KR970025799A - Manufacturing method of silver powder - Google Patents

Manufacturing method of silver powder Download PDF

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Publication number
KR970025799A
KR970025799A KR1019950039324A KR19950039324A KR970025799A KR 970025799 A KR970025799 A KR 970025799A KR 1019950039324 A KR1019950039324 A KR 1019950039324A KR 19950039324 A KR19950039324 A KR 19950039324A KR 970025799 A KR970025799 A KR 970025799A
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KR
South Korea
Prior art keywords
silver powder
powder
particle size
producing
silver
Prior art date
Application number
KR1019950039324A
Other languages
Korean (ko)
Other versions
KR0181572B1 (en
Inventor
문현성
이재용
김관수
Original Assignee
김화중
희성금속공업 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 김화중, 희성금속공업 주식회사 filed Critical 김화중
Priority to KR1019950039324A priority Critical patent/KR0181572B1/en
Publication of KR970025799A publication Critical patent/KR970025799A/en
Application granted granted Critical
Publication of KR0181572B1 publication Critical patent/KR0181572B1/en

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Classifications

    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
    • 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
    • B22F1/05—Metallic powder characterised by the size or surface area of the particles
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
    • B22F2009/245—Reduction reaction in an Ionic Liquid [IL]
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/25—Noble metals, i.e. Ag Au, Ir, Os, Pd, Pt, Rh, Ru
    • B22F2301/255—Silver or gold
    • 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
    • B22F2304/00—Physical aspects of the powder
    • B22F2304/10—Micron size particles, i.e. above 1 micrometer up to 500 micrometer

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

본 발명은 은과 타 금속과의 소결합금시 사용되는 은 분말의 제조기술에 관한 것으로서 특히 유동성 및 혼합성이 우수한 은 분말을 제조하는 제조공정시의 화학반응조건에 관한 것이다. 본 발명은 은분말 제조공정 중 화학 반응 조건을 정확히 명시하여 일정크기의 분말을 얻어내고, 개미산처리공법으로 입자도를 성장시켜 유동도 및 혼합성을 향상시키고, 알칼리의 양을 줄이고 환원제로 사용되는 포르말린을 첨가하여 최종액을 산성으로 만듬으로써 유동도 및 혼합성이 우수하게 되는 은분말제조공정을 제공하고 있다. 본 발명에 따르면 반응조건을 화학양론적으로 조절하여 최종반응의 pH를 알칼리로 유지하여 평균입도 0.3∼2μm인 분말을 제조하고 이 분말에 개미산을 처리하여 입자의 크기를 3∼8μm으로 성장시키는 방법과, 반응조건을 화학양론적으로 조절하여 최종반응의 pH를 알칼리로 유지하여 평균입도 0.3∼2μm인 분말을 제조하는 방법을 사용하여 은 분말의 유동도 및 혼합성을 증대시키고 있다.The present invention relates to the production technology of silver powder used in the small bonds of silver and other metals, and more particularly to the chemical reaction conditions in the manufacturing process for producing silver powder with excellent flowability and mixing properties. The present invention obtains a powder of a certain size by accurately specifying the chemical reaction conditions in the silver powder manufacturing process, by growing the particle size by the formic acid treatment method to improve the flow and mixing properties, reducing the amount of alkali and used as a reducing agent It is added to make the final solution acidic to provide a silver powder manufacturing process that is excellent in flowability and mixing properties. According to the present invention, by adjusting the reaction conditions stoichiometrically, maintaining a pH of the final reaction as an alkali to prepare a powder having an average particle size of 0.3 to 2 μm and treating the powder with formic acid to grow the particle size to 3 to 8 μm. The flow and mixing properties of the silver powder are increased by using a method of producing a powder having an average particle size of 0.3 to 2 μm by controlling the reaction conditions stoichiometrically and maintaining the pH of the final reaction as an alkali.

Description

은 분말의 제조방법Manufacturing method of silver powder

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명의 제1실시예에 따른 은 분말의 제조공정을 단계적으로 도시한 도면,2 is a view showing step by step a manufacturing process of silver powder according to the first embodiment of the present invention,

제3도는 본 발명의 제2실시예에 따른 은 분말의 제조공정을 단계적으로 도시한 도면.3 is a view showing step by step the production of silver powder according to a second embodiment of the present invention.

