JP2929219B2 - Permanent magnet alloy - Google Patents
Permanent magnet alloyInfo
- Publication number
- JP2929219B2 JP2929219B2 JP2159638A JP15963890A JP2929219B2 JP 2929219 B2 JP2929219 B2 JP 2929219B2 JP 2159638 A JP2159638 A JP 2159638A JP 15963890 A JP15963890 A JP 15963890A JP 2929219 B2 JP2929219 B2 JP 2929219B2
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- magnet
- max
- alloy
- present
- 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.)
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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
- H01F1/058—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IVa elements, e.g. Gd2Fe14C
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- 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)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明はPr,Tiを添加した特定組成のR2Co17系（ＲはS
m,Prを必須成分とする希土類金属）の永久磁石に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an R 2 Co 17 system (R is S
m, Pr as essential components.
［従来の技術］ 従来,Sm2Co17系,Nd−Fe−Ｂ系永久磁石材料がスピー
カー，モーター等に使用されている。それぞれの材料の
磁石特性は,Sm2Co17系磁石では，残留磁束密度Brは約11
kG,保磁力IHCは約12kOe,最大エネルギー積（BH）maxが
約30MGOeであり,Nd−Fe−Ｂ系磁石ではBrは約13kG,IHC
は約10kOe（BH）maxが約40kOeである， このようにNd−Fe−Ｂ系永久磁石材料はSm2Co17系磁
石材料に比較して磁気特性に優れている上に,Sm,Coとい
った高価な材料を使用せず，安価なことから，近年急速
に生産量が拡大し,Sm2Co17系磁石材料のそれを凌ぎつつ
ある。[Prior Art] Conventionally, Sm 2 Co 17 type, Nd-Fe-B based permanent magnet material is used speaker, the motor or the like. The magnet properties of each material are as follows: For the Sm 2 Co 17 magnet, the residual magnetic flux density Br is about 11
kG, coercive force I H C is about 12 kOe, maximum energy product (BH) max is about 30 MGOe, and Br is about 13 kG, I H C for Nd-Fe-B magnets.
Is about 10 kOe (BH) max is about 40 kOe. Thus, Nd-Fe-B-based permanent magnet materials have better magnetic properties than Sm 2 Co 17- based magnet materials, and Sm, Co Since it does not use expensive materials and is inexpensive, its production has rapidly expanded in recent years, and it is surpassing that of Sm 2 Co 17- based magnet materials.
しかしながら、Nd−Fe−Ｂ系磁石材料は，前述の磁気
特性及びコストでは,Sm2Co17系磁石材料より優れるもの
の，耐熱性及び耐食性では,Sm2Co17系磁石材料と比較し
劣るという欠点をもっている。However, although the Nd-Fe-B magnet material is superior to the Sm 2 Co 17 magnet material in the magnetic properties and cost described above, it is inferior in heat resistance and corrosion resistance to the Sm 2 Co 17 magnet material. Have.
それ故,Sm2Co17系磁石の磁気特性の向上，コストの低
下を目的に，様々な組成あるいは製造方法で磁石の作製
が試みられ，その結果が現在まで多数報告されている。Therefore, for the purpose of improving the magnetic characteristics and reducing the cost of the Sm 2 Co 17- based magnet, the production of magnets with various compositions or manufacturing methods has been attempted, and many results have been reported to date.
第５図に示すJ.STRNAT,IEEE Trans,Magn,MAG−8,511
−515,（1972）にみられるように，ほとんどの希土類金
属は,R2Co17金属間化合物を形成し，特にPr2Co17,Nd2Co
17が優れた飽和磁化４πIsを示すことから,Sm2Co17系磁
石合金の１部をPr,あるいはNdで置換することによりSm2
Co17系磁石の残留磁束密度Brを向上せしめることが可能
であると考えられる。J. STRNAT, IEEE Trans, Magn, MAG-8,511 shown in Fig. 5
−515, (1972), most rare earth metals form R 2 Co 17 intermetallic compounds, especially Pr 2 Co 17 , Nd 2 Co.
Because they exhibit a 17 superior saturation magnetization 4πIs, Sm 2 by replacing a portion of Sm 2 Co 17 base magnet alloy Pr or in Nd,
It is considered that the residual magnetic flux density Br of the Co 17- based magnet can be improved.
