JP2507716B2 - Process for producing flaky amorphous alloy powder - Google Patents
Process for producing flaky amorphous alloy powderInfo
- Publication number
- JP2507716B2 JP2507716B2 JP61262134A JP26213486A JP2507716B2 JP 2507716 B2 JP2507716 B2 JP 2507716B2 JP 61262134 A JP61262134 A JP 61262134A JP 26213486 A JP26213486 A JP 26213486A JP 2507716 B2 JP2507716 B2 JP 2507716B2
- Authority
- JP
- Japan
- Prior art keywords
- amorphous alloy
- powder
- alloy powder
- crushing
- producing flaky
- 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.)
- Expired - Fee Related
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、フレーク状アモルファス合金粉末の製造方
法に関する。TECHNICAL FIELD The present invention relates to a method for producing flaky amorphous alloy powder.
〔従来の技術〕 アモルファス合金は、結晶磁気異方性がないことから
優れた軟磁性を持つこと、均一に乱れた原子構造の故に
特異な機械的、化学的性質を持つことが知られている。
従来は薄帯状で供せられていたが、近年では細線や粉末
などのアモルファス合金が得られ、その応用範囲を拡大
しつつある。[Prior Art] Amorphous alloys are known to have excellent soft magnetism due to the absence of crystalline magnetic anisotropy, and to have unique mechanical and chemical properties due to the uniformly disordered atomic structure. .
Conventionally, it was provided in the form of a ribbon, but in recent years, amorphous alloys such as fine wires and powders have been obtained, and its application range is expanding.
とりわけ、粉末をアモルファス合金は粉末成形による
バルク状アモルファス合金、複合材料などに展開される
可能性を秘めており、注目を浴びている。In particular, the amorphous powder is attracting attention because it has the possibility of being developed into a bulk amorphous alloy by powder molding, a composite material, and the like.
特に複合材料、例えばゴムやプラスチックスなどとの
複合材料に用いられるフィラーや、塗料などの顔料とし
て用いる場合は、粉末の形状としてフレーク状が好まし
い。In particular, when used as a filler used in a composite material such as a composite material with rubber or plastics or a pigment such as a paint, a flake shape is preferable as a powder shape.
あるいは、特開昭55−133507号に見られるように粉末
の成形体の磁性を向上させるためにフレーク状粉末を用
いる例も開示されている。Alternatively, as disclosed in JP-A-55-133507, an example of using flaky powder to improve the magnetism of a powder compact is also disclosed.
従来のフレーク状アモルファス合金粉末の製造方法は
2様に分類される。一つはスリット状のノズルより合金
溶湯を射出し、高速回転体上に固化して薄帯とし、これ
を機械的に粉砕する方法(例えば上記の特開昭55−1335
07号、特開昭58−197205号)であり、一つはオリフィス
状のノズルより合金溶湯を射出させるが、溶湯に対して
濡れ性の悪い回転固体に衝突させてキャビテーションを
起させるか(特開昭58−6907号)あるいは回転固体の形
状を制御(特開昭59−170208号、特開昭59−211504号)
することによって溶湯から直接フレーク状粉末を得るも
のである。Conventional methods for producing flaky amorphous alloy powder are classified into two types. One is a method of injecting a molten alloy from a slit-shaped nozzle, solidifying it on a high-speed rotating body to form a ribbon, and mechanically crushing this (for example, the above-mentioned JP-A-55-1335).
No. 07, JP-A-58-197205), one of which is to inject a molten alloy from an orifice-shaped nozzle. (Kaisho 58-6907) or controlling the shape of a rotating solid (Japanese Patent Laid-Open Nos. 59-170208 and 59-212150)
By doing so, flaky powder is directly obtained from the molten metal.
