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

Table 7

Impedance parameters of Cu-Ni (90/10) alloy in seawater containing 10 ppm of inorganic sulphide at different immersion periods. (Temperature: 30°C).

Immersion period (h)	𝑅ct	(CPE)dl	𝑛1	𝑅film	(CPE)film	𝑛2
	(kΩ cm^2)	(𝜇F cm^−2)		(kΩ cm^2)	(𝜇F cm^−2)
1	0.500	93.02	0.62	0.001	106.5	0.52
3	0.512	104.2	0.64	0.002	111.2	0.58
6	0.661	161.6	0.64	0.002	174.5	0.60
24	0.871	200.2	0.64	0.002	246.7	0.63
48	0.992	210.0	0.64	0.003	322.3	0.63