WO2004094700A1 - 金属粒子およびその製造方法 - Google Patents
金属粒子およびその製造方法 Download PDFInfo
- Publication number
- WO2004094700A1 WO2004094700A1 PCT/JP2004/001599 JP2004001599W WO2004094700A1 WO 2004094700 A1 WO2004094700 A1 WO 2004094700A1 JP 2004001599 W JP2004001599 W JP 2004001599W WO 2004094700 A1 WO2004094700 A1 WO 2004094700A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal particles
- electrode
- particles according
- producing
- carbon fibers
- 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.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/12—Metallic powder containing non-metallic particles
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C5/00—Electrolytic production, recovery or refining of metal powders or porous metal masses
- C25C5/02—Electrolytic production, recovery or refining of metal powders or porous metal masses from solutions
Definitions
- the present invention relates to a metal material that can be suitably used as a material for powder metallurgy, electric contacts, batteries, electromagnetic wave shields, conductive materials, friction material contacts, sliding materials, and the like, and a method for producing the same.
- composite materials in which carbon nanotubes or carbon nanofibers (hereinafter referred to as fine carbon fibers) are dispersed in a metal are known.
- the composite material disclosed in Japanese Patent Application Laid-Open No. 2000-224304 is obtained by mixing fine carbon fibers and metal powder and sintering them to form a block.
- fine carbon fibers are extremely fine with a diameter of about 5 to 50 nm, while metal powders generally have a diameter in the range of 200 to 100 nm.
- the diameter of the fine carbon fiber is an order of magnitude larger. If these two materials are simply mixed, uniform mixing is difficult.
- the metal powder is first dissolved in an acid solution.
- an acid solution For example, copper powder is dissolved in hydrochloric acid, sulfuric acid, or nitric acid. Then, fine carbon fibers are dispersed in this solution, and then dried and sintered to obtain a composite material.
- the step of dissolving the metal powder and further drying and sintering the acid solution in which the fine carbon fibers are dispersed is extremely troublesome and requires a long time.
- the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide metal particles in which fine carbon fibers are uniformly dispersed, and a method for producing the same. Disclosure of the invention
- the method for producing metal particles according to the present invention comprises the steps of: electrolyzing an electrolytic solution in which fine carbon fibers are dispersed, and depositing metal particles mixed with fine carbon fibers on a force source electrode; Separating the power source electrode from the force source electrode.
- the method includes a step of collecting, washing, and drying the separated metal particles.
- the present invention is characterized in that the metal particles are precipitated in the range of several hundred nm to several tens of m in average particle diameter by adjusting the electrolysis conditions.
- the metal particles can be copper metal particles.
- the force source electrode on which the metal particles are deposited is immersed in acetone, and the metal particles are separated by irradiating ultrasonic waves.
- compressed air may be blown to the cathode electrode on which the metal particles are deposited, or impact or vibration may be applied to the force electrode electrode during electrolysis to separate the metal particles from the cathode electrode.
- a dispersant comprising an organic compound to disperse the fine carbon fibers in the electrolytic solution.
- Polyacrylic acid having a molecular weight of 500 or more can be suitably used as the dispersant.
- an electrode having a roughened surface can be used as the force sword electrode.
- the metal particles according to the present invention are produced by any one of the production methods described above.
- various composite materials can be obtained by melting the aggregate of the metal particles.
- An aqueous solution, a molten salt, or an ionic liquid can be used as the electrolyte.
- FIG. 1 is a scanning electron micrograph of metal particles deposited on a force source electrode in Example 1
- FIG. 2 is an enlarged view of FIG. 1
- FIG. 4 is an enlarged view of FIG. 3
- FIG. 5 is a scanning electron microscope photograph of the metal particles deposited on the force source electrode in Example 3.
- FIG. 6 is an electron micrograph
- FIG. 6 is a scanning electron micrograph of metal particles deposited on the force source electrode in Example 4
- FIG. 7 is a scanning electron micrograph of metal particles deposited on the force source electrode in Example 5.
- FIG. 8 is a scanning electron micrograph of the metal particles deposited on the force sword electrode in Example 6
- FIG. 9 is a scanning electron micrograph of the metal particles deposited on the force sword electrode in Example 7.
- 5 is a scanning electron micrograph of metal particles.
