JPH04218602A - Production of metal coated composite powder - Google Patents
Production of metal coated composite powderInfo
- Publication number
- JPH04218602A JPH04218602A JP2413827A JP41382790A JPH04218602A JP H04218602 A JPH04218602 A JP H04218602A JP 2413827 A JP2413827 A JP 2413827A JP 41382790 A JP41382790 A JP 41382790A JP H04218602 A JPH04218602 A JP H04218602A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- hard
- soft metal
- metal
- coated 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.)
- Pending
Links
- 239000000843 powder Substances 0.000 title claims abstract description 106
- 239000002184 metal Substances 0.000 title claims abstract description 54
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 54
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 14
- 150000004820 halides Chemical class 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000005416 organic matter Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 19
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 11
- 239000004570 mortar (masonry) Substances 0.000 description 8
- 238000003825 pressing Methods 0.000 description 8
- 238000007747 plating Methods 0.000 description 7
- 229910052709 silver Inorganic materials 0.000 description 6
- 239000004332 silver Substances 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000007772 electroless plating Methods 0.000 description 4
- 239000011812 mixed powder Substances 0.000 description 4
- 238000007790 scraping Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は金属被覆複合粉末の製造
方法、特に、有機物、ハロゲン化物等の不純物の少ない
複合粉末の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a metal-coated composite powder, and more particularly, to a method for producing a composite powder containing less impurities such as organic substances and halides.
【０００２】0002
【従来の技術】金属被覆複合粉末の製造方法としては従
来種々のものが提案されている。中でも無電解めっきに
よる方法は被覆金属がイオン化された液を用いて、例え
ば銅の表面に銀を析出させる方法で銀被覆銅粉末を製造
し、これは導電塗料等の導電材料として用いられている
。また、機械的な金属被覆複合粉末の製造方法としては
、予め基体粉末の表面に接着剤となる樹脂、脂肪酸等を
被覆し、これに被覆粉末を付着させる方法、あるいは熱
処理を行って拡散、合金化させる方法があり、これらの
方法により得られた粉末は粉末冶金用の混合粉末として
用いられている。2. Description of the Related Art Various methods have been proposed for producing metal-coated composite powders. Among them, the electroless plating method uses a liquid in which the coating metal is ionized to deposit silver on the surface of copper, for example, to produce silver-coated copper powder, which is used as a conductive material such as conductive paint. . In addition, mechanical methods for manufacturing metal-coated composite powders include coating the surface of the base powder with resin, fatty acid, etc. that acts as an adhesive in advance, and adhering the coated powder to this, or performing heat treatment to diffuse and alloy the powder. There are methods of oxidation, and the powders obtained by these methods are used as mixed powders for powder metallurgy.
【０００３】しかしながら、無電解めっきによって得ら
れた金属被覆複合粉末は、めっき液を除去するのが困難
で、めっき液に含まれるハロゲン化物等が粉末に残留し
、このハロゲン化物が導電塗料とした場合に導電性を低
下させる等の欠点がある。また、無電解めっきによる方
法は、めっき液の調整、管理及びめっき後の水洗、排水
の処理等に手間がかかる欠点がある。[0003] However, it is difficult to remove the plating solution from the metal-coated composite powder obtained by electroless plating, and the halides contained in the plating solution remain in the powder. In some cases, there are drawbacks such as reduced conductivity. In addition, the electroless plating method has the drawback that it requires time and effort to prepare and manage the plating solution, wash with water after plating, treat wastewater, and the like.
【０００４】これに対し機械的な被覆粉末の製造方法は
ハロゲン化物を使用せず、まためっき液も用いないこと
から、無電解めっきによる方法の欠点は解消されるもの
の、接着剤として使用される樹脂、脂肪酸等が粉末中に
残留することになる。このため本質的に導電材料として
用いることはできず、粉末冶金用として用いられるが、
焼結工程での炉の汚染又は焼結部品への不純物の残留と
なる欠点がある。On the other hand, mechanical coating powder manufacturing methods do not use halides or plating solutions, so the disadvantages of electroless plating methods are overcome, but they are still used as adhesives. Resins, fatty acids, etc. will remain in the powder. For this reason, it cannot essentially be used as a conductive material, and is used for powder metallurgy.
