KR100863602B1 - Producing method of ceramic-metal composite powder - Google Patents

Producing method of ceramic-metal composite powder Download PDF

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KR100863602B1
KR100863602B1 KR1020070081435A KR20070081435A KR100863602B1 KR 100863602 B1 KR100863602 B1 KR 100863602B1 KR 1020070081435 A KR1020070081435 A KR 1020070081435A KR 20070081435 A KR20070081435 A KR 20070081435A KR 100863602 B1 KR100863602 B1 KR 100863602B1
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ceramic
slurry
powder
metal
metal composite
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Korean (ko)
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김진천
김지순
권영순
김철희
박은주
강태훈
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울산대학교 산학협력단
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/74—Ceramic products containing macroscopic reinforcing agents containing shaped metallic materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62625—Wet mixtures
    • C04B35/6264—Mixing media, e.g. organic solvents
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
    • C04B35/62655—Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/40—Metallic constituents or additives not added as binding phase
    • C04B2235/405—Iron group metals
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5454—Particle size related information expressed by the size of the particles or aggregates thereof nanometer sized, i.e. below 100 nm

Abstract

A manufacturing method of ceramic-metal composite powder is provided to prevent the oxidation of metal powder and the aggregation of the powder in order to obtain nano-sized metal powder that is compositely mixed with ceramic in a homogeneous form by employing pulsed wire evaporation in fluid. A manufacturing method of ceramic-metal composite powder comprises steps of: preparing slurry(S110) by mixing nano-sized ceramic powder with fluid; subjecting the prepared slurry to pulsed wire evaporation in fluid to form ceramic-metal composite powder(S120); drying the fluid used for the preparation of the slurry(S130); and recovering the ceramic-metal composite powder(S140). Alternatively, the manufacturing method comprises a step of coating the powder which is not dried sufficiently in the drying step with the vaporized slurry of the fluid in 1-90vol.%(S150) instead of recovering the dried ceramic-metal composite powder. In the process of preparing slurry, at least one polymer dispersant selected from a group consisting of polyvinylpyrrolidone, polyethylenimine, polydiallyldimethylammonium, TWIN 80, polyethylene glycol condensates, fatty acid monoglycerine ester, fatty acid polyglycol ester and fatty acid alkanol amide, or at least one low-melting point organic compound binder selected from a group consisting of acryl, stearic acid and wax is added to the mixture. Further, the pulsed wire is made of metal selected from Co, Fe, Cu, Zn, Al, Ti, W, Mg, Ni, brass and bronze.

Description

세라믹-금속 복합분말 제조방법{Producing method of ceramic-metal composite powder}Producing method of ceramic-metal composite powder

본 발명은 세라믹-금속 복합분말 제조방법에 관한 것으로서, 보다 상세하게는 금속 분말의 산화를 근본적으로 억제할 수 있고, 금속 분말이 응집되는 것을 방지하여 나노미터(㎚) 수준의 금속 분말을 제조할 수 있으며, 세라믹과 금속 분말이 보다 균일하게 복합화되도록 할 수 있도록 한 세라믹-금속 복합분말 제조방법에 관한 것이다. The present invention relates to a method for producing a ceramic-metal composite powder, and more particularly, to fundamentally inhibit oxidation of a metal powder and to prevent agglomeration of the metal powder to prepare a nanometer (nm) level metal powder. The present invention relates to a method for preparing a ceramic-metal composite powder, which enables the ceramic and metal powder to be more uniformly compounded.

세라믹-금속 복합분말은 고강도 및 기능성 특성을 보이는 금속산화물/질화물/탄화물의 세라믹 소재와 인성 또는 연성 증가 및 기능성 향상을 위해 첨가하는 금속기지상으로 이루어진 소재이다. Ceramic-metal composite powder is composed of a ceramic material of metal oxide / nitride / carbide showing high strength and functional properties, and a metal base material added for increasing toughness or ductility and improving functionality.

