JPH028345A - Hard magnetic material and permanent magnet - Google Patents
Hard magnetic material and permanent magnetInfo
- Publication number
- JPH028345A JPH028345A JP1067766A JP6776689A JPH028345A JP H028345 A JPH028345 A JP H028345A JP 1067766 A JP1067766 A JP 1067766A JP 6776689 A JP6776689 A JP 6776689A JP H028345 A JPH028345 A JP H028345A
- Authority
- JP
- Japan
- Prior art keywords
- hard magnetic
- magnetic material
- composition
- materials
- permanent magnet
- 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
- 239000000696 magnetic material Substances 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 19
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 10
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 4
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 4
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 2
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 2
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 claims description 2
- 238000000137 annealing Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000011282 treatment Methods 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract description 2
- 239000007858 starting material Substances 0.000 abstract description 2
- 238000005056 compaction Methods 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 8
- 238000001953 recrystallisation Methods 0.000 description 4
- 230000005415 magnetization Effects 0.000 description 3
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical group [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000001639 boron compounds Chemical class 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 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
-
- 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
- H01F1/058—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IVa elements, e.g. Gd2Fe14C
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (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、希土類金属、鉄および炭素を含む硬質磁気材
料に関するもので、ある。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to hard magnetic materials containing rare earth metals, iron and carbon.
本発明は、また硬質磁気材料に基づく磁石に関するもの
である。The invention also relates to magnets based on hard magnetic materials.
（従来の技術）
上記の型の硬質磁気材料は、特にジエー・アルプ・フィ
ズ、 （Ｊ、 Ａｐｐｌ、 Ｐｈｙｓ、） ６１ ３５
７４〜３５７６（１９Ｂ？）により知られている。この
文献の著者は記載されているＮｄ２Ｆｅ、Ｃ化合物を安
定でないものと分類している。BACKGROUND OF THE INVENTION Hard magnetic materials of the above type are described in particular by G. Arp-Phys, (J. Appl. Phys.) 61 35
74-3576 (19B?). The authors of this document classify the Nd2Fe,C compounds described as not stable.
（発明が解決しようとする課題）
本発明の目的は希土類金属（ＲＥ）、鉄および炭素を含
み且つ安定である硬質磁気材料を提供することにある。(Problems to be Solved by the Invention) An object of the present invention is to provide a stable hard magnetic material containing rare earth metals (RE), iron and carbon.
（課題を解決するための手段）
上記目的は、本発明により、次式
％式％
（次式のＲＥはネオジム（Ｎｄ）、プラセオジム（Ｐｒ
）、セリウム（Ｃｅ）およびランタン（Ｌａ）から成る
群から選ばれた少くとも１種の元素を示し、０．２≦ｘ
≦２である）で表わされる組成をもった硬質磁気相を有
することを特徴とする硬質磁気材料により達成される。(Means for Solving the Problems) According to the present invention, the above object is achieved by the following formula % formula % (RE in the following formula is neodymium (Nd), praseodymium (Pr
), represents at least one element selected from the group consisting of cerium (Ce) and lanthanum (La), and 0.2≦x
≦2).
Ｘの値は無作為に選択することができないことを見出し
た。Ｘが０．２より小である材料は十分に安定でないこ
とを確かめた。Ｘが２より大である材料のキューリー温
度はほぼ室温または温室以下であり、これはこれ等の材
料を磁気的用途に当てるために問題になる。原則として
、キューリー温度は材料中に存在する鉄の一部分をコバ
ルトで置換することでより上げることができる。We have found that the value of X cannot be chosen randomly. It has been found that materials with X less than 0.2 are not sufficiently stable. The Curie temperature of materials where X is greater than 2 is approximately room temperature or below greenhouse temperature, which is problematic for applying these materials to magnetic applications. In principle, the Curie temperature can be increased further by replacing a portion of the iron present in the material with cobalt.
本発明に係る化合物中にＢが存在しないことは、この結
果上記化合物を調整する間有毒の揮発性硼素化合物が形
成されないので有利である。The absence of B in the compounds according to the invention is advantageous, since as a result no toxic volatile boron compounds are formed during the preparation of the compounds.
