JPH08296006A - Alloy magnetic material with excellent coercive force and residual magnetization,its preparation and its use - Google Patents
Alloy magnetic material with excellent coercive force and residual magnetization,its preparation and its useInfo
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- JPH08296006A JPH08296006A JP29433495A JP29433495A JPH08296006A JP H08296006 A JPH08296006 A JP H08296006A JP 29433495 A JP29433495 A JP 29433495A JP 29433495 A JP29433495 A JP 29433495A JP H08296006 A JPH08296006 A JP H08296006A
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- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Continuous Casting (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、高い残留磁化(B
r=1.2T)を表わす希土類磁性材、その製造方法及
びその用途に関するものである。本明細書においてRE
(Rare Earth)は希土類元素を表わすものであり、C
e,Pr,Nd,Sm,Eu,Gd,Tb,Dy,A
o,Er,Tm,Yb,Lu,Yのうち1または2以上
の組合せを意味する。また、Mは高融点元素であるN
b,Mo,V,WまたはTaを表わすものであり、その
うち何れかの1または2以上の組合せを意味する。TECHNICAL FIELD The present invention relates to a high remanence (B
The present invention relates to a rare earth magnetic material having r = 1.2T), a method for producing the same, and its use. RE in this specification
(Rare Earth) represents a rare earth element, and C
e, Pr, Nd, Sm, Eu, Gd, Tb, Dy, A
It means one or a combination of two or more of o, Er, Tm, Yb, Lu and Y. Further, M is N which is a high melting point element.
It represents b, Mo, V, W, or Ta, and means any one or a combination of two or more of them.
【0002】[0002]
【従来の技術】高性能希土類磁性材の場合、希土類元素
含有量が高いため経済性及び化学的安定性が劣るのが問
題点として指摘されている。従って最近、RE含有量を
5at%以下に減少させたRE−Fe−B磁性材の開発
が活発に進められている。最近までに開発された低希土
類元素含有RE−Fe−B磁性材は、大韓民国公開特許
公報第94−700735号に開示されたとおり、準安
定磁性相であるFe3 B基地(matrix)に小量のRE2
F14Bを析出させた超微細結合合金であり、高い残留磁
化(Br=1.2T)を表わし、高エネルギー等方性永
久磁石,磁気記録媒体及び広帯域超高周波吸収への応用
の可能性を提示した。2. Description of the Related Art In the case of high performance rare earth magnetic materials, it has been pointed out that the economical efficiency and the chemical stability are poor due to the high content of rare earth elements. Therefore, recently, the development of the RE-Fe-B magnetic material with the RE content reduced to 5 at% or less has been actively promoted. The low rare earth element-containing RE-Fe-B magnetic material that has been developed up to now, as disclosed in Korean Laid-Open Patent Publication No. 94-700735, has a small amount in the Fe 3 B matrix (matrix) that is a metastable magnetic phase. RE 2
It is an ultrafine-bonded alloy in which F 14 B is precipitated and exhibits a high remanence (Br = 1.2T), and has the potential of application to high-energy isotropic permanent magnets, magnetic recording media, and broadband ultrahigh-frequency absorption. presentation.
【0003】[0003]
【発明が解決しようとする課題】しかし、この開発され
た合金も残留磁化の面で未だ充分でなく、一層の改善が
望まれていた。However, the developed alloy is still insufficient in terms of remanent magnetization, and further improvement has been desired.
【0004】[0004]
【課題を解決するための手段】本発明は低RE含有RE
−Fe−B合金磁性材に関するものであって、より詳し
くはα−Feまたはα−(Fe,Co)軟磁性基地相
(Matrix phase)に小量のRE2 Fe14BまたはRE2
(Fe,Co)14Bの軽磁性相を析出させたα−Fe基
RE−Fe−B超微細結晶粒合金磁性材、その製造方法
及びその利用に関するものである。DISCLOSURE OF THE INVENTION The present invention is a RE containing low RE
-Fe-B alloy magnetic material, more specifically, a small amount of RE 2 Fe 14 B or RE 2 in α-Fe or α- (Fe, Co) soft magnetic matrix phase.
The present invention relates to an α-Fe group RE-Fe-B ultrafine grain alloy magnetic material in which a light magnetic phase of (Fe, Co) 14 B is precipitated, a method for producing the same, and use thereof.
