JPH02220413A - Rare earth alloy powder for bond magnet and bond magnet - Google Patents
Rare earth alloy powder for bond magnet and bond magnetInfo
- Publication number
- JPH02220413A JPH02220413A JP1040180A JP4018089A JPH02220413A JP H02220413 A JPH02220413 A JP H02220413A JP 1040180 A JP1040180 A JP 1040180A JP 4018089 A JP4018089 A JP 4018089A JP H02220413 A JPH02220413 A JP H02220413A
- Authority
- JP
- Japan
- Prior art keywords
- rare earth
- alloy powder
- bond magnet
- earth alloy
- 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
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 32
- 239000000956 alloy Substances 0.000 title claims abstract description 32
- 239000000843 powder Substances 0.000 title claims abstract description 28
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 21
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 5
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 5
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims abstract 3
- 239000011230 binding agent Substances 0.000 claims description 9
- 239000013078 crystal Substances 0.000 abstract description 4
- 230000004907 flux Effects 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 238000000465 moulding Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 4
- -1 fluororesin Polymers 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229910052718 tin 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、ボンド磁石用希土類合金粉末およびそれを使
用したボンド磁石に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rare earth alloy powder for bonded magnets and a bonded magnet using the same.
5s−Co系などの希土類合金粉末を使用したボンド磁
石は、高性能と形杖複雑化を実現し得ることとの面で一
般家電製品からロボット、大型コンピュータの周辺に至
るまでの広い分野で利用されている。Bonded magnets using rare earth alloy powders such as 5S-Co are used in a wide range of fields, from general home appliances to robots and large computer peripherals, due to their high performance and ability to create complex shapes. has been done.
しかるに、上記の希土類合金粉末は、高価なG。However, the rare earth alloy powder described above is expensive.
を含有しているため、できるだけCoをPeのような安
価な元素に置換えることが試みられている。このような
試みの中で、希土5l−Fe系にTiとZrまたはIf
とを添加した希土類合金が提案されている(特開昭63
−248103号)。Therefore, attempts have been made to replace Co with an inexpensive element such as Pe as much as possible. In such attempts, Ti and Zr or If were added to the rare earth 5l-Fe system.
A rare earth alloy has been proposed with the addition of
-248103).
しかしながら、この合金は安価ではあるものの、高性能
磁石の面では充分でない。However, although this alloy is inexpensive, it is not sufficient in terms of high performance magnets.
そこで、本発明の目的は、この問題点を解消し、安価で
、優れた磁気特性を有する希土類合金粉末およびそれを
使用したボンド磁石を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve this problem and provide a rare earth alloy powder that is inexpensive and has excellent magnetic properties, and a bonded magnet using the same.
〔課題を解決するための手段および作用〕本発明は、上
記目的を達成する手段として、希土類金属のうちの少な
くとも1種のR,Mnおよび741、V、W、Moのう
ちの少なくとも1種のM並びにFeおよび不可避不純物
からなり、式:%式%)
で表わされる組成を有し、平均粒径が3000Å以下の
微結晶組織を有するボンド磁石用希土類合金粉末を提供
するものである。[Means and effects for solving the problems] The present invention provides at least one of rare earth metals R and Mn and at least one of 741, V, W, and Mo as a means to achieve the above object. The present invention provides a rare earth alloy powder for bonded magnets, which is composed of M, Fe, and unavoidable impurities, has a composition expressed by the formula: %, and has a microcrystalline structure with an average grain size of 3000 Å or less.
また、本発明は、上記合金粉末とバインダーとからなる
ボンド磁石を提供するものでもある。The present invention also provides a bonded magnet comprising the above alloy powder and a binder.
本発明において、MnおよびMは保磁力を向上させるた
めに添加され、Xおよび/またはyが0.5より大きい
と飽和磁化の低下が著しくなる。また、Fe、 Mnお
よびMの合計量を表わす2が、11未満では残留磁束密
度が低下し、一方、13を超えると、保磁力および残留
磁束密度が低下する。In the present invention, Mn and M are added to improve coercive force, and when X and/or y are larger than 0.5, the saturation magnetization decreases significantly. If 2, which represents the total amount of Fe, Mn, and M, is less than 11, the residual magnetic flux density will decrease, while if it exceeds 13, the coercive force and residual magnetic flux density will decrease.