Claims (2)

질산은 수용액을 알칼리 용액으로 중화하여 침전을 형성시키고 환원제로 환원시키는 은 분말의 제조방법에 있어서, 화학양론적으로 알칼리 용액의 양과 환원제의 양을 조절하여 최종반응의 pH를 알칼리(pH 10이상)로 유지함으로써 평균입도가 0.3~2μm인 은 분말을 제조하는 방법과, 상기 은 분말에 개미산을 처리하여 입자의 크기를 3~8μm으로 성장시키는 방법과, 를 포함하는 것을 특징으로 하는 소결할금융 은 분말 제조방법.In the method for producing silver powder, which neutralizes an aqueous solution of silver nitrate with an alkaline solution to form a precipitate and reduces it with a reducing agent, in which the final reaction pH is adjusted to alkali (pH 10 or more) by controlling the amount of the alkaline solution and the amount of the reducing agent. A method of producing a silver powder having an average particle size of 0.3 to 2 μm by maintaining the same, a method of treating formic acid on the silver powder to grow the size of the particles to 3 to 8 μm, and a sintered silver powder comprising: Manufacturing method. 질산은 수용액을 알칼리 용액으로 중화하여 침전을 형성시키고 환원제로 환원시키는 은 분말의 제조방법에 있어서, 화학양론적으로 알칼리 용액의 양과 환원제의 양을 조절하여 최종반응의 pH를 산성으로 유지하고 이 환경에서 침적함으로써 평균입도가 3∼8μm인 은 분말을 제조하는 것을 특징으로 하는 소결할금융 은 분말의 제조방법.A method for producing silver powder in which silver nitrate is neutralized with an alkaline solution to form a precipitate and reduced with a reducing agent, which stoichiometrically controls the amount of the alkaline solution and the amount of the reducing agent to maintain the pH of the final reaction in an acidic environment. A method for producing a sintered pulverized silver powder, characterized by producing silver powder having an average particle size of 3 to 8 m by depositing. ※ 참고사항:최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950039324A 1995-11-02 1995-11-02 Method of manufacturing silver powder KR0181572B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950039324A KR0181572B1 (en) 1995-11-02 1995-11-02 Method of manufacturing silver powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950039324A KR0181572B1 (en) 1995-11-02 1995-11-02 Method of manufacturing silver powder

Publications (2)

Publication Number Publication Date
KR970025799A true KR970025799A (en) 1997-06-24
KR0181572B1 KR0181572B1 (en) 1999-04-01

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ID=19432704

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950039324A KR0181572B1 (en) 1995-11-02 1995-11-02 Method of manufacturing silver powder

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020106120A1 (en) * 2018-11-23 2020-05-28 엘에스니꼬동제련 주식회사 Method for preparing monodispersed silver powder

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100551979B1 (en) * 2002-03-16 2006-02-20 (주)나눅스 Method for preparing high concentration silver colloid
KR100473478B1 (en) * 2002-11-20 2005-03-11 (주)나눅스 Silver colloid and preparation method thereof
KR100490678B1 (en) * 2002-11-29 2005-05-24 (주)창성 Method for manufacturing nano-scale nickel powders by wet reducing process
KR100490668B1 (en) * 2002-11-29 2005-05-24 (주)창성 Method for manufacturing nano-scale silver powders by wet reducing process
KR100765192B1 (en) * 2006-05-08 2007-10-09 주식회사 엔피케이 Synthesis of organic silver solution
KR100713241B1 (en) * 2006-06-28 2007-05-02 주식회사 씨에라인더스트리 Method of manufacturing silver powder by chemical reduction
KR101800605B1 (en) 2015-09-30 2017-11-23 엘에스니꼬동제련 주식회사 The manufacturing method of silver powder
KR102033542B1 (en) 2017-04-28 2019-10-17 대주전자재료 주식회사 Silver particle containing inner void and method of manufacture thereof
KR102033545B1 (en) 2017-06-05 2019-10-17 대주전자재료 주식회사 Silver particle and method of manufacture thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020106120A1 (en) * 2018-11-23 2020-05-28 엘에스니꼬동제련 주식회사 Method for preparing monodispersed silver powder

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Publication number Publication date
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