Tribocorrosion behavior of TiBxCy/a-C nanocomposite coating in strong oxidant disinfectant solutions

Corrosion and tribocorrosion studies of a TiBxCy/a-C coating deposited on AISI 316L steel have been performed in an aqueous solution of 0.26vol.% acetic, 0.16vol.% peracetic and 0.18vol.% hydrogen peroxide (commercial product Oxonia 1vol.%). The corrosion current density of the TiBxCy/a-C coating ra...

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Bibliographic Details
Published in:Surface & coatings technology 2015-02, Vol.263, p.78-85
Main Authors: Gracia-Escosa, E., García, I., Sánchez-López, J.C., Abad, M.D., Mariscal, A., Arenas, M.A., de Damborenea, J., Conde, A.
Format: Article
Language:English
Subjects:
Acid corrosion
Amorphous structures
Austenitic stainless steels
Coating
Corrosion
Friction
Heat resistant steels
Hydrogen peroxide
Oxidants
Oxidizing agents
Passive films
Polarization
Sputtered films
Steel
Steels
Tribology
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Summary:Corrosion and tribocorrosion studies of a TiBxCy/a-C coating deposited on AISI 316L steel have been performed in an aqueous solution of 0.26vol.% acetic, 0.16vol.% peracetic and 0.18vol.% hydrogen peroxide (commercial product Oxonia 1vol.%). The corrosion current density of the TiBxCy/a-C coating ranges on the same order as bare steel but with a significantly decreasing friction (0.1 vs. 0.6) and wear rate (~10 times lower). The compact microstructure of the coating hinders the access of the aggressive electrolyte to the substrate, preventing the onset of the corrosion attack, while maintaining an excellent tribological behavior in strong oxidant solutions. •TiBxCy/a-C coatings improve tribological and corrosion properties of AISI 316L steel.•Nanocomposite TiBxCy/a-C structured coatings prevent galvanic coupling with the steel.•Friction against alumina decreases from 0.6 to 0.1 and wears one order of magnitude compared to steel.•TiBxCy/a-C appears as an interesting protective coating for biomedical and food sectors.•TiBxCy/a-C has a longer pseudo passive stage than AISI 316L in strong oxidant solution.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2014.12.047