しかしながら、前者の薄帯を粉砕する方法は、薄帯製
造は比較的量産性があるものの、粉砕前の薄帯の切断の
工数が大きいこと、また粉砕前の材料が数mm角のオーダ
ーであるので粉砕工数が大きく、粉砕後の粒度も平均数
10μmどまりであった。後者の溶湯より直接フレーク状
粉末を得る方法は、ノズル径が10分の数mmφと小さく、
ノズルの寿命が短いため大容量化が不可能であった。However, although the former method for crushing thin strips is relatively mass-producible for producing thin strips, the number of man-hours for cutting the thin strips before crushing is large, and the material before crushing is on the order of several mm square. Therefore, the number of crushing steps is large, and the average particle size after crushing is also
It was only 10 μm. The latter method of directly obtaining flaky powder from the molten metal has a small nozzle diameter of a few tenths of mmφ,
Since the life of the nozzle was short, it was impossible to increase the capacity.
本発明の目的は、大容量化が容易で粉砕効率が良好で
あり、かつ粒度の小さいフレーク状アモルファス合金粉
末の製造方法を提供することにある。An object of the present invention is to provide a method for producing a flake amorphous alloy powder having a small particle size, which is easy to increase in capacity and has good pulverization efficiency.
本発明者は、上記従来方法によるフレーク状アモルフ
ァス合金粉末の製造方法の問題点を解決するために検討
を重ねた結果、水アトマイズ法によって得られた不規則
形状アモルファス合金粉末を機械的に粉砕することで大
容量化が容易で粉砕効率に優れ、かつ粒度の小さいフレ
ーク状アモルファス合金粉末が得られることを見い出
し、本発明をなすに至った。The present inventor has conducted extensive studies to solve the problems of the method for producing flaky amorphous alloy powder by the above-mentioned conventional method, and mechanically pulverizes the irregularly shaped amorphous alloy powder obtained by the water atomizing method. As a result, they have found that a flake-shaped amorphous alloy powder having a large capacity, excellent pulverization efficiency, and small particle size can be obtained, and the present invention has been completed.
本発明の第1段階として水アトマイズ法により、アモ
ルファス合金の不規則形状粉末を得る方法は、特公昭54
−76469号などにおいて公知である。特に、水の流量/
溶湯の流量の比を高くし、水流速度、水圧を高くとるこ
とで広い粒度範囲で種々のアモルファス合金粉末を得る
ことができる。As a first step of the present invention, a method for obtaining irregularly shaped powder of an amorphous alloy by a water atomizing method is disclosed in JP-B-54.
It is publicly known such as in -76469. Especially the flow rate of water /
Various amorphous alloy powders can be obtained in a wide particle size range by increasing the flow rate ratio of the molten metal and increasing the water flow velocity and water pressure.
本発明において使用する合金原料は、金属と半金属の
組合せになる合金、金属と金属例えば遷移金属同志、遷
移金属と希土類金属など広汎な範囲で可能である。特
に、遷移金属や貴金属に15〜30原子%のIV族ないしV族
の非金属元素を加えた合金などが代表的で、例えば(F
e,Co,Ni)と(P,B,C,Si,Ge)との合金や、これに種々の
遷移元素を添加した合金などが挙げられる。The alloy raw material used in the present invention can be in a wide range such as an alloy which is a combination of a metal and a semimetal, a metal and a metal such as a transition metal, a transition metal and a rare earth metal, and the like. In particular, a transition metal or a noble metal containing 15 to 30 atom% of a non-metal element of Group IV or Group V is typical, for example, (F
Examples include alloys of (e, Co, Ni) and (P, B, C, Si, Ge), and alloys in which various transition elements are added.
これらのアモルファス合金の溶湯は、噴霧媒体の水の
剪断力によって変形され、著しく界面の乱れた不規則な
形状のまま固化し、比表面積が高く実質的な肉厚も薄
い。したがって、容易に機械粉砕される。フレーク状粉
末とするには、強粉砕条件とするか、またはより好まし
くは粉砕助剤の共存下で粉砕する。粉砕設備としては例
えば、スタンプミル法、振動ミル法、アトライター法が
適用できる。なかでも投入エネルギーの最も高いアトラ
イターによる粉砕が最も効率が高く到達粒度も小さい。The melt of these amorphous alloys is deformed by the shearing force of the water of the atomizing medium, solidifies in an irregular shape with a significantly disturbed interface, has a high specific surface area, and has a substantially thin wall thickness. Therefore, it is easily mechanically ground. In order to obtain a flake-like powder, strong crushing conditions are used, or more preferably, crushing is performed in the presence of a grinding aid. As the crushing equipment, for example, a stamp mill method, a vibration mill method, and an attritor method can be applied. Among them, crushing with an attritor, which has the highest input energy, is the most efficient and has the smallest particle size.
