JP2779121B2 - Composite rotating electrode for manufacturing intermetallic compound powder - Google Patents
Composite rotating electrode for manufacturing intermetallic compound powderInfo
- Publication number
- JP2779121B2 JP2779121B2 JP24199493A JP24199493A JP2779121B2 JP 2779121 B2 JP2779121 B2 JP 2779121B2 JP 24199493 A JP24199493 A JP 24199493A JP 24199493 A JP24199493 A JP 24199493A JP 2779121 B2 JP2779121 B2 JP 2779121B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- intermetallic compound
- pure
- electrode
- composite
- 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 - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は回転電極法による粉末材
料、特に機能性粉末材料の製造に使用する複合回転電極
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite rotary electrode used for producing powder materials, particularly functional powder materials, by a rotary electrode method.
【０００２】[0002]
【従来の技術】高機能性材料の粉末製造方法は、水アト
マイズ法、ガスアトマイズ法および回転電極法などがあ
る。特に純度の高い球状粉末あるいは融点の高い合金の
球状粉末の製造においては、回転電極法が有効な製造方
法であり、Ｔｉ合金やＷ合金の高融点合金の球状粉末製
造に工業的な方法として用いられてきた。この回転電極
法においては目的組成の棒状インゴットが消耗電極とし
て供されていた。しかし、希土類−遷移金属系あるいは
遷移金属−遷移金属系のラーベス相、ミッシュメタル−
遷移金属系水素吸蔵合金をはじめ、その他硬くて脆い金
属間化合物のような材料においては棒状インゴットの作
製が難しく、たとえ棒状インゴットに作製できたとして
も、粉末を製造するために必要な高速回転に耐える強度
の一体型電極に作製するのは困難であった。2. Description of the Related Art Methods for producing powders of highly functional materials include a water atomizing method, a gas atomizing method, and a rotating electrode method. Particularly in the production of spherical powder of high purity or alloy of high melting point, the rotating electrode method is an effective production method, and is used as an industrial method for producing spherical powder of high melting point alloy such as Ti alloy and W alloy. I have been. In this rotating electrode method, a rod-shaped ingot of the intended composition was used as a consumable electrode. However, rare earth-transition metal or transition metal-transition metal Laves phase, misch metal-
For materials such as transition metal hydrogen storage alloys and other hard and brittle intermetallic compounds, it is difficult to produce rod-shaped ingots. It has been difficult to produce an integrated electrode having the strength to withstand.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上記のとお
り従来困難であった回転電極の製造上の問題を解決し、
従来の方法では製造できなかった硬くて脆い金属間化合
物材料の回転電極を提供し、かつ、従来のものより高速
回転に耐え得る回転電極を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention solves the above-described problem of manufacturing a rotating electrode, which was conventionally difficult,
An object of the present invention is to provide a rotating electrode made of a hard and brittle intermetallic compound material that cannot be manufactured by a conventional method, and to provide a rotating electrode that can withstand higher-speed rotation than a conventional one.
【０００４】[0004]
【課題を解決するための手段】金属間化合物粉末製造用
複合回転電極は円柱と該円柱に内面を密接する円筒とか
ら構成し、該円柱および該円筒は金属間化合物を構成す
る元素である純金属又はそれらの合金からなるものと
し、かつ全体として各元素の原子％が該金属間化合物の
構成比とほぼ一致するものとする。SUMMARY OF THE INVENTION A composite rotary electrode for producing an intermetallic compound powder comprises a cylinder and a cylinder whose inner surface is in close contact with the cylinder, and the cylinder and the cylinder are pure metals which are elements constituting an intermetallic compound. It is made of a metal or an alloy thereof, and the atomic% of each element as a whole substantially matches the composition ratio of the intermetallic compound.