최근 세라믹과 금속 분말의 크기를 100nm 이하로 하고자 하는 연구들이 지속적으로 이루어지고 있다. 예를 들어, 전이금속계인 철(Fe)과 아연(Zn)을 동시에 이산화티타늄 결정구조 내에 미량 도핑함으로써, 우수한 광소재 특성의 발현이 가능하게 되어 자외선 영역에서의 고특성 광소재로 응용이 가능하게 된다. 금속 분말이 분산된 도료는 내스크래치성, 자정능력, 내마모성, 광택도, 내식성, 내수성의 무기 기능성 도료로 기능이 월등하게 향상된다.Recently, researches to make the size of ceramic and metal powder 100 nm or less have been continuously conducted. For example, by simultaneously doping a small amount of transition metal-based iron (Fe) and zinc (Zn) in the crystal structure of titanium dioxide, it is possible to express excellent optical material properties and to be applied as a high-performance optical material in the ultraviolet region do. The paints in which the metal powder is dispersed are greatly improved in function as scratch-resistant, self-cleaning ability, abrasion resistance, gloss, corrosion resistance and water-resistant inorganic functional paints.

세라믹-금속 복합분말을 제조하기 위한 연구에서는, 세라믹 분말에 금속 분말을 볼밀 등을 이용하여 기계적으로 혼합하는 공정이나, 졸-겔 공정 등의 화학적 습식 방법으로 세라믹에 나노금속 분말을 침전 혹은 석출하는 공정을 이용한다. In the research for producing ceramic-metal composite powder, nanometal powders are precipitated or precipitated on ceramics by chemically mixing metal powders into ceramic powders using a ball mill or the like, or by chemical wet methods such as a sol-gel process. Use the process.

세라믹-금속 복합분말을 제조하는 데, 기계적 혼합 방법을 사용할 경우에는 금속 분말의 균일한 혼합이 용이하지 않고, 화학적 습식방법은 금속 분말의 석출과정이 복잡할 뿐만 아니라 불순물의 제어가 용이하지 않은 문제점이 있다.In the production of ceramic-metal composite powder, when the mechanical mixing method is used, the uniform mixing of the metal powder is not easy, and the chemical wet method is not only complicated in the precipitation process of the metal powder but also difficult to control the impurities. There is this.

본 발명은 상기의 문제점을 해결하기 위하여 창출된 것으로서, 금속 분말의 산화를 근본적으로 억제할 수 있고, 금속 분말이 응집되는 것을 방지하여 나노미터(㎚) 수준의 금속 분말을 제조할 수 있으며, 세라믹과 금속 분말이 보다 균일하게 복합화되도록 할 수 있도록 한 세라믹-금속 복합분말 제조방법을 제공하는데 그 목적이 있다. The present invention has been made to solve the above problems, it is possible to fundamentally inhibit the oxidation of the metal powder, to prevent the agglomeration of the metal powder can be prepared in the nanometer (nm) level metal powder, ceramic It is an object of the present invention to provide a method for producing a ceramic-metal composite powder that allows the metal powder and the metal powder to be more uniformly compounded.

상기의 목적을 달성하기 위하여,In order to achieve the above object,

본 발명은 세라믹 분말과 유체를 혼합하여 슬러리를 제조하는 슬러리제조단계; 상기 슬러리 내에서 금속선을 전기적으로 폭발시키는 전기폭발단계; 및 상기 슬러리에 함유된 유체를 건조시키는 건조단계를 포함하는 것을 특징으로 하는 세라믹-금속 복합분말 제조방법을 제공한다.The present invention is a slurry manufacturing step of preparing a slurry by mixing a ceramic powder and a fluid; An electric explosion step of electrically exploding the metal wire in the slurry; And it provides a ceramic-metal composite powder manufacturing method comprising a drying step of drying the fluid contained in the slurry.

여기서, 상기 슬러리제조단계는 물, 과산화수소수, 에탄올, 에탄올글리콜, 글리세린, 젤라틴, 엔진오일, 증류수, 벤젠, 톨루엔, 식염수, 식용류, 석유 및 휘발류로 이루어진 군에서 선택된 어느 하나 이상의 유체로 구성된 액체 내에 슬러리를 제조한다.Here, the slurry production step is a liquid consisting of at least one fluid selected from the group consisting of water, hydrogen peroxide water, ethanol, ethanol glycol, glycerin, gelatin, engine oil, distilled water, benzene, toluene, saline, edible oil, petroleum and volatiles Prepare a slurry.

