JPS62170455A - Permanent magnet alloy - Google Patents
Permanent magnet alloyInfo
- Publication number
- JPS62170455A JPS62170455A JP61012668A JP1266886A JPS62170455A JP S62170455 A JPS62170455 A JP S62170455A JP 61012668 A JP61012668 A JP 61012668A JP 1266886 A JP1266886 A JP 1266886A JP S62170455 A JPS62170455 A JP S62170455A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- atomic
- less
- atom
- 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.)
- Granted
Links
- 239000000956 alloy Substances 0.000 title abstract description 12
- 229910045601 alloy Inorganic materials 0.000 title abstract description 12
- 229910052772 Samarium Inorganic materials 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 229910052692 Dysprosium Inorganic materials 0.000 claims abstract description 4
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 4
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [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 claims abstract description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 4
- 229910052693 Europium Inorganic materials 0.000 claims abstract description 3
- 229910052765 Lutetium Inorganic materials 0.000 claims abstract description 3
- 229910052775 Thulium Inorganic materials 0.000 claims abstract description 3
- 229910052769 Ytterbium Inorganic materials 0.000 claims abstract description 3
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 3
- 229910052684 Cerium Inorganic materials 0.000 claims abstract 2
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract 2
- -1 E r Inorganic materials 0.000 claims description 2
- 229910052779 Neodymium Inorganic materials 0.000 claims description 2
- 229910001004 magnetic alloy Inorganic materials 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 8
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 8
- 229910052691 Erbium Inorganic materials 0.000 abstract description 3
- 229910052796 boron Inorganic materials 0.000 abstract description 3
- 229910052689 Holmium Inorganic materials 0.000 abstract description 2
- 229910052771 Terbium Inorganic materials 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 239000013078 crystal Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000010799 Cucumis sativus var sativus Nutrition 0.000 description 1
- 244000299906 Cucumis sativus var. sativus Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- JZQOJFLIJNRDHK-CMDGGOBGSA-N alpha-irone Chemical compound CC1CC=C(C)C(\C=C\C(C)=O)C1(C)C JZQOJFLIJNRDHK-CMDGGOBGSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 229910052726 zirconium Inorganic materials 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
- H01F1/0573—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 obtained by reduction or by hydrogen decrepitation or embrittlement
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
利用産業分野
この発明は、Ｆａ Ｂ−Ｒ系永久磁石の磁石特性、特
に、温度特性を改善し、残留磁束密度のすぐれたＦａ−
Ｂ−Ｒ系永久磁石合金に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Application The present invention improves the magnetic properties of Fa BR permanent magnets, especially the temperature characteristics, and improves the magnetic properties of Fa BR permanent magnets, and improves the magnetic properties of Fa BR permanent magnets.
This invention relates to a B-R permanent magnet alloy.
背景技術
現在、高磁気特性でかつ安価な永久磁石材料が求められ
、さらに資源的に豊富で、今後の安定供給が可能な組成
元素からなる永久磁石材料が切望されており、本出願人
は先に、高価なＳｍやらを含有しない新しい高性能永久
磁石としてＦａ−Ｂ−Ｒ系（ＲはＹを含む希土類元素の
うち少なくとも１種）永久磁石を提案した（特開昭５９
−４６００８号、特開昭５９−６４７３３号、特開昭５
９−８９４０１号、特開昭５９−１３２１０４号）。こ
の永久磁石は、Ｒとして陽や門を中心とする資源的に葭
富な軽希土類を用い、Ｆｅを主成分として２０ＭＧＯｅ
以上の極めて高いエネルギー積を示す、すぐれた永久磁
石である。Background Art Currently, there is a demand for permanent magnet materials with high magnetic properties and low cost, and there is also a strong desire for permanent magnet materials consisting of compositional elements that are rich in resources and can be stably supplied in the future. proposed an Fa-BR-based permanent magnet (R is at least one rare earth element including Y) as a new high-performance permanent magnet that does not contain expensive Sm (Japanese Unexamined Patent Application Publication No. 1983-1992).
-46008, JP-A-59-64733, JP-A-5
No. 9-89401, JP-A-59-132104). This permanent magnet uses resource-rich light rare earths such as yang and mon as R, and has Fe as its main component, producing 20MGOe.
