Electrochemical Impedance Spectroscopy and Potentiodynamic Polarization Analysis on Anticorrosive Activity of Thiophene-2-Carbaldehyde Derivative in Acid Medium

Table 3

Potentiodynamic polarization parameters of MS specimens in 1 M HCl at 28°C in the absence and presence of T2CTRY.

Tafel data					Linear polarization data
Conc.; (mM)	𝐸corr (mV/SCE)	𝐼corr (𝜇A/cm^2)	𝑏𝑎 (mV/dec)	−𝑏𝑐 (mV/dec)	𝜂pol%	𝑅𝑝  (ohm)	𝜂𝑅𝑝%
0	−465	726	72	106	—	21.8	—
0.2	−479	141	79	97	80.58	113.5	80.79
0.4	−476	94.6	87	83	86.96	194	88.76
0.6	−485	53.6	78	85	92.62	278	92.16
0.8	−476	42.4	72	83	94.16	313	93.04
1.0	−495	34.1	89	87	95.30	459	95.25