JP2001126906A - MANUFACTURING METHOD OF SmCo PERMANENT MAGNET POWDER, PERMANENT MAGNET POWDER AND BONDED MAGNET - Google Patents
MANUFACTURING METHOD OF SmCo PERMANENT MAGNET POWDER, PERMANENT MAGNET POWDER AND BONDED MAGNETInfo
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- JP2001126906A JP2001126906A JP30697299A JP30697299A JP2001126906A JP 2001126906 A JP2001126906 A JP 2001126906A JP 30697299 A JP30697299 A JP 30697299A JP 30697299 A JP30697299 A JP 30697299A JP 2001126906 A JP2001126906 A JP 2001126906A
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- Prior art keywords
- permanent magnet
- magnet powder
- smco
- aging treatment
- series
- Prior art date
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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
- H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
- H01F1/0558—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together bonded together
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、２−１７系ＳｍＣ
ｏ永久磁石粉体の製造方法と、その製造方法により得た
２−１７系ＳｍＣｏ永久磁石粉体、及びその２−１７系
ＳｍＣｏ永久磁石粉体を使用して得たボンド磁石に関す
るものである。[0001] The present invention relates to a 2-17 series SmC.
The present invention relates to a method for producing a permanent magnet powder, a 2-17 series SmCo permanent magnet powder obtained by the production method, and a bonded magnet obtained using the 2-17 series SmCo permanent magnet powder.
【０００２】[0002]
【従来の技術】従来、ＳｍＣｏ系永久磁石合金は鋳型を
用いて鋳造されるが、冷却速度が遅く、また部分的に冷
却速度が異なるために、合金インゴットの金属組織は不
均一になってしまう。特に、Ｚｒを含有する２−１７系
ＳｍＣｏ永久磁石合金インゴットでは、Ｚｒが凝縮して
いる大きな２−７相が偏析し易く、このような大きな２
−７相は熱処理により拡散し難い。従って、２−１７系
ＳｍＣｏ永久磁石合金をボンド磁石に用いるためには、
合金インゴットを１１５０〜１２５０℃の温度で数１０
時間の溶体化処理をして均一な金属組織にしてから時効
処理し、その後、粉砕して永久磁石粉体にする必要があ
った。2. Description of the Related Art Conventionally, an SmCo-based permanent magnet alloy is cast using a mold. However, since the cooling rate is low and the cooling rate is partially different, the metal structure of the alloy ingot becomes uneven. . In particular, in a 2-17-based SmCo permanent magnet alloy ingot containing Zr, a large 2-7 phase in which Zr is condensed tends to segregate.
The -7 phase is hardly diffused by the heat treatment. Therefore, in order to use a 2-17 series SmCo permanent magnet alloy for a bonded magnet,
The alloy ingot is heated for several tens of
It was necessary to perform a solution treatment for a long time to obtain a uniform metal structure, then perform an aging treatment, and then pulverize to a permanent magnet powder.
【０００３】[0003]
【発明が解決しようとする課題】しかし、高温で長時間
の溶体化処理は多大な電気エネルギーを要する。しか
も、このような溶体化処理を施しても完全に２−７相を
なくすことは非常に困難である。２−１７系ＳｍＣｏ永
久磁石において高い磁石特性を得るには、溶体化処理で
１−７相（ＴｂＣｕ7型構造）単一相にする必要がある
ことは良く知られていることであるが、この２−７相の
存在は滅磁曲線の角型性を悪くするため、磁石特性の最
大エネルギー積ＢＨｍａｘ値を低下させる。However, the solution treatment at a high temperature for a long time requires a large amount of electric energy. Moreover, it is very difficult to completely eliminate the 2-7 phase even if such a solution treatment is performed. It is well known that in order to obtain high magnet properties in a 2-17 series SmCo permanent magnet, it is necessary to form a 1-7 phase (TbCu 7 type structure) single phase by solution treatment, Since the presence of the 2-7 phase deteriorates the squareness of the demagnetizing curve, the maximum energy product BHmax of the magnet characteristics is reduced.