특히, PVP(polyvinylpyrrolidone), PEI(polyethylenimine), PDADMAC(polydiallydimethylammonium chloride), TWIN 80, 폴리에틸렌글리콜 축합형, 지방산 모노글리세린에스테르, 지방산 폴리글리콜에스테르 및 지방산 알칸올아 미드 등 시판되는 고분자로 이루어진 군에서 선택된 어느 하나 이상의 고분자 분산제; 또는 아크릴, 스테아린산(stearic acid), 왁스(wax) 등 저융점 유기화합물로 이루어진 군에서 선택된 어느 하나 이상의 결합제를 첨가하여 슬러리를 제조하는 것이 바람직하다.In particular, any one selected from the group consisting of commercially available polymers such as polyvinylpyrrolidone (PVP), polyethylenimine (PEI), polydiallydimethylammonium chloride (PDADMAC), TWIN 80, polyethylene glycol condensation type, fatty acid monoglycerin ester, fatty acid polyglycol ester and fatty alkanolamide One or more polymeric dispersants; Alternatively, the slurry may be prepared by adding one or more binders selected from the group consisting of low melting point organic compounds such as acrylic, stearic acid, and wax.

또한, 상기 세라믹은 세라믹 분말과 세라믹 화이버를 포함할 수 있다.In addition, the ceramic may include ceramic powder and ceramic fiber.

아울러, 상기 금속선은 코발트(Co), 철(Fe), 구리(Cu), 아연(Zn), 알루미늄(Al), 티타늄(Ti), 텅스텐(W), 마그네슘(Mg), 니켈(Ni), 황동 및 청동으로 이루어진 군에서 선택된 어느 하나 이상의 금속으로 이루어진 것이 바람직하다. In addition, the metal wire is cobalt (Co), iron (Fe), copper (Cu), zinc (Zn), aluminum (Al), titanium (Ti), tungsten (W), magnesium (Mg), nickel (Ni), It is preferably made of at least one metal selected from the group consisting of brass and bronze.

상술한 바와 같이, 본 발명의 세라믹-금속 복합분말 제조방법에 의하면, As described above, according to the method for producing a ceramic-metal composite powder of the present invention,

첫째, 유체 내에서 전기선 폭발법을 이용하여 금속 분말을 제조함으로써, 기존 금속 분말의 제조공정 시 문제가 되는 금속 분말의 산화를 근본적으로 억제할 수 있고, 금속 분말이 응집되는 것을 방지하여 나노미터(㎚) 수준의 금속 분말을 제조할 수 있으며, 세라믹과 금속 분말이 보다 균일하게 복합화되도록 할 수 있다.First, by manufacturing the metal powder in the fluid by using the electric wire explosion method, it is possible to fundamentally suppress the oxidation of the metal powder, which is a problem in the manufacturing process of the existing metal powder, and to prevent the agglomeration of the metal powder nanometer ( Nm) level metal powder can be prepared, and the ceramic and metal powder can be more uniformly complexed.

둘째, 단상의 금속 분말 뿐만 아니라, 2성분계 이상의 합금 분말을 매우 경제적으로 제조할 수 있다.Second, not only single-phase metal powder, but also alloy powder of two or more components can be produced very economically.

셋째, 제조된 세라믹-금속 복합분말로부터 고강도 소재의 개발과 페인팅 소재, 의료용 소재, 고촉매, 형광체 소재 등의 원료로 이용 가능하다.Third, it can be used as a raw material for the development of high-strength material and painting material, medical material, high catalyst, phosphor material from the manufactured ceramic-metal composite powder.

이하 첨부된 도면을 참조하면서 본 발명에 따른 바람직한 실시예를 상세히 설명하기로 한다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여, 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

따라서, 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 일실시예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.Therefore, the embodiments described in the specification and the drawings shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

이하, 도 1 내지 도 4를 참조하여 본 발명의 일실시예에 따른 세라믹-금속 복합분말 제조방법을 설명하도록 한다.Hereinafter, a ceramic-metal composite powder manufacturing method according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.

