about doing.
問題点を解決するための手段
本発明の希土類−鉄系プラスチック磁石材料の製造方法
は、希土類−鉄系合金インゴットを粉砕し、非酸化性雰
囲気中で熱処理した後、樹脂を混合して圧縮成形又は射
出成形することを特徴とする。Means for Solving the Problems The method for manufacturing a rare earth-iron plastic magnet material of the present invention involves crushing a rare earth-iron alloy ingot, heat-treating it in a non-oxidizing atmosphere, mixing it with resin, and compression molding it. Alternatively, it is characterized by injection molding.
本発明の詳細な説明すると、本発明において使用される
希土類−鉄系合金は、一般式
％式％
（式中、Ｒは１種又はそれ以上の希土類元素を示し、Ｍ
はＭｎ、Ｎｉ、Ｃｏ、Ｔｉ、Ｚｒ、Ｈｆ、Ｖ、Ｎｂ、Ｃ
ｒ、Ｔａ、Ｍｏ及びＷから選択された１種又はそれ以上
の元素を示し、ＸはＢ、Ｃ。To explain the present invention in detail, the rare earth-iron alloy used in the present invention has the general formula % (where R represents one or more rare earth elements, M
are Mn, Ni, Co, Ti, Zr, Hf, V, Nb, C
represents one or more elements selected from r, Ta, Mo and W, and X is B, C.
Ｎ、ｓｉ、ｐ及びＡＩから選択された１種又はそれ以上
の元素を示し、α、β及びＴは、それぞれ０．６０≦α
≦０．８５、Ｏ≦β≦０．２０，０≦γ≦０．１５の値
を示す）
で示されるものである。Represents one or more elements selected from N, si, p, and AI, and α, β, and T are each 0.60≦α
≦0.85, O≦β≦0.20, 0≦γ≦0.15).
希土類−鉄系合金インゴットの粉砕は、常法によって行
われる。例えば、ショークラッシャーで粗粉砕し、次い
でディスククラッシャーで中程度に粉砕し、最後にジェ
ットミルにより微粉砕することによって数ミクロン程度
の粒径になるように行われる。粉砕によって得られた微
粉末は、次いで、非酸化性雰囲気中で熱処理するが、非
酸化性雰囲気としては、水素ガス、おるいは不活性ガス
、例えば、アルゴン、窒素などの下で行われ、好ましく
は、水素ガスの下で行われる。The rare earth-iron alloy ingot is pulverized by a conventional method. For example, it is coarsely pulverized with a show crusher, then moderately pulverized with a disk crusher, and finally finely pulverized with a jet mill to obtain a particle size of several microns. The fine powder obtained by grinding is then heat treated in a non-oxidizing atmosphere, where the non-oxidizing atmosphere is hydrogen gas, or an inert gas such as argon, nitrogen, etc. Preferably, it is carried out under hydrogen gas.
加熱処理された微粉末は、粉末同士が一部融着する場合
がおるので、ボールミル等によって解粒した後、バイン
ダーとして樹脂を添加、混合する。Since heat-treated fine powders may partially fuse together, a resin is added as a binder and mixed after disintegration using a ball mill or the like.
混合物は、圧縮成形又は射出成形して、所定の形状の希
土類−鉄系プラスチック磁石材料が得られる。この場合
使用するバインダーとしては、公知のものならば、いず
れのものでも使用できるが、例えば１、圧縮成形の場合
には、エポキシ樹脂、フェノール樹脂等の硬化性樹脂が
使用され、また、射出成形の場合には、ナイロン等のポ
リアミド、ポリプロピレン等のポリオレフィン、ポリエ
チレンテレフタレート等のポリエステルが有利に使用さ
れる。The mixture is compression molded or injection molded to obtain a rare earth-iron plastic magnet material in a predetermined shape. In this case, any known binder can be used; for example, 1. In the case of compression molding, curable resins such as epoxy resins and phenolic resins are used; In this case, polyamides such as nylon, polyolefins such as polypropylene, and polyesters such as polyethylene terephthalate are advantageously used.
