XPS and FT-IR Characterization of Selected Synthetic Corrosion Products of Zinc Expected in Neutral Environment Containing Chloride Ions

ZnO, Zn(OH)(2), Zn-5(OH)(8)Cl-2 center dot H2O, ZnCO3, and Zn-5(CO3) (2)(OH)(6) synthetic powders were prepared by chemical or solid-state method. Their crystalline phase structure, thermal behavior, and morphology were examined. Characteristic infrared absorbance bands were estimated by means of FT-IR ATR spectroscopy. X-ray photoelectron spectroscopy (XPS) allowed to calculate the modified Auger parameters (alpha') thereof to 2010.2, 2009.3, 2009.4, 2009.7, and 2009.8 eV, respectively for ZnO, Zn(OH)(2), Zn-5(OH)(8)Cl-2 center dot H2O, ZnCO3, and Zn-5(CO3)(2)(OH)(6). Finally, comparison of surface composition may be crucial to evaluation of the unknown experimental spectra of corrosion products formed on the surface of zinc alloy coatings exposed in NaCl solution.