Sweet Corrosion Inhibition on API 5L-B Pipeline Steel

Table 3

Parameters obtained from EIS in the absence and presence of inhibitors at 25°C.

Comp.	Conc.,; M	𝑅𝑆,; Ω cm^2	𝑌×10^−4,; 𝜇Ω^−1 sn cm^−2	𝑛	𝑅CT,; Ω cm^2	𝐶dl×10^−4,; 𝜇Fcm^−2	𝜃	IE, %
Blank	0	9.81	9.93	0.644	203.2	4.10
Itraconazole	1	10.85	8.20	0.674	210.1	3.50	0.033	3.3
	5	11.92	8.21	0.669	224.9	3.56	0.096	9.6
	10	11.38	7.49	0.684	245.7	3.43	0.173	17.3
	15	10.80	6.86	0.698	260.8	3.26	0.221	22.1
Fluconazole	5	10.89	8.64	0.676	212.7	3.84	0.045	4.5
	10	13.49	8.95	0.661	227.6	3.96	0.107	10.7
	15	9.56	6.90	0.689	249.0	3.12	0.184	18.4
	20	10.17	7.59	0.682	256.5	3.54	0.208	20.8