This is an excellent permanent magnet that exhibits an extremely high energy product.
最近、磁気回路の高性能化、小形化に伴ない、Ｆｓ −
Ｂ −Ｒ系永久磁石材料が益々注目され、その用途の多
様化に伴なって、永久磁石の磁石特性の改善、特に、温
度特性の改善が要望されてきた。Recently, with the improvement in performance and miniaturization of magnetic circuits, Fs −
B-R type permanent magnet materials are attracting more and more attention, and with the diversification of their uses, there has been a demand for improvement in the magnetic properties of permanent magnets, particularly in temperature properties.
前記Ｆａ Ｂ Ｒ三元系永久磁石は、そのキューリ
一点が、１４０’Ｃ〜４００’Ｃで、特にＲがＭの場合
は３１２°Ｃであるため、そのＢｒの温度係数は、−０
，１５〜−０，１％／℃であり、使用条イ１によって、
磁石特性の低下が甚だしくなり、使用範囲を制限される
問題があった。The Fa BR ternary permanent magnet has a single Curie point of 140'C to 400'C, especially 312°C when R is M, so the temperature coefficient of Br is -0
,15~-0.1%/℃, and depending on the usage condition A1,
There was a problem that the magnetic properties deteriorated significantly and the range of use was restricted.
このＦｅ−Ｂ Ｒ系永久磁石において、Ｆｅの一部をＣ
ｏで置換し、キューリ一点を上昇させて該温度特性を改
善（特開昭５９−６４７３３号）することができるが、
多量の添加はコスト高を招来する問題がある。In this Fe-BR permanent magnet, part of Fe is C
o, the temperature characteristics can be improved by increasing the Curie temperature by one point (Japanese Unexamined Patent Publication No. 59-64733).
Addition of a large amount causes a problem of high cost.
発明の目的
この発明は、希土類・ボロン・鉄を主成分とする本出願
人提案の永久磁石材料において、使用用途拡大、使用温
度条件の改善のため、磁石特性、特に、温度特性を改善
したＦａ Ｂ Ｒ系永久磁石を目的としている。Purpose of the Invention The present invention aims to expand the range of uses and improve the temperature conditions for use of the permanent magnet material proposed by the applicant, which has rare earth elements, boron, and iron as its main components. Aimed at BR permanent magnets.
発明の構成と効果
発明者らは、Ｆｅ−Ｂ−Ｒ系永久磁石の磁石特性、特に
温度特性の改善を計ることができる微量元素の効果につ
いて種々検討した結果、Ｆｅ Ｂ Ｒ系永久磁石内
に、微ｍのＨａを含有させることにより、該磁石のキュ
ーリ一点を上昇させ、温度特性を改善し、かつ３ｒを向
上させることができることを知見した。Structure and Effects of the Invention The inventors have conducted various studies on the effects of trace elements that can improve the magnetic properties of Fe-B-R permanent magnets, especially the temperature characteristics. It has been found that by containing a minute amount of Ha, the Curie point of the magnet can be raised, the temperature characteristics can be improved, and the 3r can be improved.
すなわち、この発明は、
Ｒ（ＲはＮｄ、 Ｐｒ、 Ｄｙ、 Ｈｏ、 Ｔｂのうち
少なくとも１種あるいはさらに、Ｌａ、 Ｃｏ、 Ｓｍ
、 （ｆｆｌ、 Ｅｒ、 Ｅｕ、 Ｔｍ。That is, this invention provides R (R is at least one of Nd, Pr, Dy, Ho, Tb, or furthermore, La, Co, Sm
, (ffl, Er, Eu, Tm.
Ｙｂ、 Ｌｕ、 Ｙのうち少なくとも１種からなる）１
０原子％〜２４原子％、
Ｂ４原子％〜２４原子％、
Ｆｅ６５原子％〜８１原子％、
Ｈａ０．０５原子％〜０．３原子％を主成分とし、主相
が正方晶相からなることを特徴とする永久磁石合金であ
る。consisting of at least one of Yb, Lu, and Y)1
The main components are 0 atomic % to 24 atomic %, B4 atomic % to 24 atomic %, Fe 65 atomic % to 81 atomic %, Ha 0.05 atomic % to 0.3 atomic %, and the main phase is a tetragonal phase. It is a permanent magnet alloy with special characteristics.
