Controlled Release from Core-Shell Nanoporous Silica Particles for Corrosion Inhibition of Aluminum Alloys

Figure 18

Optical microscopic images for aluminum alloy AA2024-T3 (scale bars  =  25 μm). (a) Original uncorroded alloy. (b) Alloy corrosion after immersion in 0.05 M NaCl solution for 100 h. (c) Alloy corrosion after immersion in 0.05 M NaCl and Ce/silica particle solution for 100 h.

(a)

(b)

(c)