Abstract
The cathodic and anodic behaviour of copper in 30% ethylene glycol solution containing 100 ppm SO 4 2−, 100 ppm Cl − and 100 ppm HCO 3 have been studied at 60 ± 1° in the presence of different concentrations of 3-phenyl-1,2,4-triazol-5-one (PTR). The chemical nature of the complex formed between copper and PTR has been found to be a Cu(II) complex as determined by X-ray photoelectron spectroscopy. Polarization studies of the inhibition process suggest that the surface is largely covered by the complex.
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