2014
DOI: 10.1590/s1517-70762014000200005
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Niobium pentoxide coating replacing zinc phosphate coating

Abstract: A new coating made of niobium pentoxide, obtained through the sol-gel process, was developed for the carbon steel (SAE 1010). The corrosion protection provided by this coating was evaluated through electrochemical tests such as: open circuit potential, electrochemical impedance spectroscopy and anodic potentiodynamic polarization in NaCl 0,5 mol L -1 solution. The morphology and composition of the coatings were analyzed using scanning electronic microscopy, energy dispersive spectroscopy and X-ray diffractions… Show more

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Cited by 2 publications
(1 citation statement)
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“…Under higher magnification, a needle-like crystal structure was identified, as shown in Figure 3. Similar crystals were observed in the literature for a Nb 2 O 5 coating in carbon steel prepared by the Pechini method (Rodrigues et al , 2014) and for niobium oxide deposits generated after immersion in NaOH and H 2 SO 4 solutions (Chukwuike et al , 2021). The presence of the crystals on the material surface broadens the potential applications of the coating.…”
Section: Resultssupporting
confidence: 85%
“…Under higher magnification, a needle-like crystal structure was identified, as shown in Figure 3. Similar crystals were observed in the literature for a Nb 2 O 5 coating in carbon steel prepared by the Pechini method (Rodrigues et al , 2014) and for niobium oxide deposits generated after immersion in NaOH and H 2 SO 4 solutions (Chukwuike et al , 2021). The presence of the crystals on the material surface broadens the potential applications of the coating.…”
Section: Resultssupporting
confidence: 85%