Sodium Citrate as an Environmentally Friendly Corrosion Inhibitor of Steel in a Neutral Environment

Figure 3

Polarization curves of 09G2S steel after 3 hours (a) and 24 hours (b) of exposure to a 0.1% NaCl solution with sodium citrate concentration of (1) 0 g/l, (2) 0.5 g/l, (3) 1.0 g/l, (4) 1.5 g/l, (5) 2.0 g/l, (6) 2.5 g/l, and (7) 3.0 g/l.

(a)

(b)