JPH03281710A - Manufacture of alloy powder - Google Patents
Manufacture of alloy powderInfo
- Publication number
- JPH03281710A JPH03281710A JP8181790A JP8181790A JPH03281710A JP H03281710 A JPH03281710 A JP H03281710A JP 8181790 A JP8181790 A JP 8181790A JP 8181790 A JP8181790 A JP 8181790A JP H03281710 A JPH03281710 A JP H03281710A
- Authority
- JP
- Japan
- Prior art keywords
- component
- metal
- alloy
- rare earth
- powder
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 60
- 239000000956 alloy Substances 0.000 title claims abstract description 49
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 23
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 22
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 6
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 6
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 6
- 229910002064 alloy oxide Inorganic materials 0.000 claims description 5
- 229910001122 Mischmetal Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 abstract description 20
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 20
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 19
- 238000010438 heat treatment Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 5
- 229910052748 manganese Inorganic materials 0.000 abstract description 3
- 239000011261 inert gas Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 238000003860 storage Methods 0.000 description 12
- 239000000126 substance Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 238000010298 pulverizing process Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000005275 alloying Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000011575 calcium Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は希土類金属を含む合金粉末の製造方法に関し、
特に希土類金属または合金の酸化物粉末とその他の金属
またはその酸化物原料を出発材料とし、これを加熱処理
するもので、生産性、経済性および安全性に優れ、しか
も製品特性も良好な合金粉末の製造方法に関し、水素吸
蔵合金として電池、ヒートバイブ等に利用されるもので
ある。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for producing alloy powder containing rare earth metals,
In particular, oxide powder of rare earth metals or alloys and other metals or their oxide raw materials are used as starting materials, and these are heat-treated.Alloy powder is excellent in productivity, economy, and safety, and also has good product characteristics. Regarding the manufacturing method, it is used as a hydrogen storage alloy in batteries, heat vibrators, etc.
［従来の技術］
従来、希土類金属を含む水素吸蔵合金粉末を製造する方
法としては、希土類金属の酸化物等よりなる原料を還元
することによって希土類金属とした後、特開昭８０−２
４３３７号公報に提案されているように、希土類金属を
高周波真空溶解炉中にて溶融し、これに合金化するため
にＮｌ、Ｃｏ、Ｍｎ。[Prior Art] Conventionally, as a method for producing hydrogen storage alloy powder containing rare earth metals, a raw material consisting of a rare earth metal oxide or the like is reduced to a rare earth metal, and then a rare earth metal is produced.
As proposed in Japanese Patent No. 4337, rare earth metals are melted in a high frequency vacuum melting furnace and Nl, Co, and Mn are alloyed therewith.
ＡＪ等の金属を投入して両者を合金化する。次いで、鋳
造後、合金塊を得て、これを粉砕機等を用いて粉砕し粉
体化するか、合金中に水素を吸放出させることによって
合金塊を粉砕し粉体化する方法が採られている。A metal such as AJ is added to alloy the two. Next, after casting, an alloy ingot is obtained, and this is crushed and powdered using a crusher, or a method is adopted in which the alloy ingot is crushed and powdered by absorbing and releasing hydrogen into the alloy. ing.
［発明が解決しようとする課題］
しかしながら、上述のように、これまでの希土類金属を
含む水素吸蔵合金粉末の製造では、（１）希土類金属の
酸化物等からなる原料を還元することによる希土類金属
の製造工程、（２）希土類金属と他の金属との真空、あ
るいは不活性雰囲気中での溶解合金化工程、（３）鋳造
工程、（４）合金塊の粉砕工程と４段階の工程が必要と
なる。[Problems to be Solved by the Invention] However, as described above, in the conventional production of hydrogen storage alloy powder containing rare earth metals, (1) production of rare earth metals by reducing raw materials made of rare earth metal oxides, etc. A four-step process is required: (2) melting and alloying of rare earth metals and other metals in a vacuum or inert atmosphere, (3) casting process, and (4) pulverizing the alloy ingot. becomes.
