Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10666158 | Materials Letters | 2011 | 4 Pages |
Abstract
Zirconia-alumina layers, with a pores size of 40-300 nm, were fabricated via micro arc oxidation method for the first time. The layers were grown under alternative current in the electrolytes of ZrOCl2 salt. They consisted of α-Al2O3, γ-Al2O3, monoclinic ZrO2, tetragonal ZrO2. Increasing the voltage resulted in higher zirconium concentrations in the layers. A porous structure was obtained when the layers were grown under intermediate voltages. Microcracks were observed to appear when the applied voltage increased. Finally, a formation mechanism was proposed with emphasis on the chemical and the electrochemical foundations.
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Physical Sciences and Engineering
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Authors
V. Shoaei-Rad, M.R. Bayati, F. Golestani-Fard, H.R. Zargar, J. Javadpour,