実験で更に、本発明に係る化合物の硬質磁気相は、既知
のＮｄ２Ｆｅ、４Ｂの場合のＴｈＭｎ、２型の正方晶構
造を有する。下表に示す如く、本発明に係る化合物のキ
ューリー温度（Ｔｃ）は３００〜５５０にである。同一
の希土類金属を含む本発明に係る化合物のキューリー温
度はＭｎ含有量が大になる程低い。Experiments have further shown that the hard magnetic phase of the compounds according to the invention has a tetragonal structure of the known type 2, ThMn in the case of Nd2Fe, 4B. As shown in the table below, the Curie temperature (Tc) of the compounds according to the present invention is between 300 and 550. The Curie temperature of the compounds according to the present invention containing the same rare earth metal becomes lower as the Mn content increases.
表
化合物 キューリー温度
ＮｄＪｅ＋ ３．７Ｍｎｏ、３Ｃ５０５ＮｄｚＦｅ、
３． ｓＭｎｏ、 ｓＣ４９２Ｎｄ２Ｆｅ、 ３ＭｎＣ
４５２
Ｎｄ２Ｆｅ＋ｚ、 ５Ｍｎ１．５ｃ
４０ＯＮｄｚＦｅ＋ Ｊｒ＋ｚＣ３５５
Ｐｒ２Ｆｅｌ ３．７Ｍｎｏ、 ３Ｃ４８１ＰｒｚＦｅ
＋ ３． ｓＭｎｏ、 ５Ｃ４６０ＰｒｚＦｅ＋ Ｊｒ
ｒＣ４１２
Ｐｒ２Ｆｅ、 ２Ｍｎ２Ｃ３０６
本発明の硬質磁気材料は、通常の方法で適当な出発物質
を組成式に相当する比で一緒に融解し、然し後これ等を
保護ガス中または真空中８００〜９５０°Ｃの範囲の温
度でアニール処理することにより得ることができ；この
処理を行う間再結晶が行われる。Table compound Curie temperature NdJe+ 3.7Mno, 3C505NdzFe,
3. sMno, sC492Nd2Fe, 3MnC
452 Nd2Fe+z, 5Mn1.5c
40ONdzFe+ Jr+zC355 Pr2Fel 3.7Mno, 3C481PrzFe
+3. sMno, 5C460PrzFe+ Jr
rC412 Pr2Fe, 2Mn2C306 The hard magnetic materials of the invention are prepared by melting together suitable starting materials in the ratio corresponding to the formula in the usual manner, but then heating them at 800-950°C in a protective gas or in vacuum. It can be obtained by annealing at a temperature in the range; recrystallization takes place during this treatment.
本発明を達成する間行った実験において、硬質磁気相を
有し、その組成が弐ＮｄｚＦｅ１４Ｃに相当する安定な
物質の製造が原則として達成し得ることが本発明者等に
明らかとなった。このことは組成式ＮｄｚＦｅｚｃの紡
物を狭い範囲の温度、好ましくは８５０〜８８０°Ｃの
温度で長いアニール処理を行うごとにより達成され、こ
のアニール処理を行う間再結晶が行われる。本発明者等
は既知方法と比較して本発明の材料の製造が、所望の正
方晶構造体を得るために再結晶を行うためのアニール処
理が短かくでよいと考える理由をもつ、更に、本発明の
材料の場合アニール処理は更に広範囲の温度において行
うことができる。他方この安定な材料は、また式Ｎｄｚ
Ｆｅ、４Ｃで表わされる組成物を溶解紡糸し、次いで形
成されたリボンをアニール処理することにより製造する
ことができ、アニール処理を行う間再結晶が行われる。In the experiments carried out while working on the invention, it has become clear to the inventors that the production of stable materials with a hard magnetic phase and whose composition corresponds to 2NdzFe14C can in principle be achieved. This is achieved by subjecting the spindle of formula NdzFezc to long annealing treatments over a narrow range of temperatures, preferably between 850 DEG and 880 DEG C., during which recrystallization takes place. The inventors have reason to believe that compared to known methods, the production of the material of the invention requires a shorter annealing process for recrystallization to obtain the desired tetragonal structure; For the materials of the present invention, annealing can be carried out over a wider range of temperatures. On the other hand, this stable material also has the formula Ndz
It can be produced by melt spinning a composition represented by Fe, 4C and then annealing the formed ribbon, during which recrystallization takes place.
