화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of the Korean Industrial and Engineering Chemistry, Vol.17, No.4, 335-342, August, 2006
Export Citation
금속알루미늄의 전기화학적 성질과 응용
Electrochemical Properties of Metal Aluminum and Its Application
탁용석†, 강진욱, 최진섭1
  • 인하대학교 화학공학과
  • 1한국요업기술원 나노소재팀
Yongsug Tak†, Jinwook Kang, and Jinsub Choi1
  • Department of Chemical Engineering, Inha University, Incheon 402-751, Korea
  • 1Nanomaterials Application Division, Korea Institute of Ceramic Engineering and Technology, Seoul 153-801, Korea
E-mail:
초록
금속 알루미늄의 낮은 환원전위는 전기화학적 산화반응을 통하여 알루미늄과 그 표면에 존재하는 산화막의 구조 및 성질의 변화를 일으킨다. 산성용액에서 알루미늄을 전기화학적으로 에칭하여 표면적을 확대시키고 중성의 용액에서 알루미늄 표면에 치밀한 유전체 산화막을 형성시켜 커패시터의 전극으로 이용하고 있다. 저온의 산성용액에서는 양극산화시 나노크기의 다공층 산화막이 형성되며, 나노구조체의 템플레이트로 사용되고 있다. 이와같은 알루미늄의 전기화학적 특성은 알루미늄을 새로운 기능성을 가진 재료로 변화시킴으로서 다양한 분야에서 응용될 것으로 기대된다.
Metal aluminum, of which has a low standard reduction potential, participates in the electrochemical oxidation reaction and results in the structural change and accompanying property variation of aluminum and its oxide film. Aluminum was electrochemically etched in acid solution and the surface area was magnified by the formation of high density etch pits. Etched aluminum was covered with a compact and dense dielectric oxide film by anodization and applied to the capacitor electrode. Anodization of aluminum in acid solution at low temperature makes a nanoporous aluminum oxide layer which can be used for the fabrication template of nanostructural materials. Electrochemical characteristics of aluminum turn the metal aluminum into functional materials and it will bring the diverse applications of metal aluminum.
Keywords:aluminum;etching;anodization;pitting corrosion;capacitor
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