JPS63304602A - Resin-bonded magnet - Google Patents
Resin-bonded magnetInfo
- Publication number
- JPS63304602A JPS63304602A JP62139382A JP13938287A JPS63304602A JP S63304602 A JPS63304602 A JP S63304602A JP 62139382 A JP62139382 A JP 62139382A JP 13938287 A JP13938287 A JP 13938287A JP S63304602 A JPS63304602 A JP S63304602A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- resin
- bonding agent
- magnetic powder
- rare earth
- 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.)
- Granted
Links
- 239000006247 magnetic powder Substances 0.000 claims abstract description 25
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 21
- 239000000057 synthetic resin Substances 0.000 claims abstract description 20
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 15
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 12
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 8
- 239000010452 phosphate Substances 0.000 claims abstract description 8
- 238000000748 compression moulding Methods 0.000 claims abstract description 7
- 229910000765 intermetallic Inorganic materials 0.000 claims abstract description 5
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 5
- 150000003624 transition metals Chemical class 0.000 claims abstract description 5
- 239000011230 binding agent Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 abstract description 12
- 239000011347 resin Substances 0.000 abstract description 12
- 230000006866 deterioration Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 5
- 229920001187 thermosetting polymer Polymers 0.000 abstract description 3
- 239000004952 Polyamide Substances 0.000 abstract description 2
- -1 and further Polymers 0.000 abstract description 2
- 229920002647 polyamide Polymers 0.000 abstract description 2
- 229920005992 thermoplastic resin Polymers 0.000 abstract description 2
- 239000007767 bonding agent Substances 0.000 abstract 5
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 230000003449 preventive effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 230000004907 flux Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 239000002075 main ingredient Substances 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 2
- 229910000165 zinc phosphate Inorganic materials 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- TVWHTOUAJSGEKT-UHFFFAOYSA-N chlorine trioxide Chemical compound [O]Cl(=O)=O TVWHTOUAJSGEKT-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000002084 dioxo-lambda(5)-bromanyloxy group Chemical group *OBr(=O)=O 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical class OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- CPSYWNLKRDURMG-UHFFFAOYSA-L hydron;manganese(2+);phosphate Chemical compound [Mn+2].OP([O-])([O-])=O CPSYWNLKRDURMG-UHFFFAOYSA-L 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000398 iron phosphate Inorganic materials 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0578—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together bonded together
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- 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」
本発明は樹脂結合型磁石に関し、更に詳しくは製造工程
中皿に使用中における酸化劣化を防止した樹脂結合型磁
石に関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a resin-bonded magnet, and more particularly to a resin-bonded magnet that prevents oxidative deterioration during the manufacturing process and during use in a plate.
「従来技術と問題点」
希土類金属と遷移金属とを主成分とする合金磁石（以下
、希土類磁石という）は、従来のフェライト系、アルニ
コ系磁石と比べて、優れた磁気特性を有しているため、
近年小型モーターを中心として多方面に利用されている
。"Prior Art and Problems" Alloy magnets whose main components are rare earth metals and transition metals (hereinafter referred to as rare earth magnets) have superior magnetic properties compared to conventional ferrite and alnico magnets. For,
In recent years, it has been used in a variety of fields, mainly in small motors.
かかる希土類磁性粉体を結合剤である合成樹脂で固着せ
しめた樹脂結合型磁石（以下、プラスチック磁石と称す
る）は、樹脂との混練時又は成形時に高温に曝されるが
、希土類磁性粉体は非常に酸化され易く、プラスチック
磁石を製造する工程で酸化される。その結果、得られる
希土類プラスチック磁石の磁気特性は著しく低下し、か
つ錆の発生が顕著となる。また、製造中に酸化が急激に
進み、発火する場合も起こり得る。Resin-bonded magnets (hereinafter referred to as plastic magnets), in which such rare earth magnetic powder is fixed with a synthetic resin as a binder, are exposed to high temperatures during kneading with resin or molding. It is highly oxidized and is oxidized during the process of manufacturing plastic magnets. As a result, the magnetic properties of the resulting rare earth plastic magnet are significantly degraded, and the occurrence of rust becomes noticeable. In addition, oxidation may rapidly progress during manufacturing, and ignition may occur.