このため、それぞれの工程に設備や運転にコストがかか
り、生産性や経済性に劣ったものとなる。For this reason, each process requires equipment and operation costs, resulting in poor productivity and economic efficiency.
また、希土類金属を含む合金は非常に酸化しやすいため
、粉砕工程として機械粉砕を用いる場合には多少なりと
も酸化されてしまい合金特性に影響を及ぼすことがある
。一方、水素粉砕では合金の酸化は抑えられるが、可燃
性ガスである水素を用いる危険性、もしくは安全性を確
保した設備の導入には多大な投資が必要である等の課題
がある。In addition, since alloys containing rare earth metals are highly susceptible to oxidation, when mechanical pulverization is used as a pulverization process, oxidation may occur to some extent, which may affect the properties of the alloy. On the other hand, although hydrogen pulverization can suppress oxidation of the alloy, there are problems such as the danger of using hydrogen, which is a flammable gas, and the need for a large amount of investment to install safety equipment.
本発明の目的は、かかる従来技術の課題に鑑みなされた
もので、大幅に製造コストを低減させ生産性や経済性を
向上させるのみならず、粉砕する際の合金粉末の酸化の
発生や危険性を防止した希土類金属を含む水素吸蔵合金
粉末の製造方法を提供することにある。The purpose of the present invention was made in view of the problems of the prior art, and it is not only to significantly reduce manufacturing costs and improve productivity and economic efficiency, but also to reduce the risk of oxidation and danger of alloy powder during pulverization. An object of the present invention is to provide a method for producing hydrogen storage alloy powder containing rare earth metals that prevents the above.
［課題を解決するための手段］
本発明の上記目的は、希土類金属または合金の酸化物お
よびこれに加え他の金属酸化物の還元工程と希土類金属
と他の金属との合金化工程および粉体化工程を一段の工
程において行なうことにより達成される。[Means for Solving the Problems] The above object of the present invention is to reduce a rare earth metal or an alloy oxide and other metal oxides, an alloying process of a rare earth metal and other metals, and a powder. This is achieved by carrying out the oxidation step in one step.
すなわち本発明は、Ｃｏ、Ｎｉから選択される少なくと
も １種の金属またはその酸化物粉末に、Ｌａ、 ミ
ツシュメタルから選択される少なくとも１種の希土類金
属または合金の酸化物粉末、またはこれに加えてＭｎ、
Ｃｕ、ＡＵから選択される少なくとも １種の金属また
は酸化物粉末を混合し、これにＣａ、Ｍｇ、Ｌｌから選
択される少な（とも １種の金属を添加し、加熱処理す
ることを特徴とする合金粉末の製造方法にある。That is, the present invention provides at least one metal selected from Co and Ni or an oxide powder thereof, and an oxide powder of at least one rare earth metal or alloy selected from La and Mitshu metal, or in addition to Mn. ,
It is characterized by mixing at least one metal or oxide powder selected from Cu and AU, adding at least one metal selected from Ca, Mg, and Ll, and heat-treating the mixture. In the method for producing alloy powder.
本発明では、Ｃｏ，Ｎｉから選択される少なくとも １
種の金属粉末（Ｂ成分ンまたはその酸化物粉末（Ｂ＋成
分）を用いる。これらは加熱反応の隙の核となり、合金
粉末の母体金属となるものである。In the present invention, at least 1 selected from Co, Ni
A seed metal powder (B component) or its oxide powder (B+ component) is used. These become the core of the gap in the heating reaction and become the base metal of the alloy powder.