【０００４】本発明の目的は、２−１７系ＳｍＣｏ永久
磁石合金インゴットを従来の技術よりも低温で短時間の
溶体化処理で１−７相単一相の金属組織にすることがで
き、その結果、時効処理をして粉砕することにより減磁
曲線の角型牲が良くＢＨｍａｘ値が高い２−１７系Ｓｍ
Ｃｏ永久磁石粉体が得られる製造方法と、それにより得
た２−１７系ＳｍＣｏ永久磁石粉体、及びその２−１７
系ＳｍＣｏ永久磁石粉体を用いたボンド磁石を提供する
ことにある。An object of the present invention is to provide a 2-17 series SmCo permanent magnet alloy ingot with a 1-7 phase single phase metal structure by a solution treatment at a lower temperature and a shorter time than in the prior art. As a result, by aging and pulverizing, 2-17 series Sm having good squareness of demagnetization curve and high BHmax value was obtained.
Production method for obtaining Co permanent magnet powder, 2-17 series SmCo permanent magnet powder obtained thereby, and 2-17
An object of the present invention is to provide a bonded magnet using a system SmCo permanent magnet powder.
【０００５】[0005]
【課題を解決するための手段】本発明の２−１７系Ｓｍ
Ｃｏ永久磁石粉体は、最適組成でストリップキャスト法
により製造した永久磁石合金インゴットを、液相が生じ
る温度よりも低い温度領域で溶体化処理し、次に時効処
理を行い、その後、粗粉砕、微粉砕を行うことにより得
られる。さらに、本発明の２−１７系ＳｍＣｏ永久磁石
粉体と樹脂等を用いて成形、熱処理をすることによりボ
ンド磁石が得られる。Means for Solving the Problems 2-17 Sm of the present invention
Co permanent magnet powder is subjected to a solution treatment of a permanent magnet alloy ingot manufactured by a strip casting method with an optimum composition in a temperature range lower than a temperature at which a liquid phase is generated, and then an aging treatment is performed. Obtained by performing fine grinding. Further, a bonded magnet can be obtained by molding and heat-treating using the 2-17 series SmCo permanent magnet powder of the present invention and a resin.
【０００６】[0006]
【発明の実施の形態】以下本発明の詳細を説明する。２
−１７系ＳｍＣｏ永久磁石合金の組成は重量百分率で、
Ｒ２５．０〜２６．５％（但し、ＲはＳｍを中心とした
１種あるいは２種以上の希土類元素）、Ｆｅ１７．０〜
２１．０％、Ｃｕ７．０〜８．５％、Ｚｒｌ．８〜２．
３％、Ｃｏ残り、及び不可避不純物から成り、ストリッ
プキャスト法（薄帯連鋳法）により鋳造される。ストリ
ップキャスト法とは、単ロールまたは双ロールを用いて
溶湯を連続的に冷却して帯状あるいは片状（フレーク）
の合金インゴットを製造する鋳造方法であり、溶湯の冷
却速度は５００〜１００００℃／秒と、鋳型を用いる鋳
造方法に比べ格段に速く、部分的な冷却速度の違いも小
さいため、均一性に優れた金属組織が得られる。特に、
Ｚｒの添加によって生じる２−７相の析出に大きな相違
があり、鋳型を用いる鋳造方法で製造した合金インゴッ
トでは大きな２−７相が偏析しているが、ストリップキ
ャスト法で製造した合金インゴットでは微細な２−７相
が分散して析出している。従って、ストリップキャスト
法で製造したインゴットの２−７相は溶体化処理で拡散
消滅し易い。前記組成の合金インゴットの場合は、液相
が生じない１１００〜１１８０℃の温度範囲で数時間の
溶体化処理で２−７相は拡散消滅し、１−７相単一層の
金属組織が得られる。但し、Ｚｒ量が２．３％を越える
とこの溶体化処理条件で２−７相を完全に拡散消滅させ
ることはできなくなる。非酸化性雰囲気中において、合
金インゴットを前記条件で溶体化処理した後、７５０〜
９００℃の温度範囲での等温時効処理、引き続いて５０
０℃以下までの徐冷と５００℃以下での等温時効処理、
あるいは５００℃以下までの多段時効処理を行う。その
後、アトライター、ジェットミル等を用いた一般的な方
法により粗粉砕、微粉砕を行い、粒径数μｍ〜数１０μ
ｍの粉体にする。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below. 2
The composition of the -17 series SmCo permanent magnet alloy is by weight percentage,
R25.0 to 26.5% (where R is one or two or more rare earth elements centered on Sm), 17.0 to Fe
21.0%, Cu 7.0 to 8.5%, Zrl. 8-2.
