In this study, in order to increase surface ability of hardness and corrosion of magnesium alloy, anodizing and sealing with nano-diamond powder was conducted. A porous oxide layer on the magnesium alloy was successfully made at 85°C through anodizing. It was found to be significantly more difficult to make a porous oxide layer in the magnesium alloy compared to an aluminum alloy. The oxide layer made below 73°C by anodizing had no porous layer. The electrolyte used in this study is DOW 17 solution. The surface morphology of the magnesium oxide layer was investigated by a scanning electron microscope. The pores made by anodizing were sealed by water and aqueous nanodiamond powder respectively. The hardness and corrosion resistance of the magnesium alloy was increased by the anodizing and sealing treatment with nano-diamond powder.

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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.

Citations

Citations to this article as recorded by  

• Convergent Study of Aluminum Anodizing Method on the Thermal Fatigue
  Soo Young Kang
  Journal of the Korea Convergence Society.2016; 7(5): 169.     CrossRef
• Convergent Study of Texture on the Mechanical Properties of Electrodeposits
  Soo Young Kang
  Journal of the Korea Convergence Society.2016; 7(6): 193.     CrossRef
• Study on Improvement of Corrosion Resistance and Wear Resistance by Anodizing and Sealing Treatment with Nano-diamond Powder on aluminum
  Soo Young Kang, Dae Won Lee
  Journal of the Korean institute of surface engineering.2014; 47(3): 121.     CrossRef
• Study on Hardness and Corrosion Resistance of Magnesium by Anodizing and Sealing Treatment With Nano-diamond Powder
  Soo Young Kang, Dae Won Lee
  Journal of Korean Powder Metallurgy Institute.2014; 21(4): 260.     CrossRef