JP2000114014A - Magnet and manufacture thereof - Google Patents
Magnet and manufacture thereofInfo
- Publication number
- JP2000114014A JP2000114014A JP10279561A JP27956198A JP2000114014A JP 2000114014 A JP2000114014 A JP 2000114014A JP 10279561 A JP10279561 A JP 10279561A JP 27956198 A JP27956198 A JP 27956198A JP 2000114014 A JP2000114014 A JP 2000114014A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- protective layer
- magnet material
- tight
- layer
- 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 10
- 239000000463 material Substances 0.000 claims abstract description 39
- 239000011241 protective layer Substances 0.000 claims abstract description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000010410 layer Substances 0.000 claims abstract description 22
- 229910052742 iron Inorganic materials 0.000 claims abstract description 13
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 12
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000007822 coupling agent Substances 0.000 claims abstract description 7
- 229920006254 polymer film Polymers 0.000 claims description 9
- 239000012790 adhesive layer Substances 0.000 claims 2
- 230000005389 magnetism Effects 0.000 claims 1
- 239000011347 resin Substances 0.000 abstract description 16
- 229920005989 resin Polymers 0.000 abstract description 16
- 239000000843 powder Substances 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 238000000748 compression moulding Methods 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 238000007740 vapor deposition Methods 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract description 2
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 abstract 4
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005469 granulation Methods 0.000 abstract 1
- 230000003179 granulation Effects 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- -1 chloroparaxylylene Chemical group 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- SDIXRDNYIMOKSG-UHFFFAOYSA-L disodium methyl arsenate Chemical compound [Na+].[Na+].C[As]([O-])([O-])=O SDIXRDNYIMOKSG-UHFFFAOYSA-L 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920000052 poly(p-xylylene) Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/026—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets protecting methods against environmental influences, e.g. oxygen, by surface treatment
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、磁石素材の表面に
保護層を成膜形成した磁石及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnet in which a protective layer is formed on the surface of a magnet material and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】近年、磁石の表面に耐食性等を向上させ
るように保護層をコーティングする提案が種々なされて
いる。この磁石の保護層としてはパラキシリレン系樹脂
（例えば、ユニオンカーバイド社製の商品名パリレンコ
ート）などが用いられており、磁石素材の表面に対して
樹脂重合膜を成膜することによって形成されている。そ
の樹脂重合膜からなる保護層は、高撥水性及びガスバリ
アー性を備えることによって磁石の耐食性等を向上させ
ている。2. Description of the Related Art In recent years, various proposals have been made to coat a protective layer on the surface of a magnet so as to improve corrosion resistance and the like. As a protective layer of the magnet, a paraxylylene-based resin (for example, Parylene Coat manufactured by Union Carbide Co., Ltd.) or the like is used, and is formed by forming a resin polymer film on the surface of the magnet material. . The protective layer made of the resin polymer film has high water repellency and gas barrier properties, thereby improving the corrosion resistance and the like of the magnet.
【０００３】[0003]
【発明が解決しようとする課題】ところが、このような
磁石表面の保護層として、上述したパラキシリレン系樹
脂を用いた場合には、極性基が存在しないことや、その
他の原因によって磁石素材に対する密着性が良好でな
く、成膜後に保護層が磁石から剥がれ落ちるおそれがあ
る。このような問題を解決するために、例えば特開平２
−２４８０１２号記載の発明のように、磁石素材の表面
を予めプラズマ処理によって荒らしておくことによって
保護層の密着性を高めるようにしたものも提案されてい
る。しかしながら、当該提案では、装置が大がかりにな
ってしまう上に、多大な処理時間を要することとなり、
製品としての磁石が非常に高価になってしまうという問
題がある。However, when the above-mentioned paraxylylene-based resin is used as a protective layer on the surface of such a magnet, the adhesion to the magnet material may be caused by the absence of a polar group or other causes. And the protective layer may peel off from the magnet after film formation. In order to solve such a problem, for example, Japanese Unexamined Patent Application Publication No.
As in the invention described in US Pat. No. 2,480,012, there has been proposed a magnet material in which the surface of a magnet material is previously roughened by a plasma treatment to enhance the adhesion of a protective layer. However, in this proposal, the device becomes large-scale and requires a great deal of processing time,
There is a problem that a magnet as a product becomes very expensive.
【０００４】そこで本発明は、簡易な手段で、無極性樹
脂からなる保護層を磁石素材に対して良好に被着させる
ことができるようにした磁石及びその製造方法を提供す
ることを目的とする。Accordingly, an object of the present invention is to provide a magnet and a method of manufacturing the same, which enable a protective layer made of a nonpolar resin to be satisfactorily adhered to a magnet material by simple means. .
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
請求項１記載の発明では、鉄成分を含有した磁石素材の
表面に、パラキシリレン系重合膜からなる保護層を成膜
形成した磁石において、前記磁石素材と保護層との間
に、これら両部材どうしの接合性を向上させる密着層を
介在させている。According to the first aspect of the present invention, there is provided a magnet in which a protective layer comprising a paraxylylene polymer film is formed on a surface of a magnet material containing an iron component. An adhesion layer is provided between the magnet material and the protective layer to improve the bonding between the two members.
【０００６】また、請求項２記載の発明では、前記請求
項１記載の密着層が、チタネート系カップリング剤又は
シランカップリング剤である。In the invention according to claim 2, the adhesion layer according to claim 1 is a titanate coupling agent or a silane coupling agent.
【０００７】さらに、請求項３記載の発明では、前記請
求項１記載の磁石素材が、希土類鉄系の樹脂ボンド磁石
である。Further, in the invention according to claim 3, the magnet material according to claim 1 is a rare-earth iron-based resin-bonded magnet.
【０００８】さらにまた、請求項４記載の発明では、前
記請求項１記載の磁石素材が、希土類鉄系の焼結磁石で
ある。Further, in the invention according to claim 4, the magnet material according to claim 1 is a rare earth iron-based sintered magnet.
【０００９】一方、請求項５記載の発明では、鉄成分を
含有した磁石素材の表面に、パラキシリレン系重合膜か
らなる保護層を成膜形成するようにした磁石の製造方法
において、前記磁石素材の表面に、当該磁石素材の表面
と保護層との接合性を向上させる密着層を被着させた
後、その密着層の表面に保護層を成膜形成するようにし
ている。According to a fifth aspect of the present invention, there is provided a method of manufacturing a magnet, wherein a protective layer comprising a paraxylylene-based polymer film is formed on the surface of a magnet material containing an iron component. After an adhesion layer for improving the bonding property between the surface of the magnet material and the protective layer is applied to the surface, a protective layer is formed on the surface of the adhesion layer.
【００１０】このような磁石及びその製造方法では、パ
ラキシリレン系樹脂保護層に用いた場合であっても、チ
タネート系カップリング剤又はシランカップリング剤な
どからなる密着層の接合作用によって、磁石素材の表面
に対して重合膜が良好に被着されるようになっている。In such a magnet and a method for manufacturing the same, even when the magnet is used for the paraxylylene-based resin protective layer, the bonding action of the adhesion layer made of a titanate-based coupling agent or a silane coupling agent allows the magnet material to be bonded. The polymer film is favorably applied to the surface.
【００１１】このような作用は、特に、希土類鉄系の樹
脂ボンド磁石又は焼結磁石において良好な結果が得られ
る。[0011] Such an effect is particularly good in rare-earth iron-based resin-bonded magnets or sintered magnets.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて詳細に説明する。まず、図１のステップ１の
ように、希土類鉄系の樹脂ボンド磁石又は焼結磁石の素
材となるものを製造して準備しておくが、その磁石素材
を製造するに当たっては、造粒粉末（コンパウンド）を
構成している希土類磁石粉末の適量を金型内に充填し
て、リング状等の所定の形状に圧縮成形を行い、図２中
の符号１で示されているような磁石素材を得る。Embodiments of the present invention will be described below in detail with reference to the drawings. First, as shown in Step 1 of FIG. 1, a material to be a material of a rare-earth iron-based resin-bonded magnet or a sintered magnet is manufactured and prepared. In manufacturing the magnet material, granulated powder ( A suitable amount of the rare-earth magnet powder constituting the compound is filled in a mold, compression-molded into a predetermined shape such as a ring shape, and a magnet material as indicated by reference numeral 1 in FIG. obtain.