また、この発明の永久磁石合金は、平均結晶粒径が１〜
８０．ｍの範囲にある正方品系の結晶構造を有する化合
物を主相とし、体積比で１％〜５０％の非磁性相（酸化
物相を除く）を含むことを特徴とする。Further, the permanent magnet alloy of the present invention has an average crystal grain size of 1 to 1.
80. It is characterized by having a main phase of a compound having a tetragonal crystal structure in the range of m, and containing a non-magnetic phase (excluding the oxide phase) of 1% to 50% by volume.
したがって、この発明は、Ｒとして陶あるいはさらに円
を中心とする資源的に豊富な軽希土類を主に用い、Ｆｅ
、Ｂ、 Ｒ，Ｈａを主成分とすることにより、２０Ｍ
ＧＯａ以上の極めて高いエネルギー積並びに、高残沼磁
束密度、高保磁力を有し、かつ温度による磁気特性の劣
化を防止したＦｅ−Ｂ−Ｒ系永久磁石材料を安価に得る
ことができる。Therefore, this invention mainly uses ceramic or even light rare earths, which are rich in resources, mainly yen, as R, and
, B, R, and Ha as the main components, 20M
It is possible to inexpensively obtain a Fe-BR permanent magnet material that has an extremely high energy product exceeding GOa, a high residual magnetic flux density, and a high coercive force, and prevents deterioration of magnetic properties due to temperature.
永久磁石の成分限定理由
この発明の永久磁石に用いる希土類元素Ｒは、組成の１
０原子％〜２４原子％を占めるが、ｍ、 Ｐｒ。Reason for limiting the composition of permanent magnet The rare earth element R used in the permanent magnet of this invention has a composition of 1
occupies 0 atomic % to 24 atomic %, m, Pr.
Ｄｙ、 Ｈｏ、 Ｔｂのうち少なくとも１種、あるいは
ざらに、Ｌｉ、 Ｃｏ、 Ｓｍ、 Ｃｄ、 Ｅｒ、 Ｅ
ｕ、丁ｍ、 Ｙｂ、 Ｌｕ、 Ｙのうち少なくとも１種
を含むものが好ましい。At least one of Dy, Ho, and Tb, or at least one of Li, Co, Sm, Cd, Er, and E
Preferably, it contains at least one of the following.
また、通常Ｒのうち１種（好ましくはｍ、 Ｐｒ。Also, usually one type of R (preferably m, Pr.
〜、 Ｈａ、 Ｔｂ等）をもって足りるが、実用上は２
種以上の混合物（ミツシュメタル、ジジム等〉を入手上
の便宜等の理由により用いることができる。~, Ha, Tb, etc.), but in practice 2
A mixture of more than one species (Mitushmetal, Didim, etc.) can be used for reasons such as availability.
また、主相を構成するＲ中のＳｍ、Ｌａはできるだ【ブ
少ないほうが好ましく、例えば、Ｓｍは、１原子％以下
、ざらに好ましくは０．５原子％以下である。Further, it is preferable that Sm and La in R constituting the main phase be as small as possible; for example, Sm is 1 atomic % or less, more preferably 0.5 atomic % or less.
また、温度特性の向上のためには、Ｒ混合系として、Ｎ
ｄ、Ｐｒ、または、これらに０．００５原子％〜５原子
％、好ましくは０．２原子％〜３原子％のＮ。In addition, in order to improve the temperature characteristics, N
d, Pr, or N in an amount of 0.005 atomic % to 5 atomic %, preferably 0.2 atomic % to 3 atomic %.
Ｈｏ、Ｔｂ等の組み合せが望ましい。A combination of Ho, Tb, etc. is desirable.
さらに、特性、コスト、資源的観点から、Ｒとしては、
ｍ、Ｐｒが、全Ｒの５０％以上、さらには８０％以上で
あることが好ましい。Furthermore, from the viewpoint of characteristics, cost, and resources, R:
It is preferable that m and Pr are at least 50%, more preferably at least 80%, of the total R.