【０００５】さらに、円柱はその中心線から放射状に縦
に分割した形の複数個の分割片を密接させて形成した円
柱であり、該分割片は、図１に示すように粉末材料であ
る金属間化合物を構成する当該単体元素の純金属を鋳造
法などにより溶製した円柱状インゴットを切断などの加
工により、所望の形状の分割片２又は３に作製したもの
とする。この分割片は、たとえば図２に示すように目的
の金属間化合物にＦｅおよびＴｂが含まれる場合はそれ
ぞれ純鉄および純Ｔｂを、また図３に示すように目的の
金属間化合物にＮｉおよびＬａが含まれる場合は純Ｎｉ
および純Ｌａをそれぞれの分割片とし、さらに銅を含む
組成であれば銅製の円筒材料を補強材としてそれぞれ構
成元素の分割片を包みこみ、いわゆる複合型の回転電極
を作製する。[0005] Further, the cylinder is a cylinder formed by closely contacting a plurality of divided pieces radially divided from the center line thereof, and the divided pieces are formed of a powdery metal as shown in FIG. It is assumed that a columnar ingot obtained by melting a pure metal of the single element constituting the intermetallic compound by a casting method or the like is formed into a divided piece 2 or 3 having a desired shape by processing such as cutting. For example, when the target intermetallic compound contains Fe and Tb as shown in FIG. 2, the divided pieces contain pure iron and pure Tb, and as shown in FIG. 3, the target intermetallic compound contains Ni and La. If it contains pure Ni
And pure La are used as the respective divided pieces, and if the composition further includes copper, the divided pieces of the constituent elements are wrapped using a copper cylindrical material as a reinforcing material to produce a so-called composite type rotary electrode.
【０００６】また、円筒に金属間化合物を構成する元素
である純金属又はそれらの合金の粉末を装入した後、該
円筒の上下に蓋をしてビレットを形成し、該ビレットを
押出しプレスにて温間あるいは熱間で押出しすることに
より、複合型の電極を作製する。Further, after charging a powder of a pure metal or an alloy thereof, which is an element constituting an intermetallic compound, into a cylinder, a lid is formed on the upper and lower sides of the cylinder to form a billet, and the billet is extruded into a press. By extruding hot or hot, a composite electrode is produced.
【０００７】さらに、目的組成としての金属間化合物が
脆性を示す場合に、脆性を示さない純金属単体あるいは
合金組成の分割片あるいは押出し材を製作し、これらの
分割片あるいは押出し材を適宜組み合わせて目的組成を
有する複合型電極とする。Further, when the intermetallic compound as the target composition shows brittleness, a divided piece or extruded material of a pure metal simple substance or alloy composition which does not show brittleness is manufactured, and these divided pieces or extruded material are appropriately combined. A composite electrode having a desired composition is obtained.
【０００８】[0008]
【作用】本発明の複合型電極においては、目的組成の合
金あるいは金属間化合物が脆性を示すものであっても、
それらの構成元素の脆性を示さない純金属単体あるいは
合金の分割片の組合せ体あるいは粉末材を円筒である金
属製容器を補強材兼母材構成材に装入して、複合型電極
に構成するので、この電極は目的組成の合金あるいは金
属間化合物としては脆性を示すものであっても、複合型
電極の構成物としては脆性を示さないものとすることが
できるため、材料強度が高速回転の際生じる遠心力に耐
えるものとすることができる。さらに補強材の材料とし
て構成成分の材料を選択することにより、補強材からの
不純物の混入を防ぐことができるものである。In the composite electrode of the present invention, even if the alloy or intermetallic compound of the target composition shows brittleness,
A metal container, which is a cylinder made of a pure metal alone or a combination of divided pieces of an alloy that does not exhibit the brittleness of these constituent elements, or a powder material, is loaded into a reinforcing / base material constituent material to form a composite electrode. Therefore, even if this electrode shows brittleness as an alloy or intermetallic compound of the intended composition, it can be made not to show brittleness as a component of the composite electrode. It can withstand the generated centrifugal force. Further, by selecting the material of the constituent component as the material of the reinforcing material, it is possible to prevent impurities from being mixed in from the reinforcing material.