【００１３】そのときの造粒粉末（コンパウンド）の実
施例としては、例えば以下のようなものが挙げられる。 希土類磁石粉末：Ｎｄ−Ｆｅ−Ｂ（ＭＱＰ−Ｂ；ＭＱＩ社製）・・・１００部 固形樹脂；エポキシ樹脂（エピフォームＥＰＸ；ソマール社製）・・０．５部 液状樹脂；エポキシ樹脂 主剤（エピコート８０１；油化シェル社製）・・・・０．９５部 硬化剤（ＩＢＭＩ−１２；油化シェル社製）・・・・０．５５部 滑剤：ステアリン酸カルシウム（試薬）・・・・・・・・・・・・・０．３部Examples of the granulated powder (compound) at that time include the following. Rare earth magnet powder: Nd-Fe-B (MQP-B; manufactured by MQI) 100 parts Solid resin; Epoxy resin (Epiform EPX; manufactured by Somar) 0.5 part Liquid resin; Epoxy resin Epicoat 801; Yuka Shell Co.) 0.95 parts Hardener (IBMI-12; Yuka Shell Co.) 0.55 parts Lubricant: calcium stearate (reagent) ... ..... 0.3 parts
【００１４】また、圧縮成形圧力は、例えば、５ｔｏｎ
〜１２ｔｏｎ／ｃｍ２に設定される。なお、この圧縮成
形工程中に磁場配向によって異方化を行うことによって
磁化方向を一方向に揃えることとすれば、良好な磁気特
性が得られる。The compression molding pressure is, for example, 5 tons.
It is set to １２12 ton / cm 2 . It should be noted that good magnetic properties can be obtained if the magnetization direction is aligned in one direction by performing anisotropy by the magnetic field orientation during the compression molding step.
【００１５】次いで、得られた磁石素材１を、図１中の
ステップ２，３及び４のようにして、脱脂、洗浄及び乾
燥の各処理工程を施して、上述した磁石素材１の表面を
清浄な状態とする。そして、その磁石素材１の表面に対
して、ステップ５のように、図２中の符号２で示した密
着層を浸漬等によって被着させる。この密着層２は、次
に述べる保護層３の接合性を向上させるためのものであ
るが、具体的には、チタネート系カップリング剤又はシ
ランカップリング剤等が用いられる。なお、この密着層
は、スプレー塗装や刷毛塗り又はバレルスプレー塗装等
の他の公知の塗装手段によっても同様に形成することが
できる。Next, the obtained magnet material 1 is subjected to degreasing, washing, and drying treatment steps as in steps 2, 3 and 4 in FIG. 1 to clean the surface of the magnet material 1 described above. State. Then, as in step 5, an adhesion layer indicated by reference numeral 2 in FIG. The adhesion layer 2 is for improving the bonding property of the protective layer 3 described below, and specifically, a titanate coupling agent or a silane coupling agent is used. In addition, this adhesion layer can be similarly formed by other known coating means such as spray coating, brush coating or barrel spray coating.
