Abstract
The influence of Benzotriazole (BTA) and Tolyltriazole (TTA) as corrosion inhibitors for copper and brasses in 3% NaCl solutions have been investigated using infrared reflection-absorption spectroscopy, electrochemical polarization, corrosion tests and scanning electron microscopy. The protection afforded by pretreatment was tested in chloride solutions in the presence and absence of BTA and/or TTA. TTA by itself was found to be equally as effective as BTA. Combination of BTA and TTA resulted in significant improvement in the protection of these metals, particularly in acidic solutions. Contrary to BTA, TTA appeared to be an adsorption-type inhibitor for copper and brass.