Disadvantages include contamination of the furnace during the sintering process or residual impurities in the sintered parts.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、上記従来の
技術の欠点を解決すべく種々検討している過程において
、めっき液や接着剤を用いない方法を見出し、有機物、
ハロゲン化物等の不純物が少なく、また工程が少なくて
均一な金属被覆ができる金属被覆複合粉末の製造方法を
見出したものである。Problems to be Solved by the Invention The present invention was made in the process of conducting various studies to solve the drawbacks of the above-mentioned conventional techniques, and discovered a method that does not use plating solutions or adhesives.
The present invention has discovered a method for producing a metal-coated composite powder that contains fewer impurities such as halides, requires fewer steps, and can provide uniform metal coating.
【０００６】[0006]
【課題を解決するための手段】即ち、本発明は粒径が４
０μｍ以上の硬質の粉末と、粒径が前記硬質の粉末の１
／２ 以下の軟質金属粉末とを、硬質の粉末を破壊する
ことなく機械的に混合、攪拌し、軟質金属粉末を変形す
ることによって、硬質の粉末の表面に軟質金属を被覆す
ることを特徴とする金属被覆複合粉末の製造方法である
。[Means for Solving the Problems] That is, the present invention has a particle size of 4
A hard powder with a particle size of 0 μm or more and 1 of the hard powder with a particle size of 0 μm or more.
/2 The following soft metal powders are mechanically mixed and stirred without destroying the hard powder, and the soft metal powder is deformed to coat the surface of the hard powder with the soft metal. This is a method for producing metal-coated composite powder.
【０００７】なお、硬質の粉末とは軟質金属粉末に対す
る相対的な硬質の意味であり、本質的な硬さを意味しな
い。また、軟質金属粉末も、硬質の粉末に対する相対的
な意味である。[0007] The term "hard powder" refers to relative hardness to soft metal powder, and does not mean inherent hardness. Also, soft metal powder is a relative term to hard powder.
【０００８】[0008]
【作用】本発明において、硬質の粉末に軟質金属粉末が
被覆されるのは次のように考えられる。[Operation] In the present invention, the reason why the hard powder is coated with the soft metal powder is considered to be as follows.
【０００９】両粉末を硬質の粉末を破壊することなく軟
質の金属粉末が変形するように機械的に混合、攪拌した
場合、ある確率でもって硬質の粉末と軟質金属粉末が接
触し、この時、硬質の粉末の表面に軟質金属粉末が変形
しながら被覆される。なお、この場合、単純に、一回の
接触で完全に被覆が完了することは考えられないが、離
合を繰り返すことにより軟質金属粉末が徐々に硬質の粉
末に付着し、この時凝着が発生する等して軟質金属粉末
が破砕され、最終的に硬質の粉末表面に軟質金属が被覆
されるものと考えられる。When both powders are mechanically mixed and stirred so that the soft metal powder is deformed without destroying the hard powder, there is a certain probability that the hard powder and the soft metal powder will come into contact with each other, and at this time, The soft metal powder is coated on the surface of the hard powder while being deformed. In this case, it is unlikely that the coating will be completely completed in a single contact, but by repeating the separation, the soft metal powder will gradually adhere to the hard powder, and adhesion will occur at this time. It is thought that the soft metal powder is crushed in this way, and the surface of the hard powder is finally coated with the soft metal.