本発明では、これらの金属またはその酸化物粉末に、Ｌ
ａ、 ミツシュメタル（以下、Ｍｌｌと略する）から
選択される少なくとも １種の希土類金属または合金（
Ａ成分）の酸化物粉末（Ａ＋酸成分を混合する。この際
に、Ｍｎ、Ｃｕ，Ａｌから選択される少なくとも １種
の金属粉末（Ｃ成分）またはその酸化物粉末（Ｃ＋酸成
分を加えてもよい。In the present invention, L is added to these metals or their oxide powders.
a, at least one rare earth metal or alloy selected from Mitsushi metal (hereinafter abbreviated as Mll);
Component A) oxide powder (A + acid component is mixed. At this time, at least one metal powder selected from Mn, Cu, Al (C component) or its oxide powder (C + acid component is mixed. Good too.
これらＢ （Ｂ＋ ）成分、Ａ１成分またはこれに加え
てＣ（Ｃ＋ ）成分の混合割合は、最終的に得られる水
素吸蔵合金粉末が水素吸蔵性能を発揮し得る化学理論当
量（組成）が適宜選択される。−般的には水素吸蔵合金
粉末が下記の化学理論当量となるように配合される。The mixing ratio of the B (B+) component, the A1 component, or the C (C+) component in addition to these components is selected as appropriate to the chemical theoretical equivalent (composition) that allows the finally obtained hydrogen storage alloy powder to exhibit hydrogen storage performance. be done. - Generally, the hydrogen storage alloy powder is blended to have the following chemical theoretical equivalents.
すなわちＡ−Ｃの各成分が、Ａ Ｂ ５． Ａ Ｂ 、
−０８と最終的になるような割合で原料を混合する。That is, each component of A-C is A B 5. AB,
The raw materials are mixed in such a proportion that the final result is -08.
ことが好ましい。It is preferable.
本発明では、これらのＢ （Ｂ＋ ）成分、Ａ、成分、
またはこれに加えてＣ（Ｃ＋ ）成分の混合物に、Ｃａ
、Ｍｇ、Ｌｌから選択される少なくとも１種の金属（Ｄ
成分）を添加する。Ｄ成分は、粉末状、粒状、角片状で
用いられ、上記した希土類金属または合金の酸化物粉末
（Ａ＋酸成分、もしくはこれに加えてその他の金属酸化
物粉末（Ｂ＋成分、Ｃ１成分）を還元し、希土類金属ま
たは合金粉末（Ａ成分） もしくはその他の金属粉末（
Ｂ成分、Ｃ成分）とするもので、その添加量は希土類金
属または合金の酸化物粉末やその他の金属酸化物粉末を
還元するに要する化学理論当量以上であることが少なく
とも必要であり、好ましくは化学理論当量の１．３倍以
上の量添加する。In the present invention, these B (B+) components, A, components,
Or in addition to this, Ca
, Mg, Ll (D
ingredients). Component D is used in the form of powder, granules, or square pieces, and contains the above-mentioned rare earth metal or alloy oxide powder (A+acid component, or in addition to this, other metal oxide powders (B+ component, C1 component). Reduce rare earth metal or alloy powder (component A) or other metal powder (
The amount added must be at least the chemical theoretical equivalent required to reduce rare earth metal or alloy oxide powder and other metal oxide powder, and preferably Add at least 1.3 times the chemical theoretical equivalent.
次に、本発明では、これらＢ （Ｂ＋ ）成分、Ａ１成
分、Ｄ成分、またはこれに加えてＣ（Ｃ１）成分を加熱
処理する。Next, in the present invention, the B (B+) component, the A1 component, the D component, or in addition to these, the C (C1) component is heat-treated.
加熱温度は、Ａ、Ｃ，Ｄの各成分の融点より高く、かつ
Ａ、、Ｂ、Ｂ、、Ｃ，の各成分の融点より低いことが必
要であり、これら各成分の融点から所望の温度が選択さ
れる。一般的な加熱温度は９００〜１４５０℃である。The heating temperature needs to be higher than the melting point of each component A, C, D, and lower than the melting point of each component A, B, B, C, and the desired temperature is determined from the melting point of each component. is selected. A typical heating temperature is 900-1450°C.
