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

Figure 19

Optical microscopic images for aluminum alloy AA2024-T3 (scale bars  =  25 μm). (a) Initial superhydrophobic Ce/silica-coated AA2024-T3 alloy. (b) Corrosion of superhydrophobic and Ce/silica-coated alloy after immersion in 0.05 M NaCl solution for 447 h. (c) Corrosion of bare, uncoated AA2024-T3 alloy after immersion in 0.05 M NaCl solution for 447 h.

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(b)

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