JPS63301506A - Permanent magnet and manufacture thereof - Google Patents
Permanent magnet and manufacture thereofInfo
- Publication number
- JPS63301506A JPS63301506A JP13799387A JP13799387A JPS63301506A JP S63301506 A JPS63301506 A JP S63301506A JP 13799387 A JP13799387 A JP 13799387A JP 13799387 A JP13799387 A JP 13799387A JP S63301506 A JPS63301506 A JP S63301506A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- permanent magnet
- sio2
- heating
- solidified
- 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 7
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 11
- 239000010409 thin film Substances 0.000 claims abstract description 11
- 239000010419 fine particle Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910010272 inorganic material Inorganic materials 0.000 claims 3
- 239000011147 inorganic material Substances 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 14
- 239000000243 solution Substances 0.000 abstract description 14
- 229910052796 boron Inorganic materials 0.000 abstract description 8
- 229910052742 iron Inorganic materials 0.000 abstract description 8
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 7
- 239000007864 aqueous solution Substances 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract description 4
- BFYCFODZOFWWAA-UHFFFAOYSA-N 2,4,6-trimethylpyridine-3-carbaldehyde Chemical compound CC1=CC(C)=C(C=O)C(C)=N1 BFYCFODZOFWWAA-UHFFFAOYSA-N 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 230000007797 corrosion Effects 0.000 description 10
- 238000005260 corrosion Methods 0.000 description 10
- 239000008119 colloidal silica Substances 0.000 description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 229910052772 Samarium Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007739 conversion coating Methods 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 2
- 229920006334 epoxy coating Polymers 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 101150011345 CA8 gene Proteins 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910000722 Didymium Inorganic materials 0.000 description 1
- 241000224487 Didymium Species 0.000 description 1
- 101100348017 Drosophila melanogaster Nazo gene Proteins 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 1
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- OHSVLFRHMCKCQY-UHFFFAOYSA-N lutetium atom Chemical compound [Lu] OHSVLFRHMCKCQY-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical group [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- WHOPEPSOPUIRQQ-UHFFFAOYSA-N oxoaluminum Chemical compound O1[Al]O[Al]1 WHOPEPSOPUIRQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔浄東上の利用分野〕
この発明は、R−B−Fe系永久出石に係り、とくに耐
食性を改善したR −B −Fe系永久磁石およびその
製造方法に関するものである。[Detailed Description of the Invention] [Field of Application in Joto] This invention relates to R-B-Fe permanent magnets, and in particular to R-B-Fe permanent magnets with improved corrosion resistance and a method for manufacturing the same. .
近年、従来のSrn −Co Ie石に比較し、より高
釦気符性を有しかつ資諒的にも高価なSmやCoを、必
ずしも含!ないNd −B −Fe系永久出石が発明さ
れた。(佐用ほか、J、Appl 、Phys、55(
6) 、 15March1984.p2083〜20
87、および特開昭59−46008号公報、同60−
182104号公報参照)しかし、Nd −B −Fe
系焼結磁石の表面は化学的に不安定で、錆を生成しやす
い。従って、防錆を目的とした表面処理方法が多く開示
されている。In recent years, compared to the conventional Srn-Co Ie stone, it has a higher energy content and does not necessarily contain Sm or Co, which is expensive in terms of mineralogy. A permanent Nd-B-Fe based stone was invented. (Sayo et al., J. Appl., Phys., 55 (
6), 15March1984. p2083-20
87, and JP-A-59-46008, 60-
182104) However, Nd -B -Fe
The surface of sintered magnets is chemically unstable and prone to rust. Therefore, many surface treatment methods aimed at rust prevention have been disclosed.
例えば、Nl + Cu t Znの金属メッキ法(特
開昭60−54406号公報)、リン酸塩、クロム酸塩
などの化成被膜処理方法(%開昭60−63903号公
報)。For example, a metal plating method using Nl + Cu t Zn (Japanese Patent Application Laid-open No. 60-54406), a conversion coating treatment method using phosphate, chromate, etc. (% Japanese Patent Application Laid-open No. 60-63903).
エポキシ、アクリル、メラミンなどの樹脂層を設ける方
法(特開昭60−63901号公報)およびM薄膜層を
設ける方法(特開昭61−270308号公仲)が提案
されている。A method of providing a resin layer such as epoxy, acrylic, or melamine (Japanese Patent Application Laid-Open No. 60-63901) and a method of providing an M thin film layer (Japanese Patent Application Laid-Open No. 61-270308) have been proposed.
