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

Table 3

XPS surface composition of ZnO, Zn(OH)₂, Zn₅(OH)₈Cl₂·H₂O, ZnCO₃, and Zn₅(CO₃)₂(OH)₆ powders prepared by the precipitation method and shares of oxygen and zinc bonds.

Compound	The share of oxygen bonds with regard to total oxygen				Atomic composition (at.%)				The share of zinc in the oxygen bonds (at.%)
	O(^2−)	CO3	OH	H2O		O	Zn	Cl	–OH	‒O	‒CO3/‒Cl
ZnO	0.83	—	0.17	—	—	50.1	49.9	—	4.3	41.6	—
Zn(OH)2	0.10	—	0.90	—	—	64.2	35.8	—	28.9	6.4	—
Zn5(OH)8Cl2·H2O	0.11	—	0.87	0.02	—	54.8	35.2	10.0	23.8	6.0	5.0
ZnCO3	—	1.00	—	—	19.6	61.8	18.6	—	—	—	18.6
Zn5(OH)6(CO3)2	0.05	0.48	0.48	—	9.80	62.1	28.1	—	14.7	3.1	9.8