【００１０】上記のように混合、攪拌された粉末には、
硬質の粉末に軟質金属が被覆された金属被覆複合粉末と
軟質金属粉末及び時には硬質の粉末が残留した混合粉末
となっているが、この場合混合粉末から金属被覆複合粉
末を分離するには篩別けにより容易に分離することがで
きる。即ち、混合、攪拌によって硬質の粉末は変形、破
砕されることはないが、軟質金属粉末は変形、破砕され
る。このため、軟質の金属粉末は混合、攪拌操作の後は
それ以前に比べて細かい粉末となっている。但し、粉末
としての集合体では、混合、攪拌の操作によっても軟質
金属粉末の一部は変形、破砕されない場合、又は、変形
によって見掛上の粒径が大きくなる場合がある。このよ
うな場合、混合、攪拌前の軟質金属粉末の粒径が硬質の
粉末と同等かもしくは大きい場合には、混合、攪拌操作
後の混合粉末には同等の粒径をもった金属被覆複合粉末
と軟質金属粉末とが混在することになり、両粉末の篩に
よる分離は困難となる。従って、本発明では、軟質金属
粉末の粒径を硬質の粉末の１／２ 以下に限定した。[0010] The powder mixed and stirred as described above contains
The metal-coated composite powder is a hard powder coated with a soft metal, the soft metal powder, and sometimes the hard powder remains, but in this case, sieving is required to separate the metal-coated composite powder from the mixed powder. can be easily separated. That is, hard powders are not deformed or crushed by mixing and stirring, but soft metal powders are deformed and crushed. Therefore, after the mixing and stirring operations, the soft metal powder becomes a finer powder than before. However, in the case of a powder aggregate, some of the soft metal powder may not be deformed or crushed even by mixing and stirring operations, or the apparent particle size may become larger due to deformation. In such cases, if the particle size of the soft metal powder before mixing and stirring is equal to or larger than that of the hard powder, the mixed powder after mixing and stirring should be a metal-coated composite powder with the same particle size. This results in a mixture of powder and soft metal powder, making it difficult to separate the two powders using a sieve. Therefore, in the present invention, the particle size of the soft metal powder is limited to 1/2 or less of that of the hard powder.
【００１１】なお、篩により分離された軟質金属粉末は
再度被覆用粉末として利用できるが、金属の種類によっ
ては加工硬化により、硬くなっている場合がある。この
ような場合は、熱処理により軟化させれば再利用が可能
となる。The soft metal powder separated by the sieve can be used again as a coating powder, but depending on the type of metal, it may have become hard due to work hardening. In such a case, it can be reused if it is softened by heat treatment.
【００１２】本発明において、機械的に混合、攪拌する
強さは硬質の粉末と軟質金属粉末の組合せによって決ま
り、一律に決定されるべきものではない。また使用する
混合、攪拌機によってもその定義は異なる。このため、
粉末の組合せ、及び使用する混合、攪拌機により実験を
行って決定せざるを得ないが、搗砕機やハンマーミル等
の衝撃が加わる形式のものは硬質の粉末をも破砕するの
で好ましくなく、粉砕媒体の入っていない混合機は軟質
金属粉末の変形が生じ難いので使用できない。本発明で
用いられる混合、攪拌機の例は、粉末を間に挟み込み、
すり合わせを発生させる形式のものが好ましく、ボール
ミル、らいかい機等が良い。但し、これらの混合、攪拌
機は、潤滑剤のない状態で運転すると粉末が壁面に凝着
することがあるので、この凝着部分をかき取り、再度、
混合、攪拌できる装置を付属させるのが好ましい。In the present invention, the strength of mechanical mixing and stirring is determined by the combination of hard powder and soft metal powder, and cannot be determined uniformly. The definition also differs depending on the mixing and stirring machine used. For this reason,
The combination of powders and the mixer and agitator to be used must be determined through experimentation, but crushers, hammer mills, and other types that apply impact are not preferable as they can crush even hard powders, and the grinding media A mixer without one cannot be used because it is unlikely to cause deformation of the soft metal powder. An example of the mixing/stirring machine used in the present invention is to sandwich powder between
It is preferable to use a type that generates grinding, such as a ball mill or a grinding machine. However, if these mixing and agitating machines are operated without lubricant, the powder may adhere to the wall surface, so scrape off this adhering part and try again.
