Corrosion Inhibition of Carbon Steel in 0.5 M H₂SO₄ by Phtalocyanine Blue

Figure 11

Micrograph of corroded 1018 carbon steel at (a) 25°C with 0 ppm, and 800 ppm of phtalocyanine blue at (b) 25, (c) 40 and (d) 60°C.

(a)

(b)

(c)

(d)