Anticorrosive Effect of Halogenated Aniline Enaminoesters on Carbon Steel in HCl

Table 2

Electrochemical parameters obtained through EIS tests of AISI 1020 carbon steel in 1.0 mol L^-1 HCl medium at different concentration of enaminoesters.

Inhibitor	Conc. (Mol L^-1)	OCP/ag/AgCl (mV)	(Ω cm^2)	(Ω cm^2)			(μF cm^2)	(%)
Blank	—	—	51.63	6.47	—		537	—
F-EN	1.0 × 10^-5	-0.470	73.02	10.36	0.4015	0.99	28.54	40.2
	1.0 × 10^-4	-0.437	140.10	9.91	0.6583	0.96	25.20	65.8
	1.0 × 10^-3	-0.432	204.61	10.18	0.7936	0.99	19.96	79.4
	1.0 × 10^-2	-0.403	295.82	9.74	0.8478	0.97	15.81	85.4
Cl-EN	1.0 × 10^-5	-0.500	86.91	9.69	0.4583	0.88	29.48	46.2
	1.0 × 10^-4	-0.502	98.41	9.71	0.5204	0.98	27.16	52.2
	1.0 × 10^-3	-0.473	231.26	10.86	0.7476	0.89	25.76	74.8
	1.0 × 10^-2	-0.462	336.85	10.21	0.8311	0.90	20.29	83.1
Br-EN	1.0 × 10^-5	-0.485	93.45	11.35	0.5188	0.96	9.85	52.3
	1.0 × 10^-4	-0.486	109.02	11.29	0.5786	0.97	9.37	57.9
	1.0 × 10^-3	-0.477	127.76	10.88	0.6373	0.97	9.17	62.9
	1.0 × 10^-2	-0.459	228.38	11.59	0.7918	0.95	9.06	79.8
H-EN	1.0 × 10^-5	-0.452	61.43	9.92	0.4115	0.89	125.35	41.1
	1.0 × 10^-4	-0.479	93.33	10.83	0.5189	0.92	100.26	51.9
	1.0 × 10^-3	-0.466	176.86	9.05	0.7080	0.91	29.73	69.8
	1.0 × 10^-2	-0.457	233.86	11.04	0.7909	0.88	19.27	79.4