Anodic Fabrication of Ti-Nb-Zr-O Nanotube Arrays

Figure 2

Top and cross-section views of Ti-Nb-Zr-O nanotubes grown on Ti35Nb10Zr alloy substrate at different voltages with a constant frequency of 4000 Hz and duty cycle of 20% for 90 minutes, (a)-(b) 20 V, (c)-(d) 30 V, and (e)-(f) 40 V.

(a)

(b)

(c)

(d)

(e)

(f)