作用
本発明においては、希土類−鉄系合金インゴットを粉砕
し、得られた微粉末は次いで熱処理される。粉砕に際し
て生じた歪みは、この熱処理により除去されるが、この
際熱処理を非酸化性雰囲気中で行うから、微粉末の表面
は酸化されることなく歪み除去が行われる。従って、こ
の熱処理された微粉末を用いて樹脂と混合し、圧縮成形
又は射出成形すると、優れた磁気特性を有するプラスチ
ック磁石材料となる。Operation In the present invention, a rare earth-iron alloy ingot is pulverized, and the resulting fine powder is then heat treated. Distortion caused during pulverization is removed by this heat treatment, but since the heat treatment is performed in a non-oxidizing atmosphere, the distortion is removed without oxidizing the surface of the fine powder. Therefore, when this heat-treated fine powder is mixed with a resin and compression molded or injection molded, a plastic magnet material with excellent magnetic properties is obtained.
実施例 次に、本発明を実施例によって説明する。Example Next, the present invention will be explained by examples.
実施例
Ｎ ｄＯ，１５Ｄ ”０．０１Ｆ ００．７０Ｃ００，
０５Ｔ ’ ０．０４Ｂ０．０５Ｎ０．０１な゛る組成
の合金を誘導炉により溶製し、インゴットを得た。この
インゴットをもちいて次の（ａ）、（ｂ）゛、（Ｃ）及
び（ｄ）の方法により処理してプラスチック磁石材料を
得た。Example N dO, 15D ”0.01F 00.70C00,
An alloy having a composition of 05T'0.04B0.05N0.01 was melted in an induction furnace to obtain an ingot. This ingot was processed according to the following methods (a), (b), (C) and (d) to obtain a plastic magnet material.
（ａ）上記合金組成のインゴットをショークラッシャー
、ディスククラッシャー及びジェットミルを用いて粉砕
し、平均粒径５．０μの粉末とした後、得られた粉末を
水素雰囲気中で１０８０’Ｃにおいて熱処理を行った。(a) An ingot with the above alloy composition is crushed using a show crusher, a disk crusher, and a jet mill to obtain a powder with an average particle size of 5.0μ, and then the resulting powder is heat treated at 1080'C in a hydrogen atmosphere. went.
熱処理により粉末が溶着して粒状になったのでボールミ
ルによって解粒し、得られた粉末にエポキシ樹脂を２．
０重量％添加、混合し、混合物を圧力１０トン／ｃＩＩ
Ｘで圧縮成形した。Due to the heat treatment, the powder was welded and became granular, so it was disintegrated using a ball mill, and epoxy resin was added to the resulting powder.
Add 0% by weight, mix, and press the mixture at a pressure of 10 tons/cII
Compression molding was performed using X.
（ｂ）上記合金組成のインゴットを（ａ）におけると同
様に処理して得られた粉末に、ナイロン１２を８重量％
添加、混合し、混合物を射出成形した。(b) Add 8% by weight of nylon 12 to the powder obtained by treating the ingot with the above alloy composition in the same manner as in (a).
Add, mix and injection mold the mixture.
（Ｃ）上記合金組成のインゴットを１１００″Ｃにおい
て１時間熱処理を行い、次いでインゴットをショークラ
ッシャー、ディスククラッシャー及びジェットミルを用
いて粉砕し、平均粒径５．Ｏμの粉末を得た。この粉末
に、エポキシ樹脂を２．０％添加、混合し、混合物を圧
力１０トン／ｄで圧縮成形した。(C) An ingot having the above alloy composition was heat-treated at 1100''C for 1 hour, and then the ingot was crushed using a show crusher, a disk crusher, and a jet mill to obtain a powder with an average particle size of 5.0μ.This powder 2.0% of epoxy resin was added and mixed, and the mixture was compression molded at a pressure of 10 tons/d.
（ｄ）上記合金組成のインゴットを（Ｃ）におけると同
様に処理して得られた粉末に、ナイロン１２を８重量％
添加、混合し、混合物を射出成形した。(d) 8% by weight of nylon 12 is added to the powder obtained by treating the ingot with the above alloy composition in the same manner as in (C).
