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

Table 3

Potentiodynamical polarization parameters for the corrosion of 1018 carbon steel in 0.5 M H₂SO₄ at 40°C.

𝐶inh; (ppm)	𝐸corr; (mV)	𝑖corr; (mA/cm^2)	𝐸pas; (mV)	𝑖pas; (mA/cm^2)	I.E.; (%)
0	−480	0.8	650	133	—
100	−470	0.46	660	122	8
200	−500	0.2	640	110	17
400	−490	0.17	610	85	36
600	−483	0.12	630	77	42
800	−483	0.1	650	72	46
1000	−480	0.08	450	45	66