しかし,Pr2Co17,Nd2Co17金属間化合物は，第６図に示
すA.E.RAY and K.J.STRNAT,IEEE Trans.Magn.MAG−8,51
6−518（1972）にみられるように，磁化容易方向がＣ面
内であることから,Sm2Co17系磁石のSmの一部をPr,Ndで
単純に置換しただけでは,4πIsの向上はみられるもの
の,Br,（BH）max,IHcの向上は難しいと推察される。However, Pr 2 Co 17 and Nd 2 Co 17 intermetallic compounds were obtained from AERAY and KJSTRNAT, IEEE Trans. Magn. MAG-8, 51 shown in FIG.
As shown in 6-518 (1972), since the direction of easy magnetization is in the C plane, simply replacing a part of Sm of the Sm 2 Co 17 magnet with Pr and Nd improves 4πIs. Although it is observed, it is presumed that it is difficult to improve Br, (BH) max and I Hc.
［発明が解決しようとする課題］ ところが，本発明者らは,Pr2Co17金属間化合物にTiを
添加することによりPr2Co17金属間化合物の磁化容易方
向がＣ面内から,C軸方向に変化することを発見している
（特願平２−87514号）。[Problems to be Solved] However, the present inventors have found that the easy magnetization direction C-plane of the Pr 2 Co 17 intermetallic compound by adding Ti to Pr 2 Co 17 intermetallic compounds, C axis It has been found that the direction changes (Japanese Patent Application No. 2-87514).
この事実から,Sm2Co17系磁石のSmの一部をPrで遷移金
属の一部をTiで置換することによりSm2Co17系磁石の磁
気特性を向上することが予見された。From this fact, it was foreseen that the magnetic properties of the Sm 2 Co 17- based magnet would be improved by substituting a part of Sm of the Sm 2 Co 17- based magnet with Pr and a part of the transition metal with Ti.
そこで，本発明の技術的課題は，上記問題点に鑑みSm
2Co17系磁石材料のSmの一部をPrで遷移金属の一部をTi
で置換することにより，従来のSm2Co17系磁石よりも磁
気特性に優れた永久磁石材料を提供することである。Therefore, the technical problem of the present invention is to solve the above-mentioned problems by using Sm
Part of Sm of 2 Co 17- based magnet material is made of Pr and part of transition metal is made of Ti
The purpose of the present invention is to provide a permanent magnet material having better magnetic properties than conventional Sm 2 Co 17 magnets.
［課題を解決するための手段］ 本発明によれば，化学式（R1-yPry）x1Cox2Fex3Cux4
（Zr1-zTiz）x5（ここで,RはSm又はSmと他のＹを含む希
土類元素（但し、Prは除く）,x1＝11〜13.5at％,x2＝25
〜85at％,x3＝１〜45at％,x4＝１〜8.5at％,x5＝0.5〜8
at％,y＝0.1〜0.8,z＝0.1〜0.8を表わす。）で表され,P
r,Tiを必須元素とすることを特徴とする永久磁石合金が
得られる。According to the present invention [SUMMARY OF], formula (R 1-y Pr y) x1 Co x2 Fe x3 Cu x4
(Zr 1 -z Ti z ) x5 (where R is Sm or a rare earth element containing Sm and other Y (excluding Pr), x1 = 11 to 13.5 at%, x2 = 25
~ 85at%, x3 = 1 ~ 45at%, x4 = 1 ~ 8.5at%, x5 = 0.5 ~ 8
at%, y = 0.1 to 0.8, z = 0.1 to 0.8. ), P
A permanent magnet alloy characterized by using r and Ti as essential elements is obtained.
即ち，本発明の永久磁石は,11at％以上13.5at％以下
のＲ（ＲはSm,Prを必須成分とする２種以上のＹを含む
希土類金属で,PrはＲに対し,10mol％以上80mol％以下置
換される）と25at％以上85at％以下のCoと,1at％以上45
at％以下のFeと,1at％以上8.5at％以下のCuと,0.5at％
以上8at％以下のＭ（Ｍは,Zr,Tiを必須成分とし,Mに対
し,Tiは,10mol％以上80mol以下である）を含有し，優れ
た磁石特性を有するものである。That is, the permanent magnet of the present invention is a rare earth metal containing at least 11 at% and not more than 13.5 at% (R is a rare earth metal containing at least two kinds of Y containing Sm and Pr as essential components. % Or less), 25 at% or more and 85 at% or less, and 1 at% or more and 45
At% or less Fe, 1at% or more and 8.5at% or less Cu, 0.5at%
It contains M of not less than 8 at% (M is Zr and Ti as essential components, and Ti is 10 mol% to 80 mol with respect to M) and has excellent magnet properties.
