Synthesis of 1,2,3-Triazole Derivatives and Its Evaluation as Corrosion Inhibitors for Carbon Steel

Table 8

Impedance data obtained from Nyquist diagram of carbon steel in 1.0 mol L^–1 HCl solution without and with inhibitors at different concentrations.

Inhibitor	Inhibitor Concentration						Efficiency
	(mg L^–1)	(V)	( cm^–2)	( cm^–2)	(Hz)	(F cm^–2)
Blank	0	–0.506	17.344	3.599	199.53	45.99	–
1	250	–0.504	145.12	3.881	39.81	27.55	88
	500	–0.514	261.85	3.928	19.95	30.46	93
	750	–0.505	475.14	4.233	7.94	42.17	96
	1000	–0.500	560.42	3.646	7.94	35.75	97
2	250	–0.505	282.00	3.739	12.59	44.83	94
	500	–0.509	313.41	3.295	12.59	40.34	94
	750	–0.505	426.92	2.762	7.94	46.93	96
	1000	–0.505	714.21	3.677	6.31	35.32	98