JPS61287107A - Method for molding permanent magnet alloy powder - Google Patents
Method for molding permanent magnet alloy powderInfo
- Publication number
- JPS61287107A JPS61287107A JP60128752A JP12875285A JPS61287107A JP S61287107 A JPS61287107 A JP S61287107A JP 60128752 A JP60128752 A JP 60128752A JP 12875285 A JP12875285 A JP 12875285A JP S61287107 A JPS61287107 A JP S61287107A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- permanent magnet
- alloy powder
- less
- magnet alloy
- 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
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
- H01F1/0576—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 pressed, e.g. hot working
Abstract
Description
【発明の詳細な説明】
〔濫業上の利用分野〕
本発明は、几−Ｂ −Ｐａ系永久磁石合金の磁気特性を
改善する成形方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Commercial Use] The present invention relates to a molding method for improving the magnetic properties of a B-B-Pa permanent magnet alloy.
近年、従来の８ｍ −Ｃｏ系磁石に比較し、より高磁気
特性を有し、かつ資源的にも高価な８ｍやＣｏを含まな
いＮｄ−Ｂ−に’ｅ系永久磁石が発明ざｎた。（佐用ほ
か； Ｊ 、 Ａｐｐｌ 、 Ｐｋｙｓ 、５５（６）
１５Ｍａｒｃｈ １９８４． Ｐ２Ｏ８３〜２０８７
及び特開昭５９−４６００８号公報、同５９−２１５４
６０号公報、同５９−２１７３０４号公報、同５９−２
２２５６４号公報参照）
とくに、特開昭５９−２１５４６０および同５９−２１
７３０４号公報は、焼結、熱処理を還元または非酸化性
雰囲気中で行うことを開示している。In recent years, Nd-B-'e-based permanent magnets have been invented that have higher magnetic properties than conventional 8m-Co-based magnets and do not contain 8m or Co, which is expensive in terms of resources. (Sayo et al.; J, Appl, Pkys, 55(6)
15March 1984. P2O83~2087
and JP-A-59-46008, JP-A No. 59-2154.
No. 60, No. 59-217304, No. 59-2
22564) In particular, JP-A-59-215460 and JP-A-59-21
Publication No. 7304 discloses that sintering and heat treatment are performed in a reducing or non-oxidizing atmosphere.
しかしながら、成形時に８ける雰囲気については従来公
知の文献なども詳細に言及してないこと２よび一方では
、実際の量産時において、木材の磁気特性の変動が大き
いという問題があり、これまでに製造条件の技術的検討
を行ってきたが、十分な改善を見邑丁に至ってなかった
。However, there is a problem in that the atmosphere used during molding is not mentioned in detail in conventional literature. Although we have been conducting technical studies on the conditions, we have not been able to make sufficient improvements.
そこで本発明は上述した従来技術の問題点を解消し、優
れた磁気特性が得られる凡−Ｂ −Ｆｅ系永久磁石合金
粉の成形方法を提供することを目的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art described above and to provide a method for forming a B-B-Fe permanent magnet alloy powder that provides excellent magnetic properties.
本発明者らは、磁気特性が高い物ぢよび低い物を同時に
比較調査検討した結果、低い物は酸素含有量が多いこと
、その対策として大気中での成形を改めＡｒガスもしく
はＮ２ガスまたは両者の混合ガス雰囲気中で成形するこ
とにより酸素含有量を低減しその結果、磁気特性を改善
し得ることを見出し１本発明に至りたのである。すなわ
ち、本発明の永久磁石合金粉の成形方法は、必須元素と
してＲ（但し、凡はＹを含む希土類元素の内少くとも１
種）、Ｂおよび不可避の不純物を含むＦｅからなる合金
粉を成形すゑに尚り、Ａｒガス若しくはＮ２ガスまたは
両者の混合ガスの雰囲気中で成形することを特徴とする
ものである。The inventors of the present invention conducted a simultaneous comparative study of products with high and low magnetic properties, and found that products with low magnetic properties had a high oxygen content.As a countermeasure, we changed the molding process in the atmosphere and used Ar gas, N2 gas, or both. They discovered that by molding in a mixed gas atmosphere, the oxygen content could be reduced and, as a result, the magnetic properties could be improved, leading to the present invention. That is, the method for forming the permanent magnet alloy powder of the present invention uses R as an essential element (however, in general, at least one of the rare earth elements including Y) is used.
This method is characterized in that an alloy powder made of Fe containing B, B, and unavoidable impurities is molded in an atmosphere of Ar gas, N2 gas, or a mixed gas of both.