It is composed of 3%, Co remaining, and inevitable impurities, and is cast by a strip casting method (thin strip continuous casting method). Strip casting is a process in which a single roll or twin rolls are used to continuously cool the molten metal to form a strip or flake.
This is a casting method for producing an alloy ingot of the above. The cooling rate of the molten metal is 500 to 10000 ° C./sec, which is much faster than the casting method using a mold, and the difference in the partial cooling rate is small. The obtained metal structure is obtained. In particular,
There is a large difference in the precipitation of the 2-7 phase caused by the addition of Zr, and a large 2-7 phase is segregated in the alloy ingot manufactured by the casting method using the mold, but fine in the alloy ingot manufactured by the strip casting method. 2-7 phases are dispersed and precipitated. Therefore, the 2-7 phase of the ingot produced by the strip casting method is easily diffused and disappeared by the solution treatment. In the case of the alloy ingot having the above composition, the 2-7 phase is diffused and disappeared by a solution treatment for several hours in a temperature range of 1100 to 1180 ° C. in which a liquid phase is not generated, and a metal structure of a 1-7 phase single layer is obtained. . However, if the Zr content exceeds 2.3%, the 2-7 phase cannot be completely diffused and annihilated under these solution treatment conditions. In a non-oxidizing atmosphere, the alloy ingot is subjected to solution treatment under the above conditions,
Isothermal aging in the temperature range of 900 ° C, followed by 50
Slow cooling to 0 ° C or less and isothermal aging treatment at 500 ° C or less,
Alternatively, a multi-stage aging treatment up to 500 ° C. is performed. Thereafter, coarse pulverization and fine pulverization are performed by a general method using an attritor, a jet mill or the like, and the particle size is several μm to several tens μm.
m powder.
【０００７】次に組成を前記のように限定した理由を述
べる。Ｒ２５．０〜２６．５％（但し、ＲはＳｍを中心
とした希土類元素の１種あるいは２種以上の組合せ）の
理由は、１−７相（ＴｂＣｕ7型構造）が得られる範囲
の中でも、Ｂｒ、ｉＨｃ共に高い値となり、滅磁曲線の
角型性も良くなるからである。Ｆｅ１７．０〜２１．０
％、Ｃｕ７．０〜８．５％は，この範囲の組合せにおい
て、Ｂｓ、Ｂｒを低下させずに高いｉＨ ｃが得られる
からである。Ｚｒが１．８％未満ではｉＨｃが低くなり
高いＢＨｍａｘは得られない。Next, the reasons for limiting the composition as described above will be described. The reason for the R25.0 to 26.5% (where R is one or a combination of two or more rare earth elements centering on Sm) is as follows because the 1-7 phase (TbCu 7 type structure) is obtained. , Br, and iHc are both high, and the squareness of the demagnetization curve is improved. Fe 17.0 to 21.0
% And 7.0 to 8.5% of Cu can provide a high iHc without decreasing Bs and Br in the combination in this range. If Zr is less than 1.8%, iHc decreases and high BHmax cannot be obtained.
【０００８】このようにして得た２−１７系ＳｍＣｏ永
久磁石粉体と樹脂及び潤滑材とを用いて成形、熱処理す
ることによりボンド磁石を得ることができる。The bonded magnet can be obtained by molding and heat-treating the thus obtained 2-17 series SmCo permanent magnet powder, resin and lubricant.