本発明において用いられる粉砕助剤は、粉砕の進行と
ともに活性化された粉末粒子の表面に吸着して粒子の凝
集を抑制し、フレーク状の粉末の生成を促進する効果が
ある。効果的な固体助剤としては、ステアリン酸、オレ
イン酸、ラウリン酸、パルミチン酸等の高級脂肪酸、ス
テアリン酸亜鉛、ステアリン酸カルシウム、ラウリン酸
亜鉛、ラウリン酸アルミニウム等の金属石けん、ステア
リンアルコール等、高級脂肪族アルコール類、エタノー
ルアミン、ステアリルアミンなどの高級脂肪酸アミン、
およびポリエチレンワックスなどで、これらは単独ばか
りでなく2種以上加えてもよい。添加量は、通常0.1〜5
0重量%である。また液体の助剤には、アルコール、グ
リコール、エステル等の有機溶剤なども使用できる。The grinding aid used in the present invention has the effect of adsorbing on the surface of powder particles activated with the progress of grinding, suppressing the aggregation of the particles, and promoting the production of flaky powder. Effective solid auxiliaries include higher fatty acids such as stearic acid, oleic acid, lauric acid and palmitic acid, metallic soaps such as zinc stearate, calcium stearate, zinc laurate and aluminum laurate, stearic alcohol and higher fatty acids. Higher fatty acid amines such as group alcohols, ethanolamine, stearylamine,
Polyethylene wax and the like may be added alone or in combination of two or more. The addition amount is usually 0.1 to 5
It is 0% by weight. Further, as the liquid auxiliary agent, an organic solvent such as alcohol, glycol or ester can be used.
本発明は前述のように、水アトマイズ法によって得ら
れた不規則形状アモルファス合金粉末を機械的に粉砕す
ることで粒度の小さいフレーク状アモルファス合金粉末
を効率よく製造することが可能なことを見い出したもの
である。得られたフレーク状粉末は、ふるいを用いて分
級するが、350メッシュを通過することが好ましい。As described above, the present invention has found that it is possible to efficiently produce a flaky amorphous alloy powder having a small particle size by mechanically pulverizing the irregularly shaped amorphous alloy powder obtained by the water atomizing method. It is a thing. The obtained flaky powder is classified using a sieve, but it is preferably passed through 350 mesh.
このように微少なフレーク状であることで塗料等の顔
料、特に電磁波遮断用ペースト最適であり、分散性に優
れていること、配向性があることからプラスチックスや
ゴムとの複合材料、たとえば磁性プラスチックス、磁性
ゴムなどのフィラーに適している。その他複合材料用素
材、粉末冶金用素材として広範な用途に使用することが
できる。Such fine flakes are optimal for pigments such as paints, especially for electromagnetic wave shielding paste, and because of their excellent dispersibility and orientation, they are composite materials with plastics and rubber, such as magnetic materials. Suitable for fillers such as plastics and magnetic rubber. It can also be used in a wide range of applications as a material for composite materials and a material for powder metallurgy.
本発明をさらに実施例によって示す。 The invention is further illustrated by the examples.