【0005】このような低REのRE−Fe−B合金が
高残留磁化を表わす原因は、軟磁性相と軽磁性相との間
の磁気的相互作用に起因するものと考えられる。かかる
合金からより高い残留磁化を得るための方案としては、
軟磁性相の磁化を増加させる必要がある。従って、本発
明者等はFe3 Bより磁化の大きいα−Feを主相とす
るRE−Fe−B超微細結晶性合金の発明を意図するよ
うになった。It is considered that the reason why such RE-Fe-B alloy having a low RE exhibits high remanence is due to magnetic interaction between the soft magnetic phase and the light magnetic phase. As a method for obtaining a higher residual magnetization from such an alloy,
It is necessary to increase the magnetization of the soft magnetic phase. Therefore, the present inventors have come to contemplate the invention of an RE-Fe-B ultrafine crystalline alloy containing α-Fe having a larger magnetization than Fe 3 B as a main phase.
【0006】本発明の目的は従来の低REのRE−Fe
−B磁石の基地相(Matrix phase)を変化させて磁気特
性を改善し、経済性を高めさせたα−Fe基RE−Fe
−B超微細結晶粒合金磁性材及びその製造方法を提供す
ることにある。The object of the present invention is to provide conventional low RE RE-Fe.
Α-Fe group RE-Fe with improved magnetic properties by changing the matrix phase of -B magnet
-B To provide an ultrafine crystal grain alloy magnetic material and a method for manufacturing the same.
【0007】本発明によるα−Fe基RE−Fe−B超
微細結晶粒合金磁性材は、体心立方格子構造を有する軟
磁性相を主相とし、正方晶構造を有する軽磁性相が小量
付加された合金で、REx Fey Coz Bu Mv Cuw
の組成を有する。ここにMは高融点元素であるNb,M
o,V,WまたはTaのうち1または2以上の元素であ
り、x=5at%以下,y=90at%以下,z=25
at%以下,u=15at%以下,v=5at%以下,
w=5at%以下を表わす。そして軟磁性相はα−Fe
またはその一部をCoに置換したα−(Fe,Co)で
あり、軽磁性相はRE2 Fe14BまたはRE2 (Fe,
Co)14Bであるのが好ましい。The α-Fe-based RE-Fe-B ultrafine grain alloy magnetic material according to the present invention has a soft magnetic phase having a body-centered cubic lattice structure as a main phase and a light magnetic phase having a tetragonal structure in a small amount. With the added alloy, RE x Fe y Co z B u M v Cu w
It has a composition of. Where M is a refractory element such as Nb or M
One or more elements of o, V, W or Ta, x = 5 at% or less, y = 90 at% or less, z = 25
at% or less, u = 15 at% or less, v = 5 at% or less,
Represents w = 5 at% or less. And the soft magnetic phase is α-Fe
Alternatively, it is α- (Fe, Co) in which a part thereof is replaced with Co, and the light magnetic phase is RE 2 Fe 14 B or RE 2 (Fe,
Co) 14 B is preferred.
【0008】本発明に係るα−Fe基RE−Fe−B超
微細結晶粒合金磁性材の製造法は、RE(希土類元
素),Fe,Co,B,M(高融点元素)及びCuを所
定の割合で含有する合金の溶湯から、非酸化性雰囲気下
に急速凝固法により非晶質合金を製造した後、500℃
〜800℃で熱処理するものである。これによりα−F
eまたはその一部をCoに置換したα−(Fe,Co)
の軟磁性基地相と、小量のRE2 Fe14BまたはRE2
(Fe,Co)14Bの軽磁性相を有する超微細結晶粒磁
性合金を得ることができる。以下、本発明の内容をより
詳しく記述する。In the method for producing an α-Fe-based RE-Fe-B ultrafine grain alloy magnetic material according to the present invention, RE (rare earth element), Fe, Co, B, M (high melting point element) and Cu are specified. At a temperature of 500 ° C. after the amorphous alloy is produced by the rapid solidification method in the non-oxidizing atmosphere from the molten alloy containing
The heat treatment is performed at ˜800 ° C. This makes α-F
α- (Fe, Co) in which e or a part thereof is replaced with Co
Soft magnetic matrix phase and a small amount of RE 2 Fe 14 B or RE 2
An ultrafine grain magnetic alloy having a light magnetic phase of (Fe, Co) 14 B can be obtained. Hereinafter, the content of the present invention will be described in more detail.
【0009】本発明を完成するに先立って、まずα−F
eの基地相にRE2 Fe14Bが析出可能なように、従来
の低RE含有RE−Fe−B合金組成におけるBの含有
量を20at%以下に減少させた組成のRE−Fe−B
合金を試作し、その溶湯から急速凝固法により非晶質相
に製造した後、これを熱処理して得た試料について相変
化及び磁気特性を調査した。Prior to completing the present invention, first, α-F
RE-Fe-B having a composition in which the B content in the conventional RE-Fe-B alloy composition having a low RE content is reduced to 20 at% or less so that RE 2 Fe 14 B can be precipitated in the matrix phase of e.