도 1은 본 발명의 일실시예에 따른 세라믹-금속 복합분말 제조방법을 나타낸 흐름도, 도 2는 본 발명의 일실시예에 따른 세라믹-금속 복합분말 제조방법에 사용되는 장치를 나타낸 사진, 도 3은 본 발명의 일실시예에 따른 세라믹-금속 복합분말 제조방법에서 전기폭발단계의 슬러리를 나타낸 상태도, 도 4는 본 발명의 일실시예에 따른 세라믹-금속 복합분말 제조방법에 따라 제조된 세라믹-금속 복합분말을 나타낸 개념도이다.1 is a flow chart showing a method of manufacturing a ceramic-metal composite powder according to an embodiment of the present invention, Figure 2 is a photograph showing the apparatus used in the method of manufacturing a ceramic-metal composite powder according to an embodiment of the present invention, Figure 3 Is a state diagram showing a slurry of the electrical explosion step in the ceramic-metal composite powder manufacturing method according to an embodiment of the present invention, Figure 4 is a ceramic manufactured according to the ceramic-metal composite powder manufacturing method according to an embodiment of the present invention -A conceptual diagram showing a metal composite powder.

본 발명의 일실시예에 따른 세라믹-금속 복합분말 제조방법은 슬러리제조단계(S110), 전기폭발단계(S120), 건조단계(S130) 및 회수단계(S140)를 포함한다.Ceramic-metal composite powder manufacturing method according to an embodiment of the present invention includes a slurry manufacturing step (S110), an electric explosion step (S120), drying step (S130) and recovery step (S140).

또한, 본 발명의 일실시예에 따른 세라믹-금속 복합분말 제조방법은 슬러리 제조단계(S110), 전기폭발단계(S120), 건조단계(S130) 및 코팅단계(S150)를 포함할 수도 있다.In addition, the ceramic-metal composite powder manufacturing method according to an embodiment of the present invention may include a slurry manufacturing step (S110), an electric explosion step (S120), a drying step (S130) and a coating step (S150).

상기 슬러리제조단계(S110)는 나노미터(㎚) 또는 마이크로미터(㎛) 수준의 세라믹 분말을 유체와 혼합하여 슬러리를 제조하는 단계이다. 본 발명의 일실시예에 따르면 알루미나(Al2O3), 산화지르코늄(Zr2O3), 산화티타늄(TiO2), 질화알루니늄(AlN), 탄화규소(SiC), 형광체 세라믹 분말을 이용할 수 있다. The slurry manufacturing step (S110) is a step of preparing a slurry by mixing the ceramic powder of the nanometer (nm) or micrometer (μm) level with the fluid. According to an embodiment of the present invention, alumina (Al 2 O 3 ), zirconium oxide (Zr 2 O 3 ), titanium oxide (TiO 2 ), aluminum nitride (AlN), silicon carbide (SiC), phosphor ceramic powder It is available.

여기서 유체는 물, 과산화수소수, 에탄올, 에탄올글리콜, 글리세린, 젤라틴, 엔진오일, 증류수, 벤젠, 톨루엔, 식염수, 식용류, 석유, 휘발류 등으로 이루어진 군에서 선택된 어느 하나 이상의 유체를 이용할 수 있다. Here, the fluid may be any one or more fluids selected from the group consisting of water, hydrogen peroxide, ethanol, ethanol glycol, glycerin, gelatin, engine oil, distilled water, benzene, toluene, saline, edible, petroleum, volatile.

또한, 세라믹 분말이 유체에서 잘 분산되도록 하기 위하여 분산제를 첨가할 수 있다. 여기서, 분산제로는 PVP(polyvinylpyrrolidone), PEI(polyethylenimine), PDADMAC(polydiallydimethylammonium chloride), TWIN 80, 폴리에틸렌글리콜 축합형, 지방산 모노글리세린에스테르, 지방산 폴리글리콜에스테르 및 지방산 알칸올아미드 등 시판되는 고분자로 이루어진 군에서 선택된 어느 하나 이상의 고분자 분산제를 이용할 수 있다. In addition, a dispersant may be added to allow the ceramic powder to disperse well in the fluid. Here, the dispersant is a group consisting of commercially available polymers such as polyvinylpyrrolidone (PVP), polyethylenimine (PEI), polydiallydimethylammonium chloride (PDADMAC), TWIN 80, polyethylene glycol condensation type, fatty acid monoglycerin ester, fatty acid polyglycol ester and fatty alkanolamide Any one or more polymer dispersants selected from may be used.