加熱温度が９００℃未満では反応の核となるｃｏ，Ｎｉ
から選択される少なくとも １種の金属粉末（Ｂ成分）
への希土類金属または合金粉末（Ａ成分）の拡散が進み
にくく、１４５０℃を超えると反応の核となる上記Ｂ成
分が溶融する恐れがある。この際の加熱時間は１〜６時
間が好ましい。If the heating temperature is less than 900°C, co, Ni, which becomes the nucleus of the reaction,
At least one kind of metal powder (B component) selected from
Diffusion of the rare earth metal or alloy powder (component A) into the reactor is difficult, and if the temperature exceeds 1450° C., the component B, which is the core of the reaction, may melt. The heating time at this time is preferably 1 to 6 hours.
また、ここにおける加熱雰囲気は真空または不活性ガス
雰囲気が採用される。Further, the heating atmosphere here is a vacuum or an inert gas atmosphere.
このようにして得られた合金粉末は、例えばＡＢ、、Ａ
Ｂｓ−ｍ Ｃ，といった化学理論当量を有する。ここに
おいて、Ｘは０〜５の範囲が好ましい。The alloy powder thus obtained is, for example, AB, , A
It has a chemical theoretical equivalent such as Bs-m C. Here, X preferably has a range of 0 to 5.
また、合金粉末の粒径は、Ｂ （Ｂ＋ ）成分、Ｃ（Ｃ
１）成分の粒径を調整することによって所望の粒径分布
を有するものが得られる。In addition, the particle size of the alloy powder is determined by the B (B+) component, C (C
1) A product having a desired particle size distribution can be obtained by adjusting the particle size of the components.
［作用］
Ｂ （Ｂ＋ ）成分、Ａ１成分またはこれに加えて、Ｃ
（Ｃ＋ ）成分を上記した化学理論当量（組成）に最終
的になるような割合で配合し、これにＤ成分を酸化物を
還元する化学理論当量以上、好ましくは１．３倍以上添
加し、所定温度、雰囲気中で加熱することにより、Ａ１
成分またはこれら加えてＢ、成分、ＣＩ酸成分還元され
、またＢ成分、Ｃ成分は溶融する。[Action] B (B+) component, A1 component, or in addition to this, C
The (C+) component is blended in a proportion that will finally have the chemical theoretical equivalent (composition) described above, and the D component is added to this in a chemical theoretical equivalent equivalent to reduce the oxide, preferably 1.3 times or more, By heating in an atmosphere at a predetermined temperature, A1
The components or in addition B, component, and CI acid component are reduced, and the B component and C component are melted.
次いで、固体状態のＢ成分の周囲にＡ＋Ｂ成分またはＡ
＋Ｂ十Ｃ十分成分体合金層が形成され、逐次Ｂ成分の内
部にＡ成分またはＡ＋Ｃ成分が拡散されていき、合金粉
末が得られる。Next, A+B component or A is placed around the B component in a solid state.
A +B+C sufficient component alloy layer is formed, and the A component or A+C component is successively diffused into the B component to obtain an alloy powder.
［実施例］ 以下、実施例等に基づき本発明を具体的に説明する。[Example] Hereinafter, the present invention will be specifically explained based on Examples and the like.
実施例１
第１表に示されるように、最終的な化学理論当量（組成
）がＬａＮＩとなるように、酸化ランタン粉末（Ａ、成
分）とニッケル粉末（Ｂ成分）を混合し、これにカルシ
ウム粉末（Ｄ成分）を酸化ランタンを還元するのに必要
な化学理論当量の１．５倍添加し、さらに混合後、加圧
成形１７、ベレットを調製した。Example 1 As shown in Table 1, lanthanum oxide powder (component A) and nickel powder (component B) were mixed so that the final chemical equivalent (composition) was LaNI, and calcium Powder (component D) was added 1.5 times the chemical theoretical equivalent required to reduce lanthanum oxide, and after further mixing, pressure molding 17 and pellets were prepared.
