공업화학 (Applied Chemistry for Engineering)

  • 제35권2호
  • /
  • Pages.96-99
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  • 2024
  • /
  • 1225-0112(pISSN)
  • /
  • 2288-4505(eISSN)
한국공업화학회 (The Korean Society of Industrial and Engineering Chemistry)
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포름산 혼합 나노섬유 성장 구리마이크로입자를 이용한 구리 소결 페이스트 합성

Synthesis of Cu Sintering Paste Using Growth of Nanofiber on Cu Microparticles Mixed with Formic Acid

  • 전영운 (금오공과대학교 화학공학과) ;
  • 장지웅 (금오공과대학교 화학공학과)
  • Young Un Jeon (Department of Chemical Engineering, Kumoh National Institute of Technology) ;
  • Ji Woong Chang (Department of Chemical Engineering, Kumoh National Institute of Technology)
  • 투고 : 2024.02.16
  • 심사 : 2024.02.23
  • 발행 : 2024.04.10
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초록

구리 마이크로입자의 표면을 나노섬유형태의 포름산구리로 합성하고 포름산과 혼합하여 구리판을 접합할 수 있는 소결 페이스트를 합성하였다. 평균 10 ㎛의 구리 마이크로입자는 400 ℃ 이상에서 표면이 산화구리 나노섬유로 합성되고 포름산과 혼합하여 표면이 포름산화된 구리 마이크로입자가 합성된다. 포름산구리는 구리 벌크입자나 나노입자의 녹는점에 비해 낮은 온도인 210 ℃에서 구리로 분해되어 저온 소결로 구리판의 접합이 가능하다. 표면을 나노섬유 형태로 제어하여 표면적을 높여 포름산구리로의 반응속도, 응집에 필요한 접촉면적, 포름산구리의 분해속도 등이 증가하여 짧은 시간에 소결할 수 있도록 하였다.

A sintering paste for bonding copper plates was synthesized using Cu formate nanofibers on Cu microparticles, mixed with formic acid. Copper oxide nanofibers of 10 ㎛ grown at 400 ℃ on Cu microparticles on the surface were transformed into copper formate nanofibers through the mixing of formic acid. Compared to Cu bulk particles or nanoparticles, Cu formate on Cu microparticles decomposed into metallic Cu at a lower temperature of 210 ℃, facilitating the sintering of copper paste. The growth of nanofiber on Cu microparticles allowed for an increase in the reaction rate of formation to copper formate, aggregating surface area, and decomposition rate of copper formate, resulting in fast sintering.

키워드

과제정보

이 연구는 금오공과대학교 학술연구비로 지원되었음(2021)

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