Special Issue
  • Study on the Interface and Thermal Conductivity of Aluminum Composites Reinforced Carbon Nanotube Sheets

  • Dae Young Kang*, Sook Young Moon*, Young Heon Kim**, Jun Yeon Hwang*†

  • *Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Jeonbuk, 55324, Republic of Korea
    ** Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, Daejeon 34134, Republic of Korea

  • 탄소나노튜브 시트를 이용한 알루미늄 복합재의 계면제어 및 열전도도 특성에 관한 연구

  • 강대영* · 문숙영* · 김영헌** · 황준연*†

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this study, the metal composite with a carbon nanotube sheet laminated on aluminum was manufactured using Spark Plasma Sintering (SPS), and the thermal conductivity and interface microstructure according to the direction were analyzed. Wettability was improved between aluminum and carbon nanotubes through surface treatment using oxygen plasma treatment, and it was confirmed that an oxygen functional group was formed on the surface of the carbon nanotube sheet. Thermal conductivity of the in-plane and through-plane of the manufactured metal composite was 201.7 W/mK and 149.19 W/mK respectively. The formation of an intermediate layer at the interface was confirmed through electron microscopy, which directly affects interfacial bonding strength and thermal conductivity enhancement.


본 연구에서는 방전 플라즈마 소결법을 이용하여 알루미늄에 탄소나노튜브 시트가 적층된 구조의 금속복합재를 제조하고, 방향에 따른 열전도도 및 계면의 미세구조를 분석하였다. 산소 플라즈마 처리를 통한 표면처리를 통해 알루미늄과 탄소나노튜브 사이에 젖음성을 향상시켰고, 분석을 통해 표면에 산소관능기가 형성된 것을 확인하였다. 제조된 금속복합재의 in-plane 열전도도는 201.7 W/mK, through-plane 열전도도는 149.19 W/mK의 결과를 얻었다. 전자현미경을 통해 계면에서 중간 층이 형성된 것을 확인하였고, 이러한 중간 층에 의해 계면 결합력과 열전도도가 증가한다.


Keywords: 알루미늄(Aluminum), 탄소나노튜브(Carbon nanotube), 방전플라즈마소결(Spark Plasma Sintering), 복합재Composite), 열전도도(Thermal conductivity)

This Article

Correspondence to

  • Jun Yeon Hwang

  • Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Jeonbuk, 55324, Republic of Korea

  • E-mail: junyeon.hwang@kist.re.kr