【０００９】[0009]
【実施例】以下実施例に基づいて詳細に説明する。組成
を種々変えて、ストリップキャスト法で２−１７系Ｓｍ
Ｃｏ永久磁石合金を製造した。それらのインゴット（フ
レーク）をＡｒ雰囲気中で１１５０℃で５時間溶体化処
理した。また、比較例として鋳型を用いた鋳造方法でも
インゴットを製造し、Ａｒ雰囲気中で１２００℃で４８
時間溶体化処理した。その後、各々を８５０℃で２時間
等温時効処理を行い、引き続いて５００℃までの徐冷
と、５００℃で４時間の等温時効処理を行った。次に、
粗粉砕の後、アトライターで微粉砕し、粒径約３０μｍ
の粉体にした。この粉体を磁場配向させてパラフィンで
円板状に固め、ＶＳＭで粉体の滅磁曲線を求め、磁石特
性を測定した。表１にそれらの組成と磁石特性を示す。
１〜７が本発明の実施例であり、最下段が比較例であ
る。実施例の２−１７系ＳｍＣｏ永久磁石粉体の磁石特
性は比較例に比べ滅磁曲線の角型牲が良く、高いＢＨｍ
ａｘ値を示していることがわかる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments will be described in detail below. By changing the composition variously, 2-17 series Sm
A Co permanent magnet alloy was produced. The ingots (flakes) were subjected to a solution treatment at 1150 ° C. for 5 hours in an Ar atmosphere. Further, as a comparative example, an ingot was manufactured by a casting method using a mold, and the ingot was manufactured at 1200 ° C. in an Ar atmosphere.
Time solution treatment. Thereafter, each was subjected to isothermal aging treatment at 850 ° C. for 2 hours, followed by slow cooling to 500 ° C. and isothermal aging treatment at 500 ° C. for 4 hours. next,
After coarse pulverization, finely pulverize with an attritor, particle size about 30 μm
Powder. The powder was oriented in a magnetic field and solidified into a disc shape with paraffin, and the demagnetization curve of the powder was determined by VSM, and the magnet characteristics were measured. Table 1 shows their compositions and magnet properties.
Examples 1 to 7 are examples of the present invention, and the lowermost row is a comparative example. The magnet properties of the 2-17 series SmCo permanent magnet powder of the example are better in the squareness of the demagnetization curve and higher than those of the comparative example.
It can be seen that the ax value is shown.
【００１０】さらに、これらの２−１７系ＳｍＣｏ永久
磁石粉体とエポキシ樹脂、及び潤滑剤を混合して、磁場
中成形、熱処理（キュア処理）を行い、ＢＨｍａｘ１８
ＭＧＯｅのボンド磁石を得た。Further, these 2-17 series SmCo permanent magnet powders, epoxy resin, and lubricant are mixed, molded in a magnetic field, heat-treated (cured), and subjected to BHmax18.
An MGOe bonded magnet was obtained.
【００１１】[0011]
【表１】 [Table 1]
【００１２】[0012]
【発明の効果】本発明は以上説明したような形態で実施
され、以下に記載されるような効果を奏する。本発明の
２−１７系ＳｍＣｏ永久磁石粉体の製造方法は、２−１
７系ＳｍＣｏ永久磁石合金インゴットを従来方法よりも
低い温度で短時間溶体化処理するので溶体化処理に要す
る電気エネルギーが少なくて済むという効果がある。さ
らに、溶体化処理した２−１７系ＳｍＣｏ永久磁石合金
インゴットは、２−７相が残存しない１−７相単一相の
金属組繊となるので、その後、時効処理をして粉砕する
ことにより、滅磁曲線の角型牲が良くエネルギー積ＢＨ
ｍａｘ値が高い２−１７系ＳｍＣｏ永久磁石粉体が得ら
れるため、この粉体を使用してボンド磁石を製造すれ
ば、高性能のボンド磁石が得られるという効果がある。The present invention is embodied in the form described above and has the following effects. The method for producing the 2-17 series SmCo permanent magnet powder of the present invention is described in 2-1.