そこで、製造中にできるだけ高温に曝されない圧縮成形
方法等により製造することが考えられるが、この場合に
おいても製品を結合剤である合成樹脂の耐熱温度近辺で
使用される場合には、使用中の酸化劣化は避けられず、
磁気特性が次第に低下するという問題を孕んでいる。Therefore, it may be possible to manufacture the product using a compression molding method that does not expose it to high temperatures as much as possible during manufacturing, but even in this case, if the product is used near the heat-resistant temperature of the synthetic resin that is the binder, Oxidative deterioration is inevitable,
The problem is that the magnetic properties gradually deteriorate.
かかる問題を克服するために、特開昭６１−２５３３０
２号には希土類磁性粉体をｐＫａが４以下の活性プロト
ンを有するリン化合物と接触させ、酸素を含有する雰囲
気に曝す方法が提案され、また特開昭６１−１８４８０
４号には希土類磁性粉体を高分子樹脂で被覆する方法が
開示されている。In order to overcome this problem, Japanese Patent Application Laid-Open No. 61-25330
No. 2 proposed a method in which rare earth magnetic powder is brought into contact with a phosphorus compound having active protons with a pKa of 4 or less and exposed to an oxygen-containing atmosphere.
No. 4 discloses a method of coating rare earth magnetic powder with a polymer resin.
しかし乍ら、上記いずれの方法も成る程度の酸化劣化防
止効果は認められるものの、実用上十分に満足し得るも
のとは言い難い。However, although all of the above-mentioned methods have been found to be effective in preventing oxidative deterioration, they cannot be said to be fully satisfactory in practical terms.
「問題点を解決するための手段」
本発明者らはかかる実情に鑑み、鋭意研究の結果、上記
従来技術において十分な効果を得られな−い原因は圧縮
成形時において被覆処理された磁性粉体が破壊され、酸
化され易い磁性粉体表面が露出することにあることを突
きとめ、圧縮成形後の成形体の空隙部に合成樹脂を含浸
させ磁性粉体と外気とを遮断することにより、上記問題
が解消されることを見出し、本発明を完成させたもので
ある。``Means for Solving the Problems'' In view of the above circumstances, the inventors of the present invention have conducted intensive research and found that the reason why the above-mentioned conventional technology cannot obtain sufficient effects is that the magnetic powder coated during compression molding is They discovered that the magnetic powder's surface, which is easily oxidized, was exposed when the body was destroyed, and by impregnating the voids of the compact after compression molding with synthetic resin to isolate the magnetic powder from the outside air. The present invention has been completed by discovering that the above problem can be solved.
即ち、本発明はＲ−Ｆｅ−Ｂ（ＲはＮｄ及び／又はＰｒ
、又はこれらの１部を１種又は２種以上の希土類元素で
置換したもの）で表され、表面にリン酸塩を被覆せしめ
た希土類金属と遷移金属とを主成分とする防錆金属間化
合物磁牲粉体と結合剤である合成樹脂とを主たる構成成
分としてなり、圧縮成形後結合剤を硬化固化せしめるこ
とによって形成される多孔質成形体の空隙部に合成樹脂
を含浸させたことを特徴とする樹脂結合型磁石を内容と
するものである。That is, the present invention provides R-Fe-B (R is Nd and/or Pr
, or one part of which is replaced with one or more rare earth elements), and the surface is coated with a phosphate, and the rust-preventing intermetallic compound is mainly composed of rare earth metals and transition metals. The main components are magnetic powder and a synthetic resin as a binder, and the synthetic resin is impregnated into the voids of a porous molded body formed by hardening and solidifying the binder after compression molding. The content is a resin bonded magnet.
