On the Stability of ZrO2 + TiO2 Coatings on Titanium Formed by Plasma Electrolytic Oxidation in a Chlorine-Containing Medium

The regularities of the effect of the duration of coatings' galvanostatic formation in Zr(SO 4 ) 2 electrolyte on their composition, structure, surface contact angle with water, and the time of emergence of electrostimulated pitting when samples are in contact with an aqueous NaCl solution have...

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Bibliographic Details
Published in:Protection of metals and physical chemistry of surfaces 2020, Vol.56 (2), p.369-373
Main Authors: Malyshev, I. V., Rudnev, V. S.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Chlorine
Coatings
Composition
Contact angle
Corrosion and Coatings
Corrosion prevention
Electric contacts
Electric discharges
Electrolytes
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials
Materials Science
Metallic Materials
New Substances
Oxidation
Titanium
Titanium dioxide
Tribology
Zirconium dioxide
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Summary:The regularities of the effect of the duration of coatings' galvanostatic formation in Zr(SO 4 ) 2 electrolyte on their composition, structure, surface contact angle with water, and the time of emergence of electrostimulated pitting when samples are in contact with an aqueous NaCl solution have been studied. It has been shown that coatings formed on titanium in the range of transition from the sparkling stage to that of more powerful microarc electric discharges are relevant for anticorrosive properties. The interrelation between the anticorrosive properties of PEO coatings and the stages of their growth may be of general character in PEO treatment of valve metals and alloys of different nature in electrolytes with varying compositions.
ISSN:2070-2051
2070-206X
DOI:10.1134/S2070205120020161