아울러, 후술할 전기폭발단계(S120)에서 방출되는 금속 분말과 상기 세라믹 분말의 결합력을 높이기 위하여 결합제를 첨가할 수 있으며, 여기서, 아크릴, 스테아린산(Stearic Acid), 왁스(wax) 등 저융점 유기화합물로 이루어진 군에서 선택된 어느 하나 이상의 결합제를 이용할 수 있다. In addition, a binder may be added to increase the bonding strength of the metal powder and the ceramic powder released in the electroexplosive step (S120) to be described later, wherein a low melting organic compound such as acryl, stearic acid, wax, etc. Any one or more binders selected from the group consisting of can be used.

상기 전기폭발단계(S120)는 상기 슬러리내에서 금속선에 전력을 공급하여 전기폭발되도록 하는 단계이다. 금속선에 전력을 공급하면, 금속선은 저항 발열에 의하여 용융, 방전, 기화 고장을 통한 폭발이 일어나게 되고, 이에 따라 금속의 분말화가 진행된다. The electroexplosion step (S120) is a step of supplying power to the metal wire in the slurry to be exploded. When power is supplied to the metal wires, the metal wires are exploded through melting, discharging, and vaporization failure due to resistance heating, and thus powdering of the metal proceeds.

본 발명의 일실시예에 따르면, 전기폭발단계(S120)는 0.5-20kV의 전력을 마이크로초(㎲)-수십 동안 공급하여 전기 폭발이 일어나도록 할 수 있다. According to one embodiment of the present invention, the electrical explosion step (S120) may supply an electric explosion of 0.5-20kV for microseconds (㎲) for several tens of seconds.

본 발명의 일실시예에 따른 전기폭발단계(S120)는 도 2와 같은 장치를 이용하여 실시한다. 여기서, 사용되는 금속선은 코발트(Co), 철(Fe), 구리(Cu), 아연(Zn), 알루미늄(Al), 티타늄(Ti), 텅스텐(W), 마그네슘(Mg), 니켈(Ni), 황동 및 청동으로 이루어진 군에서 선택된 어느 하나 이상의 금속으로 이루어진 것을 이용할 수 있다. Electric explosion step (S120) according to an embodiment of the present invention is carried out using the apparatus as shown in FIG. Here, the metal wire used is cobalt (Co), iron (Fe), copper (Cu), zinc (Zn), aluminum (Al), titanium (Ti), tungsten (W), magnesium (Mg), nickel (Ni) It may be used any one or more metal selected from the group consisting of, brass and bronze.

도 3을 참조하여 보다 자세히 설명하면, 슬러리제조단계(S110)에서 세라믹 분말(110)과 유체(130)를 혼합하여 제조된 슬러리 내에 금속선(120)이 위치되도록 하고, 금속선(120)에 전력을 공급하면, 금속선(120)으로부터 유체(130)내로 금속 분말(121)이 방출된다. Referring to FIG. 3, the metal wire 120 is positioned in the slurry prepared by mixing the ceramic powder 110 and the fluid 130 in the slurry manufacturing step (S110), and power is supplied to the metal wire 120. When supplied, the metal powder 121 is discharged from the metal wire 120 into the fluid 130.

예를 들어, 코발트로 이루어진 금속선을 사용한 경우, 코발트 금속 분말이 유체 내로 방출되며, 코발트 및 철을 포함하는 합금선의 금속선을 사용한 경우, 코발트 금속 분말과 철 금속 분말이 슬러리 내로 방출되어, 세라믹 분말과 결합하게 된다. For example, when a metal wire made of cobalt is used, cobalt metal powder is released into a fluid, and when a metal wire of an alloy wire containing cobalt and iron is used, cobalt metal powder and iron metal powder are released into a slurry, and the ceramic powder and Will be combined.

상기와 같은 전기폭발단계(S120)에서 형성된 세라믹-금속 복합분말의 형상을 도 4에 나타내었다. 도 4를 참조하면, 전기폭발단계(S120)에서 형성된 세라믹-금속 복합분말에서 세라믹 분말에 금속 분말이 균일하게 복합화되어 있는 것을 알 수 있다. 4 shows the shape of the ceramic-metal composite powder formed in the electric explosion step (S120) as described above. Referring to Figure 4, it can be seen that the metal powder is uniformly complexed with the ceramic powder in the ceramic-metal composite powder formed in the electroexplosion step (S120).

