JPS6149373B2 - - Google Patents
Info
- Publication number
- JPS6149373B2 JPS6149373B2 JP27921284A JP27921284A JPS6149373B2 JP S6149373 B2 JPS6149373 B2 JP S6149373B2 JP 27921284 A JP27921284 A JP 27921284A JP 27921284 A JP27921284 A JP 27921284A JP S6149373 B2 JPS6149373 B2 JP S6149373B2
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- alloy
- powder
- particle size
- spraying
- 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
Links
- 239000000843 powder Substances 0.000 claims description 30
- 229910052782 aluminium Inorganic materials 0.000 claims description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 25
- 229910045601 alloy Inorganic materials 0.000 claims description 23
- 239000000956 alloy Substances 0.000 claims description 23
- 238000005507 spraying Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 7
- 239000010953 base metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- -1 from a molten state Inorganic materials 0.000 description 1
- 238000009689 gas atomisation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Description
〈産業上の利用分野〉
本発明は各種の用途分野で用いられているアル
ミニウム合金粉末に於いてアルミニウムの含有が
微量範囲で異なる合金粉末の製造方法に関するも
のである。
〈従来の技述〉
アルミニウム系合金粉末の製造方法として一般
的な空気噴霧法あるいはガス噴霧法による場合、
所望する合金成分の組成となる様に地金を準備
し、これを溶解し、溶湯を噴霧して合金粉末を得
ている。この場合に於いて超塑性材料や超微粉材
料の分野等でアルミニウムの含有量が僅かに異な
る合金粉末を必要とする場合は再度地金の割合を
変化させて溶解、噴霧を行なわねばならなかつ
た。
〈発明が解決しようとする問題点〉
本発明は、アルミニウム系合金に於いて、アル
ミニウムの含有量が微量に異なる合金粉末を得る
のにその都度溶解時の地金の割合を変え、数回の
噴霧をなすことなく、一回の噴霧作業で行なえる
様になす方法を提供せんとするものである。
〈問題点を解決する為の手段〉
本発明は、アルミニウム系合金を溶融状とし、
噴霧法により合金粉末を得、この合金粉末をある
粒度範囲毎の複数群に分別回収することを特徴と
するアルミニウムの含有量が微量に異なるアルミ
ニウム系合金粉末の製造方法である。
〈作用〉
アルミニウム系合金、例えばZn―22Al合金を
溶融状態から噴霧する場合にはアルミニウムの偏
析が大で、その他時効によるアルミニウムの析出
等の原因から、得られる粉末の表面層は図中１で
示す如くアルミニウムがリツチとなり、逆に粉末
の中央部２はZnがリツチとなる。
又一般的に粉末にあつては、その粒径が小さく
なるに従い、比表面積は増大する。
本発明は上記二つの現象、即ち噴霧法により得
られるアルミニウム系合金粉末に於いて、その表
面層と中央部とではアルミニウムの含有率が異な
る事実及び合金粉末の粒径が小さい程比表面積が
大である事実を活用し、噴霧法により得られたあ
る粒度範囲の広がりを持つ合金粉末をある粒度毎
に分別して複数群として回収することにより得ら
れる複数群毎にアルミニウムの含有量が僅かずつ
異なる合金粉末を得るものである。
〈実施例〉
99.99％以上の純度を有するアルミニウムとZn
とを重量配合比で22：78となる様に配合し、700
℃まで昇温溶解し、脱酸及び脱ガス（フラツクス
処理）を行なつた後、アルゴンガスによるガス噴
霧法（ガス吐出量3.5m3／min，溶湯の出湯量50
Kgｆ／h.）により噴霧し合金粉末を得た。
得られた合金粉末を25μｍ以下、25〜44μｍ及
び44μｍ以上の３種類に分別回収し、これらの粉
末群毎の化学分析値は下表の如くであつた。
<Industrial Application Field> The present invention relates to a method for producing aluminum alloy powders used in various fields of application, in which the content of aluminum varies within a very small range. <Conventional Technique> When using a general air atomization method or gas atomization method as a manufacturing method for aluminum alloy powder,
An alloy powder is obtained by preparing a metal base having a desired alloy composition, melting it, and spraying the molten metal. In this case, if an alloy powder with a slightly different aluminum content is required in the field of superplastic materials or ultrafine powder materials, it is necessary to change the proportion of the base metal again and perform melting and spraying. . <Problems to be Solved by the Invention> The present invention solves the problem of producing aluminum-based alloys by changing the ratio of base metal during melting each time to obtain alloy powders with slightly different aluminum contents. The object of the present invention is to provide a method that allows the spraying operation to be performed in one time without spraying. <Means for Solving the Problems> The present invention provides a melted aluminum alloy,
This is a method for producing aluminum-based alloy powders with slightly different aluminum contents, which is characterized by obtaining alloy powders by a spraying method and separately collecting the alloy powders into a plurality of groups each having a certain particle size range. <Function> When spraying an aluminum alloy, such as a Zn-22Al alloy, from a molten state, aluminum segregation is large, and due to other causes such as precipitation of aluminum due to aging, the surface layer of the powder obtained is as shown in 1 in the figure. As shown, the powder becomes rich in aluminum, and conversely, the central part 2 of the powder becomes rich in Zn. Generally, in the case of powder, the specific surface area increases as the particle size decreases. The present invention addresses the two phenomena mentioned above, namely, the fact that in the aluminum alloy powder obtained by the spraying method, the aluminum content is different between the surface layer and the central part, and the smaller the particle size of the alloy powder, the larger the specific surface area. By taking advantage of the fact that alloy powder with a spread of a certain particle size range obtained by a spraying method is separated by a certain particle size and collected as multiple groups, the aluminum content is slightly different in each group. This is to obtain alloy powder. <Example> Aluminum and Zn with purity of 99.99% or more
and 700
After heating and melting to ℃, deoxidizing and degassing (flux treatment), gas spraying method using argon gas (gas discharge rate 3.5 m 3 /min, molten metal output rate 50
Kgf/h.) to obtain alloy powder. The obtained alloy powder was separated into three types: 25 μm or less, 25-44 μm, and 44 μm or more, and the chemical analysis values for each powder group were as shown in the table below.