本発明で用いられる希土類金属と遷移金属とを主成分と
する金属間化合物磁性粉体とはＲ−Ｆｅ−Ｂ系（ＲはＮ
ｄ及び／又はＰ ｒ ％又はこれらの一部を１種又は２
種以上の希土類元素で置換したものであって、磁気特性
を改善するために、Ａ１、Ｃｏ、Ｇａ、Ｄｙ等を添加し
てもよい）として知られている磁性粉体である。該磁性
粉体の粒径は１〜１５０μｍ程度が好ましい。The intermetallic compound magnetic powder mainly composed of rare earth metals and transition metals used in the present invention is an R-Fe-B system (R is N
d and/or P r % or a part of these, one or two
This is a magnetic powder known as A1, Co, Ga, Dy, etc. may be added to improve the magnetic properties. The particle size of the magnetic powder is preferably about 1 to 150 μm.
本発明で用いられる結合剤としての合成樹脂は、フェノ
ール樹脂、エポキシ樹脂、メラミン樹脂その他の熱硬化
性樹脂、更にはポリアミド、ポリオレフィン、ポリフェ
ニレンサルファイドその他の熱可塑性樹脂が例示できる
が、高温に保持した状態において軟化、変形しない熱硬
化性樹脂が好ましい。Examples of the synthetic resin used as a binder in the present invention include phenolic resin, epoxy resin, melamine resin, and other thermosetting resins, as well as polyamide, polyolefin, polyphenylene sulfide, and other thermoplastic resins. Thermosetting resins that do not soften or deform under certain conditions are preferred.
更に、滑剤、熱安定剤、可塑剤、その他改質剤等通常用
いられる添加剤を加えることもできる。Furthermore, commonly used additives such as lubricants, heat stabilizers, plasticizers, and other modifiers can also be added.
本発明に用いられるリン酸塩としては、防錆を目的とし
たリン酸塩皮膜処理剤が好適で、例えばリン酸マンガン
系、リン酸亜鉛系、リン酸鉄系、リン酸ナトリウム系等
の化合物が挙げられ、更に具体的にはＭｎ（ＨｚＰＯｎ
）ｚ、 Ｚｎ（ＨｚＰＯＪｚ、 Ｆｅ（ＩＩ。ＰＯａ）
ｚ。As the phosphate used in the present invention, phosphate film treatment agents for the purpose of rust prevention are suitable, such as manganese phosphate-based, zinc phosphate-based, iron phosphate-based, sodium phosphate-based compounds, etc. More specifically, Mn (HzPOn
)z, Zn(HzPOJz, Fe(II.POa)
z.
ＮａＨ２ＰＯ，等が挙げられる。また、助剤としては、
ＬＰ（Ｌ、 ＮＯ３，ＣｌＯ３，ＢｒＯ３等が例示され
る。希土類磁性粉体表面にリン酸塩を被覆する方法とし
ては、浸漬法、噴霧法等により、通常、常温〜１００℃
で数分〜数時間接触させた後乾燥する。NaH2PO, etc. are mentioned. In addition, as an auxiliary agent,
Examples include LP (L, NO3, ClO3, BrO3, etc.) The surface of the rare earth magnetic powder is coated with phosphate by a dipping method, a spraying method, etc., usually at room temperature to 100°C.
After being in contact for several minutes to several hours, dry.