【０００９】[0009]
（実施例１）図１に示す純Ｔｂのインゴット円柱分割片
２および純Ｆｅのインゴット円柱分割片３を図２に示す
ように組み合わせて、図１の中温域に加熱した外径５０
mm、内径４６mm、長さ２５０mmの純Ｆｅの円筒１に挿入
して焼きばめ固定し、平均組成がＴｂＦｅ2 になるよう
にして複合電極を作製する。純Ｔｂの中心角、純Ｆｅの
中心角はそれぞれトータルで２５０°、１１０°になる
ようにした。この時純Ｆｅのチューブは厚さ２mm、外径
５０mmとした。この複合電極を回転数５０００ｒｐｍで
回転させ、プラズマ溶解させ、目的のＴｂＦｅ2 粉末を
製造した。(Example 1) The ingot cylinder segment 2 of pure Tb and the ingot cylinder segment 3 of pure Fe shown in FIG. 1 were combined as shown in FIG.
The composite electrode is manufactured by inserting the pure Fe cylinder 1 having a diameter of 46 mm, an inner diameter of 46 mm, and a length of 250 mm and fixing it by shrink-fitting so that the average composition becomes TbFe 2 . The central angles of pure Tb and pure Fe were set to 250 ° and 110 ° respectively. At this time, the tube made of pure Fe had a thickness of 2 mm and an outer diameter of 50 mm. The composite electrode was rotated at a rotation speed of 5000 rpm, and was subjected to plasma melting to produce a target TbFe 2 powder.
【００１０】（実施例２）純Ｎｉのインゴット円柱分割
片５および純Ｌａのインゴット円柱分割片６を図３に示
すように適宜組み合わせて、外径５０mm、内径４６mm、
長さ２００mmの純Ｎｉの円筒４に挿入し、平均組成がＬ
ａＮｉ5 になるようにして複合電極を作製する。純Ｎｉ
の中心角、純Ｌａの中心角はそれぞれトータルで２２３
°、１３７°になるようにした。この複合電極を回転数
７０００ｒｐｍで回転させ、プラズマ溶解させ、目的の
ＬａＮｉ5 粉末を製造した。(Example 2) As shown in FIG. 3, a pure Ni ingot cylinder divided piece 5 and a pure La ingot cylinder divided piece 6 are appropriately combined as shown in FIG.
Inserted into a pure Ni cylinder 4 having a length of 200 mm, and the average composition is L
in such a manner that the ANI 5 to prepare a composite electrode. Pure Ni
And the central angle of pure La are 223 in total respectively.
° and 137 °. The composite electrode was rotated at a rotation speed of 7000 rpm and plasma-dissolved to produce a target LaNi 5 powder.
【００１１】（実施例３）Ｍｍ（ミッシュメタル）およ
び純Ｎｉの各円柱分割片を円筒に挿入し、平均組成がＭ
ｍＮｉ5 になるようにし、複合電極を作製する。この複
合電極を回転数１００００ｒｐｍで回転させ、プラズマ
溶解させ、目的のＭｍＮｉ5粉末を製造した。(Example 3) Mm (Misch metal) and pure Ni were inserted into a cylinder, and the average composition was M
in such a manner that the MNI 5, to produce a composite electrode. The composite electrode was rotated at 10,000 rpm to perform plasma dissolution to produce a target MmNi 5 powder.
【００１２】（実施例４）図４に示すように、ＮｄＦｅ
ＢＣｕのインゴットを粉砕した後、ＣＩＰにより固化成
形し、各構成元素の粉末固化成形物７を純Ｆｅの外径５
０mm、内径４６mm、長さ２００mmの円筒１に挿入し、平
均組成がNd2Fe14B1Cu0.1になるようにし、複合電極を作
製する。この複合電極を回転数１００００ｒｐｍで回転
させプラズマ溶解させ、Nd2Fe14B1Cu0.1の球状粉末を作
製した。(Embodiment 4) As shown in FIG.