- the method for producing metal particles according to the present invention includes the steps of: electrolyzing an electrolytic solution in which fine carbon fibers are dispersed, thereby precipitating metal particles mixed with fine carbon fibers on a force source electrode. Separating the deposited metal particles from above the cathode electrode.
- the required metal particles can be obtained by collecting, washing, and drying the separated metal particles.
- metal particles having an average particle size of several hundred nm to several tens m can be precipitated.
- the optimum value of the current density is selected in consideration of the particle size and productivity.
- Electrolytic copper is used as the anode electrode in the electrolytic cell to supply copper ions during electrolysis.
- a metal other than copper, for example, lead may be used as the anode electrode, and copper ions may be supplied from the outside.
- the electrolytic solution during the electrolysis is stirred by a pump, and at the same time, the electrolytic solution concentration and the component amount are controlled so as to have a predetermined ratio.
- the metal particles can be separated by immersing the cathode electrode in acetone and irradiating it with ultrasonic waves.
- the metal particles may be separated from the cathode electrode by blowing compressed air to the force source electrode on which the metal particles are deposited, or by applying an impact or vibration to the force source electrode during electrolysis.
- An organic or inorganic compound such as thiourea, gelatin, tungsten, or chloride may be added to the electrolytic solution in order to adjust the particle size and strength of the precipitated particles and the separability from the cathode electrode.
- titanium for the force sword electrode, which has poor adhesion of the metal to be precipitated and easily separates the precipitated particles. Further, it is desirable that the surface of the force sword electrode be roughened in order to make the precipitated metal particles.
- niobium, tantalum, or platinum fixed to the surface of titanium in the form of microprojections can be suitably used for the force source electrode.
- a dispersant composed of an organic compound may be added.
- polyacrylic acid having a molecular weight of 500 or more can be suitably used.
- the particle size of the CNT or CNF-modified metal particles produced depends on the metal ion concentration in the electrolyte, the electrolysis current density, the diameter of the CNT or CNF fiber and its length in correlation.
- the type of metal of the metal particles is not limited to copper.
- Various composite materials can be obtained by melting the aggregate of the metal particles.
- various additives may be added to the metal particles to form a composite material.
- a composite material in which the blending amount of the fine carbon fibers is controlled can be realized by appropriately controlling and mixing the mixing ratio of the metal particles mixed with the fine carbon fibers and the metal particles not containing the fine carbon fibers.
- it can be used as a material for various composite materials, such as being mixed with a resin.
- means for producing these composite materials means such as resin molding, sintering, metal injection molding and the like can be used.
- the metal particles obtained as described above are extremely fine particles of several hundred nm to several tens of m, and fine carbon fibers are mixed in each metal particle. Therefore, the composite material obtained by melting the aggregate of these metal particles contains fine carbon fibers uniformly mixed therein.
- such composite materials can be used in a variety of applications, such as bearings that require mobility, electrodes and electrical contacts that require high electrical conductivity, and heat dissipation mechanisms that require high thermal conductivity.
- PA5000 is polyacrylic acid with a molecular weight of 5000, and CNF is carbon nanofiber: fine carbon fiber.
- PA5000 is polyacrylic acid with a molecular weight of 5000, and CNF is carbon fiber: fine carbon fiber.
- Example 1 As is clear from Example 1 and Example 2, a granular composite can be obtained by increasing the current density and making it slightly burnish. It can also be seen that the size of the granular material can be controlled by changing the electrolysis conditions (electrolysis time).
- Example 3 As is clear from Example 1 and Example 2, a granular composite can be obtained by increasing the current density and making it slightly burnish. It can also be seen that the size of the granular material can be controlled by changing the electrolysis conditions (electrolysis time).
- PA5000 is polyacrylic acid with a molecular weight of 5000
- the CNF content in the CU-CNF composite can be increased by increasing the CNF content in the electrolytic solution.