An alloy was experimentally produced, and an amorphous phase was produced from the molten metal by the rapid solidification method. Then, the sample was obtained by heat treatment, and the phase change and the magnetic property were investigated.
【0010】X線回析の結果、B含有量の高い場合は主
相はFe3 Bとなるが、B含有量の低い場合、主相はα
−Feとなり、RE2 Fe14Bが小量形成された合金組
織を呈する。しかし結晶粒が粗大であるためか磁気的特
性が低く、その改善が必要であった。As a result of X-ray diffraction, when the B content is high, the main phase becomes Fe 3 B, but when the B content is low, the main phase is α 3.
It becomes —Fe and exhibits an alloy structure in which a small amount of RE 2 Fe 14 B is formed. However, the magnetic characteristics were low, probably because the crystal grains were coarse, and the improvement was necessary.
【0011】このような結果を改善するために、Feに
対する固溶度が非常に低いので結晶化初期にα−Fe核
生成速度を増加させるものと判断されるCuを小量添加
し、結晶粒成長を抑制するものと判断される高融点元素
であるMo,Nb,V,W,Taを添加した低RE含有
RE−Fe−B−M−Cu(MはMo,Nb,V,Wま
たはTaのうち、いずれかの1または2以上をいう)合
金を設計し、急速凝固法(または機械的合金法)を利用
して非晶質相に改質した。In order to improve such results, a small amount of Cu, which is considered to increase the α-Fe nucleation rate at the initial stage of crystallization because the solid solubility in Fe is very low, is added to the crystal grains. Low RE RE-Fe-BM-Cu (M is Mo, Nb, V, W or Ta) added with Mo, Nb, V, W and Ta which are high melting point elements judged to suppress growth. Among them, any one or two or more of them was designed and modified into an amorphous phase by utilizing the rapid solidification method (or mechanical alloy method).
【0012】その結果RE−Fe−B−M−Cu合金の
磁気特性のうち保磁力(iHc)は向上したが、磁気履
歴曲線におけるヒステリシスループの角形比(Br/B
s)が低く残留磁化(Br)は向上しなかった。そこで
その改善を図るべく、結晶粒を更に微細化させて軟磁性
相の磁化を向上させるためにα−FeをCo/Fe=1
/4までCoで置換した低RE含有RE−(Fe,C
o)−B−M−Cu(M=Mo,Nb,V,W,Ta)
合金を設計し、その溶湯から急速凝固法,または機械的
合金法を利用して非酸化性雰囲気下で非晶質相に製造し
たあと、500〜800℃で熱処理して試料を製造し、
これの磁気特性調査及び相分析を体系的に行なった。As a result, although the coercive force (iHc) among the magnetic properties of the RE-Fe-BM-Cu alloy was improved, the squareness ratio (Br / B) of the hysteresis loop in the magnetic hysteresis curve was obtained.
s) was low and the residual magnetization (Br) was not improved. Therefore, in order to improve it, in order to further refine the crystal grains and improve the magnetization of the soft magnetic phase, α-Fe is added to Co / Fe = 1.
Low RE content RE- (Fe, C
o) -BM-Cu (M = Mo, Nb, V, W, Ta)
After designing an alloy and producing a non-oxidizing amorphous phase from the molten metal using a rapid solidification method or a mechanical alloying method, heat treating at 500 to 800 ° C. to produce a sample,
The magnetic property investigation and phase analysis of this were systematically performed.
【0013】これらの試料の合金の相を分析した結果、
α−(Fe,Co)基地相にRE2(Fe,Co)14B
が析出していることが確認され、また、Coの添加で保
磁力の減少なしに残留磁化が増加していることが確認さ
れた。即ち本発明の磁性合金は1.2T以上の高い残留
磁化と、0.65以上の高い角形比(Br/Bs)を有
している。As a result of analyzing the phases of the alloys of these samples,
RE 2 (Fe, Co) 14 B in α- (Fe, Co) base phase
Was confirmed to have been precipitated, and it was also confirmed that the addition of Co increased the remanent magnetization without decreasing the coercive force. That is, the magnetic alloy of the present invention has a high residual magnetization of 1.2 T or more and a high squareness ratio (Br / Bs) of 0.65 or more.