本発明に用いられる成形体の空隙部及び表面に含浸被覆
される合成樹脂としては、上記結合剤としての合成樹脂
の他、メチルセルローズ、エチルセルローズ、ニトロセ
ルローズ、ポリビニルアルコール等が例示されるが、特
に希土類磁性粉体との接着性に優れたエポキシ樹脂が好
適である。合成樹脂の含浸は樹脂溶液中に成形体を浸漬
する方法（好ましいは真空中で）、静水圧プレスを用い
て圧力下で樹脂溶液を成形体の空隙部に浸透させる方法
等が好適である。樹脂溶液の濃度は余り低濃度すぎると
含浸は容易となるが、磁性粉体表面を十分に被覆するこ
とが困難となり、一方、余り高濃度となると成形体表面
の被覆の厚みにバラツキが生じ寸法精度が低下する。従
って、固形分として５〜２０重量％の範囲が好適である
。Examples of the synthetic resin to be impregnated and coated in the voids and surfaces of the molded article used in the present invention include methyl cellulose, ethyl cellulose, nitrocellulose, polyvinyl alcohol, etc. in addition to the synthetic resin as the binder described above. Particularly suitable is an epoxy resin that has excellent adhesiveness to rare earth magnetic powder. Suitable methods for impregnating the synthetic resin include a method in which the molded body is immersed in a resin solution (preferably in a vacuum), a method in which a resin solution is permeated into the voids of the molded body under pressure using a hydrostatic press, and the like. If the concentration of the resin solution is too low, impregnation will be easy, but it will be difficult to sufficiently cover the surface of the magnetic powder.On the other hand, if the concentration is too high, the thickness of the coating on the surface of the molded object will vary, resulting in poor dimensions. Accuracy decreases. Therefore, the solid content is preferably in the range of 5 to 20% by weight.
「実施例」
以下、本発明を実施例及び比較例を挙げて説明するが、
本発明はこれらにより何ら制限されない。"Examples" The present invention will be explained below with reference to Examples and Comparative Examples.
The present invention is not limited in any way by these.
参考例１；リン酸塩による処理磁性粉体Ａの調製Ｎｄ−
Ｆｅ−Ｂ磁性粉体１００ｇを主剤：Ｚｎ（８２ＰＯ４）
２、酸化剤：硝酸からなる温度６０℃、ｐ）ｌ−２，
５のリン酸亜鉛皮膜処理液に浸漬し、１５分間攪拌を行
った。その後、処理液の上澄液を除き、処理磁性粉体を
水洗し、１００℃Ｘ３ｈｒの条件で乾燥させて処理磁性
粉体Ａを得た。Reference Example 1; Preparation of magnetic powder A treated with phosphate Nd-
100g of Fe-B magnetic powder as main ingredient: Zn (82PO4)
2. Oxidizing agent: nitric acid, temperature 60°C, p) l-2,
It was immersed in the zinc phosphate film treatment solution of No. 5 and stirred for 15 minutes. Thereafter, the supernatant liquid of the treated solution was removed, and the treated magnetic powder was washed with water and dried at 100° C. for 3 hours to obtain treated magnetic powder A.
参考例２ニリン酸塩による処理磁性粉体Ｂの調製参考例
１と同一の磁性粉体１００ｇを主剤二Ｍ口（）１２ＰＯ
４） ｚ、酸化剤：硝酸からなるリン酸Ｍｎ皮膜処理液
に浸漬する以外は参考例１と同様の操作を行い、処理磁
性粉体Ｂを得た。Reference Example 2 Preparation of Magnetic Powder B Treated with Diphosphate Salt 100 g of the same magnetic powder as in Reference Example 1 was added to the main ingredient 2M () 12PO
4) Z, oxidizing agent: Treated magnetic powder B was obtained by carrying out the same operation as in Reference Example 1 except for immersing it in a phosphoric acid Mn film treatment solution consisting of nitric acid.
実施例１〜５
参考例１と２によって得られた処理磁性粉体ＡとＢと、
第１表に示した成分割合の合成樹脂とを攪拌混合し、得
られた混合物を常温でプレス成形した後、１８０℃×２
ｈｒの温度下で合成樹脂を硬化せしめ、外径８ｆｌ、内
径５ｍｍ、高さ４ｆｌのリング状成形体を得た。Examples 1 to 5 Treated magnetic powders A and B obtained in Reference Examples 1 and 2,
After stirring and mixing the synthetic resin with the component ratio shown in Table 1 and press-molding the obtained mixture at room temperature,
The synthetic resin was cured at a temperature of hr to obtain a ring-shaped molded body having an outer diameter of 8 fl, an inner diameter of 5 mm, and a height of 4 fl.