It is preferable to attach a device capable of mixing and stirring.
【００１３】なお、本発明の方法により得られる金属被
覆複合粉末は球状の粉末となる特徴がある。これは、こ
すり合せが繰り返されることにより全方向から変形を受
け粉末粒子が球状化するものと考えられる。The metal-coated composite powder obtained by the method of the present invention is characterized by being a spherical powder. This is thought to be because the powder particles are deformed from all directions and become spherical due to repeated rubbing.
【００１４】[0014]
【実施例】以下、本発明の実施例について述べる。[Examples] Examples of the present invention will be described below.
【００１５】実施例（１） 市販のらいかい機を使用し
、アルミナの乳鉢、（３６０ｍｍ） にアトマイズ銅粉
（９０〜１００ μｍ） を３ｋｇを装入し、アルミ
ナ乳鉢３本で攪拌しながら、乳鉢と乳棒の押し付け圧力
を調整し、前記銅粉が変形する直前に設定した。次いで
、平均粒径１μｍの銀粉末を ５００ｇ添加し、混合、
攪拌を継続して行った。銀粉の添加後１時間程度で銅の
色はなくなり銀色の粉末となったが、この粉末の一部を
採り出し、乳鉢を使用してアセトンで洗浄したところ、
表面の銀粉は剥離してしまった。このため、さらに混合
、攪拌を継続し、銀粉添加後の２４時間経過の時点で乳
鉢中の粉末の一部に凝集が見られるようになった。この
凝集部分を採り出し、乳鉢で解砕したところ、銀被覆銅
粉末が得られた。得られた粉末を乳鉢を使用してアセト
ンで洗浄しても、表面の銀粉末は剥離せず、均一に付着
していることが判った。Example (1) Using a commercially available mortar, 3 kg of atomized copper powder (90 to 100 μm) was charged into an alumina mortar (360 mm), and while stirring with three alumina mortars, The pressing pressure of the mortar and pestle was adjusted and set immediately before the copper powder was deformed. Next, 500 g of silver powder with an average particle size of 1 μm was added and mixed.
Stirring was continued. Approximately 1 hour after adding the silver powder, the color of the copper disappeared and it became a silver powder, but when a part of this powder was taken out and washed with acetone using a mortar,
The silver powder on the surface has peeled off. Therefore, mixing and stirring were continued, and agglomeration was observed in a portion of the powder in the mortar 24 hours after the addition of the silver powder. When this agglomerated portion was taken out and crushed in a mortar, silver-coated copper powder was obtained. It was found that even when the obtained powder was washed with acetone using a mortar, the silver powder on the surface did not peel off and was adhered uniformly.
【００１６】銀粉添加後、３０時間で混合、攪拌操作を
停止し７０μｍの篩で銀被覆銅粉末と銀粉を分離したと
ころ、３２５０ｇの銀被覆銅粉末が得られた。このこと
から銀の被覆量は約１０％であることが判った。Thirty hours after the addition of the silver powder, the mixing and stirring operations were stopped and the silver-coated copper powder was separated from the silver powder using a 70 μm sieve, and 3250 g of silver-coated copper powder was obtained. From this, it was found that the amount of silver coating was approximately 10%.
【００１７】実施例（２） 図１に概略を示すボールミ
ルを用いて、 １００〜１５０ μｍの粒度のアトマイ
ズＮｉ粉１０ｋｇと平均粒径２０μｍの電解銅微粉３ｋ
ｇを装入、混合、攪拌操作を行った。なお、この時の条
件は次の通りであった。
スチールボール ：１０φｍｍ、３０ｋｇボールミル
内寸法：５０φ×５０ｃｍ
回転数 ：８０ｒｐｍ混合、攪拌時
間 ：２０時間Example (2) Using a ball mill schematically shown in FIG. 1, 10 kg of atomized Ni powder with a particle size of 100 to 150 μm and 3 kg of electrolytic copper fine powder with an average particle size of 20 μm were prepared.