【0014】一方、ボロンの含有量を更に減少させると
残留磁化が上昇して最大磁気エネルギー積[(BH)m
ax]が大きく増加し、ボロン含有量6at%付近で既
存のFe3 B基のRE−Fe−B合金より優れた磁気特
性を表わす。On the other hand, when the content of boron is further reduced, the residual magnetization rises and the maximum magnetic energy product [(BH) m
ax] significantly increases, and exhibits magnetic properties superior to existing Fe 3 B-based RE-Fe-B alloys in the vicinity of a boron content of 6 at%.
【0015】本発明の合金磁性材は体心立方格子構造を
有する軟磁性相を主相とし、そこに正方晶構造を有する
小量の軽磁性相が生成されている。且つ、鋭意研究の結
果、REx Fey Coz Bu Mv Cuw (但しMはN
b,Mo,V,W,Taのうち1または2以上の高融点
元素)の成分組成においてx=5at%以下,y=90
at%以下,z=25at%以下,u=15at%以
下,v=5at%以下,W=5at%以下のものが好ま
しく、その組織は、軟磁性相はα−Feまたはα−(F
e,Co)、軽磁性相はRE2 Fe14BまたはRE
2 (Fe,Co)14Bのものが好ましいことが明らかに
なった。なお、本発明に係る合金は、これを蒸着または
スパッタリングすることにより、磁気記録媒体の製造に
利用可能である。以下に、本発明の具体的な比較例及び
実施例とその物性分析の結果を詳述する。The alloy magnetic material of the present invention has a soft magnetic phase having a body-centered cubic lattice structure as a main phase, and a small amount of a light magnetic phase having a tetragonal crystal structure is generated therein. In addition, as a result of earnest research, RE x Fe y Co z B u M v Cu w (where M is N
In the composition of one or more refractory elements of b, Mo, V, W, and Ta), x = 5 at% or less, y = 90
At% or less, z = 25 at% or less, u = 15 at% or less, v = 5 at% or less, W = 5 at% or less are preferable, and the soft magnetic phase thereof is α-Fe or α- (F
e, Co), the light magnetic phase is RE 2 Fe 14 B or RE
It has been clarified that the one having 2 (Fe, Co) 14 B is preferable. The alloy according to the present invention can be used for manufacturing a magnetic recording medium by vapor-depositing or sputtering the alloy. Hereinafter, specific comparative examples and examples of the present invention and the results of physical property analysis thereof will be described in detail.
【0016】[0016]
(比較例1) 希土類元素にNdを用い、α−Feの基
地相にNd2 Fe14Bが析出するよう、既存のNd−F
e−B合金組成におけるB含有量を19at%に減らし
たNd4 Fe77B19なる組成のNd−Fe−B合金を設
定し、その溶湯から非酸化性雰囲気下に単ロールによる
急速凝固法により非晶質合金を製造した後、600℃で
熱処理して比較例試料1を作成した。(Comparative Example 1) Nd-F was used so that Nd was used as a rare earth element and Nd 2 Fe 14 B was precipitated in the matrix phase of α-Fe.
A Nd-Fe-B alloy having a composition of Nd 4 Fe 77 B 19 in which the B content in the e-B alloy composition was reduced to 19 at% was set, and the molten metal was rapidly solidified by a single roll in a non-oxidizing atmosphere. After manufacturing the amorphous alloy, it was heat-treated at 600 ° C. to prepare Comparative Sample 1.
【0017】(比較例2) 比較例1におけるNd含有
量はそのまま、B含有量を10.5at%に低めてNd
4 Fe85.5B10.5の組成に変更し、その他は比較例1と
同様にして比較例試料2を作成した。(Comparative Example 2) The Nd content in Comparative Example 1 was maintained, and the B content was lowered to 10.5 at%.
Comparative Example Sample 2 was prepared in the same manner as Comparative Example 1 except that the composition was changed to 4 Fe 85.5 B 10.5 .
【0018】(比較例3〜5) 比較例1におけるNd
含有量はそのまま、B含有量を10at%とし、それに
Cuを1at%と、高融点元素であるMo,Nbまたは
Vをそれぞれ3at%ずつ添加した組成とし、製造条件
は比較例1と同一にして比較例試料3,試料4,試料5
を作成した。(Comparative Examples 3 to 5) Nd in Comparative Example 1
The content was kept as it was, the content of B was set to 10 at%, Cu was added to it at 1 at%, and Mo, Nb or V which is a high melting point element was added at 3 at%, respectively, and the production conditions were the same as those of Comparative Example 1. Comparative Example Sample 3, Sample 4, Sample 5
It was created.