［実施例］ 次に，本発明の実施例について図面を参照して説明す
る。Example Next, an example of the present invention will be described with reference to the drawings.
［実施例１］ 合金組成が,Sm;5.7at％,Pr;5.5at％,Co;64.4at％,Fe;
17.3at％,Cu;4.9at％,Zr;2.2at％，また，同量比のSm,P
r,Co,Fe,Cuに加え,Ti;2.2at％となるように各原料を調
合し，融解することにより２種のインゴットを得た。得
られた各インゴットを母合金として，これを粗粉砕，混
合，微粉砕し，その粉末を磁場中で成形し，成形体を得
た。[Example 1] The alloy composition was as follows: Sm; 5.7 at%, Pr; 5.5 at%, Co; 64.4 at%, Fe;
17.3at%, Cu; 4.9at%, Zr; 2.2at%, Sm, P with the same ratio
In addition to r, Co, Fe, and Cu, each raw material was prepared so as to have a Ti of 2.2 at% and melted to obtain two kinds of ingots. Each of the obtained ingots was used as a mother alloy, which was roughly pulverized, mixed and finely pulverized, and the powder was molded in a magnetic field to obtain a compact.
これら成形体を真空中またはアルゴン中にて1180〜12
30℃の温度で１〜２時間焼結し，次いで,1150℃〜1200
℃の温度で溶体化処理を施した。These compacts are placed in vacuum or in argon for 1180 to 12
Sinter at a temperature of 30 ℃ for 1-2 hours, then 1150 ℃ ～ 1200
The solution treatment was performed at a temperature of ° C.
この後，アルゴン中にて,500〜900℃で２〜20時間時
効を行った。This was followed by aging in argon at 500-900 ° C for 2-20 hours.
このようにして磁気硬化せしめたSm5.7Pr5.5Co64.4Fe
17.3Cu4.9Zr2.2−ｚTiz（ｚ＝０〜2.2）の各組成の永久
磁石合金の残留磁束密度Br,保磁力IHC,最大エネルギー
積（BH）maxを測定した。Sm 5.7 Pr 5.5 Co 64.4 Fe magnetically cured in this way
The residual magnetic flux density Br, coercive force I H C , and maximum energy product (BH) max of the permanent magnet alloy having each composition of 17.3 Cu 4.9 Zr 2.2-z Tiz (z = 0 to 2.2 ) were measured.
その結果を第１図に示した。その結果，本発明に係わ
る永久磁石合金は,Pr添加に加えて，さらにTiを添加す
ることで，明らかにBr,（BH）max,IHCの磁気特性が向上
し，従来のSm2Co17系磁石より優れた磁気特性を有する
ことが認められた。The results are shown in FIG. As a result, the permanent magnet alloy according to the present invention, in addition to Pr addition, by further adding Ti, obviously Br, (BH) max, improves magnetic properties of the I H C, conventional Sm 2 Co It was found to have better magnetic properties than the 17 series magnet.
［実施例２］ 合金組成が,Sm2;11.2at％,Co;64.4at％,Fe;17.3at％,
Cu;4.9at％,Zr;1.4at％,Ti;0.8at％，また，同量比のC
o,Fe,Cu,Zr,Tiに加え,Pr;11.2at％となるように各原料
を調合し，融解することにより２種のインゴットを得
た。Example 2 The alloy composition was Sm 2 ; 11.2 at%, Co; 64.4 at%, Fe; 17.3 at%,
Cu; 4.9at%, Zr; 1.4at%, Ti; 0.8at%, and C in the same ratio
In addition to o, Fe, Cu, Zr, and Ti, each raw material was prepared so as to have a Pr of 11.2 at% and melted to obtain two kinds of ingots.
