Effect of Manganese Content on the Fabrication of Porous Anodic Alumina

Figure 4

Top view SEM images of anodized substrate of (a) high-purity aluminium, (b) Al-0.5 wt% Mn, (c) and (d) Al-1.0 wt% Mn, (e) Al-1.5 wt% Mn, and (f) Al-2.0 wt% Mn.

(a)

(b)

(c)

(d)

(e)

(f)