しかし、これらの従来方法では永久磁石表面の耐食性は
未だ不十分であり、改善が望1れていた。However, with these conventional methods, the corrosion resistance of the permanent magnet surface is still insufficient, and improvement has been desired.
本発明者は神々の試みを繰返した結果、無機質微粒子S
i 02を、アルコール水溶液中でコロイド状にし、そ
れをスプレー塗装し、加熱固化する方法によって前記問
題点を解決できることを見出したものである。As a result of repeated divine attempts, the present inventor discovered that inorganic fine particles S
It has been discovered that the above-mentioned problems can be solved by a method in which i02 is made into a colloid in an aqueous alcohol solution, spray-painted, and solidified by heating.
そこで本発明は、R−B −Fe系磁石表面に無機質の
Si O2薄膜を設けることにより、優れた耐食性能が
得られる永久磁石およびその製造方法を提供することを
目的とする。Therefore, an object of the present invention is to provide a permanent magnet that can obtain excellent corrosion resistance by providing an inorganic SiO2 thin film on the surface of the R-B-Fe-based magnet, and a method for manufacturing the same.
すなわち、本発明は必須元素としてR(Yを含む希土類
元素の内、少なくとも1種)、BおよびFeからなるR
−E −Fe系永久磁石の表面にアルコール水浴液と
無機質微粒子(Si 02 )で構成されるコロイダル
溶液を塗装し、加熱固化し、8貴に応じさらに樹脂層を
設けた永久66石およびその製造方法である。That is, the present invention uses R (at least one kind of rare earth elements including Y), B, and Fe as essential elements.
-E -Colloidal solution consisting of an alcohol bath solution and inorganic fine particles (Si 02 ) is coated on the surface of a Fe-based permanent magnet, heated and solidified, and a resin layer is further provided according to the No. 8 Noble 66 permanent stone and its production. It's a method.
以下本発明を詳述すると、本発明を適用するに先立ち公
知の方法(例えば特開昭59−46008号公報および
特開昭60−182104号公報参照)にてRB−Fe
系焼結磁石が準備される。The present invention will be described in detail below. Prior to applying the present invention, RB-Fe
A system sintered magnet is prepared.
上記磁石は、必要部分の研摩加工後、有機溶剤(例えは
、1.1.1、トリクロルエタン、フレオン。After polishing the necessary parts of the magnet, the magnet is treated with an organic solvent (for example, 1.1.1, trichloroethane, Freon).
トリクロルエチレンなど)で脱脂される。脱脂後、例え
ば硫酸水溶液による表面酸化物の除去を行うと、Sig
h薄膜の密着性が向上する。表面酸化物の除去は、上記
酸処理以外に、Al2O2微粒子を使用したブラスト処
理で代替しても良い。Degreased with trichlorethylene, etc.). After degreasing, if surface oxides are removed using a sulfuric acid aqueous solution, Sig
h The adhesion of the thin film is improved. In addition to the acid treatment described above, blasting using Al2O2 fine particles may be used to remove surface oxides.
表面が清浄化された磁石は、必要に応じ化成処J8!を
行うと、一層、耐腐食性が向上する。化成処理は、リン
酸塩、クロム酸塩などの化成皮膜処理で良い。If necessary, the magnet whose surface has been cleaned can be treated with a chemical treatment J8! If this is done, corrosion resistance will be further improved. The chemical conversion treatment may be a chemical conversion coating treatment using phosphate, chromate, or the like.
9上の塗装前処理を実施後、本発明による無機質微粒子
(Si 02 )を含むコロイダルシリカアルコール水
溶液を、磁石表面にスプレーし、加熱固化する。After carrying out the pre-painting treatment described in No. 9, an aqueous colloidal silica alcohol solution containing inorganic fine particles (Si 02 ) according to the present invention is sprayed onto the magnet surface and solidified by heating.
