抄録
The present paper reports on the formation of self-organized nanotube oxide layers on β-type Ti-29Nb-13Ta-4.6Zr alloy in (NH4)2SO4 containing a small amount of NH4F. Highly ordered nanotube layers can be formed on the alloy under a wide range of applied potentials. Initiation and self-organization of pores is a potential and time dependent process. Layers removed from the electrolyte in an early growth state consist of two different morphologies-an outer nanoporous structure and an underneath ordered nanotube layer. For extended anodization, the outer nanoporous layer is completely dissolved. Within subsequent growth stages multi-scale ordering of the nanotube arrays with two discrete geometries can be observed. The different stages and morphologies depend significantly on the anodizing potentials. Clearly - compared with anodic tubes on pure Ti - a much broader range of nanotube geometries i.e. "structural flexibility" can be achieved with the Ti-29Nb-13Ta-4.6Zr alloy.
本文言語 | English |
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ページ(範囲) | 94-101 |
ページ数 | 8 |
ジャーナル | Electrochimica Acta |
巻 | 52 |
号 | 1 |
DOI | |
出版ステータス | Published - 2006 10月 5 |
外部発表 | はい |
ASJC Scopus subject areas
- 化学工学(全般)
- 電気化学