【0019】(実施例1〜4) 比較例3におけるN
d,B,Mo及びCuの含有量はそのまま、Feの一部
をCoで、Co/Feがそれぞれ1/19.5(実施例
1)、1/9.25(実施例2)、1/5.83(実施
例3)及び1/4.13(実施例4)になるように置換
してNd4 (Fe,Co)82B10Mo3 Cu1 の組成と
し、製造条件は比較例1と同一にして実施例試料1〜試
料4を作成した。(Examples 1 to 4) N in Comparative Example 3
With the contents of d, B, Mo and Cu unchanged, part of Fe is Co and Co / Fe are 1 / 19.5 (Example 1), 1 / 9.25 (Example 2), 1 / The composition was Nd 4 (Fe, Co) 82 B 10 Mo 3 Cu 1 by substituting to 5.83 (Example 3) and 1 / 4.13 (Example 4), and the manufacturing conditions were Comparative Example 1. Example samples 1 to 4 were prepared in the same manner as described above.
【0020】(実施例5及び6) 高融点元素をMoか
らそれぞれNb及びVに代え、その他の成分組成及び製
造条件は実施例2と同様にして、実施例試料5及び試料
6を作成した。(Examples 5 and 6) Example samples 5 and 6 were prepared in the same manner as in example 2 except that the refractory element was replaced with Mo from Nb and V respectively.
【0021】(実施例7及び8) 実施例2における
B,Mo及びCuの含有量はそのままNd及びCoの含
有量を多少変化させ、製造条件は実施例2と同様にして
実施例試料7及び試料8を作成した。(Examples 7 and 8) The contents of B, Mo and Cu in Example 2 were changed to the contents of Nd and Co to some extent, and the production conditions were the same as those of Example 2 to obtain Samples 7 and 8. Sample 8 was prepared.
【0022】(実施例9〜11) 実施例5におけるN
b及びCuの含有量はそのままとしBの含有量を6at
%に低め、Nd及びCoの含有量を多少変化させ、製造
条件は実施例2と同様にして実施例試料9〜試料11を
作成した。(Examples 9 to 11) N in Example 5
The content of b and Cu is left unchanged, and the content of B is 6 at
%, The contents of Nd and Co were changed to some extent, and the manufacturing conditions were the same as those in Example 2 to prepare Samples 9 to 11 of Examples.
【0023】以上の比較例1〜5及び実施例1〜11に
係る各試料の成分組成と金属組織、それぞれの磁気特性
の試験結果を表1にまとめて示す。Table 1 shows the component compositions and metal structures of the samples according to the above-mentioned Comparative Examples 1 to 5 and Examples 1 to 11 and the test results of their magnetic properties.
【0024】比較例1及び2の結果として、X線回析分
析の結果、B含有量が高い比較例1の場合は、主相がF
e3 Bとなり磁気特性が改善されていない。Bの含有量
が低い比較例2の場合、主相がα−Feとなり、Nd2
Fe14Bが小量形成された微細構造を表わしてはいる
が、結晶粒が粗大であり磁気的特性(B2 =1.21
T,iHc=1.2KOe)が低かった。 比較例3〜
5では、保磁力(iHc)は2.1ないし2.7に向上
されたが、磁気履歴曲線の角形比が低いので残留磁化
(Br)の向上はなされなかった。As a result of Comparative Examples 1 and 2, as a result of X-ray diffraction analysis, in the case of Comparative Example 1 having a high B content, the main phase was F.
e 3 B, and the magnetic characteristics are not improved. In the case of Comparative Example 2 in which the content of B is low, the main phase is α-Fe and Nd 2
Although it represents a fine structure in which Fe 14 B is formed in a small amount, the crystal grains are coarse and the magnetic characteristics (B 2 = 1.21
T, iHc = 1.2 KOe) was low. Comparative Example 3
5, the coercive force (iHc) was improved to 2.1 to 2.7, but the remanence (Br) was not improved because the squareness ratio of the magnetic hysteresis curve was low.
【0025】実施例1〜4の結果、α−(Fe,Co)
基地相にNd2 (Fe,Co)14Bが析出した合金が得
られ、Coの添加で保磁力の減少なしに残留磁化が増加
する効果を得た。実施例5及び6の結果は、1.2以上
の高い残留磁化と、0.65以上の高い角形比(Br/
Bs)を有する磁性材を得ることができる。As a result of Examples 1 to 4, α- (Fe, Co)
An alloy in which Nd 2 (Fe, Co) 14 B was precipitated in the matrix phase was obtained, and the addition of Co had the effect of increasing the residual magnetization without decreasing the coercive force. The results of Examples 5 and 6 show that the high remanent magnetization of 1.2 or more and the high squareness ratio of 0.65 or more (Br /
A magnetic material having Bs) can be obtained.