固形物としては、主式物質であるSi 02以外に、T
i 02 、 Cr2O3,Atzo3.MgO、Ca
O、NazO,に20、Fe2O3、B2O3、ZrO
2O3,B203 、 Zr 02 から選択される
1種以上を含有しても良く、コロイダル溶液中の含有量
として、重Q %にて5〜50%が望了しい。上記物質
は、Si 02薄膜(無色透明)の色調調整や物性値の
調整に添加される。In addition to Si 02, which is the main formula substance, the solids include T
i 02 , Cr2O3, Atzo3. MgO, Ca
O, NazO, Ni20, Fe2O3, B2O3, ZrO
It may contain one or more selected from 2O3, B203, and Zr02, and the content in the colloidal solution is preferably 5 to 50% by weight Q%. The above substances are added to adjust the color tone and physical property values of the Si 02 thin film (colorless and transparent).
Si 02薄膜を付与した後、さらに櫓脂層を8を層す
ることにより耐食性が一層改善される。用いる樹脂はエ
ポキシ、アクリル、フラン、アルキド、メラミン、ポリ
イミド、ポリエーテルサルフォン樹脂などあるいはこれ
らの樹脂の複合で良く、塗膜方法もスプレー塗装テたは
電着塗装(特開昭61−130453号公報参照)で良
い。After applying the Si 02 thin film, the corrosion resistance is further improved by further forming a layer of resin 8. The resin used may be epoxy, acrylic, furan, alkyd, melamine, polyimide, polyethersulfone resin, or a combination of these resins, and the coating method may be spray coating or electrodeposition coating (Japanese Patent Application Laid-open No. 130453/1983). Please refer to the official bulletin).
なお、本発明は炉結法による等方性および異方性磁石、
さらにプラスチックとR−B−Fe系合金粉との複合磁
石いわゆるプラスチック磁石、一部に結晶質を有する非
晶質R−B −Fe粉を高温加圧成形(7た磁石、およ
び加圧成形後、−軸異方性を付与した磁石などの組成的
にR(Yを含む希土類元素の内少くとも1 in )
、 BおよびFeを必須元素とするR−B−Fe系の永
久磁石に適用可能である。Note that the present invention relates to isotropic and anisotropic magnets produced by furnace forming,
Furthermore, composite magnets of plastic and R-B-Fe alloy powder, so-called plastic magnets, and amorphous R-B-Fe powder with some crystallinity are molded under high temperature pressure (7), and after pressure molding. , -compositionally R (at least 1 inch of rare earth elements including Y) such as magnets with -axis anisotropy
, B and Fe as essential elements.
次に本発明を適用する希土類・ボロン・鉄系磁石の成分
限定理由について説明すると、本発明の磁石は希土類元
素R(但L RはYを含む希土類元素の少なくとも1種
)、ボロンおよび鉄を必須元素とする。さらに詳述する
と、Rとしてはネオジム(Nd)、プラセオジム(Pr
)’Fたはそれらの混合物(ジジム)が好讐しく、他に
ランタン(La) 、セリウム(Ce)、テルビウム(
Tb)、ジスプロシウム(Dy)。Next, to explain the reason for limiting the components of the rare earth/boron/iron magnet to which the present invention is applied, the magnet of the present invention contains the rare earth element R (where LR is at least one rare earth element including Y), boron, and iron. It is an essential element. To explain in more detail, R is neodymium (Nd), praseodymium (Pr
)'F or a mixture thereof (didymium) is preferable, as well as lanthanum (La), cerium (Ce), and terbium (
Tb), dysprosium (Dy).
ホルミウム(Ho)、エルビウム(Er) 、ユウロピ
ウム(Eu)、サマリウム(Srn)、ガドリニウム(
Gd)、グロメチウム(Prn)、ツリウム(Trn)
、イッテルピウム(Yb)、ルテチウム(Lu)及びイ
ツトリウム(Y)などの希土類元素を含んで良く、総量
で8〜60原子チとされる。8原子チ未満では十分な保
磁力が得られず、30原子チを越えると、残留磁束密度
が低下するためである。ボロンBは2〜28原子チとさ
れる。2原子チ未満では十分な保磁力が得られず、28
原子%を越えると残留磁束密度が低下し優れた磁気特性
が得られないためである。上記RおよびB以外の元素と
してFeは必須であf)40〜90原子チ含有される。Holmium (Ho), Erbium (Er), Europium (Eu), Samarium (Srn), Gadolinium (
Gd), glometium (Prn), thulium (Trn)
, ytterpium (Yb), lutetium (Lu), and yttrium (Y), with a total amount of 8 to 60 atoms. This is because if the amount is less than 8 atoms, a sufficient coercive force cannot be obtained, and if it exceeds 30 atoms, the residual magnetic flux density decreases. Boron B has 2 to 28 atoms. If it is less than 2 atoms, sufficient coercive force cannot be obtained, and 28
This is because if it exceeds atomic %, the residual magnetic flux density decreases and excellent magnetic properties cannot be obtained. Fe is essential as an element other than the above-mentioned R and B, and f) contains 40 to 90 atoms.