【００１６】このような密着層２を磁石素材１の表面に
形成した後、図１中のステップ６のように液切りを行
い、次のステップ７で、前述した密着層２の上から、図
２中の符号３で示したように耐食性等の表面特性を高め
るための保護層３を成膜形成する。この保護層３は、極
性基を含まないパラキシリレン、又は極性基を含むクロ
ロパラキシリレン等のパラキシリレン系樹脂などからな
る樹脂を用いて重合膜に形成したものであって、例えば
真空蒸着（ＣＶＤ）法によって成膜形成される。この真
空蒸着法では、まず気化器でダイマー（原料）を１７５
℃、１ｔｏｒｒ前後の条件下で気化させた後、熱分解室
において６８０℃、０．５ｔｏｒｒ前後の条件下で熱分
解させてラジカルを生成する。そして、それを蒸着室に
導いて、３５℃、０．１ｔｏｒｒ前後の条件下で、前述
した磁石素材の密着層の上に膜状に吸着・重合させる。
そして最後に、−７０℃以下で、０．００１ｔｏｒｒ程
度の条件下で冷却を行う。After such an adhesion layer 2 is formed on the surface of the magnet material 1, the liquid is drained as in step 6 in FIG. 1, and in the next step 7, the liquid is removed from above the adhesion layer 2 as shown in FIG. As shown by reference numeral 3 in 2, a protective layer 3 for improving surface properties such as corrosion resistance is formed. The protective layer 3 is formed on a polymer film using a resin made of a paraxylylene-based resin such as paraxylylene containing no polar group or chloroparaxylylene containing a polar group. The film is formed by a method. In this vacuum deposition method, first, a dimer (raw material) is 175 vaporized by a vaporizer.
After vaporizing at about 1 ° C. and 1 torr, it is thermally decomposed in a thermal decomposition chamber at 680 ° C. and about 0.5 torr to generate radicals. Then, it is guided to a vapor deposition chamber, and is adsorbed and polymerized in the form of a film on the above-mentioned adhesion layer of the magnet material under the condition of 35 ° C. and about 0.1 torr.
Finally, cooling is performed at a temperature of -70 ° C. or lower and about 0.001 torr.
【００１７】このような実施形態においては、保護層３
として、パラキシリレン系樹脂を用いた場合であって
も、チタネート系カップリング剤又はシランカップリン
グ剤などからなる密着層２を磁石素材１の表面に形成し
ておくだけで、当該密着層２の電気的あるいは化学的な
接合作用によって、磁石素材１の表面に対して保護層３
が良好に成膜・被着されるようになっている。In such an embodiment, the protective layer 3
Even if a paraxylylene-based resin is used, only the adhesion layer 2 made of a titanate-based coupling agent or a silane coupling agent is formed on the surface of the magnet material 1, and the electric power of the adhesion layer 2 can be reduced. The protective layer 3 is applied to the surface of the magnet material 1 by mechanical or chemical bonding.
Is deposited and deposited satisfactorily.
【００１８】このような作用は、特に、希土類鉄系の樹
脂ボンド磁石又は焼結磁石に対して良好な結果が得られ
る。Such an effect is particularly good for rare-earth iron-based resin-bonded magnets or sintered magnets.
【００１９】以上、本発明者によってなされた発明の実
施形態を具体的に説明したが、本発明は上記実施形態に
限定されるものではなく、その要旨を逸脱しない範囲で
種々変形可能であるというのはいうまでもない。Although the embodiments of the present invention made by the inventor have been specifically described above, the present invention is not limited to the above-described embodiments, and can be variously modified without departing from the gist thereof. Needless to say.
【００２０】[0020]
【発明の効果】以上述べたように本発明にかかる磁石及
びその製造方法は、保護層としてパラキシリレン系樹脂
を用いた場合であっても、チタネート系カップリング剤
又はシランカップリング剤などからなる密着層を磁石素
材の表面に塗布しておくだけで、保護層を良好に被着さ
せるようにしたものであるから、従来のような大がかり
なプラズマ装置等を用いることなく、無極性樹脂重合膜
からなる保護層を簡易な手段で良好に被着させることが
でき、安価で高品質な磁石を得ることができる。As described above, the magnet according to the present invention and the method for manufacturing the same can be used in a close contact state comprising a titanate coupling agent or a silane coupling agent even when a paraxylylene resin is used as the protective layer. By simply applying the layer to the surface of the magnet material, the protective layer can be satisfactorily adhered, so that the non-polar resin polymer film can be formed without using a conventional large-scale plasma device. The protective layer can be satisfactorily applied by a simple means, and an inexpensive and high-quality magnet can be obtained.