Add, mix and injection mold the mixture.
これらのプラスチック磁石材料について、磁気特性を調
べたところ、第１表に示す通りの結果が得られた。When the magnetic properties of these plastic magnet materials were investigated, the results shown in Table 1 were obtained.
実施例２
Ｎｄ０．１５Ｆｅ０．７４Ｂ０．Ｉ Ｎｏ、０１なる組
成の合金を誘導炉により溶製し、インゴットを得た。こ
のインゴットを、上記（ａ）、（ｂ）、（Ｃ）及び（ｄ
＞の方法により処理してプラスチック磁石材料を得た。Example 2 Nd0.15Fe0.74B0. An alloy having a composition of I No. 01 was melted in an induction furnace to obtain an ingot. This ingot is used in the above (a), (b), (C) and (d).
＞A plastic magnet material was obtained.
これらのプラスチック磁石材料について、磁気特性を調
べたところ、第２表に示す通りの結果が得られた。When the magnetic properties of these plastic magnet materials were investigated, the results shown in Table 2 were obtained.
第２表
発明の効果
本発明によれば、希土類−鉄系合金インゴットを粉砕し
て得られた微粉末を、非酸化性雰囲気中で熱処理するか
ら、粉砕に際して生じた歪みは、微粉砕に表面が酸化さ
れることなく除去できる。Table 2 Effects of the Invention According to the present invention, the fine powder obtained by crushing the rare earth-iron alloy ingot is heat-treated in a non-oxidizing atmosphere. can be removed without being oxidized.
従って、上記の実施例における比較データからも明らか
なように、本発明によって得られた希土類−鉄系プラス
チック磁石材料は優れた磁気特性を有する。Therefore, as is clear from the comparative data in the above examples, the rare earth-iron plastic magnet material obtained by the present invention has excellent magnetic properties.
Claims (2)
雰囲気中で熱処理した後、樹脂を混合して圧縮成形又は
射出成形することを特徴とする希土類−鉄系プラスチッ
ク磁石材料の製造方法。(1) A method for producing a rare earth-iron plastic magnet material, which comprises pulverizing a rare earth-iron alloy ingot, heat-treating it in a non-oxidizing atmosphere, mixing it with a resin, and compression-molding or injection-molding the mixture.
徴とする特許請求の範囲第１項に記載の希土類−鉄系プ
ラスチック磁石材料の製造方法。(2) The method for producing a rare earth-iron plastic magnet material according to claim 1, wherein the non-oxidizing atmosphere is a hydrogen gas atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61197274A JPS6353202A (en) | 1986-08-25 | 1986-08-25 | Production of rare earth element-iron type plastic magnetic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61197274A JPS6353202A (en) | 1986-08-25 | 1986-08-25 | Production of rare earth element-iron type plastic magnetic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6353202A true JPS6353202A (en) | 1988-03-07 |
Family
ID=16371738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61197274A Pending JPS6353202A (en) | 1986-08-25 | 1986-08-25 | Production of rare earth element-iron type plastic magnetic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6353202A (en) |
Cited By (4)
| 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 |
| US4981532A (en) * | 1987-08-19 | 1991-01-01 | Mitsubishi Kinzoku Kabushiki Kaisha | Rare earth-iron-boron magnet powder and process of producing same |
| JP2009060847A (en) * | 2007-09-06 | 2009-03-26 | Kubota Corp | Implement |
| JP2015517023A (en) * | 2012-03-16 | 2015-06-18 | エラスティール | Method of manufacturing magnetocaloric element and magnetocaloric element obtained thereby |
-
1986
- 1986-08-25 JP JP61197274A patent/JPS6353202A/en active Pending
Cited By (5)
| 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 |
| JPH02109305A (en) * | 1988-10-18 | 1990-04-23 | Tokin Corp | Manufacture of polymer complex type rare earth magnet |
| JP2009060847A (en) * | 2007-09-06 | 2009-03-26 | Kubota Corp | Implement |
| JP2015517023A (en) * | 2012-03-16 | 2015-06-18 | エラスティール | Method of manufacturing magnetocaloric element and magnetocaloric element obtained thereby |
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