g was charged, mixed, and stirred. The conditions at this time were as follows. Steel ball: 10φmm, 30kg Ball mill internal dimensions: 50φ×50cm Rotation speed: 80rpm Mixing, stirring time: 20 hours
【００１８】混合、攪拌操作後、混合粉末を採り出した
ところ、一部に凝集した粉末が見られたので、これを解
砕し、９０μｍの篩で分級した結果、１０．９２ ｋｇ
の銅被覆ニッケル粉末が得られた。[0018] When the mixed powder was taken out after the mixing and stirring operations, agglomerated powder was found in some parts, so this was crushed and classified with a 90 μm sieve, and the result was 10.92 kg.
A copper-coated nickel powder of 100% was obtained.
【００１９】実施例 （３）〜（５） 図２に概略図を
示す混合、攪拌機を用いて、表１に示す組合せの金属被
覆複合粉末を製造した。なお、図２の混合、攪拌機は次
のように作動する。Examples (3) to (5) Metal-coated composite powders having the combinations shown in Table 1 were produced using a mixing and stirring machine schematically shown in FIG. The mixing and stirring machine shown in FIG. 2 operates as follows.
【００２０】内径５０φ×１０ｃｍの回転ドラム（７）
内に装入された金属粉末（１０）は、押圧片（８）
と回転ドラム（７） の内面との間で圧縮され、同内面
に押し付けられた状態でかき取り片（３） まで達する
とかき取られ、かき取られた金属粉末（１０）は再び押
圧片（８） によって回転ドラム（７） の内面に押し
付けられる。この状態が繰り返されることにより、金属
被覆複合粉末が得られる。[0020] Rotating drum (7) with an inner diameter of 50φ x 10cm
The metal powder (10) charged into the pressing piece (8)
and the inner surface of the rotating drum (7), and when it reaches the scraping piece (3) while being pressed against the same inner surface, it is scraped off, and the scraped metal powder (10) is again pressed against the pressing piece (3). 8) is pressed against the inner surface of the rotating drum (7). By repeating this state, a metal-coated composite powder is obtained.
【００２１】なお、押圧調整装置（９） は、硬質の粉
末のみを装入し、押圧調整装置（９） により押圧力を
調節しながら混合、攪拌機を作動させ、硬質の粉末が破
壊されるより小さい押圧力に調節するためのものである
。このように押圧力を調節した後に被覆用の軟質金属粉
末を装入し、前記のように押圧、かき取りを繰り返して
金属被覆複合粉末を得るものである。Note that the pressure adjustment device (9) charges only the hard powder and operates the mixer and stirrer while adjusting the pressing force with the pressure adjustment device (9) to prevent the hard powder from being destroyed. This is for adjusting to a small pressing force. After adjusting the pressing force in this way, a soft metal powder for coating is charged, and the pressing and scraping are repeated as described above to obtain a metal-coated composite powder.
【００２２】[0022]
【表１】[Table 1]
【００２３】表１に示すように、図２に概略図を示す混
合、攪拌機を用いて金属被覆複合粉末をそれぞれの条件
で製造した結果、いずれも良好なものが得られた。なお
、角状粉の搗砕鉄粉に銅を被覆した結果、得られた粉末
は球状粉となっていた。As shown in Table 1, metal-coated composite powders were produced under various conditions using the mixing and stirring machine schematically shown in FIG. 2, and as a result, good products were obtained in all cases. In addition, as a result of coating copper on the crushed iron powder of angular powder, the obtained powder was spherical powder.