본 발명에 따르면, 상기와 같이 유체 내에서 전기폭발이 일어나도록 함으로써, 금속 분말이 성장하거나 산화되는 것을 방지할 수 있어, 금속선으로부터 나노미터(㎚) 크기의 금속 분말이 방출되도록 할 수 있는 것이다.According to the present invention, by causing the electrical explosion in the fluid as described above, it is possible to prevent the metal powder from growing or oxidizing, it is possible to release the nanometer (nm) size metal powder from the metal wire.

상기 건조단계(S130)는 슬러리제조단계(S110)에서 사용된 유체를 건조시키는 단계이다. 이러한 건조단계(S130)에서는 상기 유체가 기화하도록 유체의 증발온도 이상에서 가열하여 건조시키는 것이 가능하지만, 이에 한정된 것은 아니고 사용된 유체를 건조시키는 어떠한 방법도 가능하다. The drying step (S130) is a step of drying the fluid used in the slurry production step (S110). In this drying step (S130) it is possible to dry by heating above the evaporation temperature of the fluid to vaporize the fluid, but is not limited to this, any method of drying the used fluid is possible.

상기 회수단계(S140)는 상기 건조단계(S130)에서 유체를 건조시킨 다음 남아있는 세라믹-금속 복합분말을 회수하는 단계이다. 이렇게 제조된 세라믹-금속 복합분말로부터 고강도 소재의 개발과 페인팅 소재, 의료용 소재, 고촉매, 형광체 소재 등의 원료로 이용할 수 있다.The recovery step (S140) is a step of recovering the remaining ceramic-metal composite powder after drying the fluid in the drying step (S130). From the ceramic-metal composite powder thus prepared, it can be used as a raw material for the development of high-strength materials and for painting materials, medical materials, high catalysts, and phosphor materials.

상기 코팅단계(S150)는 상기 건조단계(S140)에서 유체가 완전히 건조되도록 하지 않고, 1-90 부피%의 유체가 기화된 상태의 슬러리를 테이프케스팅과 같은 공정을 이용하여 피처리물에 코팅되도록 할 수 있다.The coating step (S150) is not to completely dry the fluid in the drying step (S140), so that the fluid of the 1-90% by volume of the slurry in the vaporized state to be coated on the workpiece using a process such as tape casting can do.

이하, 도 5 및 도 6을 참조하여 본 발명의 다른 실시예에 따른 세라믹-금속 복합분말 제조방법을 설명하도록 한다.Hereinafter, a method of manufacturing a ceramic-metal composite powder according to another embodiment of the present invention will be described with reference to FIGS. 5 and 6.

도 5는 본 발명의 다른 실시예에 따른 세라믹-금속 복합분말 제조방법에서 전기폭발단계의 슬러리를 나타낸 상태도, 도 6은 본 발명의 다른 실시예에 따른 세라믹-금속 복합분말 제조방법에 따라 제조된 세라믹-금속 복합분말을 나타낸 개념도이다.Figure 5 is a state diagram showing the slurry of the electric explosion step in the ceramic-metal composite powder manufacturing method according to another embodiment of the present invention, Figure 6 is prepared according to the ceramic-metal composite powder manufacturing method according to another embodiment of the present invention Is a conceptual diagram showing a ceramic-metal composite powder.

본 발명의 다른 실시예에 따른 세라믹-금속 복합분말 제조방법은 세라믹 분말 대신 세라믹 화이버를 이용한 것을 제외하고는 상기 일실시예와 동일하게 슬러리제조단계, 전기폭발단계, 건조단계 및 회수단계로 수행할 수 있으며, 또한, 슬러리제조단계, 전기폭발단계, 건조단계 및 코팅단계로 수행할 수도 있다.Ceramic-metal composite powder manufacturing method according to another embodiment of the present invention can be carried out in the same manner as in the above-described slurry manufacturing step, electroexplosion step, drying step and recovery step except that ceramic fibers are used instead of ceramic powder. In addition, it may also be carried out in the slurry production step, electroexplosion step, drying step and coating step.

