Figure 3

Corrosion rate (A), inhibition efficiency (B) curves of API X120 steel in carbonated 3.5 wt% NaCl solution with 0, 25, 50, 75 and 100 µmol L−1 of PEI corrosion inhibitor at room temperature.
Corrosion rate (A), inhibition efficiency (B) curves of API X120 steel in carbonated 3.5 wt% NaCl solution with 0, 25, 50, 75 and 100 µmol L−1 of PEI corrosion inhibitor at room temperature.