Vanadium films were prepared on zinc surfaces by using a solution containing vanadate. Corrosion protection properties of vanadium‐treated (V‐treated), chromium‐treated (Cr‐treated), and untreated zinc surfaces in contact with a 3.5 wt.% NaCl solution were studied using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and neutral salt spray (NSS) tests. According to these results, the V‐treated layer significantly improved the corrosion resistance of zinc surfaces. In comparison with the Cr‐treated layer, the V‐treated layer exhibited a better corrosion resistance. The composition of the V‐treated layer was studied using X‐ray photoelectron spectroscopy (XPS). XPS measurements indicated that the vanadium layer formed on zinc surfaces and the vanadium‐rich coating was a hydrated oxide with a composition of V 2 O 5 , VO 2 , and its hydrates such as V 2 O 5·n H 2 O and VO(OH) 2 .
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Zou et al. (2011) studied this question.
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