여기서, 상기 세라믹 화이버는 알루미나(Al2O3), 산화지르코늄(Zr2O3), 산화티타늄(TiO2), 질화알루니늄(AlN), 탄화규소(SiC), 형광체 세라믹 화이버를 이용할 수 있다. Here, the ceramic fiber may use alumina (Al 2 O 3 ), zirconium oxide (Zr 2 O 3 ), titanium oxide (TiO 2 ), aluminum nitride (AlN), silicon carbide (SiC), phosphor ceramic fiber have.

보다 상세하게는, 슬러리제조단계에서 세라믹 화이버(210)와 유체(230)를 혼합하여 제조된 슬러리 내에 금속선(220)이 위치되도록 하고, 금속선(220)에 전력을 공급하면, 금속선(220)으로부터 유체(230)내로 금속 분말(221)이 방출되어, 세라믹 화이버(210)와 복합화된다. More specifically, in the slurry manufacturing step, the metal wire 220 is positioned in the slurry manufactured by mixing the ceramic fiber 210 and the fluid 230, and when the electric power is supplied to the metal wire 220, the metal wire 220 is removed from the metal wire 220. The metal powder 221 is discharged into the fluid 230 and combined with the ceramic fiber 210.

이상과 같이, 본 발명은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술 사상과 아래에 기재될 청구범위의 균등 범위 내에서 다양한 수정 및 변형이 가능함은 물론이다. As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this, The person of ordinary skill in the art to which this invention belongs, Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

도 1은 본 발명의 일실시예에 따른 세라믹-금속 복합분말 제조방법을 나타낸 흐름도,1 is a flow chart showing a method of manufacturing a ceramic-metal composite powder according to one embodiment of the present invention;

도 2는 본 발명의 일실시예에 따른 세라믹-금속 복합분말 제조방법에 사용되는 장치를 나타낸 사진,Figure 2 is a photograph showing the device used in the ceramic-metal composite powder manufacturing method according to an embodiment of the present invention,

도 3은 본 발명의 일실시예에 따른 세라믹-금속 복합분말 제조방법에서 전기폭발단계의 슬러리를 나타낸 상태도,Figure 3 is a state diagram showing the slurry of the electro-explosion step in the ceramic-metal composite powder manufacturing method according to an embodiment of the present invention,

도 4는 본 발명의 일실시예에 따른 세라믹-금속 복합분말 제조방법에 따라 제조된 세라믹-금속 복합분말을 나타낸 개념도,Figure 4 is a conceptual diagram showing a ceramic-metal composite powder prepared according to the ceramic-metal composite powder manufacturing method according to an embodiment of the present invention,

도 5는 본 발명의 다른 실시예에 따른 세라믹-금속 복합분말 제조방법에서 전기폭발단계의 슬러리를 나타낸 상태도,Figure 5 is a state diagram showing the slurry of the electro-explosion step in the ceramic-metal composite powder manufacturing method according to another embodiment of the present invention,

도 6은 본 발명의 다른 실시예에 따른 세라믹-금속 복합분말 제조방법에 따라 제조된 세라믹-금속 복합분말을 나타낸 개념도이다.Figure 6 is a conceptual diagram showing a ceramic-metal composite powder prepared according to the ceramic-metal composite powder manufacturing method according to another embodiment of the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for main parts of the drawings>

110 : 세라믹 분말 120, 220 : 금속선110: ceramic powder 120, 220: metal wire

121, 221 : 금속 분말 130, 230 : 유체121, 221: metal powder 130, 230: fluid

210 : 세라믹 화이버210: Ceramic Fiber

Claims (4)