【0026】実施例7及び8の結果、やはり残留磁化が
1.2以上であり角形比が0.65以上である良好な合
金磁性材が得られた。実施例9〜11においては残留磁
化が一層向上し、最大磁気エネルギー積[(BH)ma
x]が大きく増加する優れた磁気特性を表わす合金磁性
材が得られた。As a result of Examples 7 and 8, good alloy magnetic materials having a remanent magnetization of 1.2 or more and a squareness ratio of 0.65 or more were obtained. In Examples 9 to 11, the residual magnetization was further improved, and the maximum magnetic energy product [(BH) ma
An alloy magnetic material having excellent magnetic properties in which x] greatly increases was obtained.
【0027】次に表1のデータに基づき、磁性合金の成
分組成と磁気特性との関係をグラフ化して示す。Next, based on the data in Table 1, the relationship between the component composition of the magnetic alloy and the magnetic characteristics is shown in the form of a graph.
【0028】図1は希土類元素の含有量の影響を示し、
図2は比較例2を基準にB,Coの添加による影響を示
し、図3は同じく比較例2を基準に高融点元素(V)と
B,Coの添加による影響を示し、図4は同じく高融点
元素(Mo)とB,Coの添加による影響を示してい
る。FIG. 1 shows the influence of the content of rare earth elements,
2 shows the effect of adding B and Co based on Comparative Example 2, FIG. 3 shows the effect of adding refractory element (V) and B and Co based on Comparative Example 2, and FIG. The influence of the addition of the high melting point element (Mo) and B and Co is shown.
【0029】また、図5は他の成分の含有量が一定なと
きの、FeとCoとの構成比の変化による磁気特性への
影響を示し、図6は他の成分の含有量が一定なときの、
希土類元素(Nd)と(Fe0.9 Co0.1 )の構成比変
化による磁気特性への影響を示したものである。FIG. 5 shows the influence on the magnetic characteristics due to the change in the composition ratio of Fe and Co when the contents of other components are constant, and FIG. 6 shows that the contents of other components are constant. When
It shows the influence on the magnetic characteristics by the change in the composition ratio of the rare earth element (Nd) and (Fe 0.9 Co 0.1 ).
【0030】(実施例12〜15)実施例2の試料と成
分組成同一の合金(Nd=4at%,Fe=14at
%,Co=8at%,B=10at%,Mo=3at
%,Cu=1at%)について実施例2と同様にして急
速凝固法により非晶質化後、熱処理温度だけを620℃
から700℃まで変化させながら本発明の磁性合金を作
成し、その磁気特性値をグラフ化して図7に示した。Examples 12 to 15 Alloys having the same composition as the sample of Example 2 (Nd = 4 at%, Fe = 14 at)
%, Co = 8 at%, B = 10 at%, Mo = 3 at
%, Cu = 1 at%) in the same manner as in Example 2 after amorphization by the rapid solidification method, and then only the heat treatment temperature is 620 ° C.
To 700 ° C., the magnetic alloy of the present invention was prepared, and its magnetic characteristic values were graphed and shown in FIG. 7.
【0031】[0031]
【表1】 [Table 1]
【0032】[0032]
【発明の効果】上述の如く、本発明によるα−Fe基R
E−Fe−B超微細結晶粒磁性合金は既存のFe3 B基
低RE含有磁石に比べて磁気的特性及び熱的、化学的安
定性が改善された。且つ、Bの含有量減少に因り経済性
が改善された。As described above, the α-Fe group R according to the present invention is used.
E-Fe-B ultrafine crystal grains magnetic alloy magnetic properties and thermal and chemical stability is improved compared to existing Fe 3 B group low RE-containing magnets. In addition, the economy was improved due to the decrease in the B content.
【0033】なお本発明の磁性合金は等方性ボンド磁石
のみならずハードディスク、ディスケットまたはテープ
の如き高密度磁気記録媒体、発電機、モーター、及び広
帯域超高周波電波吸収体等に広範囲に利用できる非常に
有用な素材である。また、本発明の磁性合金は、ゴムま
たはプラスチック物質と混合して永久磁石を作り得るの
は当然のことである。The magnetic alloy of the present invention can be widely used not only for isotropic bonded magnets but also for high-density magnetic recording media such as hard disks, diskettes or tapes, generators, motors, and broadband ultra-high frequency electromagnetic wave absorbers. It is a useful material for. Also, the magnetic alloy of the present invention can of course be mixed with a rubber or plastic material to make a permanent magnet.
