Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Study on Anodizing at Constant Current for Sealing Treatment of Nano-diamond Powder

나노 다이아몬드 분말 봉공처리 적용을 위한 정전류에서의 알루미늄 양극산화 제조 연구

  • Kang, Soo Young (Department of Metallurgical & Material Engineering, Inha Technical College) ;
  • Lee, Dae Won (School of Materials Science and Engineering, Inha University)
  • 강수영 (인하공업전문대학 금속재료과) ;
  • 이대원 (인하대학교 신소재공학부)
  • Received : 2014.03.04
  • Accepted : 2014.04.18
  • Published : 2014.04.28
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Abstract

In this study, an aluminum oxide layer for sealing treatment of nano-diamond powder was synthesized by anodizing under constant current. The produced pore size and oxide thickness were investigated using scanning electron microscopy. The pore size increased as the treatment time increased, current density increased, sulfuric acid concentration decreased, which is different from the results under constant voltage, due to a dissolution of the oxide layers. The oxide layer thickness by the anodizing increased as temperature, time, and current density increased. The results of this study can be applied to optimize the sealing treatment process of nano-diamond particles of 4-10 nm to enhance the resistances of corrosion and wear of the matrix.

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References

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