세라믹 분말과 유체를 혼합하여 슬러리를 제조하는 슬러리제조단계;A slurry manufacturing step of preparing a slurry by mixing a ceramic powder and a fluid; 상기 슬러리 내에서 금속선을 전기적으로 폭발시키는 전기폭발단계; 및An electric explosion step of electrically exploding the metal wire in the slurry; And 상기 슬러리에 함유된 유체를 건조시키는 건조단계를 포함하는 것을 특징으로 하는 세라믹-금속 복합분말 제조방법.Ceramic-metal composite powder manufacturing method comprising the step of drying the fluid contained in the slurry. 제 1항에 있어서,The method of claim 1, 상기 슬러리제조단계는 PVP(polyvinylpyrrolidone), PEI(polyethylenimine), PDADMAC(polydiallydimethylammonium chloride), TWIN 80, 폴리에틸렌글리콜 축합형, 지방산 모노글리세린에스테르, 지방산 폴리글리콜에스테르 및 지방산 알칸올아미드로 이루어진 군에서 선택된 어느 하나 이상의 고분자 분산제; 또는 아크릴, 스테아린산(stearic acid) 및 왁스(wax)로 이루어진 군에서 선택된 어느 하나 이상의 저융점 유기화합물인 결합제를 첨가하여 슬러리를 제조하는 것을 특징으로 하는 세라믹-금속 복합분말 제조방법.The slurry manufacturing step is any one selected from the group consisting of polyvinylpyrrolidone (PVP), polyethylenimine (PEI), polydiallydimethylammonium chloride (PDADMAC), TWIN 80, polyethylene glycol condensation type, fatty acid monoglycerin ester, fatty acid polyglycol ester and fatty acid alkanolamide The above polymer dispersant; Or acrylic, stearic acid (stearic acid) and wax (wax) is a ceramic-metal composite powder manufacturing method characterized in that the slurry is added by adding a binder which is at least one selected from the group consisting of low melting point organic compounds. 제 1항에 있어서,The method of claim 1, 상기 금속선은 코발트(Co), 철(Fe), 구리(Cu), 아연(Zn), 알루미늄(Al), 티타늄(Ti), 텅스텐(W), 마그네슘(Mg), 니켈(Ni), 황동 및 청동으로 이루어진 군에서 선택된 어느 하나 이상의 금속으로 이루어진 것을 특징으로 하는 세라믹-금속 복합 분말 제조방법. The metal wire is cobalt (Co), iron (Fe), copper (Cu), zinc (Zn), aluminum (Al), titanium (Ti), tungsten (W), magnesium (Mg), nickel (Ni), brass and Ceramic-metal composite powder manufacturing method, characterized in that made of at least one metal selected from the group consisting of bronze. 제 1항에 있어서,The method of claim 1, 상기 유체는 물, 과산화수소수, 에탄올, 에탄올글리콜, 글리세린, 젤라틴, 엔진오일, 증류수, 벤젠, 톨루엔, 식염수, 식용류, 석유 및 휘발류로 이루어진 군에서 선택된 어느 하나 이상의 유체를 이용하는 것을 특징으로 하는 세라믹-금속 복합분말 제조방법.The fluid is ceramic, characterized in that using any one or more fluids selected from the group consisting of water, hydrogen peroxide, ethanol, ethanol glycol, glycerin, gelatin, engine oil, distilled water, benzene, toluene, saline, edible, petroleum and volatiles Method for producing metal composite powder.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005153044A (en) 2003-11-21 2005-06-16 Honjo Yuri Sangyo Kagaku Gijutsu Shinko Zaidan Electric discharge machining method by insulation-coated electrode using powder mixed machining liquid and its device
KR20060100626A (en) * 2005-03-17 2006-09-21 한국원자력연구소 Method for coating of surface of nanoscale metal powder, composition for coating used therein and coated nanoscale metal powder prepared by the same
KR20060120716A (en) * 2005-05-23 2006-11-28 주식회사 엔씨메탈 The manufacturing method of metal-micro particles used of pulse-type energy
KR20070024041A (en) * 2005-08-26 2007-03-02 한국전기연구원 Method for manufacturing nanostructured powder by wire explosion in liqiud and device for manufacturing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005153044A (en) 2003-11-21 2005-06-16 Honjo Yuri Sangyo Kagaku Gijutsu Shinko Zaidan Electric discharge machining method by insulation-coated electrode using powder mixed machining liquid and its device
KR20060100626A (en) * 2005-03-17 2006-09-21 한국원자력연구소 Method for coating of surface of nanoscale metal powder, composition for coating used therein and coated nanoscale metal powder prepared by the same
KR20060120716A (en) * 2005-05-23 2006-11-28 주식회사 엔씨메탈 The manufacturing method of metal-micro particles used of pulse-type energy
KR20070024041A (en) * 2005-08-26 2007-03-02 한국전기연구원 Method for manufacturing nanostructured powder by wire explosion in liqiud and device for manufacturing the same

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