Nanotube oxide coating on Ti–29Nb–13Ta–4.6Zr alloy prepared by self-organizing anodization

TiO2‐Nanoröhren: Synthese und Anwendungen

“…[379,186] Die Anodisierung von Legierungen ermöglicht also das Wachstum von gemischten anodischen Oxiden mit maßge-schneiderten und verbesserten Eigenschaften für einen weiten Bereich von Anwendungen. [190,192,224,308,378,379] Zum Beispiel zeigen auf TiNb und TiW hergestellte Nanoröhren-schichten nicht nur eine in einem weiten Bereich einstellbare Geometrie, [224,308,380] sondern auch stark verbesserte Interkalationseigenschaften. [308] Ebenfalls interessant ist, dass bei TiLegierungen bereits kleine Mengen des legierenden Elements die Eigenschaften drastisch beeinflussen können, während die einzigartige Nanoröhrenmorphologie vollstän-dig erhalten bleibt.…”

An electrochemical study on self-ordered nanoporous and nanotubular oxide on Ti–35Nb–5Ta–7Zr alloy for biomedical applications

“…Anodization of Ti and Zr resulted in distinctly separated hollow cylinder shaped nanotubes; however, porous oxide layers resulted in the case of Nb and Ta [13]. Nanotube growth has been reported on binary, ternary and quaternary titanium alloys such as TiNb [14], TiZr [15], Ti-6Al-7Nb [16], Ti-30Ta-XZr [17] and Ti-29Nb-13Ta-4Zr [18]. In the anodization of Ti, the dissolution is enhanced by fluoride containing electrolytes which form soluble complexes with titanium, resulting in pore or nanotube formation [13,19].…”

Self-organized double-wall oxide nanotube layers on glass-forming Ti-Zr-Si(-Nb) alloys

“…3 Furthermore, during the last years, it was shown that also other valve metals, such as Zr [15][16][17] and Nb [18,19], and several Ti binary [20][21][22], ternary [23,24] and quaternary alloys [25,26] can be anodized to nanotubular or nanoporous structures in fluoride containing electrolytes. The nanotubes grown on these alloys are similar to pure TiO 2 nanotubes.…”

“…They can show interesting properties depending on the anodization conditions. For instance, on some of these alloys, nanotubes with different scales were developed during anodization at a constant potential [22,23,25,26]. Moreover, in case of the binary Ti-35Zr alloy nanotubes with alternating compositions were observed when the fluoride content in the electrolyte was changed [20].…”

“…The only report on the nanotube growth on quarternary alloy having similar composition (Ti-Nb-Zr-Ta, Ref. [25]) does not contain any compositional aspect and related discussion. Finally, there is no report on the nanotube growth on Ti-Si alloys in ethylene glycol electrolytes, to the best of our knowledge.…”