September 2010

Application of statistical technique to the analysis of passivation of Al - Zn alloy systems in brine

  The high demand for light metals as engineering materials lies in their high strength - to - weight ratio with good corrosion resistance in diverse environments. Passivation phenomena in these materials especially Al - based binary alloys have well been documented. However, the present study which aims at using model equations to investigate the passivation trend in various compositions of duplex Al - Zn...

Author(s): E. Chinedu Ekuma, E. Ndubuisi Idenyi and O. Israel Owate

September 2010

Electrochemical behaviour of some copper alloys in sodium chloride solutions containing different inorganic additives

  The corrosion behavior of Cu-Fe and Cu-Fe-Al was studied in NaCl solutions without and with different concentrations of some inorganic additives, Na2MoO4, K2Cr2O7, and KIO3. The measuring techniques used were, open-circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The potentiodynamic polarization measurements indicated that the corrosion current, Icorr, o;f...

Author(s): H. E. El-Feky, N. H. Helal and M. R. Negem