Since the 7-system SmCo permanent magnet alloy ingot is solution-treated at a lower temperature than the conventional method for a short time, there is an effect that less electric energy is required for the solution treatment. Further, the solution-treated 2-17 series SmCo permanent magnet alloy ingot becomes a 1-7-phase single-phase metal braid in which no 2-7 phase remains, and is thereafter subjected to aging treatment and pulverized. Good demagnetization curve squareness and energy product BH
Since a 2-17 series SmCo permanent magnet powder having a high max value is obtained, if a bonded magnet is manufactured using this powder, a high-performance bonded magnet can be obtained.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ２２Ｆ 9/04 Ｂ２２Ｆ 9/10 9/10 Ｃ２２Ｃ 19/07 Ｅ Ｃ２２Ｃ 19/07 Ｃ２２Ｆ 1/02 Ｃ２２Ｆ 1/02 Ｈ０１Ｆ 1/08 Ａ Ｈ０１Ｆ 1/053 Ｃ２２Ｆ 1/00 Ａ 1/08 ６２１ // Ｃ２２Ｆ 1/00 ６６０Ｄ ６２１ ６８２ ６６０ ６９１Ｂ ６８２ ６９２Ｂ ６９１ ６９３Ｚ ６９２ Ｈ０１Ｆ 1/06 Ａ ６９３ 1/04 Ｂ (72)発明者 佐藤 守宏 千葉県千葉市美浜区中瀬１丁目８番地 セ イコーインスツルメンツ株式会社内 (72)発明者 中村 芳文 千葉県千葉市美浜区中瀬１丁目８番地 セ イコーインスツルメンツ株式会社内 Ｆターム(参考） 4K017 AA01 AA04 BA03 BB12 CA03 CA07 DA04 EA03 ED01 4K018 AA11 BA05 BC01 BD01 KA46 5E040 AA08 AA19 BB03 CA01 HB11 HB17 NN01 NN18 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B22F 9/04 B22F 9/10 9/10 C22C 19/07 E C22C 19/07 C22F 1/02 C22F 1 / 02 H01F 1/08 A H01F 1/053 C22F 1/00 A 1/08 621 // C22F 1/00 660D 621 682 660 691B 682 692B 691 693Z 692 H01F 1/06 A 693 1/04 B (72) Inventor Morihiro Sato 1-8-8 Nakase, Mihama-ku, Chiba-shi, Seiko Instruments Inc. (72) Inventor Yoshifumi Nakamura 1-8-8 Nakase, Mihama-ku, Chiba-shi, Chiba F-term in Seiko Instruments Inc. 4K017 AA01 AA04 BA03 BB12 CA03 CA07 DA04 EA03 ED01 4K018 AA11 BA05 BC01 BD01 KA46 5E 040 AA08 AA19 BB03 CA01 HB11 HB17 NN01 NN18
Claims (6)
６．５％（但し、ＲはＳｍを中心とした希土類元素の１
種あるいは２種以上の組合せ）、Ｆｅ１７．０〜２１．
０％、Ｃｕ７．０〜８．５％、Ｚｒｌ．８〜２．３％、
Ｃｏ残り、及び不可避不純物から成り、ストリップキャ
スト法（薄帯連鋳法）で製造された磁石合金を用いるこ
とを特徴とする２−１７系ＳｍＣｏ永久磁石粉体の製造
方法。1. The composition, in weight percentage, is R25.0-2.
6.5% (where R is one of rare earth elements centered on Sm)
Species or a combination of two or more), Fe 17.0 to 21.
0%, Cu 7.0 to 8.5%, Zrl. 8 to 2.3%,
A method for producing a 2-17 series SmCo permanent magnet powder, comprising using a magnet alloy composed of Co remaining and unavoidable impurities and produced by a strip casting method (a thin strip continuous casting method).