【００２１】このような効果は、希土類鉄系の樹脂ボン
ド磁石又は焼結磁石において特に顕著に得られるもので
ある。Such an effect is particularly remarkably obtained in rare-earth iron-based resin-bonded magnets or sintered magnets.
【図１】本発明の一実施形態にかかる磁石の製造方法を
表した工程説明図である。FIG. 1 is a process explanatory view showing a method for manufacturing a magnet according to an embodiment of the present invention.
【図２】本発明の一実施形態にかかる磁石の構造を表し
た断面説明図である。FIG. 2 is an explanatory cross-sectional view illustrating a structure of a magnet according to an embodiment of the present invention.
１ 磁石素材 ２ 密着層 ３ 保護層 1 magnet material 2 adhesion layer 3 protective layer
Claims (5)
ラキシリレン系重合膜からなる保護層を成膜形成した磁
石において、 前記磁石素材と保護層との間に、これら両部材どうしの
接合性を向上させる密着層を介在させたことを特徴とす
る磁石。1. A magnet in which a protective layer made of a paraxylylene polymer film is formed on a surface of a magnet material containing an iron component, wherein a bonding property between the two members is provided between the magnet material and the protective layer. A magnet characterized by interposing an adhesion layer for improving the magnetism.
グ剤又はシランカップリング剤であることを特徴とする
請求項１記載の磁石。2. The magnet according to claim 1, wherein the adhesion layer is a titanate coupling agent or a silane coupling agent.
ド磁石であることを特徴とする請求項１記載の磁石。3. The magnet according to claim 1, wherein the magnet material is a rare-earth iron-based resin-bonded magnet.
であることを特徴とする請求項１記載の磁石。4. The magnet according to claim 1, wherein the magnet material is a rare earth iron-based sintered magnet.
ラキシリレン系重合膜からなる保護層を成膜形成するよ
うにした磁石の製造方法において、前記磁石素材の表面
に、当該磁石素材の表面と保護層との接合性を向上させ
る密着層を被着させた後、その密着層の表面に保護層を
成膜形成するようにしたことを特徴とする磁石の製造方
法。5. A method for manufacturing a magnet, wherein a protective layer made of a paraxylylene-based polymer film is formed on a surface of a magnet material containing an iron component, wherein the surface of the magnet material is formed on the surface of the magnet material. A method for manufacturing a magnet, comprising: forming a protective layer on the surface of an adhesive layer after applying an adhesive layer for improving the bonding property between the magnetic layer and the protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10279561A JP2000114014A (en) | 1998-10-01 | 1998-10-01 | Magnet and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10279561A JP2000114014A (en) | 1998-10-01 | 1998-10-01 | Magnet and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000114014A true JP2000114014A (en) | 2000-04-21 |
Family
ID=17612698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10279561A Pending JP2000114014A (en) | 1998-10-01 | 1998-10-01 | Magnet and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000114014A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007123748A (en) * | 2005-10-31 | 2007-05-17 | Aisin Seiki Co Ltd | Corrosion resistant magnet and manufacturing method thereof |
| CN102470777A (en) * | 2009-08-28 | 2012-05-23 | 蒂森克鲁伯快速运输有限公司 | Magnet pole for magnetic levitation vehicles, and method for the production thereof |
-
1998
- 1998-10-01 JP JP10279561A patent/JP2000114014A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007123748A (en) * | 2005-10-31 | 2007-05-17 | Aisin Seiki Co Ltd | Corrosion resistant magnet and manufacturing method thereof |
| CN102470777A (en) * | 2009-08-28 | 2012-05-23 | 蒂森克鲁伯快速运输有限公司 | Magnet pole for magnetic levitation vehicles, and method for the production thereof |
| CN102470777B (en) * | 2009-08-28 | 2014-06-25 | 蒂森克鲁伯快速运输有限公司 | Magnet pole for magnetic levitation vehicles, and method for the production thereof |
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