- the particle size of metal particles can be adjusted from an extremely fine particle size of several hundred nm to several tens of meters / m, which is easy to handle, and the amount of fine carbon fibers mixed can be controlled. It is also possible.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Powder Metallurgy (AREA)
- Electrolytic Production Of Metals (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112004000296T DE112004000296T5 (de) | 2003-02-18 | 2004-02-13 | Metallteilchen und Verfahren zur Herstellung derselben |
| US10/545,708 US20060065543A1 (en) | 2003-02-18 | 2004-02-13 | Metal particles and method for producing same |
| JP2005505685A JP4421556B2 (ja) | 2003-02-18 | 2004-02-13 | 金属粒子およびその製造方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003-040308 | 2003-02-18 | ||
| JP2003040308 | 2003-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004094700A1 true WO2004094700A1 (ja) | 2004-11-04 |
Family
ID=33307866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/001599 Ceased WO2004094700A1 (ja) | 2003-02-18 | 2004-02-13 | 金属粒子およびその製造方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20060065543A1 (ja) |
| JP (1) | JP4421556B2 (ja) |
| DE (1) | DE112004000296T5 (ja) |
| WO (1) | WO2004094700A1 (ja) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006054066A (ja) * | 2004-08-10 | 2006-02-23 | Toray Ind Inc | 導電性粒子および異方導電性材料用組成物 |
| WO2006043431A1 (ja) * | 2004-10-21 | 2006-04-27 | Shinano Kenshi Kabushiki Kaisha | 複合金属体及びその製造方法 |
| JP2006249484A (ja) * | 2005-03-09 | 2006-09-21 | Shinshu Univ | 金めっき液および金めっき方法 |
| EP1626110A3 (en) * | 2004-07-30 | 2008-02-06 | Shinano Kenshi Kabushiki Kaisha | Metallic particle and method of producing the same |
| JP2011014650A (ja) * | 2009-06-30 | 2011-01-20 | Panasonic Electric Works Co Ltd | 電磁シールド性成形材料、電子部品用電磁シールド性成形品、建材用電磁シールド性成形品、及び電磁シールド性成形材料の製造方法 |
| JP2011058027A (ja) * | 2009-09-07 | 2011-03-24 | Fukuda Metal Foil & Powder Co Ltd | 電解銅粉の集合体及び該電解銅粉の製造方法 |
| JP2015057783A (ja) * | 2008-11-10 | 2015-03-26 | クライロン・グローバル・エルエルシー | 改善された物理的および電気的特性を有する固体組成物 |
| CN104674327A (zh) * | 2015-03-03 | 2015-06-03 | 北京汽车股份有限公司 | 复合镀层的制备方法及复合镀层 |
| JP2015214734A (ja) * | 2014-05-13 | 2015-12-03 | 丸祥電器株式会社 | 極細炭素繊維を含有する球状複合銅微粒子およびその製造方法 |
| US9285192B2 (en) | 2009-11-06 | 2016-03-15 | Bourque Industries | Ballistic strike plate and assembly |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100932974B1 (ko) * | 2003-04-08 | 2009-12-21 | 삼성에스디아이 주식회사 | 전자 방출용 카본계 복합입자의 제조방법 |
| KR101448341B1 (ko) * | 2012-03-19 | 2014-10-07 | 제이엑스 닛코 닛세키 킨조쿠 가부시키가이샤 | 전기연의 제조 방법 |
| CN105556617B (zh) * | 2013-08-01 | 2018-08-24 | 积水化学工业株式会社 | 传导性填料及其制造方法、以及传导性糊剂及其制造方法 |
| WO2015133474A1 (ja) | 2014-03-05 | 2015-09-11 | 積水化学工業株式会社 | 伝導性フィラー、伝導性フィラーの製造方法及び伝導性ペースト |
| GB201706783D0 (en) * | 2017-04-28 | 2017-06-14 | Cambridge Entpr Ltd | Composite layers, methods for their manufacture and uses thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001214291A (ja) * | 2000-01-31 | 2001-08-07 | Sumitomo Metal Mining Co Ltd | 電解銅粉の製造方法 |
| JP2002263496A (ja) * | 2001-03-13 | 2002-09-17 | Honda Motor Co Ltd | 触媒組成物、その製造方法及びカーボンナノファイバーの製造方法 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3994785A (en) * | 1975-01-09 | 1976-11-30 | Rippere Ralph E | Electrolytic methods for production of high density copper powder |