なお、このＲは純希土類元素でなくてもよく、工業上入
手可能な範囲で製造上不可避な不純物を含有するもので
も差支えない。Note that this R does not have to be a pure rare earth element, and may contain impurities that are unavoidable in production within an industrially available range.
Ｒは、新規な上記系永久磁石材料における、必須元素で
あって、１０原子％未満では、結晶構造がα−鉄と同一
構造の立方晶組織が析出するため、高磁気特性、特に高
保磁力が得られず、２４原子％を越えると、Ｒリッチな
非磁性相が多くなり、残留磁束密度（Ｂｒ）が低下して
、すぐれた特性の永久磁石が得られない。よって、希土
類元素は、１０原子％〜２４原子％の範囲とする。R is an essential element in the new above-mentioned permanent magnet material, and if it is less than 10 atomic %, a cubic crystal structure with the same crystal structure as α-iron will precipitate, resulting in high magnetic properties, especially high coercive force. If the amount exceeds 24 atom %, the R-rich nonmagnetic phase increases, the residual magnetic flux density (Br) decreases, and a permanent magnet with excellent characteristics cannot be obtained. Therefore, the rare earth element is in the range of 10 atomic % to 24 atomic %.
Ｂは、この発明による永久磁石材料における、必須元素
であって、４原子％未満では、菱面体構造が主相となり
、高い保磁力（ｉｔ−１ｃ）は得られず、２４原子％を
越えると、Ｂリッチな非磁性相が多くなり、残留磁束密
度（Ｓｒ）が低下するため、すぐれた永久磁石が得られ
ない。よって、Ｂは、４原子％〜２４原子％の範囲とす
る。B is an essential element in the permanent magnet material according to the present invention, and if it is less than 4 at%, the rhombohedral structure becomes the main phase and high coercive force (it-1c) cannot be obtained, and if it exceeds 24 at%, B is an essential element. , B-rich nonmagnetic phase increases, and the residual magnetic flux density (Sr) decreases, making it impossible to obtain an excellent permanent magnet. Therefore, B is in the range of 4 atomic % to 24 atomic %.
Ｆｅは、新規な上記系永久磁石において、必須元素であ
り、６５原子％未満では残留磁束密度（Ｓｒ）が低下し
、８１原子％を越えると、高い保磁力が得られないので
、Ｆｅは６５原子％〜８１原子％の含有とする。Fe is an essential element in the new above-mentioned permanent magnet.If it is less than 65 at%, the residual magnetic flux density (Sr) decreases, and if it exceeds 81 at%, high coercive force cannot be obtained. The content is from atomic % to 81 atomic %.
Ｈ２は、この発明において、Ｆｅ Ｂ Ｒ系永久磁
石合金のキューリ一点を上昇させて温度特性を改善し、
残留磁束密度Ｂｒを増加させるため含有させるが、０．
０５原子％未満ではキューリ一点上昇効果が少なく、０
．３原子％を越えると、保磁力ｉＨＣが５ ｋｏｅ以下
に低下するほか、磁石合金が非常に酸化しやすくなり、
実用性がなくなり好ましくないため、０．０５原子％〜
０．３原子％に限定する。In this invention, H2 improves the temperature characteristics by increasing the Curie point of the FeBR permanent magnet alloy,
It is included to increase the residual magnetic flux density Br, but 0.
If it is less than 0.05 atomic%, the effect of raising cucumber by one point is small, and 0.
．． If it exceeds 3 atomic percent, the coercive force iHC decreases to 5 koe or less, and the magnet alloy becomes extremely susceptible to oxidation.
0.05 atomic% or more because it is not practical and undesirable.
Limited to 0.3 at.%.