得られた各インゴットを母合金として，［実施例１］
と同様の方法で焼結時効し，磁気硬化せしめた。[Embodiment 1] Each of the obtained ingots was used as a master alloy.
Sinter aging and magnetic hardening were performed in the same manner as described above.
Sm11.2−ｙPryCo64.4Fe17.3Cu4.9Zr1.4Ti0.8（ｙ＝０
〜11.2）の各組成の永久磁石合金を得た。Sm 11.2-y Pr y Co 64.4 Fe 17.3 Cu 4.9 Zr 1.4 Ti 0.8 (y = 0
To 11.2) were obtained.
各組成の永久磁石合金のBr,IHC,（BH）maxを測定した
結果を第２図に示した。Br of the permanent magnet alloy of each composition, I H C, shown in Figure 2 the results of measurement of the (BH) max.
その結果，本発明の永久磁石では,Pr,Tiの複合添加が
Pr添加によるBr,（BH）maxの特性向上効果を誘起させ，
従来のSm2Co17型磁石より優れた磁気特性を発現せしめ
ることが確認された。As a result, in the permanent magnet of the present invention, the composite addition of Pr and Ti
The effect of improving the characteristics of Br and (BH) max by adding Pr is induced,
It was confirmed that magnetic properties superior to the conventional Sm 2 Co 17 type magnet were exhibited.
［実施例３］ 実施例１と同様の方法により（Sm0.5Pr0.5）x1Co
75.6−x1Fe17.3Cu4.9Zr1.4Ti0.8（x1＝10.8〜13.2）の
各組成の永久磁石合金を得た。Example 3 By the same method as in Example 1, (Sm 0.5 Pr 0.5 ) × 1 Co
75.6−x1 Fe 17.3 Cu 4.9 Zr 1.4 Ti 0.8 (x1 = 10.8 to 13.2) permanent magnet alloys of each composition were obtained.
各組成の永久磁石合金のBr,IHC,（BH）maxを測定した
結果を第３図に示した。Br of the permanent magnet alloy of each composition, I H C, as shown in FIG. 3 the results of measurement of the (BH) max.
第３図及び第２図（実施例２）から，本発明の永久磁
石合金はＲ及びPrの広い組成範囲で良好な磁気特性を示
し，歩留り等製造上有利な磁石材料であると言える。From FIG. 3 and FIG. 2 (Example 2), it can be said that the permanent magnet alloy of the present invention shows good magnetic properties in a wide composition range of R and Pr, and is an advantageous magnet material for production such as yield.
［実施例４］ 実施例１と同様の方法によりSm5.2Pr6.0Co66.6−x5Fe
17.3Cu4.9（Zr0.6Ti0.4）x5（x5＝0.5〜7.2）の各組成
の永久磁石合金を得た。Example 4 Sm 5.2 Pr 6.0 Co 66.6-x5 Fe was obtained in the same manner as in Example 1.
Permanent magnet alloys of each composition of 17.3 Cu 4.9 (Zr 0.6 Ti 0.4 ) x5 (x5 = 0.5 to 7.2) were obtained.
各組成の永久磁石合金のBr,IHC,（BH）maxを測定した
結果を第４図に示した。Br of the permanent magnet alloy of each composition, I H C, as shown in FIG. 4 the results of measurement of the (BH) max.
本発明の永久磁石合金は，第１図，第４図に示したよ
うに,Zr,Tiの広い組成範囲に対して優れた磁気特性を示
し，製造上有利な材料であると言える。As shown in FIGS. 1 and 4, the permanent magnet alloy of the present invention exhibits excellent magnetic properties over a wide composition range of Zr and Ti, and can be said to be a material advantageous in manufacturing.
［発明の効果］ 以上述べたように，本発明によれば，従来のSm2Co17
型磁石にPrとTiを複合添加することにより，従来より磁
石特性の優れた永久磁石材料を提供することができる。[Effects of the Invention] As described above, according to the present invention, the conventional Sm 2 Co 17
By adding Pr and Ti to the mold magnet in combination, it is possible to provide a permanent magnet material having better magnet properties than before.
