Corrosion Inhibition of Cu-Ni (90/10) Alloy in Seawater and Sulphide-Polluted Seawater Environments by 1,2,3-Benzotriazole

Table 5

Impedance parameters of Cu-Ni (90/10) alloy in seawater in the presence of 3.33 mM BTAH at different immersion periods. (Temperature: 30°C).

Immersion period (h)	𝑅ct	(CPE)dl	𝑛1	𝑅film	(CPE)film	𝑛2	IE (%)
	(kΩ cm^2)	(𝜇F cm^−2)		(kΩ cm^2)	(𝜇F cm^−2)
1	66.26	1.732	0.68	14.55	2.546	0.68	98.91
3	142.8	0.064	0.72	117.0	1.321	0.70	99.30
6	379.9	0.055	0.74	227.3	0.141	0.77	99.17
24	882.4	0.022	0.86	762.0	0.077	0.78	99.53
48	1046.0	0.034	0.94	557.8	0.060	0.78	99.55