【００２４】[0024]
【発明の効果】本発明の方法を適用すれば、その工程中
に有機物、ハロゲン化物等を一切使用しないため、不純
物の少ない金属被覆複合粉末が得られ、これを導電材料
として用いても導電性を劣化させず、また粉末冶金用と
して用いても炉の汚染、又は焼結部品への不純物の残留
はない。さらに、めっき液や接着剤の使用もないことか
ら、廃液、排ガスの処理が不要であり、本発明は極めて
経済的であり、産業上有用な発明である。[Effects of the Invention] By applying the method of the present invention, since no organic substances, halides, etc. are used during the process, a metal-coated composite powder with few impurities can be obtained, and even when used as a conductive material, it is conductive. It does not cause any deterioration, and even when used for powder metallurgy, it does not contaminate the furnace or leave impurities in the sintered parts. Furthermore, since no plating solution or adhesive is used, there is no need to treat waste liquid or exhaust gas, making the present invention extremely economical and industrially useful.
【００２５】[0025]
【図１】本発明の実施例（２） で用いたボールミルの
概略図である。FIG. 1 is a schematic diagram of a ball mill used in Example (2) of the present invention.
【図２】本発明の実施例 （３）〜（５） に用いた混
合、攪拌機の概略図である。FIG. 2 is a schematic diagram of a mixing and stirring machine used in Examples (3) to (5) of the present invention.
（１） ボールミル容器 （２） スチールボール （３） かきとり片 （４） 加重保持ローラー （５） 回転軸 （６） かきとり片固定軸 （７） 回転ドラム （８） 押圧片 （９） 押圧調節装置 （１０） 金属粉末 (1) Ball mill container (2) Steel ball (3) Scraping piece (4) Weighted holding roller (5) Rotation axis (6) Scraping piece fixed shaft (7) Rotating drum (8) Pressing piece (9) Pressure adjustment device (10) Metal powder
Claims (1)
粒径が前記硬質の粉末の１／２ 以下の軟質金属粉末と
を、硬質の粉末を破壊することなく機械的に混合、攪拌
し、軟質金属粉末を変形することによって、硬質の粉末
の表面に軟質金属を被覆することを特徴とする金属被覆
複合粉末の製造方法。[Claim 1] Hard powder with a particle size of 40 μm or more,
A soft metal powder with a particle size of 1/2 or less of the hard powder is mechanically mixed and stirred without destroying the hard powder, and the soft metal powder is deformed to form a powder on the surface of the hard powder. A method for producing a metal-coated composite powder characterized by coating a soft metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2413827A JPH04218602A (en) | 1990-12-18 | 1990-12-18 | Production of metal coated composite powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2413827A JPH04218602A (en) | 1990-12-18 | 1990-12-18 | Production of metal coated composite powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04218602A true JPH04218602A (en) | 1992-08-10 |
Family
ID=18522388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2413827A Pending JPH04218602A (en) | 1990-12-18 | 1990-12-18 | Production of metal coated composite powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04218602A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05317679A (en) * | 1992-05-25 | 1993-12-03 | Hosokawa Micron Corp | Production of composite particles and composite particles obtained by the same |
| JP2012072466A (en) * | 2010-09-29 | 2012-04-12 | Sumitomo Metal Mining Co Ltd | METHOD OF MANUFACTURING Cu-Ga ALLOY SPUTTERING TARGET AND THE Cu-Ga ALLOY SPUTTERING TARGET |
| JP2012072467A (en) * | 2010-09-29 | 2012-04-12 | Sumitomo Metal Mining Co Ltd | Cu-Ga ALLOY SPUTTERING TARGET AND METHOD FOR MANUFACTURING Cu-Ga ALLOY SPUTTERING TARGET |
| JP2012072468A (en) * | 2010-09-29 | 2012-04-12 | Sumitomo Metal Mining Co Ltd | Cu-Ga ALLOY SPUTTERING TARGET AND METHOD FOR MANUFACTURING Cu-Ga ALLOY SPUTTERING TARGET |
| JP2012201948A (en) * | 2011-03-25 | 2012-10-22 | Sumitomo Metal Mining Co Ltd | Cu-Ga ALLOY SPUTTERING TARGET |
