Protective properties of superhydrophobic coatings on copper and steel obtained by electrochemical method
https://doi.org/10.31615/j.corros.prot.2021.99.1-1
Abstract
Superhydrophobic coatings are obtained by cathodic deposition of copper or nickel on a copper plate with treatment with an ethanol solution of highest carboxylic acids with a long hydrocarbon radical simultaneously or sequentially. They are characterized by a contact angle of water wetting of the order of 155...160°.These coatings protect the copper substrate from corrosion in conditions of 100% humidity for 100...180 days, while maintaining the contact angle within 152…154°. There is no mass loss. The influence of the reversal of the current during electrolysis on the value of the contact angle of wetting is investigated. SEM images of superhydrophobic coatings are presented, indicating multilevel roughness. Superhydrophobic coating on carbon steel is obtained by cathodic deposition of nickel and subsequent surface treatment in an ethanol solution of myristic acid and annealing at 60° for two hours. The influence of the duration of electrolysis on the value of the contact angle of wetting is estimated. Its value is in the range of 151…154°. Exposure of a coated steel plate for 50 days in conditions of 100% humidity is characterized by the absence of weight loss and maintaining the contact angle up to 154°.
About the Authors
L. E. Tsygankov
All-Russian Scientific Research Institute of Use of Machinery and Oil Products in agriculture; Derzhavin State University; Tambov State Technical University
Russian Federation
Russian Federation
Liudmila E. Tsygankova, Doctor of Chemistry, Professor,
Head of Department of Chemistry
28, Novo-Rubezhni st., Tambov
33, Internatsyonalnaya st., Tambov
106, Sovetskaya st., Tambov
A. A. Uryadnikov
All-Russian Scientific Research Institute of Use of Machinery and Oil Products in agriculture; Derzhavin State University
Russian Federation
Russian Federation
Alexander A. Uryadnikov, Ph.D. in Chemistry, associate
Professor
28, Novo-Rubezhni st., Tambov
33, Internatsyonalnaya st., Tambov
A. V. Dorokhov
All-Russian Scientific Research Institute of Use of Machinery and Oil Products in agriculture
Russian Federation
Russian Federation
Andrei V. Dorokhov, Ph.D. in Chemistry, researcher
28, Novo-Rubezhni st., Tambov
N. V. Shel
Tambov State Technical University
Russian Federation
Russian Federation
Natalia V. Shel, Doctor of Chemistry, Professor of «Chemical Technology» Department
106, Sovetskaya st., Tambov
A. N. Dorokhova
Derzhavin State University
Russian Federation
Russian Federation
Anastasiya N. Dorokhova, postgraduate student
33, Internatsyonalnaya st., Tambov
N. A. Kur’yato
All-Russian Scientific Research Institute of Use of Machinery and Oil Products in agriculture
Russian Federation
Russian Federation
Nikolai A. Kur’yato, junior scientist
28, Novo-Rubezhni st., Tambov
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Review
For citations:
Tsygankov L.E., Uryadnikov A.A., Dorokhov A.V., Shel N.V., Dorokhova A.N., Kur’yato N.A. Protective properties of superhydrophobic coatings on copper and steel obtained by electrochemical method. Theory and Practice of Corrosion Protection. 2021;26(1):7-16. (In Russ.) https://doi.org/10.31615/j.corros.prot.2021.99.1-1
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