Development, characterization and evaluation of TiO2/Nb5+ thin films with potential for corrosion prevention of AISI 304 steel in acid medium containing chloride ions

TiO 2 /Nb 5+ film was prepared and deposited on 304 steel and preventive its potential for corrosion was evaluated. The film was obtained by the sol–gel method, and its deposition by the dip-coating process has been followed by thermal treatment. XRD results with Rietveld refinement revealed the occ...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials science 2024-07, Vol.59 (27), p.12400-12417
Main Authors: Dias, Mércia Silva, Santos, Brenda Ghiane Pena, Machado, Anelise Andrade, Denadai, Ângelo Márcio Leite, Silva, Tiago Almeida, Rocco, Daniel Leandro, Santos, Mirela de Castro, Neto, Almir Silva, Oliveira, Fernando Castro de
Format: Article
Language:English
Subjects:
Acids
Anatase
Austenitic stainless steels
Characterization and Evaluation of Materials
Charge transfer
Chemical elements
Chemical Routes to Materials
Chemistry and Materials Science
Chloride ions
Classical Mechanics
Corrosion
Corrosion currents
Corrosion effects
Corrosion potential
Corrosion prevention
Corrosion resistance
Corrosion tests
Crystallography and Scattering Methods
Deposition
Dip coatings
Electrochemical impedance spectroscopy
Heat treatment
Immersion coating
Materials Science
Open circuit voltage
Polarization
Polyethylene glycol
Polymer Sciences
Sol-gel processes
Solid Mechanics
Stainless steel
Substrates
Thin films
Titanium
Titanium dioxide
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:TiO 2 /Nb 5+ film was prepared and deposited on 304 steel and preventive its potential for corrosion was evaluated. The film was obtained by the sol–gel method, and its deposition by the dip-coating process has been followed by thermal treatment. XRD results with Rietveld refinement revealed the occurrence of isomorphic substitution and predominance of anatase phase. Scanning electron microscopy confirmed the deposition of film on substrate. Corrosion properties of the TiO 2 /Nb 5+ layer was determined by open-circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Polarization curves showed a corrosion current of 129.72 μA for 304 steel without coating, which was larger than that observed for the samples recovered with TiO 2 /Nb 5+ films (9.00 μA). EIS revealed high charge transfer resistance in the molar ratio of 1 to 5% compared to the uncoated 304 steel, highlighting the protective effect of TiO 2 /Nb 5+ films against corrosion. Graphical abstract
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-024-09906-9