| US4246057A (en) * | 1977-02-16 | 1981-01-20 | Uop Inc. | Heat transfer surface and method for producing such surface |
| US4465741A (en) * | 1980-07-31 | 1984-08-14 | Sumitomo Chemical Company, Limited | Fiber-reinforced metal composite material |
| US4724051A (en) * | 1985-03-25 | 1988-02-09 | The Dow Chemical Company | Impure zinc powder, preparation thereof, and use as a selective reductant for pentachloropyridine |
| US4746412A (en) * | 1986-07-03 | 1988-05-24 | C. Uyemura & Co., Ltd. | Iron-phosphorus electroplating bath and electroplating method using same |
| EP0627502B1 (en) * | 1993-05-28 | 1999-08-11 | ENTHONE-OMI, Inc. | Electroplating method and apparatus |
| US5785837A (en) * | 1996-01-02 | 1998-07-28 | Midwest Research Institute | Preparation of transparent conductors ferroelectric memory materials and ferrites |
| US5733429A (en) * | 1996-09-10 | 1998-03-31 | Enthone-Omi, Inc. | Polyacrylic acid additives for copper electrorefining and electrowinning |
| US6250984B1 (en) * | 1999-01-25 | 2001-06-26 | Agere Systems Guardian Corp. | Article comprising enhanced nanotube emitter structure and process for fabricating article |
| US20040151886A1 (en) * | 2000-03-06 | 2004-08-05 | Bobsein Barrett Richard | Binder composition |
| US6346136B1 (en) * | 2000-03-31 | 2002-02-12 | Ping Chen | Process for forming metal nanoparticles and fibers |
| US6858173B2 (en) * | 2003-01-30 | 2005-02-22 | The Regents Of The University Of California | Nanocrystalline ceramic materials reinforced with single-wall carbon nanotubes |
-
2004
- 2004-02-13 WO PCT/JP2004/001599 patent/WO2004094700A1/ja not_active Ceased
- 2004-02-13 DE DE112004000296T patent/DE112004000296T5/de not_active Ceased
- 2004-02-13 JP JP2005505685A patent/JP4421556B2/ja not_active Expired - Fee Related
- 2004-02-13 US US10/545,708 patent/US20060065543A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001214291A (ja) * | 2000-01-31 | 2001-08-07 | Sumitomo Metal Mining Co Ltd | 電解銅粉の製造方法 |
| JP2002263496A (ja) * | 2001-03-13 | 2002-09-17 | Honda Motor Co Ltd | 触媒組成物、その製造方法及びカーボンナノファイバーの製造方法 |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1626110A3 (en) * | 2004-07-30 | 2008-02-06 | Shinano Kenshi Kabushiki Kaisha | Metallic particle and method of producing the same |
| JP2006054066A (ja) * | 2004-08-10 | 2006-02-23 | Toray Ind Inc | 導電性粒子および異方導電性材料用組成物 |
| WO2006043431A1 (ja) * | 2004-10-21 | 2006-04-27 | Shinano Kenshi Kabushiki Kaisha | 複合金属体及びその製造方法 |
| JP2006249484A (ja) * | 2005-03-09 | 2006-09-21 | Shinshu Univ | 金めっき液および金めっき方法 |
| JP2015057783A (ja) * | 2008-11-10 | 2015-03-26 | クライロン・グローバル・エルエルシー | 改善された物理的および電気的特性を有する固体組成物 |
| JP2011014650A (ja) * | 2009-06-30 | 2011-01-20 | Panasonic Electric Works Co Ltd | 電磁シールド性成形材料、電子部品用電磁シールド性成形品、建材用電磁シールド性成形品、及び電磁シールド性成形材料の製造方法 |
| JP2011058027A (ja) * | 2009-09-07 | 2011-03-24 | Fukuda Metal Foil & Powder Co Ltd | 電解銅粉の集合体及び該電解銅粉の製造方法 |
| US9285192B2 (en) | 2009-11-06 | 2016-03-15 | Bourque Industries | Ballistic strike plate and assembly |
| JP2015214734A (ja) * | 2014-05-13 | 2015-12-03 | 丸祥電器株式会社 | 極細炭素繊維を含有する球状複合銅微粒子およびその製造方法 |
| CN104674327A (zh) * | 2015-03-03 | 2015-06-03 | 北京汽车股份有限公司 | 复合镀层的制备方法及复合镀层 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4421556B2 (ja) | 2010-02-24 |
| DE112004000296T5 (de) | 2005-12-29 |
| JPWO2004094700A1 (ja) | 2006-07-13 |
| US20060065543A1 (en) | 2006-03-30 |
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