また、この発明による永久磁石合金において、Ｆｅの一
部を６で置換することは、得られる磁石の磁気特性を損
うことなく、温度特性を改善することができるが、Ｇ置
換量がＦｅの２０％を越えると、逆に磁気特性が劣化す
るため、好ましくない。らの原子比率かＦｅとＣＯの合
計量で５％〜１５％の場合は、 （Ｂｒ）は置換しない
場合に比較して増加するため、高磁束密度を得るために
は好ましい。In addition, in the permanent magnet alloy according to the present invention, replacing a part of Fe with 6 can improve the temperature characteristics without impairing the magnetic properties of the resulting magnet, but the amount of G substitution is If it exceeds 20%, the magnetic properties will deteriorate, which is not preferable. If the atomic ratio of these or the total amount of Fe and CO is 5% to 15%, (Br) increases compared to the case where no substitution is made, which is preferable in order to obtain a high magnetic flux density.
また、この発明による永久磁石は、Ｒ，Ｂ、Ｆａ。Further, the permanent magnet according to the present invention includes R, B, and Fa.
Ｈ２の他、工業的生産上不可避的不純物の存在を許容で
きるが、Ｂの一部を４．０原子％以下のＣ１２，０原子
％以下のＰ、２．０原子％以下のＳ、 ２．０原子％
以下の髄のうち少なくとも１種、合計量で２．０原子％
以下で置換することにより、永久磁石の製造性改善、低
価格化が可能でおる。In addition to H2, the presence of unavoidable impurities in industrial production is acceptable, but a portion of B is C12 of 4.0 atom % or less, P of 0 atom % or less, S of 2.0 atom % or less, 2. 0 atomic%
At least one of the following marrow, total amount 2.0 atomic%
By substituting with the following, it is possible to improve the manufacturability and reduce the cost of permanent magnets.
また、下記添加元素のうち少なくとも１種は、ＲＢ
Ｆａ系永久磁石に対してその保磁力、減磁曲線の角型性
を改善あるいは製造性の改善、低価格化に効果があるた
め添加することができる。In addition, at least one of the following additional elements is RB
It can be added to Fa-based permanent magnets because it is effective in improving the coercive force and squareness of the demagnetization curve, improving manufacturability, and reducing costs.
５．０原子％以下のＡ１．３．０原子％以下の１１１５
．５原子％以下のＶ、４．５原子％以下のＣｒ。A1 of 5.0 atom% or less; 1115 of 3.0 atom% or less
．． 5 at% or less of V, 4.5 at% or less of Cr.
５．０原子％以下のＨｎ、５．０原子％以下の８１．９
．０原子％以下のＮｂ、７．０原子％以下の丁ａ、５．
２原子％以下のＮｏ、 ５．０原子％以下の４．１．
０原子％以下のｓｂ、３．５原子％以下のＧｅ、１．５
原子％以下のＳｎ、３．３原子％以下のＺｒ、６．０原
子％以下のＮｉ、 ５．０原子％以下の５１１１．１
原子％以下のＺｎ、３．３原子％以下のＨｆ、のうち少
なくとも１種を添加含有、但し、２種以上含有する場合
は、その最大含有量は当該添加元素のうち最大値を有す
るものの原子％以下の含有させることにより、永久磁石
の高保磁力化が可能になる。なお、添加量の上限は、磁
石の（Ｂｌｌ）ｍａＸを２０）４ＧＯｅ以上とするには
、（Ｂｒ）が少なくとも９ｋＧ以上必要となるため、該
条件を満す範囲とした。Hn of 5.0 atom% or less, 81.9 of 5.0 atom% or less
．． 0 atomic % or less Nb, 7.0 atomic % or less Dye a, 5.
No less than 2 atom %, 4.1 less than 5.0 atom %.
0 at% or less sb, 3.5 at% or less Ge, 1.5
Sn of atomic% or less, Zr of 3.3 atomic% or less, Ni of 6.0 atomic% or less, 5111.1 of 5.0 atomic% or less
At least one of Zn at % or less and Hf at 3.3 atomic% or less is added. However, if two or more are contained, the maximum content is the atom of the one with the maximum value among the added elements. % or less, it becomes possible to increase the coercive force of the permanent magnet. Note that the upper limit of the amount added was determined to be within a range that satisfies this condition, since (Br) is required to be at least 9 kG or more in order to make the (Bll) maX of the magnet 20)4 GOe or more.