40原子チ未満では残留磁束密度(Br)が低下し、9
0原子チを越えると高い保磁力(iHc)が得られない
ためである。Below 40 atoms, the residual magnetic flux density (Br) decreases, and 9
This is because if it exceeds 0 atoms, a high coercive force (iHc) cannot be obtained.
上記R−BおよびFeを必須元素とし、希土類・ボロン
・鉄系磁石は作成されるが下記の如く、鉄の一部を他の
元素で置換することや、不純物を含んでも本発明の効果
は失われない。A rare earth/boron/iron magnet can be created using the above R-B and Fe as essential elements, but as described below, the effect of the present invention will not be achieved even if some of the iron is replaced with other elements or if impurities are included. not lost.
すなわち、Feの代シに、50原子チ以下のCar8原
子−以下のNiで代替しても良い。Coは50原子チを
越えると高いiHcが得られず、Niは8%を越えると
制いBrが得られないためである。また上記以外の元素
として下記所定原子チ以外のへ元素の1種以上(ただし
、2裡以上含む場合のへ元素の総量は当該含有A元素の
内最大値を有するものの値以下)をFe元索と置換して
も本発明の効果は失われないOA元素を下記する。That is, Fe may be replaced with Car8 atoms or less of 50 atoms or less and Ni of less than 8 atoms. This is because if Co exceeds 50 atoms, a high iHc cannot be obtained, and if Ni exceeds 8%, Br cannot be obtained. In addition, as elements other than the above, one or more of the elements other than the specified atoms below (however, if two or more are included, the total amount of the elements is less than or equal to the value of the maximum value of the contained A elements) The OA elements that do not lose the effect of the present invention even if replaced with are listed below.
以下、本発明を実施例によって説明する。 Hereinafter, the present invention will be explained by examples.
(実施例1)
特開昭59−46008号公報および特開昭60−18
2104号公報記載の公知の方法に基づいて、Nd−B
−Fe系焼結磁石を作製した。すなわち、63襲Nd−
1、1%B−残Feの組@:(重量%)および磁気特性
Br−11,7KG、Hc=11.1KOe 、 (B
H)WAX =33.5MGOe を有する磁石であ
る0上記臼石を寸法25X15X5諭に研摩加工し、溶
剤脱脂(1,1,1、トリクロルエタン)後、コロイダ
ル・シリカ溶液をスプレーコーティングし、大気中にて
160℃20分の加熱を行い固化しまた0
コロイダルシリカ溶液は、St 022 []%(重!
i%)。(Example 1) JP-A-59-46008 and JP-A-60-18
Based on the known method described in No. 2104, Nd-B
-Fe-based sintered magnets were produced. That is, 63 attacks Nd-
1.1%B-Remaining Fe pair @: (wt%) and magnetic properties Br-11.7KG, Hc=11.1KOe, (B
H) WAX = 33.5MGOe The above millstone is polished to a size of 25X15X5, and after solvent degreasing (1,1,1, trichloroethane), it is spray coated with colloidal silica solution and exposed to the atmosphere. The colloidal silica solution was solidified by heating at 160°C for 20 minutes.
i%).
Ti(hlo%、純水35%、イソプロピルアルコール
65%の構成であシ、加熱固化後のSi Oz薄膜の厚
みは、15μmであった。The composition was Ti (hlo%), 35% pure water, and 65% isopropyl alcohol, and the thickness of the SiOz thin film after heating and solidification was 15 μm.
上記サンプルについて60℃で90%相対湿度での10
0時間の耐食試験を行った。結果を第1表に示す。10 at 60°C and 90% relative humidity for the above sample.
A 0 hour corrosion resistance test was conducted. The results are shown in Table 1.
第 1 表
第1表に示すように100Hrsのテスト後では、外観
的異常(錆生成)は認められなかった。Table 1 As shown in Table 1, no abnormality in appearance (rust formation) was observed after the 100 hour test.
