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

Table 11

Corrosion parameters of Cu-Ni (90/10) alloy obtained by potentiodynamic polarization studies in seawater in the presence of different concentrations of BTAH at 48-hour immersion period. (Temperature: 30°C).

Concentration of BTAH (mM)	𝐸corr (mV)	𝑖corr (𝜇A cm^−2)	𝛽𝑐 (mV dec^−1)	𝛽𝑎 (mV dec^−1)	IE (%)
0	−251.3	5.98	−115.0	68.2	—
0.82	−217.9	0.141	−95.0	124.0	97.64
1.67	−173.4	0.056	−60.5	81.8	99.06
2.50	−141.4	0.043	−85.2	103.0	99.28
3.33	−117.4	0.042	−70.4	83.7	99.30