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http://dx.doi.org/10.4150/KPMI.2014.21.2.114

Study on Anodizing at Constant Current for Sealing Treatment of Nano-diamond Powder  

Kang, Soo Young (Department of Metallurgical & Material Engineering, Inha Technical College)
Lee, Dae Won (School of Materials Science and Engineering, Inha University)
Publication Information
Journal of Powder Materials / v.21, no.2, 2014 , pp. 114-118 More about this Journal
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.
Keywords
Anodizing; Nano-diamond; Powder; Sealing treatment; Constant current;
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