(比較例1)
コロイダル・シリカ溶液によるスプレーコーティングを
実施しない点のみが、実施例1と異なる例を比較例1と
して第1表に示す0
(実施例2)
コロイダル・シリカ溶液として、SiO220%(重(
1% ) 、 TiOz9.0%、 A12030 、
8%、Fe2030.1%、 Mg 00 、05%、
CaO0,05%、純水35%。(Comparative Example 1) An example that differs from Example 1 only in that no spray coating with a colloidal silica solution is performed is shown in Table 1 as Comparative Example 1. (Example 2) As a colloidal silica solution, 20% SiO2 ( Heavy (
1%), TiOz9.0%, A12030,
8%, Fe2030.1%, Mg 00 , 05%,
CaO 0.05%, pure water 35%.
イソプロピルアルコール65%の溶液を作成し、スプレ
ーコーティングを行う魚身外は実施例1と同様に行った
。塗膜厚みは14μmであった。さらに、エポキシ系塗
料をスプレー法にて表・裏面の2回に分けて塗装し、1
20℃、30分の焼付けを行った。エポキシ塗膜の厚み
は60μ聞であった。A solution of 65% isopropyl alcohol was prepared, and the same procedure as in Example 1 was carried out except for the spray coating of the fish. The coating film thickness was 14 μm. Furthermore, the epoxy paint was applied twice on the front and back sides using a spray method.
Baking was performed at 20°C for 30 minutes. The thickness of the epoxy coating was 60 μm.
上記サンプルについて、80℃、90チ相対湿度で20
0時間の耐食試験を行った。結果を第2表に、実施例2
として示す。For the above sample, 20°C at 80°C and 90° relative humidity
A 0 hour corrosion resistance test was conducted. The results are shown in Table 2, Example 2
Shown as
なお、耐食性試験は80℃、90%湿度の雰囲気に20
0時間放置した場合のサンプルの外観状況でもって評価
した0壕だ、密着強度試験は、耐食性試験後のサンプル
を粘着テープで1f1間隔の升目部分を引張り、表面層
が剥離するか否か(無剥離升目数/全升目数)で評価し
た。The corrosion resistance test was conducted at 80℃ and 90% humidity for 20 minutes.
The adhesion strength test is based on the appearance of the sample after it has been left for 0 hours.The adhesion strength test is performed by pulling the sample after the corrosion resistance test using adhesive tape, and checking whether the surface layer peels off or not. Evaluation was made based on the number of peeled squares/total number of squares).
第 2 表
第2表に見る叩く、Si 02系薄膜の上部に、エポキ
シ樹脂を塗膜することにより、80℃、90%相対湿度
、200時間の耐湿試験に耐え得ることが分る。Table 2 It can be seen that by coating an epoxy resin on the top of the Si 02 thin film shown in Table 2, it can withstand a humidity test at 80° C. and 90% relative humidity for 200 hours.
(実り例3)
コロイダル・シリカ溶液として、St 0220 ’A
(重量%)、TiO27%r Crz Os 2%、
Zr(h O,965%、Na200.02%、に2
00.01%、 B20s O、O05多、純水35%
、インプロピルアルコール65%の溶液を作成し、スプ
レーコーティングを行う点板外は、実施例1と同様に行
った。塗膜厚みは、15μmであった。さらにエポキシ
塗料をスプレー法にて、表、裏面の2回に分けて塗装し
、120℃、30分の焼付けを行った。エポキシ塗膜の
厚みは、60μmであった。(Fruitful Example 3) As a colloidal silica solution, St 0220'A
(wt%), TiO27%rCrzOs2%,
Zr(hO, 965%, Na200.02%, 2
00.01%, B20s O, O05 rich, pure water 35%
A solution of 65% inpropyl alcohol was prepared and spray coating was performed in the same manner as in Example 1. The coating film thickness was 15 μm. Furthermore, epoxy paint was applied twice to the front and back surfaces using a spray method, and baked at 120° C. for 30 minutes. The thickness of the epoxy coating was 60 μm.
上記サンプルについて、実施例2と同じ耐湿試験を行っ
た結果を、第2表に実施例3として示す。The above sample was subjected to the same moisture resistance test as in Example 2, and the results are shown as Example 3 in Table 2.
