Effect of Manganese Content on the Fabrication of Porous Anodic Alumina

Figure 1

Microstructure of substrates prior subjecting to anodizing (a) high-purity aluminium, aluminium with (b) 0.5 wt% Mn, (c) 1.0 wt% Mn, (d) 1.5 wt% Mn, and (e) 2.0 wt% Mn, respectively.

(a)

(b)

(c)

(d)

(e)