６．５％（但し、ＲはＳｍを中心とした希土類元素の１
種あるいは２種以上の組合せ）、Ｆｅ１７．０〜２１．
０％、Ｃｕ７．０〜８．５％、Ｚｒｌ．８〜２．３％、
Ｃｏ残り、及び不可避不純物から成り、ストリップキャ
スト法（薄帯連鋳法）で製造された磁石合金を用いて、
非酸化牲雰囲気中で、液相が生じない温度範囲での溶体
化処理、及び時効処理を行い、その後、租粉砕、微粉砕
を行うことを特徴とする２−１７系ＳｍＣｏ永久磁石粉
体の製造方法。2. The composition, in weight percent, is R25.0-2.
6.5% (where R is one of rare earth elements centered on Sm)
Species or a combination of two or more), Fe 17.0 to 21.
0%, Cu 7.0 to 8.5%, Zrl. 8 to 2.3%,
Using a magnet alloy made of Co remaining and unavoidable impurities and manufactured by strip casting (thin strip continuous casting method),
In a non-oxidizing atmosphere, a solution treatment in a temperature range where a liquid phase does not occur and an aging treatment are performed, and then, grinding and fine grinding are performed. Production method.
１８０℃であることを特徴とする請求項２記載の２−１
７系ＳｍＣｏ永久磁石粉体の製造方法。3. The temperature range of the solution treatment is 1100-1.
2-1. It is 180 degreeC, The 2-1 of Claim 2 characterized by the above-mentioned.
Method for producing 7-system SmCo permanent magnet powder.
度範囲での等温時効処理、引き続いて５００℃以下まで
の徐冷と５００℃以下での等温時効処理、あるいは５０
０℃以下までの多段時効処理であることを特徴とする請
求項２記載の２−１７系ＳｍＣｏ永久磁石粉体の製造方
法。4. The aging treatment includes isothermal aging treatment in a temperature range of 750 to 900 ° C., followed by slow cooling to 500 ° C. or less and isothermal aging treatment at 500 ° C. or less, or
The method for producing a 2-17 series SmCo permanent magnet powder according to claim 2, wherein the multi-stage aging treatment is performed to 0 ° C or lower.
６．５％（但し、ＲはＳｍを中心とした希土類元素の１
種あるいは２種以上の組合せ）、Ｆｅ１７．０〜２１．
０％、Ｃｕ７．０〜８．５％、Ｚｒｌ．８〜２．３％、
Ｃｏ残り、及び不可避不純物から成り、ストリップキャ
スト法（薄帯連鋳法）で製造された磁石合金を用いるこ
とを特徴とする２−１７系ＳｍＣｏ永久磁石粉体。5. The composition, in percentage by weight, of R25.0 to R2.
6.5% (where R is one of rare earth elements centered on Sm)
Species or a combination of two or more), Fe 17.0 to 21.
0%, Cu 7.0 to 8.5%, Zrl. 8 to 2.3%,
2-17 series SmCo permanent magnet powder comprising a Co alloy and an unavoidable impurity, and using a magnet alloy manufactured by a strip casting method (thin strip continuous casting method).
６．５％（但し、ＲはＳｍを中心とした希土類元素の１
種あるいは２種以上の組合せ）、Ｆｅ１７．０〜２１．
０％、Ｃｕ７．０〜８．５％、Ｚｒｌ．８〜２．３％、
Ｃｏ残り、及び不可避不純物から成り、ストリップキャ
スト法（薄帯連鋳法）で製造された磁石合金からなる２
−１７系ＳｍＣｏ永久磁石粉体を用いることを特徴とす
るボンド磁石。6. The composition, in percentage by weight, of R25.0 to R2.
6.5% (where R is one of rare earth elements centered on Sm)
Species or a combination of two or more), Fe 17.0 to 21.