| JP2012214898A (en) * | 2011-03-31 | 2012-11-08 | Toda Kogyo Corp | Silver-coated copper powder and method for producing the same, and conductive paste, conductive adhesive agent, conductive film, and electric circuit containing the silver-coated copper powder |
| WO2014054618A1 (en) * | 2012-10-03 | 2014-04-10 | 戸田工業株式会社 | Silver hybrid copper powder, method for producing same, conductive paste containing silver hybrid copper powder, conductive adhesive, conductive film and electrical circuit |
| CN105798290A (en) * | 2016-04-15 | 2016-07-27 | 无锡钻探工具厂有限公司 | Method for evenly distributing diamond in matrix through diamond pelletizing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58144401A (en) * | 1982-02-22 | 1983-08-27 | Toshiba Corp | Preparation of tungsten alloy |
| JPS5990302A (en) * | 1982-11-12 | 1984-05-24 | 富士通株式会社 | Silver-palladium conductive material and method of producingsame |
| JPS63244706A (en) * | 1987-03-31 | 1988-10-12 | Toshiba Corp | Manufacture of iron core |
| JPH02225601A (en) * | 1989-02-28 | 1990-09-07 | Nisshin Steel Co Ltd | Manufacture of metal powder sintered body |
-
1990
- 1990-12-18 JP JP2413827A patent/JPH04218602A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58144401A (en) * | 1982-02-22 | 1983-08-27 | Toshiba Corp | Preparation of tungsten alloy |
| JPS5990302A (en) * | 1982-11-12 | 1984-05-24 | 富士通株式会社 | Silver-palladium conductive material and method of producingsame |
| JPS63244706A (en) * | 1987-03-31 | 1988-10-12 | Toshiba Corp | Manufacture of iron core |
| JPH02225601A (en) * | 1989-02-28 | 1990-09-07 | Nisshin Steel Co Ltd | Manufacture of metal powder sintered body |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05317679A (en) * | 1992-05-25 | 1993-12-03 | Hosokawa Micron Corp | Production of composite particles and composite particles obtained by the same |
| JP2012072466A (en) * | 2010-09-29 | 2012-04-12 | Sumitomo Metal Mining Co Ltd | METHOD OF MANUFACTURING Cu-Ga ALLOY SPUTTERING TARGET AND THE Cu-Ga ALLOY SPUTTERING TARGET |
| JP2012072467A (en) * | 2010-09-29 | 2012-04-12 | Sumitomo Metal Mining Co Ltd | Cu-Ga ALLOY SPUTTERING TARGET AND METHOD FOR MANUFACTURING Cu-Ga ALLOY SPUTTERING TARGET |
| JP2012072468A (en) * | 2010-09-29 | 2012-04-12 | Sumitomo Metal Mining Co Ltd | Cu-Ga ALLOY SPUTTERING TARGET AND METHOD FOR MANUFACTURING Cu-Ga ALLOY SPUTTERING TARGET |
| JP2012201948A (en) * | 2011-03-25 | 2012-10-22 | Sumitomo Metal Mining Co Ltd | Cu-Ga ALLOY SPUTTERING TARGET |
| JP2012214898A (en) * | 2011-03-31 | 2012-11-08 | Toda Kogyo Corp | Silver-coated copper powder and method for producing the same, and conductive paste, conductive adhesive agent, conductive film, and electric circuit containing the silver-coated copper powder |
| WO2014054618A1 (en) * | 2012-10-03 | 2014-04-10 | 戸田工業株式会社 | Silver hybrid copper powder, method for producing same, conductive paste containing silver hybrid copper powder, conductive adhesive, conductive film and electrical circuit |
| CN105798290A (en) * | 2016-04-15 | 2016-07-27 | 无锡钻探工具厂有限公司 | Method for evenly distributing diamond in matrix through diamond pelletizing |
| CN105798290B (en) * | 2016-04-15 | 2018-02-06 | 无锡钻探工具厂有限公司 | It is a kind of to realize diamond method uniform in carcass with diamond granulation |
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