Artículos de revistas
Phosphate ions as inhibiting agents for copper corrosion in chlorinated tap water
Fecha
2013-02-12Registro en:
Yohai del Cerro, Lucía; Schreiner, W. H.; Vazquez, Marcela Vivian; Valcarce, María Beatriz; Phosphate ions as inhibiting agents for copper corrosion in chlorinated tap water; Elsevier Science Sa; Materials Chemistry And Physics; 139; 2-3; 12-2-2013; 817-824
0254-0584
Autor
Yohai del Cerro, Lucía
Schreiner, W. H.
Vazquez, Marcela Vivian
Valcarce, María Beatriz
Resumen
PO43- ions as corrosion inhibitor were investigated on copper in tap water in the presence of NaClO. The inhibitor was evaluated by electrochemical techniques and weight loss tests. Raman spectroscopy and X-ray photoelectron spectroscopy were used to study the passive layer. In inhibited tap water, the passive layer is thick and compact if NaClO is present. Weight-loss tests showed the inhibition of uniform dissolution and no pitting attack. When adding NaClO, Cu3(PO4)2 is incorporated to the passive film. Thus, phosphate ions are effective as inhibitors for copper in tap water, even when using high dosages of biocides.