(発明の効果)
以上述べた如く本発明は、R−B −Fe系磁石表面に
Si 02を主要物質とするコロイダル・シリカ・アル
コール水溶液をスプレーコーティングし、加熱固化する
ことによシ、必要ならばさらに樹脂層を設けることによ
り、磁石表面の耐食性を改善。(Effects of the Invention) As described above, the present invention can be applied by spray coating a colloidal silica/alcohol aqueous solution containing Si02 as a main substance on the surface of an R-B-Fe magnet, and heating and solidifying the solution, if necessary. Furthermore, by adding a resin layer, the corrosion resistance of the magnet surface is improved.
向上するものでその工業的価値は極めて太きい。The industrial value of this product is extremely significant.
Claims (1)
も1種)、Bおよび鉄からなるR−B−Fe系磁石の表
面に、水・アルコールおよび無機質微粒子(SiO_2
)で構成されるコロイダル溶液を塗装し、加熱固化する
ことを特徴とする永久磁石の製造方法。 2、無機質微粒子としてさらにTiO_2、Cr_2O
_3、Al_2O_3、MgO、CaO、Na_2O、
K_2O、Fe_2O_3、B_2O_3、ZrO_2
の内少くとも1種を含有することを特徴とする特許請求
の範囲第1項記載の製造方法。 3、前記無機質微粒子による表面薄膜の上部に、さらに
樹脂層を設けることを特徴とする特許請求の範囲第1項
または第2項記載の製造方法。 4、R−B−Fe系磁石の表面に無機質材料(SiO_
2)から成る薄膜を設けることを特徴とする永久磁石。 5、無機質材料として、さらにTiO_2、Cr_2O
_3、Al_2O_3、MgO、CaO、Na_2O、
K_2O、Fe_2O_3、B_2O_3、ZrO_2
の内、少くとも1種を含有することを特徴とする特許請
求の範囲第4項記載の永久磁石。 6、無機質材料から成る薄膜の上部にさらに、樹脂層を
設けることを特徴とする特許請求の範囲第4項または第
5項記載の永久磁石。[Claims] 1. Water/alcohol and inorganic fine particles (SiO_2
) A method for producing a permanent magnet, characterized by coating the colloidal solution and solidifying it by heating. 2. TiO_2, Cr_2O as inorganic fine particles
_3, Al_2O_3, MgO, CaO, Na_2O,
K_2O, Fe_2O_3, B_2O_3, ZrO_2
The manufacturing method according to claim 1, characterized in that it contains at least one of the following. 3. The manufacturing method according to claim 1 or 2, further comprising providing a resin layer on top of the surface thin film made of the inorganic fine particles. 4. Inorganic material (SiO_
2) A permanent magnet characterized by being provided with a thin film comprising: 5. In addition, TiO_2, Cr_2O as inorganic materials
_3, Al_2O_3, MgO, CaO, Na_2O,
K_2O, Fe_2O_3, B_2O_3, ZrO_2
The permanent magnet according to claim 4, characterized in that it contains at least one of the following. 6. The permanent magnet according to claim 4 or 5, further comprising a resin layer on top of the thin film made of an inorganic material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13799387A JPS63301506A (en) | 1987-06-01 | 1987-06-01 | Permanent magnet and manufacture thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13799387A JPS63301506A (en) | 1987-06-01 | 1987-06-01 | Permanent magnet and manufacture thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63301506A true JPS63301506A (en) | 1988-12-08 |
Family
ID=15211555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13799387A Pending JPS63301506A (en) | 1987-06-01 | 1987-06-01 | Permanent magnet and manufacture thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63301506A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007305691A (en) * | 2006-05-09 | 2007-11-22 | Tdk Corp | Rare earth magnet |
KR101239597B1 (en) | 2004-05-28 | 2013-03-05 | 고쿠리츠다이가쿠호진 도호쿠다이가쿠 | Method for forming film on zirconium-based metallic glass surface and zirconium-based metallic glass component |
-
1987
- 1987-06-01 JP JP13799387A patent/JPS63301506A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101239597B1 (en) | 2004-05-28 | 2013-03-05 | 고쿠리츠다이가쿠호진 도호쿠다이가쿠 | Method for forming film on zirconium-based metallic glass surface and zirconium-based metallic glass component |
JP2007305691A (en) * | 2006-05-09 | 2007-11-22 | Tdk Corp | Rare earth magnet |
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