【表】
〈発明の効果〉
本発明によれば、アルミニウムの微量変化に伴
うZn―22Al合金の超塑性的性質の変化やアルミ
ニウム系超微粉材料その他の諸性質を研究する為
に必要な合金粉末を得るのにその都度溶解する地
金の配合割合を変化せしめ何回にも渡つて噴霧作
業を繰返すことなく、一回の噴霧作業を行い、そ
の後は粒度を変えて分別回収するという簡単な作
業でアルミニウム含有量が僅かずつ異なる複数群
を得ることが可能で、かつ又この本発明方法によ
る場合には地金の配合段階からZnとアルミニウ
ムの配合をかえる事によつても得難い様な微量に
アルミニウムが変化した合金粉末を得ることが出
来る。
また本発明方法を行う事により得られる結果、
即ちある一定組成の地金から本発明方法に沿つて
得たある粒度範囲のアルミニウム系合金粉末の正
確なアルミニウム含有率を知る事で予め配合する
地金の組成を変えたり、又は所望するアルミニウ
ム含有率の合金粉末を得るには、どれ位の粒度と
すればよいかという事も正確に把握できる。
従つて今後活用分野が広がると考えられるアル
ミニウム系超微粉材料等でより正確な組成のアル
ミニウム系合金粉末を得る事ができるものであ
る。[Table] <Effects of the Invention> According to the present invention, alloy powder necessary for researching changes in superplastic properties of Zn-22Al alloy due to minute changes in aluminum, aluminum-based ultrafine powder materials, and other properties can be obtained. It is a simple process where the mixing ratio of the melted metal is changed each time to obtain the metal, and instead of repeating the spraying process many times, the spraying process is performed once, and then the particle size is changed and the particle size is separated and collected. It is possible to obtain multiple groups with slightly different aluminum contents, and when using the method of the present invention, it is possible to obtain a trace amount that is difficult to obtain even by changing the combination of Zn and aluminum from the mixing stage of the base metal. It is possible to obtain an alloy powder in which aluminum is changed. Furthermore, the results obtained by carrying out the method of the present invention,
That is, by knowing the exact aluminum content of the aluminum alloy powder in a certain particle size range obtained from a base metal of a certain composition according to the method of the present invention, it is possible to change the composition of the base metal to be mixed in advance, or to obtain the desired aluminum content. It is also possible to accurately determine what particle size should be used in order to obtain alloy powder with a certain ratio. Therefore, it is possible to obtain aluminum-based alloy powder with a more accurate composition for aluminum-based ultrafine powder materials, etc., which are expected to be used in a wide range of fields in the future.
図面は本発明で用いる噴霧法によつて得られる
Zn―アルミニウム合金の拡大断面図。
図中、１：アルミニウムがリツチな部分、２：
Znがリツチな部分。
The drawings are obtained by the spray method used in the present invention.
Enlarged cross-sectional view of Zn-aluminum alloy. In the figure, 1: aluminum-rich part, 2:
The part that is rich in Zn.
Claims (1)
より合金粉末を得、この合金粉末をある粒度範囲
毎の複数群に分別回収することを特徴とするアル
ミニウムの含有量が微量に異なるアルミニウム系
合金粉末の製造方法。1. A process for producing aluminum-based alloy powders with slightly different aluminum contents, which is characterized by melting aluminum-based alloys, obtaining alloy powders by a spraying method, and collecting the alloy powders separately into a plurality of groups within a certain particle size range. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27921284A JPS61157603A (en) | 1984-12-28 | 1984-12-28 | Manufacture of aluminum alloy powder having slightly different aluminum contents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27921284A JPS61157603A (en) | 1984-12-28 | 1984-12-28 | Manufacture of aluminum alloy powder having slightly different aluminum contents |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61157603A JPS61157603A (en) | 1986-07-17 |
| JPS6149373B2 true JPS6149373B2 (en) | 1986-10-29 |
Family
ID=17607989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27921284A Granted JPS61157603A (en) | 1984-12-28 | 1984-12-28 | Manufacture of aluminum alloy powder having slightly different aluminum contents |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61157603A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7229715B2 (en) | 2003-06-17 | 2007-06-12 | The Gillette Company | Anode for battery |
| US7247407B2 (en) | 1997-08-01 | 2007-07-24 | The Gillette Company | Electrode having modal distribution of zinc-based particles |
-
1984
- 1984-12-28 JP JP27921284A patent/JPS61157603A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7247407B2 (en) | 1997-08-01 | 2007-07-24 | The Gillette Company | Electrode having modal distribution of zinc-based particles |
| US7579113B2 (en) | 1997-08-01 | 2009-08-25 | The Gillette Company | Electrode having modal distribution of zinc-based particles |
| US7229715B2 (en) | 2003-06-17 | 2007-06-12 | The Gillette Company | Anode for battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61157603A (en) | 1986-07-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |