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http://dx.doi.org/10.4191/kcers.2011.48.6.625

Formation of Nb2O5 Microcone Structure in NaF Electrolyte by Anodization  

Jeong, Bong-Yong (Future Convergence Ceramic Division, Korea Institute of Ceramic Engineering and Technology)
Jung, Eun-Hye (Department of Chemical Engineering, Inha University)
Publication Information
Journal of the Korean Ceramic Society / v.48, no.6, 2011 , pp. 625-629 More about this Journal
Abstract
In this study, we show that by anodization of Nb in NaF electrolytes microcone niobium oxide layers can be formed under a range of experimental conditions. It is found that a single NaF electrolyte leads to the formation of microcones. At 1 M NaF, 40 V, 1 h, well-ordered microcones were generated on Nb discs. XRD results show that the initially formed anodic oxide is amorphous, but an amorphous to crystalline transition occurs during anodization. For the formation of favorable microcones, it is considered that proper parameters such as electrolyte concentration, voltage, anodizing time are necessary according to the kind of electrolytes.
Keywords
Anodization; Niobium oxide; Microcone structure; NaF electrolyte;
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