次に、水冷キャップ付きの石英製反応管に、前記ベレッ
トを入れたルツボを挿入し、反応管内をアルゴンガスに
て充分に不活性雰囲気とした後、第１表に示す温度で１
８時間加熱処理した。Next, the crucible containing the pellet was inserted into a quartz reaction tube equipped with a water-cooled cap, and the inside of the reaction tube was made into a sufficiently inert atmosphere with argon gas.
Heat treatment was performed for 8 hours.
得られた合金粉末について、一定の水素を吸蔵させた時
および放出させた時の圧力変化を測定することによって
水素吸蔵量を測定し、その結果を第１表に示す。なお、
ここにおけるｆｌＰＩ定温度は４５℃、水素導入圧力は
ｓｏ ａｔｍで行なった。The hydrogen storage amount of the obtained alloy powder was measured by measuring the pressure change when a certain amount of hydrogen was stored and when it was released.Table 1 shows the results. In addition,
The flPI constant temperature here was 45° C., and the hydrogen introduction pressure was SO ATM.
実施例２〜１３
第１表に示されるような最終的な化学理論当量となるよ
うに、Ｂ （Ｂ＋ ）成分、Ａ、成分およびこれに加え
てＣ（Ｃ＋ ）成分を加え、さらにＤ成分をＢ、成分ま
たはＡ１成分、Ｃ１成分を還元するのに必要な化学理論
当量の１．５倍添加し、さらに混合後、加圧成形し、ペ
レットを調製した。Examples 2 to 13 In order to obtain the final chemical equivalents as shown in Table 1, component B (B+), component A, component C (C+) was added, and component D was added. Component B, component A1, and component C1 were added in an amount 1.5 times the chemical theoretical equivalent required to reduce the components, and after further mixing, the mixture was press-molded to prepare pellets.
次に、実施例１と同様に水冷キャップ付きの石英製反応
管に、前記ペレットを入れたルツボを挿入１７、反応管
内をアルゴンガスにて充分に不活性雰囲気とした後、１
０００〜１２００℃で１〜６時間加熱処理した。Next, as in Example 1, the crucible containing the pellets was inserted into a quartz reaction tube equipped with a water-cooled cap (17), and the inside of the reaction tube was made into a sufficiently inert atmosphere with argon gas.
Heat treatment was performed at 000 to 1200°C for 1 to 6 hours.
得られた合金粉末について、実施例１と同様の方法によ
って水素吸蔵量を測定し、その結果を第１表に示す。The hydrogen storage capacity of the obtained alloy powder was measured in the same manner as in Example 1, and the results are shown in Table 1.
比較例１〜５
第１表に示されるような最終的な化学理論当量になるよ
うに、金属ランタンあるいはミツシュメタルとニッケル
、さらにはコバルト、マンガン、アルミニウムを秤量、
調製し、これらを高周波真空溶解炉中にて溶融し、得ら
れた合金インゴットをアルゴンガスにて置換した真空グ
ローブボックス中にて破砕し、１ｃｍ角程度となった合
金を水素粉砕をｉｊない、所定の水素吸蔵合金粉末を得
た。Comparative Examples 1 to 5 Metallic lanthanum or Mitsushi metal and nickel, as well as cobalt, manganese, and aluminum were weighed to give the final chemical theoretical equivalents as shown in Table 1.
These are prepared and melted in a high frequency vacuum melting furnace, the obtained alloy ingot is crushed in a vacuum glove box substituted with argon gas, and the alloy is about 1 cm square. A predetermined hydrogen storage alloy powder was obtained.
得られた合金粉末について、実施例１と同様の方法によ
って水素吸蔵；を測定し、その結果を第１表に示す。The hydrogen storage capacity of the obtained alloy powder was measured in the same manner as in Example 1, and the results are shown in Table 1.