0%, Cu 7.0 to 8.5%, Zrl. 8 to 2.3%,
Co-remaining and unavoidable impurities, 2 made of magnet alloy manufactured by strip casting (thin strip continuous casting method)
A bond magnet using -17 series SmCo permanent magnet powder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30697299A JP2001126906A (en) | 1999-10-28 | 1999-10-28 | MANUFACTURING METHOD OF SmCo PERMANENT MAGNET POWDER, PERMANENT MAGNET POWDER AND BONDED MAGNET |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30697299A JP2001126906A (en) | 1999-10-28 | 1999-10-28 | MANUFACTURING METHOD OF SmCo PERMANENT MAGNET POWDER, PERMANENT MAGNET POWDER AND BONDED MAGNET |
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| Publication Number | Publication Date |
|---|---|
| JP2001126906A true JP2001126906A (en) | 2001-05-11 |
Family
ID=17963492
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30697299A Pending JP2001126906A (en) | 1999-10-28 | 1999-10-28 | MANUFACTURING METHOD OF SmCo PERMANENT MAGNET POWDER, PERMANENT MAGNET POWDER AND BONDED MAGNET |
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| JP (1) | JP2001126906A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1263003A2 (en) * | 2001-05-29 | 2002-12-04 | Shin-Etsu Chemical Co., Ltd. | Preparation of a rare earth magnet alloy powder for a bonded magnet and rare earth bonded magnet therewith |
| WO2003040421A1 (en) * | 2001-11-09 | 2003-05-15 | Santoku Corporation | ALLOY FOR Sm-Co BASED MAGNET, METHOD FOR PRODUCTION THEREOF, SINTERED MAGNET AND BONDED MAGNET |
| RU2566090C1 (en) * | 2014-10-06 | 2015-10-20 | Открытое акционерное общество "Спецмагнит" | METHOD OF MATERIAL MANUFACTURING FOR PERMANENT MAGNETS OUT OF CAST ALLOYS BASED ON SYSTEM Sm-Co-Fe-Cu-Zr |
| CN112750613A (en) * | 2020-03-31 | 2021-05-04 | 河北泛磁聚智电子元件制造有限公司 | Preparation method of ultrahigh maximum magnetic energy product sintered samarium-cobalt magnet |
| CN113936905A (en) * | 2021-09-30 | 2022-01-14 | 宁波宁港永磁材料有限公司 | Preparation method of samarium cobalt permanent magnet material |
-
1999
- 1999-10-28 JP JP30697299A patent/JP2001126906A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1263003A2 (en) * | 2001-05-29 | 2002-12-04 | Shin-Etsu Chemical Co., Ltd. | Preparation of a rare earth magnet alloy powder for a bonded magnet and rare earth bonded magnet therewith |
| EP1263003A3 (en) * | 2001-05-29 | 2003-09-24 | Shin-Etsu Chemical Co., Ltd. | Preparation of a rare earth magnet alloy powder for a bonded magnet and rare earth bonded magnet therewith |
| US6793742B2 (en) | 2001-05-29 | 2004-09-21 | Shin-Etsu Chemical Co., Ltd. | Preparation of bonded rare earth magnet-forming alloy and bonded rare earth magnet composition |
| WO2003040421A1 (en) * | 2001-11-09 | 2003-05-15 | Santoku Corporation | ALLOY FOR Sm-Co BASED MAGNET, METHOD FOR PRODUCTION THEREOF, SINTERED MAGNET AND BONDED MAGNET |
| CN1297678C (en) * | 2001-11-09 | 2007-01-31 | 株式会社三德 | Alloy for Sm-Co based magnet, method for production thereof, sintered magnet and bonded magnet |
| RU2566090C1 (en) * | 2014-10-06 | 2015-10-20 | Открытое акционерное общество "Спецмагнит" | METHOD OF MATERIAL MANUFACTURING FOR PERMANENT MAGNETS OUT OF CAST ALLOYS BASED ON SYSTEM Sm-Co-Fe-Cu-Zr |
| CN112750613A (en) * | 2020-03-31 | 2021-05-04 | 河北泛磁聚智电子元件制造有限公司 | Preparation method of ultrahigh maximum magnetic energy product sintered samarium-cobalt magnet |
| CN113936905A (en) * | 2021-09-30 | 2022-01-14 | 宁波宁港永磁材料有限公司 | Preparation method of samarium cobalt permanent magnet material |
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