Mass transfer effect on corrosion inhibition process of copper-nickel alloy in hydrochloric acid by benzotriazole

الملخص EN

The corrosion inhibition of copper–nickel alloy by Benzotriazole (BTA) in 1.5 M HCl has been investigated by weight loss and polarization techniques at different temperatures.

Maximum value of inhibitor efficiency was 99.8% for BTA at 35 C and 0.1 M inhibitor concentration, while the lower value was 86.8% at 55 C and 0.02 M inhibitor concentration.

The non-linear region of the polarization curve near the corrosion potential can be discussed depending on data of over potential as a function of current densities.

These data can be analyzed by suggestion of a mathematical model to take into account the effect of mass transfer on activation process.-