第１図は本発明の実施例１に係わるBr,IHC及び（BH）
maxの値を示す図，第２図は実施例２に係わるBr,IHC及
び（BH）maxの値を示す図，第３図は本発明の実施例３
に係わるBr,IHC及び（BH）maxの値を示す図，第４図は
実施例４に係わるBr,IHC及び（BH）maxの値を示す図，
第５図RCo5,R2Co17の飽和磁化を示す図，第６図はR2（C
O1-xFex）17の磁化容易方向を示す図である。FIG. 1 shows Br, I H C and (BH) according to Example 1 of the present invention.
FIG. 2 is a diagram showing values of max , FIG. 2 is a diagram showing values of Br, I H C and (BH) max according to the second embodiment, and FIG. 3 is a third embodiment of the present invention.
Br, shows a value of I H C and (BH) max according to, Br Fig. 4 according to Example 4, shows the values of I H C and (BH) max,
Fig. 5 shows the saturation magnetization of RCo 5 and R 2 Co 17 , and Fig. 6 shows R 2 (C
FIG. 7 is a diagram showing an easy magnetization direction of O 1-x Fex) 17 .
───────────────────────────────────────────────────── フロントページの続き (72)発明者 遠藤 和光 宮城県仙台市太白区郡山６丁目７番１号 株式会社トーキン内 (56)参考文献 特開 平２−122503（ＪＰ，Ａ) 特開 昭59−118846（ＪＰ，Ａ) 特開 昭59−35648（ＪＰ，Ａ) 特開 昭56−112435（ＪＰ，Ａ) 特開 昭56−5944（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) C22C 19/07 E C22C 1/04 G H01F 1/04 A ──────────────────────────────────────────────────続 き Continued from the front page (72) Inventor Wako Endo 6-7-1, Koriyama, Taishiro-ku, Sendai City, Miyagi Prefecture Tokinnai Co., Ltd. (56) References JP-A-2-122503 (JP, A) JP-A Sho 59-118846 (JP, A) JP-A-59-35648 (JP, A) JP-A-56-112435 (JP, A) JP-A-56-5944 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) C22C 19/07 E C22C 1/04 G H01F 1/04 A
Claims (1)
Tiz）x5（ここで,RはSm又はSmと他のＹを含む希土類元
素（但し,Prは除く）,x1＝11〜13.5at％,x2＝25〜85at
％,x3＝１〜45at％,x4＝１〜8.5at％,x5＝0.5〜8at％,y
＝0.1〜0.8,z＝0.1〜0.8を表わす。）で表され,Pr,Tiを
必須元素とすることを特徴とする永久磁石合金。[Claim 1] Chemical formula (R 1-y Pr y ) x1 Co x2 Fe x3 Cu x4 (Zr 1-z
Ti z ) x5 (where R is Sm or a rare earth element containing Sm and other Y (excluding Pr), x1 = 11 to 13.5 at%, x2 = 25 to 85 at
%, X3 = 1 to 45 at%, x4 = 1 to 8.5 at%, x5 = 0.5 to 8 at%, y
= 0.1-0.8, z = 0.1-0.8. A permanent magnet alloy represented by), wherein Pr and Ti are essential elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2159638A JP2929219B2 (en) | 1990-06-20 | 1990-06-20 | Permanent magnet alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2159638A JP2929219B2 (en) | 1990-06-20 | 1990-06-20 | Permanent magnet alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0452244A JPH0452244A (en) | 1992-02-20 |
| JP2929219B2 true JP2929219B2 (en) | 1999-08-03 |
Family
ID=15698090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2159638A Expired - Fee Related JP2929219B2 (en) | 1990-06-20 | 1990-06-20 | Permanent magnet alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2929219B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113205955A (en) * | 2021-04-30 | 2021-08-03 | 太原科技大学 | Preparation method of high-performance sintered samarium-cobalt magnet |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5259351B2 (en) | 2008-11-19 | 2013-08-07 | 株式会社東芝 | Permanent magnet and permanent magnet motor and generator using the same |
-
1990
- 1990-06-20 JP JP2159638A patent/JP2929219B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113205955A (en) * | 2021-04-30 | 2021-08-03 | 太原科技大学 | Preparation method of high-performance sintered samarium-cobalt magnet |
| CN113205955B (en) * | 2021-04-30 | 2022-07-19 | 太原科技大学 | Preparation method of high-performance sintered samarium-cobalt magnet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0452244A (en) | 1992-02-20 |
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