また本発明を適用し得るＲ−Ｂ−Ｆｅ系永久磁石合金の
成分範囲は下記である。Further, the component range of the R-B-Fe permanent magnet alloy to which the present invention can be applied is as follows.
すなわち１厘子百分比で４０〜９０％のｐｅ、 ２〜２
８第のＢ、８〜３０％のＲ，（Ｙを含む希土類金Ｊｌｌ
）を必須成分とし、かつ下記所定チ以下の人元素の１種
以上（但し、２種以上含む場合の人元素の含量は当該含
有Ａ元素のうち最大値を有するものの値以下）を含有し
た永久磁石合金である。i.e. 40-90% pe, 2-2
Rare earth gold containing 8th B, 8-30% R, (Y
) as an essential component, and one or more of the following human elements below the specified number (however, if two or more types are included, the content of the human element is below the value of the one with the maximum value among the contained elements A). It is a magnetic alloy.
Ｔ１４．５％以下 Ｎｉ ８％以下 Ｃ０５０チ
以下Ｂｉ ５ ％以下Ｖ ９．５％以下Ｎｂ １２
．５１以下Ｔａ１Ｏ，５％以下 Ｃｒ ８．５ Ｓ以
下 Ｍｏ ９．５Ｓ以下Ｗ９．５％以下 ＭＮ
８ Ｓ以下 ＡＪ ９，５％以下８ｂ２．５％以下
Ｇｅ ７ ｌｂ以下 Ｓｎ ３．５％以下Ｚｒ
５．５％以下 Ｈｆ ５．５１以下 Ｃｕ ３．５
％以下８２．０％以下 Ｃ’ ４ １以下Ｃａ ８
Ｓ以下Ｍｇ８％以下 ８ｉ ８ Ｓ以下０ １
１以下Ｐ ３．５チ以下
上記、永久磁石合金の組成内では、従来のハード・フェ
ライト磁石の磁気特性（Ｂ Ｈ） ＭＡＸ ４ Ｍ Ｇ
Ｏｅ以上の特性が得られる。T14.5% or less Ni 8% or less C050 or less Bi 5% or less V 9.5% or less Nb 12
．． 51 or less Ta1O, 5% or less Cr 8.5 S or less Mo 9.5S or less W9.5% or less MN
8 S or less AJ 9.5% or less 8b 2.5% or less Ge 7 lb or less Sn 3.5% or less Zr
5.5% or less Hf 5.51 or less Cu 3.5
% or less 82.0% or less C' 4 1 or less Ca 8
S or less Mg8% or less 8i 8 S or less 0 1
1 or less P 3.5 inches or less Within the above permanent magnet alloy composition, the magnetic properties of conventional hard ferrite magnets (B H) MAX 4 M G
Characteristics of Oe or higher can be obtained.
次に本発明の実施例について説明するが１本発明はこれ
ら実施例に限定されるものではない。Next, examples of the present invention will be described, but the present invention is not limited to these examples.
実施例１
原料として純度９９．９ｗｔ％の電解鉄、９９．０ｗｔ
％のＢおよびＲとして純度９９．７ｗｔ％以上のＮｄを
使用して原子−の組成で１４．５ ％Ｎｄ −７，２％
Ｂ−残Ｆｅ （１） 最Ｈ焼結体を得る様に秤量して不
活性（Ａｒ）ガス中で溶解し合金インゴットを得た。合
金インゴットなジ謬−クラッシャー、ブラウン・ミルお
よびジェット・ミルを使用し、平均粒径３．３μｍの成
形用原料として成形圧２．８ｔ／ｃｄで磁場（１５ＫＯ
ｅ ）中で成形し成形体を得た。ただし１本実施例では
成形作業を常圧のＡｒガス（純度９９．９９８ ’４
、酸素量２ ｐｐｍ。Example 1 Electrolytic iron with a purity of 99.9wt% as a raw material, 99.0wt
Using Nd with a purity of 99.7 wt% or more as % B and R, the composition of atoms is 14.5% Nd - 7.2%
B-Remaining Fe (1) It was weighed to obtain the highest sintered body and melted in an inert (Ar) gas to obtain an alloy ingot. Using an alloy ingot crusher, brown mill, and jet mill, a magnetic field (15 KO
e) to obtain a molded product. However, in this example, the molding operation was performed using Ar gas (purity 99.998'4) under normal pressure.
, oxygen amount 2 ppm.
窒素量１０ｐｐｍ ）雰囲気中で実施した。The test was carried out in an atmosphere with a nitrogen content of 10 ppm.