実施例1 水アトマイズ法によって得られた平均粒度100μm、
見掛密度1.6g/cm3の不規則形状のFe75Si10B15アモルフ
ァス合金粉末をアトライターによって粉砕した。粉砕条
件は、SUJ2製ボールと水アトマイズ粉末の重量の比を10
対1とし、粉砕助剤としてエチルアルコールとステアリ
ン酸を各々粉末重量の1%ずつ添加した。毎分300回転
で3時間粉砕したところ、350メッシュ、93%パスの本
発明に係るフレーク状アモルファス合金粉末が得られ
た。Example 1 Average particle size 100 μm obtained by water atomizing method,
Irregularly shaped Fe 75 Si 10 B 15 amorphous alloy powder having an apparent density of 1.6 g / cm 3 was crushed by an attritor. The crushing condition is that the weight ratio of SUJ2 balls and water atomized powder is 10
As a crushing agent, ethyl alcohol and stearic acid were added as grinding aids in an amount of 1% of the powder weight. When pulverized at 300 rpm for 3 hours, a flake amorphous alloy powder according to the present invention having 350 mesh and 93% pass was obtained.
比較のために、単ロール法によって得られた厚さ約22
μmの同一成分のアモルファス合金薄帯を切断機にて約
2.5mm角に切断し、上記条件で3時間粉砕したところ、
フレーク状に粉砕は進行してはいたが、350メッシュを
通過したものは10%に過ぎなかった。引き続き粉砕を行
なったが、計24時間経過後の350メッシュ通過粉末は16
%であった。For comparison, the thickness obtained by the single roll method is about 22.
Amorphous alloy ribbon of the same component of μm is cut by a cutting machine.
When cut into 2.5 mm square and crushed for 3 hours under the above conditions,
Although crushing progressed into flakes, only 10% passed through 350 mesh. Grinding was continued, but the powder that passed through 350 mesh after 24 hours in total was 16
%Met.
実施例2 水アトマイズ法によって得られた平均粒度80μm、見
掛密度2.0g/cm3の不規則形状の(Co94Fe6)77.5Si10B
12.5アモルファス合金粉末をアトライターによって粉砕
した。粉砕条件は、SUJ2製ボールと水アトマイズ粉末の
重量の比を10対1とし、粉砕助剤としてオレイン酸を粉
末重量の2%添加した。毎分300回転で6時間粉砕した
ところ、350メッシュ、90%パスの本発明に係るフレー
ク状アモルファス合金粉末が得られた。Example 2 (Co 94 Fe 6 ) 77.5 Si 10 B with an irregular shape having an average particle size of 80 μm and an apparent density of 2.0 g / cm 3 obtained by a water atomizing method.
12.5 Amorphous alloy powder was ground with an attritor. The grinding conditions were such that the weight ratio of the SUJ2 balls and the water atomized powder was 10: 1, and oleic acid was added as a grinding aid at 2% of the powder weight. When pulverized at 300 revolutions per minute for 6 hours, a flake amorphous alloy powder according to the present invention having 350 mesh and 90% pass was obtained.
比較のために、単ロール法によって得られた厚さ約18
μmの同一成分のアモルファス合金薄帯を切断機にて約
2.5mm角に切断し、上記条件で6時間粉砕したところ、
フレーク状に粉砕は進行してはいたが、350メッシュを
通過したものは7%に過ぎなかった。引き続き粉砕を行
ったが、計48時間経過後の350メッシュ通過粉末は15%
であった。For comparison, the thickness obtained by the single roll method is about 18
Amorphous alloy ribbon of the same component of μm is cut by a cutting machine.
When cut into 2.5 mm square and crushed under the above conditions for 6 hours,
Although crushing progressed into flakes, only 7% passed through 350 mesh. Grinding was continued, but 15% of powder passed through 350 mesh after 48 hours in total.
Met.
実施例3 水アトマイズ法によって得られた平均粒度115μm、
見掛密度1.4/cm3の不規則形状のFe80P14C6アモルファス
合金粉末を振動ミルによって粉砕した。Example 3 Average particle size of 115 μm obtained by water atomization method,
Irregularly shaped Fe 80 P 14 C 6 amorphous alloy powder with an apparent density of 1.4 / cm 3 was pulverized by a vibration mill.