【0034】以上において、本発明は記載された具体例
についてのみ詳しく説明されたが、本発明の技術的思想
範囲内で多様な変形及び修正が可能であることは、当業
者において明らかなことであり、このような変形および
修正が記載された特許請求の範囲に属するのは当然なこ
とである。Although the present invention has been described in detail only with respect to the specific examples described above, it will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the technical idea of the present invention. Of course, such variations and modifications are, of course, within the scope of the appended claims.
【図1】磁性合金の成分組成(とくに希土類元素)と磁
気特性との関係を示すグラフである。FIG. 1 is a graph showing the relationship between the composition of a magnetic alloy (especially rare earth elements) and magnetic properties.
【図2】磁性合金の成分組成(とくにB及びCo)と磁
気特性との関係を示すグラフである。FIG. 2 is a graph showing the relationship between the composition of the magnetic alloy (particularly B and Co) and the magnetic properties.
【図3】磁性合金の成分組成(とくに高融点元素V)と
磁気特性との関係を示すグラフである。FIG. 3 is a graph showing the relationship between the composition of the magnetic alloy (particularly the high melting point element V) and the magnetic properties.
【図4】磁性合金の成分組成(とくに高融点元素Mo)
と磁気特性との関係を示すグラフである。FIG. 4 Component composition of magnetic alloy (especially high melting point element Mo)
6 is a graph showing the relationship between the magnetic properties and the magnetic properties.
【図5】磁性合金の成分組成(とくにFeとCoとの構
成比)と磁気特性との関係を示すグラフである。FIG. 5 is a graph showing the relationship between the composition of the magnetic alloy (particularly the composition ratio of Fe and Co) and the magnetic characteristics.
【図6】磁性合金の成分組成(とくに希土類元素とF
e,Coの構成比)と磁気特性との関係を示すグラフで
ある。FIG. 6 is a component composition of a magnetic alloy (especially rare earth element and F
3 is a graph showing the relationship between the magnetic properties and the composition ratio of e and Co).
【図7】本発明に係る磁性合金の、非晶質化後の熱処理
温度と磁気特性との関係を示すグラフである。FIG. 7 is a graph showing the relationship between the heat treatment temperature after amorphization and the magnetic characteristics of the magnetic alloy according to the present invention.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 金 澤 基 大韓民国大田広域市儒城区新城洞152ドゥ レアパートメント102棟1006号 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Motoi Kanazawa 152 Doure Apartment 102, No. 1006, 152, Shinseong-dong, Yuseong-gu, Daejeon, South Korea
Claims (9)
体心立方格子構造を有する軟磁性相を主相とし、正方晶
系の構造を有する軽磁性相が小量付加された組織の合金
で、REx Fey Coz Bu Mv Cuw の組成を有し、
上記においてRE(Rare Earth)は希土類元素Ce,P
r,Nd,Sm,Eu,Gd,Tb,Dy,Ao,E
r,Tm,Yb,Lu,Yのうち何れかの1または2以
上の組合せを表わし、Mは高融点元素であるNb,M
o,V,WまたはTaのうち何れかの1または2以上の
元素であり、x=5at%以下、y=90at%以下、
z=25at%以下、u=15at%以下、v=5at
%以下及びw=5ta%以下であることを特徴とする保
磁力及び残留磁化の優れた超微細結晶粒合金磁性材。1. A rare earth alloy magnetic material having a structure in which a soft magnetic phase having a cubic body-centered cubic lattice structure is a main phase and a small amount of a light magnetic phase having a tetragonal structure is added. , RE x Fe y Co z B u M v Cu w ,
In the above, RE (Rare Earth) is the rare earth element Ce, P
r, Nd, Sm, Eu, Gd, Tb, Dy, Ao, E
r, Tm, Yb, Lu, Y represents one or a combination of two or more, and M is a high melting point element Nb, M
one or more elements of any one of o, V, W or Ta, x = 5 at% or less, y = 90 at% or less,
z = 25 at% or less, u = 15 at% or less, v = 5 at
% And w = 5 ta% or less, an ultrafine grain alloy magnetic material excellent in coercive force and remanence.
部をCoに置換したα−(Fe,Co)であり、軽磁性
相が、RE2 Fe14BまたはRE2 (Fe,Co)14B
である、請求項1に記載の合金磁性材。2. The soft magnetic phase is α-Fe or α- (Fe, Co) in which a part of Fe is replaced by Co, and the light magnetic phase is RE 2 Fe 14 B or RE 2 (Fe, Co). ) 14 B
The alloy magnetic material according to claim 1, wherein
1/4以下である、請求項2に記載の合金磁性材。3. The substitution ratio of Fe and Co is Co / Fe =
The alloy magnetic material according to claim 2, which is 1/4 or less.