結品相は主相が正方品であることが、微細で均一な合金
粉末より、すぐれた磁気特性を有する焼結永久磁石を作
製するのに不可欠である。In order to produce a sintered permanent magnet having superior magnetic properties than a fine and uniform alloy powder, it is essential that the main phase of the crystalline phase be a square one.
また、この発明の永久磁石は、磁場中プレス成型するこ
とにより磁気的異方性磁石が得られ、また、無磁界中で
プレス成型することにより、磁気的等方性磁石を１ワる
ことかできる。Furthermore, the permanent magnet of the present invention can be press-molded in a magnetic field to obtain a magnetically anisotropic magnet, and can be press-molded in a non-magnetic field to produce a magnetically isotropic magnet. can.
この発明による永久磁石は、保磁力ｉＨｃ≧１ｋＯｅ、
残留磁束密度Ｂｒ＞ ａ ｋＱ、を示し、最大エネルギ
ー積（Ｂｌｌ）ｍａｘは、２０ＭＧＯｅ以上を示し、好
ましい組成範囲では、最大値は２５８ＧＯｅ以上に達す
る。The permanent magnet according to the present invention has a coercive force iHc≧1kOe,
The residual magnetic flux density Br>a kQ is exhibited, and the maximum energy product (Bll) max is 20 MGOe or more, and in a preferred composition range, the maximum value reaches 258 GOe or more.
また、この発明永久磁石用合金粉末のＲの主成分がその
５０％以上を出及び円を主とする軽希土類金属が占める
場６合で、Ｒ１２原子％〜１５原子％、Ｂ６６原子〜９
原子％、Ｆａ ７８原子％〜８０原子％、の組成範囲
のとき、（ＢＨ）ｍａＸ ３５）ＩＧＯｅ以上のすぐれ
た磁気特性を示し、特に軽希土類金属が陶の場合には、
その最大値が４２ＭＧＯｓ以上に達する。In addition, in the case where the main component of R in the alloy powder for permanent magnets of this invention is light rare earth metals mainly consisting of 50% or more, R12 to 15 at% and B66 to 9
When the composition ranges from 78 atomic % to 80 atomic % Fa, it exhibits excellent magnetic properties of (BH) maX 35) IGOe or higher, especially when the light rare earth metal is ceramic
The maximum value reaches 42 MGOs or more.
実施例
実施例１
出発原料として、純度９９．９％の電解鉄、フェロボロ
ン合金、純度９９．７％以上のＮｄを使用し、これらを
配合後高周波溶解し、その後水冷銅鋳型に鋳造し、１４
Ｎｄ ８ Ｂ７８Ｆｅなる組成の鋳塊を得た。Examples Example 1 Electrolytic iron with a purity of 99.9%, ferroboron alloy, and Nd with a purity of 99.7% or more were used as starting materials, and after blending these, they were high-frequency melted, and then cast in a water-cooled copper mold.
An ingot having a composition of Nd 8 B78Fe was obtained.
その後このインゴットを、スタンプミルにより粗粉砕し
、次にボールミルにより微粉砕し、平均粒度３．０〃ｍ
の微粉末を１７だ。Thereafter, this ingot was coarsely ground using a stamp mill, and then finely ground using a ball mill to obtain an average particle size of 3.0 m.
The fine powder is 17.
この微粉末を金型に挿入し、１０ ｋｏｅの磁界中で配
向し、磁界に直交方向に、２ ｔ４の圧力で成形した。This fine powder was inserted into a mold, oriented in a magnetic field of 10 koe, and molded at a pressure of 2 t4 in a direction perpendicular to the magnetic field.
得られた成形体を、１１００’Ｃ，１時間、 Ａｒ雰囲
気中、の条件で焼結し、ざらに、Ａｒ雰囲気中で、８０
０’Ｃ，１時間と６３０’Ｃ，１時間の２段時効処理し
、その後、処理合金を、０．１ＴｏｒｒのＨ２雰囲気中
に、保持時間を種々変えて保持しするＨ２含有処理を施
した。The obtained molded body was sintered at 1100'C for 1 hour in an Ar atmosphere, and then roughly sintered at 80°C in an Ar atmosphere.