After pulverizing the ingot of BCu, it is solidified and formed by CIP, and the solidified powder 7 of each constituent element is made of pure Fe having an outer diameter of 5
A composite electrode is produced by inserting the cylinder 1 having a diameter of 0 mm, an inner diameter of 46 mm, and a length of 200 mm so that the average composition is Nd 2 Fe 14 B 1 Cu 0.1 . The composite electrode was rotated at a rotational speed of 10000rpm to plasma melting to prepare an Nd 2 Fe 14 B 1 Cu 0 . 1 of spherical powder.
【００１３】[0013]
【発明の効果】以上、本発明は、希土類−遷移金属系あ
るいは遷移金属−遷移金属系のラーベス相、ミッシュメ
タル−遷移金属系水素吸蔵合金はじめ、その他の硬く脆
い金属間化合物のような材料からなる従来作製困難とさ
れてきた棒状電極を容易に製作可能とし、また、たとえ
棒状電極が作製できても高速回転に耐える強度の一体型
電極とするのは従来難しいとされてきた材料の複合回転
電極を容易に得られるものとし、希土類−遷移金属系あ
るいは遷移金属−遷移金属系のラーベス相、ミッシュメ
タル−遷移金属系水素吸蔵合金はじめ、その他の硬く脆
い金属間化合物のような材料の高純度の球状粉末および
が広範囲の組成の球状粉末を工業的に容易に回転電極法
により製造可能とする。As described above, the present invention is based on materials such as rare earth-transition metal or transition metal-transition metal Laves phases, misch metal-transition metal hydrogen storage alloys, and other hard and brittle intermetallic compounds. It is possible to easily manufacture a rod-shaped electrode, which has been considered difficult to manufacture in the past, and it is difficult to form a one-piece electrode that can withstand high-speed rotation even if a rod-shaped electrode can be manufactured. High purity of materials such as rare earth-transition metal or transition metal-transition metal Laves phase, misch metal-transition metal hydrogen storage alloy, and other hard and brittle intermetallic compounds. And a spherical powder having a wide range of compositions can be industrially easily produced by the rotating electrode method.
【図１】電極母材に供する純Ｔｂおよび純Ｆｅの円柱分
割片と純Ｆｅの円筒を示す構成図である。FIG. 1 is a configuration diagram showing a columnar piece of pure Tb and pure Fe and a cylinder of pure Fe to be used as an electrode base material.
【図２】純Ｔｂおよび純Ｆｅの円柱分割片を純Ｆｅの円
筒に装入し作製した複合電極の完成図である。FIG. 2 is a completed view of a composite electrode manufactured by charging a pure Tb and pure Fe cylindrical divided piece into a pure Fe cylinder.
【図３】純Ｌａおよび純Ｎｉの円柱分割片を純Ｎｉの円
筒に装入し作製した複合電極の完成図である。FIG. 3 is a completed view of a composite electrode manufactured by charging pure La and pure Ni cylindrical divided pieces into a pure Ni cylinder.
【図４】ＮｄＦｅＢＣｕ粉末固化成形物を純Ｆｅ円筒に
装入し作製した電極の完成図である。FIG. 4 is a completed view of an electrode prepared by charging a solidified NdFeBCu powder into a pure Fe cylinder.