［発明の効果］
以−１−のような本発明の合金粉末の製造方法では、希
土類金属または合金の酸化物粉末（Ａ＋酸成分と合金化
月＄４［Ｂ（Ｂｌ）成分またはこれに加えてＣ（Ｃ＋
）成分］とを用い、これに所定量の還元剤（Ｄ成分）を
加えて、還元と合金化を同一工程にて行なうことにより
、多段の工程を経ずして直接希土類金属を含む合金粉末
を製造することができる。従って、従来の合金粉末の製
造方法に対比して大幅に製造コストを低減させ、生産性
や経済性を向上させるのみならず、従来のように合金を
機械粉砕する際に生じる合金粉末の酸化の発生や水素粉
砕する際の危険性を抑止することができるため、本発明
の製造方法は、工業的価値のあるものである。[Effects of the Invention] In the method for producing alloy powder of the present invention as described in -1- below, rare earth metal or alloy oxide powder (alloyed with A + acid component [B (Bl) component or in addition to this)] teC(C+
) component], add a predetermined amount of reducing agent (component D), and perform reduction and alloying in the same process to directly produce alloy powder containing rare earth metals without going through multiple steps. can be manufactured. Therefore, compared to the conventional method of manufacturing alloy powder, it not only significantly reduces the manufacturing cost and improves productivity and economy, but also reduces the oxidation of the alloy powder that occurs when grinding the alloy mechanically as in the past. The production method of the present invention has industrial value because it is possible to suppress the generation and dangers during hydrogen pulverization.
そして、このようにして得られた合金粉末は、例えば水
素吸蔵合金として電池、ヒートバイブ等の広範な用途に
用いられる。The alloy powder thus obtained is used, for example, as a hydrogen storage alloy in a wide range of applications such as batteries and heat vibrators.
手続補正書０．え、 平成２年５月２１日 ８１８１７号Procedural amendment 0. picture, May 21, 1990 No. 81817
Claims (1)
たはその酸化物粉末に、Ｌａ，ミッシュメタルから選択
される少なくとも１種の希土類金属または合金の酸化物
粉末を混合し、これにＣａ，Ｍｇ，Ｌｉから選択される
少なくとも１種の金属を添加し、加熱処理することを特
徴とする合金粉末の製造方法。 ２、希土類金属または合金の酸化物粉末に加えて、Ｍｎ
，Ｃｕ，Ａｌから選択される少なくとも１種の金属また
はその酸化物粉末を混合する請求項１に記載の合金粉末
の製造方法。[Claims] 1. At least one metal selected from Co and Ni or an oxide powder thereof is mixed with an oxide powder of at least one rare earth metal or alloy selected from La and misch metal. A method for producing an alloy powder, which comprises adding thereto at least one metal selected from Ca, Mg, and Li, and heat-treating the mixture. 2. In addition to rare earth metal or alloy oxide powder, Mn
2. The method for producing an alloy powder according to claim 1, wherein at least one metal selected from , Cu, and Al or an oxide powder thereof is mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8181790A JPH03281710A (en) | 1990-03-29 | 1990-03-29 | Manufacture of alloy powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8181790A JPH03281710A (en) | 1990-03-29 | 1990-03-29 | Manufacture of alloy powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03281710A true JPH03281710A (en) | 1991-12-12 |
Family
ID=13757047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8181790A Pending JPH03281710A (en) | 1990-03-29 | 1990-03-29 | Manufacture of alloy powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03281710A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6752881B2 (en) * | 1999-03-26 | 2004-06-22 | Gkss-Forschungszentrum Geesthacht Gmbh | Metalliferous storage material for hydrogen and method for producing same |
-
1990
- 1990-03-29 JP JP8181790A patent/JPH03281710A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6752881B2 (en) * | 1999-03-26 | 2004-06-22 | Gkss-Forschungszentrum Geesthacht Gmbh | Metalliferous storage material for hydrogen and method for producing same |
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