このような組成を有する希土類合金粉末は、通常、粒度
が30メツシユ(JIS 、以下、同様)以下、好まし
くは60メツシユ以下で、ボンド磁石製造に供される。Rare earth alloy powder having such a composition is usually used for bonded magnet production with a particle size of 30 mesh (JIS, hereinafter the same) or less, preferably 60 mesh or less.
そして、この粉末は平均粒径が3000Å以下の微結晶
組織を有することが必要である。平均粒径が3000人
を超える結晶組織を有していたり、アモルファス組織を
有する粉末は、得られるボンド磁石の保磁力および残留
磁束密度が低下する。This powder needs to have a microcrystalline structure with an average particle size of 3000 Å or less. Powders having a crystalline structure with an average particle size of more than 3000 grains or an amorphous structure have a reduced coercive force and residual magnetic flux density of the obtained bonded magnet.
本発明の合金粉末は、例えば、合金溶湯を高速回転する
銅製のロールに吹きつけ、急冷凝固させて得られた薄帯
を、真空中または不活性ガス中、400〜1000℃で
加熱し、冷却した後、粉砕することにより製造すること
ができる。The alloy powder of the present invention can be produced by, for example, spraying a molten alloy onto a high-speed rotating copper roll, rapidly solidifying the resulting ribbon, heating it at 400 to 1000°C in a vacuum or an inert gas, and then cooling it. After that, it can be manufactured by crushing.
ボンド磁石の製造に使用するバインダーとしては、例え
ば、合成樹脂、ハンダ合金が挙げられる。Examples of binders used in manufacturing bonded magnets include synthetic resins and solder alloys.
合成樹脂は熱硬化性、熱可塑性のいずれのものも使用で
きるが、耐熱性の高いものが好ましく、例えば、ポリア
ミド、ポリイミド、ポリエステル、フェノール樹脂、フ
ッ素樹脂、シリコーン樹脂、エポキシ樹脂、ポリブチレ
ンテレフタレート樹脂、ボリフェニレンサルフプイド樹
脂、液晶樹脂、ポリエーテルエーテルケトン樹脂が挙げ
られる。ハンダ合金としては、Cu、 AL ttlh
、 Sn、 pb、 Inなどのハンダ合金が挙げられ
る。Both thermosetting and thermoplastic synthetic resins can be used, but those with high heat resistance are preferred, such as polyamide, polyimide, polyester, phenol resin, fluororesin, silicone resin, epoxy resin, and polybutylene terephthalate resin. , polyphenylene sulfpide resin, liquid crystal resin, and polyether ether ketone resin. As solder alloy, Cu, AL ttlh
, Sn, PB, In, and other solder alloys.
ボンド磁石の製造は、バインダーとして合成樹脂を使用
する場合は、上記のようにして製造した希土類合金粉末
をバインダーと混合し、例えば約5〜25kOe程度の
磁場中で合金粒子を配向させながらプレス成形法、射出
成形法等の成形法により所望の形状に成形すればよい0
合金粉末をバインダーと混合する際には、必要に応じて
合金粒子を、例えば、シランカップリング剤、チタネー
トカップリング剤等の表面処理剤、酸化防止剤などで予
め処理しておくこともできる。When a synthetic resin is used as a binder, bonded magnets are produced by mixing the rare earth alloy powder produced as described above with the binder and press-molding the mixture while orienting the alloy particles in a magnetic field of about 5 to 25 kOe, for example. It can be molded into the desired shape using a molding method such as molding or injection molding.
When mixing the alloy powder with the binder, the alloy particles can be treated in advance with a surface treatment agent such as a silane coupling agent or a titanate coupling agent, an antioxidant, etc., if necessary.
バインダーとしてハンダ合金を使用する場合のボンド磁
石の製造は、本発明の希土類合金粉末、ハンダ合金粉末
及び界面活性剤を混合し、100〜200°Cで磁場中
においてプレス成形または射出成形を行なえばよい。When a solder alloy is used as a binder, a bonded magnet can be manufactured by mixing the rare earth alloy powder of the present invention, solder alloy powder, and a surfactant, and performing press molding or injection molding at 100 to 200°C in a magnetic field. good.
ボンド磁石製造の際のバインダー使用量は、合金粉末と
バインダーの合計量に対して、熱可塑性樹脂を使用して
射出成形を行なう場合、6〜lO重量%が、また、熱硬
化性樹脂を使用してプレス成形を行なう場合、0.5〜
4重量%が好ましい。When manufacturing bonded magnets, the amount of binder used is 6 to 10% by weight when injection molding is performed using a thermoplastic resin, based on the total amount of alloy powder and binder, and when using a thermosetting resin. When performing press molding with
4% by weight is preferred.
以下、本発明を実施例により具体的に説明する。 Hereinafter, the present invention will be specifically explained with reference to Examples.
実施例1〜10.比較例1〜7
原料として、いずれも金属状のFe、 Ss、 Pr、
Nd。Examples 1-10. Comparative Examples 1 to 7 All of the raw materials were metallic Fe, Ss, Pr,
Nd.
Mn、AX、V、WおよびMo (いずれも純度99.
9重量%)を所定の組成の合金粉末が得られるように配
合し、高周波溶解炉で溶解した後、銅鋳型に鋳造した。Mn, AX, V, W and Mo (all purity 99.
(9% by weight) was blended to obtain an alloy powder with a predetermined composition, melted in a high frequency melting furnace, and then cast into a copper mold.
得られたインゴットを噴射ノズル付き石英製保護管中で
Ar雰雰囲気下用周波溶解た後、周速度40m/秒で回
転するCu製ロールに吹付けて、急冷薄帯を得た。この
薄帯は、X線回折パターンにより非晶質体であることが
確認された。The obtained ingot was subjected to frequency melting under an Ar atmosphere in a quartz protection tube equipped with a spray nozzle, and then sprayed onto a Cu roll rotating at a circumferential speed of 40 m/sec to obtain a quenched ribbon. This ribbon was confirmed to be amorphous by an X-ray diffraction pattern.
次に、この薄帯を真空中800°Cで1時間加熱した後
、常温まで冷却した。得られた薄帯をTEMで観察した
ところ、結晶粒径はすべての試料において、はとんど5
00〜1000人であった。更に、この薄帯を60メツ
シユ以下に粉砕した。ここで得た粉末の組成(原子比)
を第1表に示す。Next, this ribbon was heated in vacuum at 800°C for 1 hour, and then cooled to room temperature. When the obtained ribbons were observed using a TEM, the crystal grain size in all samples was approximately 5.
There were 00-1000 people. Furthermore, this ribbon was pulverized into 60 meshes or less. Composition of the powder obtained here (atomic ratio)
are shown in Table 1.
これらの合金粉末を、得られるボンド磁石に対し2重量
%のエポキシ樹脂(アデカレジン)と混合し、5t/d
の圧力でプレス成形した0次に、この成形体(幅5閣、
高さ6閣、長さ10閣)を130℃で30分加熱して硬
化させた後、50koeの磁場でパルス着磁してボンド
磁石を作成した。ボンド磁石の磁気特性を第2表に示す
。These alloy powders were mixed with 2% by weight of epoxy resin (ADEKA RESIN) based on the bonded magnet obtained, and 5t/d
This molded body (width 5 kaku,
After hardening by heating at 130° C. for 30 minutes, a bonded magnet was produced by pulse magnetization in a magnetic field of 50 koe. The magnetic properties of the bonded magnets are shown in Table 2.
実施例1−1〜1−4
熱硬化性樹脂の種類および使用量を第3表のようにした
こと以外は、実施例1と同様に試験した。Examples 1-1 to 1-4 Tests were conducted in the same manner as in Example 1, except that the type and amount of thermosetting resin used were as shown in Table 3.
更に、本実施例ではボンド磁石の最大曲げ応力も測定し
た。得られた結果を第3表に示す。Furthermore, in this example, the maximum bending stress of the bonded magnet was also measured. The results obtained are shown in Table 3.
実施例11〜17
試料阻1および隘2の合金粉末を、その種類および使用
量が第4表のような熱可塑性樹脂と混合した0次に、こ
の混合物を250℃で15分間混練して、室温まで冷却
した後、60メツシユ以下に粉砕した。更に、得られた
混練物を255℃に加熱された射出成形用シリンダーに
供給し、射出成形した。Examples 11 to 17 The alloy powders of samples No. 1 and No. 2 were mixed with a thermoplastic resin whose type and usage amount are as shown in Table 4. Next, this mixture was kneaded at 250°C for 15 minutes, After cooling to room temperature, it was pulverized to 60 meshes or less. Furthermore, the obtained kneaded material was supplied to an injection molding cylinder heated to 255° C. and injection molded.
この成形体([気持性測定用は厚み15m+、径20−
1機械特性測定用は幅10am、高さ1wm、長さ15
0mm)を50kOeの磁場でパルス着磁してボンド磁
石を作成した。得られた結果を第4表に示す。This molded body ([For air quality measurement, thickness 15m+, diameter 20-
1.For measuring mechanical properties, width is 10am, height is 1wm, and length is 15mm.
0 mm) was pulse magnetized in a magnetic field of 50 kOe to create a bonded magnet. The results obtained are shown in Table 4.
以上から、本発明により、安価で優れた磁気特性を有す
る希土類合金粉末およびそれを使用したボンド磁石を提
供することができる。As described above, the present invention can provide a rare earth alloy powder that is inexpensive and has excellent magnetic properties, and a bonded magnet using the same.
Claims (2)
びAl,V,W,Moのうちの少なくとも1種のM並び
にFeおよび不可避不純物からなり、式:R(Fe_1
_−_x_−_yMn_xM_y)_z(但し、0<x
<0.5,0<y<0.5,0<x+y≦0.5,11
≦z≦13) で表わされる組成を有し、平均粒径が3000Å以下の
微結晶組織を有するボンド磁石用希土類合金粉末。1. It consists of at least one of rare earth metals R, Mn and at least one M of Al, V, W, Mo, Fe and unavoidable impurities, and has the formula: R(Fe_1
_−_x_−_yMn_xM_y)_z(However, 0<x
<0.5,0<y<0.5,0<x+y≦0.5,11
≦z≦13) A rare earth alloy powder for bonded magnets having a composition represented by the following formula and having a microcrystalline structure with an average grain size of 3000 Å or less.
びAl,V,W,Moのうちの少なくとも1種のM並び
にFeおよび不可避不純物からなり、式:R(Fe_1
_−_x_−_yMn_xM_y)_z(但し、0<x
<0.5,0<y<0.5,0<x+y≦0.5,11
≦z≦13) で表わされる組成を有し、平均粒径が3000Å以下の
微結晶組織を有するボンド磁石用希土類合金粉末とバイ
ンダーとからなるボンド磁石。2. It consists of at least one of rare earth metals R, Mn and at least one M of Al, V, W, Mo, Fe and unavoidable impurities, and has the formula: R(Fe_1
_−_x_−_yMn_xM_y)_z(However, 0<x
<0.5,0<y<0.5,0<x+y≦0.5,11
≦z≦13) A bonded magnet comprising a binder and a rare earth alloy powder for a bonded magnet having a microcrystalline structure with an average grain size of 3000 Å or less.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1040180A JPH02220413A (en) | 1989-02-22 | 1989-02-22 | Rare earth alloy powder for bond magnet and bond magnet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1040180A JPH02220413A (en) | 1989-02-22 | 1989-02-22 | Rare earth alloy powder for bond magnet and bond magnet |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02220413A true JPH02220413A (en) | 1990-09-03 |
Family
ID=12573583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1040180A Pending JPH02220413A (en) | 1989-02-22 | 1989-02-22 | Rare earth alloy powder for bond magnet and bond magnet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02220413A (en) |
-
1989
- 1989-02-22 JP JP1040180A patent/JPH02220413A/en active Pending
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