分組成(REは希土類元素Ce,Pr,Nd,Sm,E
u,Gd,Tb,Dy,Ao,Er,Tm,Yb,L
u,Yのうち何れかであり、Mは高融点元素Nb,M
o,V,WまたはTaのうち何れかである)の合金の溶
湯から、非酸化性雰囲気下に急速凝固法により非晶質合
金を製造後500〜800℃で熱処理することを特徴と
する、軟磁性相を主相とし正方晶系の構造を有する軽磁
性相が小量付加された組織を呈し、保磁力及び残留磁化
の優れた超微細結晶粒合金磁性材の製造方法4. A component composition of RE x Fe y Co z B u M v Cu w (RE is a rare earth element Ce, Pr, Nd, Sm, E.
u, Gd, Tb, Dy, Ao, Er, Tm, Yb, L
Either u or Y, M is a refractory element Nb, M
of any one of o, V, W or Ta), an amorphous alloy is manufactured by a rapid solidification method in a non-oxidizing atmosphere and then heat-treated at 500 to 800 ° C., Method for producing ultrafine grain alloy magnetic material having a soft magnetic phase as a main phase and a light magnetic phase having a tetragonal structure with a small amount of added structure and excellent coercive force and remanence
部をCoに置換したα−(Fe,Co)であり、軽磁性
相が、RE2 Fe14BまたはRE2 (Fe,Co)14B
であることを特徴とする請求項4に記載の合金磁性材の
製造方法5. The soft magnetic phase is α-Fe or α- (Fe, Co) in which a part of Fe is replaced with Co, and the light magnetic phase is RE 2 Fe 14 B or RE 2 (Fe, Co). 14 B
5. The method for producing an alloy magnetic material according to claim 4, wherein
1/4以下である、請求項5に記載の合金磁性材の製造
方法。6. The substitution ratio of Fe and Co is Co / Fe =
The method for producing an alloy magnetic material according to claim 5, which is ¼ or less.
はプラスチック物質とを混合して製造されることを特徴
とする永久磁石。7. A permanent magnet manufactured by mixing the alloy magnetic material according to claim 1 with a rubber or a plastic substance.
磁気記録媒体。8. A magnetic recording medium using the alloy magnetic material according to claim 1.
広帯域電波吸収体。9. A broadband electromagnetic wave absorber using the alloy magnetic material according to claim 1.
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KR19940029717 | 1994-11-12 |
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Cited By (2)
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---|---|---|---|---|
KR100763496B1 (en) * | 2006-05-02 | 2007-10-04 | 학교법인연세대학교 | Two-phase metallic glasses with multi-pass deformation properties |
CN103741008A (en) * | 2013-12-27 | 2014-04-23 | 青岛云路新能源科技有限公司 | Preparation method of iron-based nano-crystal alloy |
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TW503409B (en) * | 2000-05-29 | 2002-09-21 | Daido Steel Co Ltd | Isotropic powdery magnet material, process for preparing and resin-bonded magnet |
KR100521409B1 (en) * | 2005-05-30 | 2005-10-13 | 미리넷 주식회사 | Knitting machine, knitted fabric and socks there by |
CN103730227B (en) * | 2014-01-28 | 2016-04-27 | 成都银河磁体股份有限公司 | A kind of nano biphase isotropic composite permanent magnet and preparation method thereof |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01149940A (en) * | 1987-12-04 | 1989-06-13 | Hitachi Metals Ltd | Fe-base magnetic alloy |
-
1995
- 1995-11-08 KR KR1019950040235A patent/KR0168495B1/en not_active IP Right Cessation
- 1995-11-11 CN CN95118887A patent/CN1130288A/en active Pending
- 1995-11-13 JP JP29433495A patent/JP2894976B2/en not_active Expired - Fee Related
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01149940A (en) * | 1987-12-04 | 1989-06-13 | Hitachi Metals Ltd | Fe-base magnetic alloy |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100763496B1 (en) * | 2006-05-02 | 2007-10-04 | 학교법인연세대학교 | Two-phase metallic glasses with multi-pass deformation properties |
CN103741008A (en) * | 2013-12-27 | 2014-04-23 | 青岛云路新能源科技有限公司 | Preparation method of iron-based nano-crystal alloy |
CN103741008B (en) * | 2013-12-27 | 2016-05-11 | 青岛云路先进材料技术有限公司 | A kind of preparation method of iron-base nanometer crystal alloy |
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CN1130288A (en) | 1996-09-04 |
KR0168495B1 (en) | 1999-01-15 |
JP2894976B2 (en) | 1999-05-24 |
KR960019348A (en) | 1996-06-17 |
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