A two-stage aging treatment was performed at 0'C for 1 hour and at 630'C for 1 hour, and then an H2-containing treatment was performed in which the treated alloy was held in an H2 atmosphere at 0.1 Torr for various holding times. .
得られた永久磁石のＨ２含有量、キューリ一温度及び磁
石特性を測定し、その結果を第１表に示す。The H2 content, Curie temperature, and magnetic properties of the obtained permanent magnet were measured, and the results are shown in Table 1.
第１表より明らかな如く、Ｆａ Ｂ Ｒ系永久磁石
内に、微量のＨ２を含有させることにより、該磁石のキ
ューリ一点が上昇し、温度特性が改善され、かつ３ｒが
向上することが分る。As is clear from Table 1, by incorporating a small amount of H2 into the Fa BR permanent magnet, the Curie point of the magnet increases, the temperature characteristics are improved, and 3r is improved. .
以下余白 第１表Margin below Table 1
Claims (1)
とも１種あるいはさらに、Ｌａ、Ｃｅ、Ｓｍ、Ｇｄ、Ｅ
ｒ、Ｅｕ、Ｔｍ、Ｙｂ、Ｌｕ、Ｙのうち少なくとも１種
からなる）１０原子％〜２４原子％、 Ｂ４原子％〜２４原子％、 Ｆｅ ６５原子％〜８１原子％、 Ｈ＿２ ０．０５原子％〜０．３原子％を主成分とし、
主相が正方晶相からなることを特徴とする永久磁石合金
。[Claims] R (R is at least one of Nd, Pr, Dy, Ho, Tb, or furthermore, La, Ce, Sm, Gd, E
r, Eu, Tm, Yb, Lu, Y) 10 atom% to 24 atom%, B4 atom% to 24 atom%, Fe 65 atom% to 81 atom%, H_2 0.05 atom% The main component is ~0.3 atom%,
A permanent magnetic alloy characterized by a main phase consisting of a tetragonal phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61012668A JPH0633444B2 (en) | 1986-01-23 | 1986-01-23 | Permanent magnet alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61012668A JPH0633444B2 (en) | 1986-01-23 | 1986-01-23 | Permanent magnet alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62170455A true JPS62170455A (en) | 1987-07-27 |
| JPH0633444B2 JPH0633444B2 (en) | 1994-05-02 |
Family
ID=11811748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61012668A Expired - Lifetime JPH0633444B2 (en) | 1986-01-23 | 1986-01-23 | Permanent magnet alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633444B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995021452A1 (en) * | 1994-02-04 | 1995-08-10 | Ybm Technologies, Inc. | Rare earth element-metal-hydrogen-boron permanent magnet and method of production |
| US7141126B2 (en) | 2000-09-19 | 2006-11-28 | Neomax Co., Ltd. | Rare earth magnet and method for manufacturing the same |
| JP6359232B1 (en) * | 2017-12-05 | 2018-07-18 | 三菱電機株式会社 | Permanent magnet, method for manufacturing permanent magnet, and rotating machine |
-
1986
- 1986-01-23 JP JP61012668A patent/JPH0633444B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995021452A1 (en) * | 1994-02-04 | 1995-08-10 | Ybm Technologies, Inc. | Rare earth element-metal-hydrogen-boron permanent magnet and method of production |
| US5454998A (en) * | 1994-02-04 | 1995-10-03 | Ybm Technologies, Inc. | Method for producing permanent magnet |
| US5567891A (en) * | 1994-02-04 | 1996-10-22 | Ybm Technologies, Inc. | Rare earth element-metal-hydrogen-boron permanent magnet |
| US7141126B2 (en) | 2000-09-19 | 2006-11-28 | Neomax Co., Ltd. | Rare earth magnet and method for manufacturing the same |
| JP6359232B1 (en) * | 2017-12-05 | 2018-07-18 | 三菱電機株式会社 | Permanent magnet, method for manufacturing permanent magnet, and rotating machine |
| WO2019111328A1 (en) * | 2017-12-05 | 2019-06-13 | 三菱電機株式会社 | Permanent magnet, permanent magnet production method, and, rotary machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0633444B2 (en) | 1994-05-02 |
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