１ 純Ｆｅ円筒 ２ 純Ｔｂの円柱分割片 ３ 純Ｆｅの円柱分割片 ４ 純Ｎｉの円筒 ５ 純Ｎｉの円柱分割片 ６ 純Ｌａの円柱分割片 ７ ＮｄＦｅＢＣｕの粉末固化成形物 REFERENCE SIGNS LIST 1 pure Fe cylinder 2 pure Tb cylindrical divided piece 3 pure Fe cylindrical divided piece 4 pure Ni cylinder 5 pure Ni cylindrical divided piece 6 pure La cylindrical divided piece 7 powder solidified NdFeBCu
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田中 義和 兵庫県姫路市飾磨区中島字一文字3007番 地 山陽特殊製鋼株式会社内 (56)参考文献 特開 平４−268032（ＪＰ，Ａ) 特開 平２−156003（ＪＰ，Ａ) 特開 平１−222002（ＪＰ，Ａ) 実開 平４−97814（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) B22F 9/14 B01J 19/08 C22C 1/00────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshikazu Tanaka 3007 character, Nakajima character, Shima, Himeji-shi, Hyogo Prefecture Sanyo Special Steel Co., Ltd. JP-A-2-156003 (JP, A) JP-A-1-222002 (JP, A) JP-A-4-97814 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) B22F 9 / 14 B01J 19/08 C22C 1/00
Claims (5)
らなり、該円柱および該円筒は金属間化合物を構成する
元素である純金属又はそれらの合金からなり、かつ全体
として中心軸に垂直な断面において各元素の原子％が該
金属間化合物の構成比となっていることを特徴とする金
属間化合物粉末製造用複合回転電極。1. A cylinder and a cylinder whose inner surface is in close contact with the cylinder. The cylinder and the cylinder are made of a pure metal or an alloy thereof, which is an element constituting an intermetallic compound, and are generally perpendicular to a central axis. A composite rotary electrode for producing an intermetallic compound powder, wherein the atomic percent of each element in the cross section is the composition ratio of the intermetallic compound.
した形の複数個の分割片を密接させて形成した円柱であ
ることを特徴とする請求項１記載の金属間化合物粉末製
造用複合回転電極。2. The composite for producing an intermetallic compound powder according to claim 1, wherein the cylinder is a cylinder formed by closely contacting a plurality of divided pieces radially divided from the center line thereof. Rotating electrode.
る純金属又はそれらの合金の鋳造品であることを特徴と
する請求項１又は請求項２記載の金属間化合物粉末製造
用複合回転電極。3. The composite rotary electrode for producing an intermetallic compound powder according to claim 1, wherein the cylinder is a casting of a pure metal or an alloy thereof, which is an element constituting the intermetallic compound. .
る純金属又はそれらの合金の粉末の固化成形物であるこ
とを特徴とする請求項１又は請求項２記載の金属間化合
物粉末製造用複合回転電極。4. The method for producing an intermetallic compound powder according to claim 1, wherein the cylinder is a solidified product of powder of a pure metal or an alloy thereof, which is an element constituting the intermetallic compound. Composite rotating electrode.
る純金属又はそれらの合金の粉末を装入した後、該円筒
の上下に蓋をしてビレットを形成し、該ビレットを据込
み又は押出すことを特徴とする請求項４記載の金属間化
合物粉末製造用複合回転電極。5. After charging a powder of a pure metal or an alloy thereof, which is an element constituting an intermetallic compound, into a cylinder, forming a billet by covering the top and bottom of the cylinder, and setting the billet up or down. The composite rotary electrode for producing an intermetallic compound powder according to claim 4, wherein the composite rotary electrode is extruded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24199493A JP2779121B2 (en) | 1993-09-02 | 1993-09-02 | Composite rotating electrode for manufacturing intermetallic compound powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24199493A JP2779121B2 (en) | 1993-09-02 | 1993-09-02 | Composite rotating electrode for manufacturing intermetallic compound powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0770615A JPH0770615A (en) | 1995-03-14 |
| JP2779121B2 true JP2779121B2 (en) | 1998-07-23 |
Family
ID=17082672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24199493A Expired - Lifetime JP2779121B2 (en) | 1993-09-02 | 1993-09-02 | Composite rotating electrode for manufacturing intermetallic compound powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2779121B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050150759A1 (en) * | 2002-03-23 | 2005-07-14 | Chang Isaac T.H. | Powder and coating formation method and apparatus |
-
1993
- 1993-09-02 JP JP24199493A patent/JP2779121B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0770615A (en) | 1995-03-14 |
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