しかる後、第１表に記した含浸処理樹脂を溶剤で希釈し
て低粘度液とし、前記リング状成形体を含浸処理液に浸
漬し、１分間保持した。その後、リング状成形体を含浸
処理液より取り出し含浸処理樹脂の硬化温度下で処理樹
脂を硬化させパルス着磁法で１０極着磁を行い、試験試
料とした。Thereafter, the impregnating resin shown in Table 1 was diluted with a solvent to make a low viscosity liquid, and the ring-shaped molded body was immersed in the impregnating liquid and maintained for 1 minute. Thereafter, the ring-shaped molded body was taken out from the impregnation treatment liquid, the treatment resin was cured at the curing temperature of the impregnation treatment resin, and 10-pole magnetization was performed using a pulse magnetization method to prepare a test sample.
以上の操作によって得られた各試験試料を９０℃×９５
％ＰＨの恒温恒湿槽に静置し、１００時間経過後の各試
料の錆の発生状況の観察と総磁束量の変化率を測定し、
結果を第１表に記した。総磁束量はフラックスメーター
を用いて測定した。Each test sample obtained by the above procedure was heated at 90°C
%PH in a constant temperature and humidity chamber, and after 100 hours, each sample was observed for rust formation and the rate of change in total magnetic flux was measured.
The results are shown in Table 1. The total amount of magnetic flux was measured using a flux meter.
第１表より、本発明によれば、錆の発生を大巾に軽減で
きるだけでなく、総磁束量の減少率も小さくなり、酸化
を防止していることがわかる。From Table 1, it can be seen that according to the present invention, not only the occurrence of rust can be greatly reduced, but also the rate of decrease in the total amount of magnetic flux is reduced, and oxidation is prevented.
比較例１〜２
参考例１と２によって得られた処理磁粉ＡとＢを、第１
表に示した成分割合の合成樹脂とを攪拌混合し、得られ
た混合物を常温でプレス成形した後、１８０℃×２ｈｒ
の温度下で合成樹脂を硬化せしめ、外径８１、内径６１
ｍ、高さ４１ｍのリング状成形体を得た。該リング状成
形体を実施例１〜５と同様の条件で耐湿テストを行い、
結果を第１表に記した。Comparative Examples 1 to 2 The treated magnetic powders A and B obtained in Reference Examples 1 and 2 were
After stirring and mixing the synthetic resin with the component ratio shown in the table and press-molding the obtained mixture at room temperature,
The synthetic resin is cured at a temperature of 81 mm in outer diameter and 61 mm in inner diameter.
A ring-shaped molded body with a height of 41 m and a height of 41 m was obtained. The ring-shaped molded body was subjected to a moisture resistance test under the same conditions as in Examples 1 to 5,
The results are shown in Table 1.
比較例３
リン酸塩処理を施していないＮｄ−Ｆｅ−Ｂｍ性粉体を
用いる平易外は実施例１〜５と同様の操作を行い、耐湿
テスト後の結果を第１表に記した。Comparative Example 3 The same operations as in Examples 1 to 5 were carried out using Nd-Fe-Bm powder that was not subjected to phosphate treatment, and the results after the moisture resistance test are shown in Table 1.
「作用・効果」
畝上の通り、本発明によれば、発錆、酸化劣化が防止さ
れ、酸化に起因する磁気特性の低下が回避される。"Action/Effect" As mentioned above, according to the present invention, rusting and oxidative deterioration are prevented, and deterioration of magnetic properties due to oxidation is avoided.