粉砕条件は、炭素鋼製ロッドと水アトマイズ粉末の重
量比を25対1とし、毎分1200回転で8mmの振幅により、
偏心回転させた。この合金は酸化し易いので容器内をAr
ガスで充満させたのみで、粉砕助剤は用いなかった。5
時間粉砕したところ、350メッシュ、71%パスの本発明
に係るフレーク状アモルファス合金粉末が得られた。The crushing conditions were as follows: the weight ratio of carbon steel rod and water atomized powder was 25: 1, and the amplitude was 8 mm at 1200 rpm,
It was eccentrically rotated. This alloy easily oxidizes, so Ar
Only gas filled, no grinding aid was used. 5
After pulverizing for a time, a flake amorphous alloy powder according to the present invention having 350 mesh and 71% pass was obtained.
比較のために単ロール法によって得られた厚さ約20μ
mの同一成分のアモルファス合金薄帯を切断機にて約2.
5mm角に切断し、上記条件で5時間粉砕したところ、350
メッシュを通過したものは6%に過ぎなかった。引き続
き粉砕したが、計40時間経過後の350メッシュ通過粉末
は8%であった。Thickness of about 20μ obtained by single roll method for comparison
Approximately 2.
When cut into 5 mm square and crushed under the above conditions for 5 hours, 350
Only 6% passed through the mesh. The powder was subsequently pulverized, but the powder passing through 350 mesh after 40 hours in total was 8%.
以上述べたごとく、本発明のフレーク状アモルファス
合金粉末の製造方法によれば、粒度の小さいフレーク状
粉末を効率よく製造することが可能であり、かつ大容量
化が容易な方法であり、その工業的価値が大である。As described above, according to the method for producing the flaky amorphous alloy powder of the present invention, it is possible to efficiently produce the flaky powder having a small particle size, and the method for increasing the capacity easily. Has great value.
Claims (3)
状アモルファス合金粉末を機械的に粉砕することを特徴
とするフレーク状アモルファス合金粉末の製造方法。1. A method for producing flaky amorphous alloy powder, which comprises mechanically pulverizing irregularly shaped amorphous alloy powder obtained by a water atomizing method.
特許請求の範囲第1項記載のフレーク状アモルファス合
金粉末の製造方法。2. The method for producing flaky amorphous alloy powder according to claim 1, wherein the mechanical pulverization is carried out in the coexistence of a pulverization aid.
範囲第2項記載のフレーク状アモルファス合金粉末の製
造方法。3. The method for producing flaky amorphous alloy powder according to claim 2, wherein the powder is pulverized using an attritor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61262134A JP2507716B2 (en) | 1986-11-04 | 1986-11-04 | Process for producing flaky amorphous alloy powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61262134A JP2507716B2 (en) | 1986-11-04 | 1986-11-04 | Process for producing flaky amorphous alloy powder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63114901A JPS63114901A (en) | 1988-05-19 |
JP2507716B2 true JP2507716B2 (en) | 1996-06-19 |
Family
ID=17371526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61262134A Expired - Fee Related JP2507716B2 (en) | 1986-11-04 | 1986-11-04 | Process for producing flaky amorphous alloy powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2507716B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2574174B2 (en) * | 1988-12-29 | 1997-01-22 | ティーディーケイ株式会社 | Amorphous alloy soft magnetic powder and magnetic shielding material |
JPH0372001A (en) * | 1989-08-09 | 1991-03-27 | Kobe Steel Ltd | Method for flatten-working iron powder for magnetism with vibrating ball mill |
CN107034407B (en) * | 2017-05-27 | 2018-07-13 | 遵义中铂硬质合金有限责任公司 | A kind of production method of hard alloy |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5476469A (en) * | 1977-11-30 | 1979-06-19 | Fukuda Metal Foil Powder | Production of amorphous alloy powder |
JPS58197205A (en) * | 1982-05-10 | 1983-11-16 | Asahi Chem Ind Co Ltd | Novel flaky metallic powder and its manufacture |
-
1986
- 1986-11-04 JP JP61262134A patent/JP2507716B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPS63114901A (en) | 1988-05-19 |
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