両既知方法は経済的観点から劣るという欠点を有する。Both known methods have the disadvantage of being inferior from an economic point of view.
本発明における化合物の硬質磁気特性はＮｄｚＦｅ１４
Ｂに基づく材料のものに匹敵する。例えば温室でＮｄｚ
Ｆｅ＋：＋、 ７Ｍｎｏ、 ３Ｃ粉末で測定した磁化は
約１０１００Ａ／ｋｇである。この値は室温でＮｄｚＦ
ｅ＋Ｊで測定される飽和磁化に匹敵する。この値は考慮
しでいる材料が磁気的に極めて異方性であるので、飽和
磁化と見做されない。The hard magnetic properties of the compound in the present invention are NdzFe14
Comparable to that of materials based on B. For example, Ndz in a greenhouse
The magnetization measured for Fe+:+, 7Mno, 3C powder is approximately 10100 A/kg. This value is NdzF at room temperature
Comparable to the saturation magnetization measured at e+J. This value cannot be considered a saturation magnetization since the material under consideration is magnetically highly anisotropic.
得られた材料を粉砕した後、上記材料から通常の方法で
成形体の形態の磁石を製造することができる。After grinding the material obtained, magnets in the form of shaped bodies can be produced from the material in the usual manner.
特 許 出 願 人 工ヌ・ベー・フィリップス。Special permission Out wish Man Engineering B.Phillips.
フルーイランペンファブリケンFluyl ylan pen fabriken
Claims (3)
びランタンから成る群から選ばれた少くとも１種の元素
を示し、０．２≦ｘ≦２である）で表わされる組成をも
った硬質磁気相を有することを特徴とする希土類金属、
鉄および炭素を含む硬質磁気材料。1. It has a composition represented by the following formula RE_2Fe_1_4_−_xMn_xC (RE in the formula represents at least one element selected from the group consisting of neodymium, praseodymium, cerium, and lanthanum, and 0.2≦x≦2). a rare earth metal characterized by having a hard magnetic phase;
Hard magnetic materials containing iron and carbon.
したことを特徴とする請求項１記載の硬質磁気材料。2. A hard magnetic material according to claim 1, characterized in that a part of the iron present in the material is replaced by cobalt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8800739A NL8800739A (en) | 1988-03-24 | 1988-03-24 | HARDMAGNETIC MATERIAL. |
| NL8800739 | 1988-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH028345A true JPH028345A (en) | 1990-01-11 |
Family
ID=19851992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1067766A Pending JPH028345A (en) | 1988-03-24 | 1989-03-22 | Hard magnetic material and permanent magnet |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0334445A1 (en) |
| JP (1) | JPH028345A (en) |
| KR (1) | KR890015303A (en) |
| CN (1) | CN1036101A (en) |
| NL (1) | NL8800739A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5478411A (en) * | 1990-12-21 | 1995-12-26 | Provost, Fellows And Scholars Of The College Of The Holy And Undivided Trinity Of Queen Elizabeth Near Dublin | Magnetic materials and processes for their production |
-
1988
- 1988-03-24 NL NL8800739A patent/NL8800739A/en not_active Application Discontinuation
-
1989
- 1989-03-20 CN CN89101680A patent/CN1036101A/en active Pending
- 1989-03-20 EP EP89200693A patent/EP0334445A1/en not_active Withdrawn
- 1989-03-21 KR KR1019890003486A patent/KR890015303A/en not_active Application Discontinuation
- 1989-03-22 JP JP1067766A patent/JPH028345A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| KR890015303A (en) | 1989-10-28 |
| CN1036101A (en) | 1989-10-04 |
| EP0334445A1 (en) | 1989-09-27 |
| NL8800739A (en) | 1989-10-16 |
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