Claims (1)
らの１部を１種又は２種以上の希土類元素で置換したも
の）で表され、表面にリン酸塩を被覆せしめた希土類金
属と遷移金属とを主成分とする防錆金属間化合物磁牲粉
体と結合剤である合成樹脂とを主たる構成成分としてな
り、圧縮成形後結合剤を硬化固化せしめることによって
形成される多孔質成形体の空隙部及び表面に合成樹脂を
含浸被覆させたことを特徴とする樹脂結合型磁石。1. Rare earth metal represented by R-Fe-B (R is Nd and/or Pr, or a part of these replaced with one or more rare earth elements) and whose surface is coated with phosphate. A porous material whose main constituents are rust-preventing intermetallic compound magnetic powder containing metals and transition metals and a synthetic resin as a binder, and is formed by curing and solidifying the binder after compression molding. A resin-bonded magnet characterized by impregnating and coating the voids and surfaces of a molded body with a synthetic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62139382A JPH0666176B2 (en) | 1987-06-03 | 1987-06-03 | Method for manufacturing resin-bonded magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62139382A JPH0666176B2 (en) | 1987-06-03 | 1987-06-03 | Method for manufacturing resin-bonded magnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63304602A true JPS63304602A (en) | 1988-12-12 |
| JPH0666176B2 JPH0666176B2 (en) | 1994-08-24 |
Family
ID=15244013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62139382A Expired - Lifetime JPH0666176B2 (en) | 1987-06-03 | 1987-06-03 | Method for manufacturing resin-bonded magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0666176B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0405321A1 (en) * | 1989-06-27 | 1991-01-02 | Kanegafuchi Kagaku Kogyo Kabushiki Kaisha | Magnet and method for manufacturing the same |
| JPH03110804A (en) * | 1989-09-25 | 1991-05-10 | Tokin Corp | Manufacture of nd-fe-b bonded magnet |
| EP0647953A2 (en) * | 1993-10-06 | 1995-04-12 | Yasunori Takahashi | A powdery raw material composition for a permanent magnet, a permanent magnet and a method for producing the magnet |
| EP0675511A1 (en) * | 1994-03-30 | 1995-10-04 | Yasunori Takahashi | Material for permanent magnet, production method thereof and permanent magnet |
| US8105443B2 (en) | 2006-04-25 | 2012-01-31 | Vacuumschmelze Gmbh & Co. | Non-ageing permanent magnet from an alloy powder and method for the production thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49110528A (en) * | 1973-02-23 | 1974-10-21 | ||
| JPS54121999A (en) * | 1978-03-14 | 1979-09-21 | Toshiba Corp | Manufacture of permanent magnet |
| JPS619501A (en) * | 1984-06-25 | 1986-01-17 | Mitsui Toatsu Chem Inc | Treatment of magnetic powder |
| JPS61253302A (en) * | 1985-05-02 | 1986-11-11 | Mitsui Toatsu Chem Inc | Treatment of magnetic powder |
-
1987
- 1987-06-03 JP JP62139382A patent/JPH0666176B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49110528A (en) * | 1973-02-23 | 1974-10-21 | ||
| JPS54121999A (en) * | 1978-03-14 | 1979-09-21 | Toshiba Corp | Manufacture of permanent magnet |
| JPS619501A (en) * | 1984-06-25 | 1986-01-17 | Mitsui Toatsu Chem Inc | Treatment of magnetic powder |
| JPS61253302A (en) * | 1985-05-02 | 1986-11-11 | Mitsui Toatsu Chem Inc | Treatment of magnetic powder |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0405321A1 (en) * | 1989-06-27 | 1991-01-02 | Kanegafuchi Kagaku Kogyo Kabushiki Kaisha | Magnet and method for manufacturing the same |
| JPH03110804A (en) * | 1989-09-25 | 1991-05-10 | Tokin Corp | Manufacture of nd-fe-b bonded magnet |
| EP0647953A2 (en) * | 1993-10-06 | 1995-04-12 | Yasunori Takahashi | A powdery raw material composition for a permanent magnet, a permanent magnet and a method for producing the magnet |
| EP0647953A3 (en) * | 1993-10-06 | 1995-04-26 | Takahashi Yasunori | |
| EP0675511A1 (en) * | 1994-03-30 | 1995-10-04 | Yasunori Takahashi | Material for permanent magnet, production method thereof and permanent magnet |
| KR100390308B1 (en) * | 1994-03-30 | 2003-09-06 | 다카하시야스노리 | Permanent magnet raw materials, their manufacturing method and permanent magnet |
| US8105443B2 (en) | 2006-04-25 | 2012-01-31 | Vacuumschmelze Gmbh & Co. | Non-ageing permanent magnet from an alloy powder and method for the production thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0666176B2 (en) | 1994-08-24 |
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