得られた成形体を真空（１０−’Ｔｏｒｒ）中で焼結（
１０９０℃Ｘ２Ｈｒ）を行い室温まで１℃／分の冷却速
度で冷却した。The obtained molded body was sintered (
1090°C x 2 hours) and cooled to room temperature at a cooling rate of 1°C/min.
冷却後、再度加熱し、６８０℃Ｘ ２Ｈｒの時効処理を
Ａｒガス雰囲気中で行い、常温に急冷後所定寸法（１０
１０Ｘ１０Ｘ１０に加工後、磁気特性の測定に供した。After cooling, it is heated again and subjected to aging treatment at 680°C for 2 hours in an Ar gas atmosphere. After being rapidly cooled to room temperature, it is
After processing into a size of 10x10x10, it was subjected to measurement of magnetic properties.
結果を第１表に、実施例１として表示した。The results are shown in Table 1 as Example 1.
実施例２〜６
成形時の雰囲気を第１表の如（変更した以外は実施例１
と同様に行った。ただし、使用したＡｒガスは実施例１
と同じものでＮ２ガスは純度９９．９９９ ％酸素量５
ｐｐｍの市販品を使用した。結果を第１表に示す。Examples 2 to 6 The atmosphere during molding was as shown in Table 1 (Example 1 except for the changes)
I did the same thing. However, the Ar gas used was Example 1.
The same as N2 gas, purity 99.999% oxygen content 5
A commercially available product containing ppm was used. The results are shown in Table 1.
以下余白
第１表 （％は容積比を示す）
比較例１
成形時の雰囲気を通常の大気とした以外は、実施例１と
同様である。第１表に示す通り、ＡｒガスまたはＮ２ガ
ス雰囲気中の成形では、最大エネルギー積（ＢＨ） Ｍ
ＡＸ −３８，４〜４０．５ＭＧＯｅが得られるものの
１通常の大気中では３２．２ＭＧＯｅと低下することが
分る。Margin Table 1 below (% indicates volume ratio)
Comparative Example 1 The same as Example 1 except that the atmosphere during molding was normal air. As shown in Table 1, when forming in an Ar gas or N2 gas atmosphere, the maximum energy product (BH) M
Although AX-38,4 to 40.5 MGOe can be obtained, it is found that the value decreases to 32.2 MGOe in normal atmosphere.
Claims (1)
の内少くとも１種）、Ｂおよび不可避の不純物を含むＦ
ｅからなる合金粉をＡｒガス若しくはＮ＿２ガスまたは
両者の混合ガス雰囲気中で成形することを特徴とする永
久磁石合金粉の成形方法。1. R as an essential element (however, R is at least one kind of rare earth elements including Y), B and F containing unavoidable impurities
A method for forming permanent magnet alloy powder, which comprises forming alloy powder consisting of E in an atmosphere of Ar gas, N_2 gas, or a mixture of both.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60128752A JPS61287107A (en) | 1985-06-13 | 1985-06-13 | Method for molding permanent magnet alloy powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60128752A JPS61287107A (en) | 1985-06-13 | 1985-06-13 | Method for molding permanent magnet alloy powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61287107A true JPS61287107A (en) | 1986-12-17 |
Family
ID=14992585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60128752A Pending JPS61287107A (en) | 1985-06-13 | 1985-06-13 | Method for molding permanent magnet alloy powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61287107A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013197240A (en) * | 2012-03-19 | 2013-09-30 | Jx Nippon Mining & Metals Corp | Neodymium-iron-boron-based rare earth sintered magnet, and method of manufacturing the same |
| JP2013197241A (en) * | 2012-03-19 | 2013-09-30 | Jx Nippon Mining & Metals Corp | Neodymium-based rare earth sintered magnet and method of manufacturing the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59215460A (en) * | 1983-05-21 | 1984-12-05 | Sumitomo Special Metals Co Ltd | Permanent magnet material and its production |
-
1985
- 1985-06-13 JP JP60128752A patent/JPS61287107A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59215460A (en) * | 1983-05-21 | 1984-12-05 | Sumitomo Special Metals Co Ltd | Permanent magnet material and its production |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013197240A (en) * | 2012-03-19 | 2013-09-30 | Jx Nippon Mining & Metals Corp | Neodymium-iron-boron-based rare earth sintered magnet, and method of manufacturing the same |
| JP2013197241A (en) * | 2012-03-19 | 2013-09-30 | Jx Nippon Mining & Metals Corp | Neodymium-based rare earth sintered magnet and method of manufacturing the same |
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