Composite coatings with nanocontainers of layered double hydroxides impregnated with a corrosion inhibitor

Authors

  • Andrey S. Gnedenkov Institute of Chemistry, FEB RAS, Vladivostok, Russia
  • Aleksei D. Nomerovskii Institute of Chemistry, FEB RAS, Vladivostok, Russia
  • Valeriia S. Filonina Institute of Chemistry, FEB RAS, Vladivostok, Russia
  • Sergey L. Sinebryukhov Institute of Chemistry, FEB RAS, Vladivostok, Russia
  • Aleksandr N. Minaev Institute of Chemistry, FEB RAS, Vladivostok, Russia; Far Eastern Federal University, Vladivostok, Russia
  • Sergey V. Gnedenkov Institute of Chemistry, FEB RAS, Vladivostok, Russia

Keywords:

layered double hydroxide, self-healing coatings, magnesium alloys, electrochemistry

Abstract

The new method of the composite coating formation on the magnesium alloy is presented. These coatings include the oxide matrix, obtained using plasma electrolytic oxidation, modified with layered double hydroxides (LDH) loaded with a corrosion inhibitor. The formation of LDH consisting of hydrotalcite was confirmed by scanning electron microscopy and X-ray phase analysis. The electrochemical behavior of the material with protective coatings was established using the electrochemical impedance spectroscopy. The coating obtained using the synthesis of layered double hydroxide on a preliminarily formed PEO-layer with simultaneous intercalation of sodium oleate into the interlayer space (|Z|f=0.1 Hz = 1.24·106 Ω·cm2) has the best anticorrosive properties.

Author Biographies

Andrey S. Gnedenkov, Institute of Chemistry, FEB RAS, Vladivostok, Russia

Professor of RAS, Doctor of Sciences in Chemistry, Leading Researcher

http://orcid.org/0000-0002-9822-7849

Aleksei D. Nomerovskii, Institute of Chemistry, FEB RAS, Vladivostok, Russia

Junior Researcher

http://orcid.org/0000-0002-3118-5971

Valeriia S. Filonina, Institute of Chemistry, FEB RAS, Vladivostok, Russia

Junior Researcher 

http://orcid.org/0000-0002-9544-3597

Sergey L. Sinebryukhov, Institute of Chemistry, FEB RAS, Vladivostok, Russia

Corresponding Member of RAS, Doctor of Sciences in Chemistry, Associate Professor, Deputy Director

http://orcid.org/0000-0002-0963-0557

Aleksandr N. Minaev, Institute of Chemistry, FEB RAS, Vladivostok, Russia; Far Eastern Federal University, Vladivostok, Russia

Doctor of Sciences in Engineering, Professor, Chief Researcher 

http://orcid.org/0000-0001-7327-8685

Sergey V. Gnedenkov, Institute of Chemistry, FEB RAS, Vladivostok, Russia

Corresponding Member of RAS, Doctor of Sciences in Chemistry, Professor, Director 

http://orcid.org/0000-0003-1576-8680

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Published

2023-12-21

How to Cite

Gnedenkov А. С. ., Nomerovskii А. Д. ., Filonina В. С., Sinebryukhov С. Л., Minaev А. Н. ., & Gnedenkov С. В. . (2023). Composite coatings with nanocontainers of layered double hydroxides impregnated with a corrosion inhibitor. Vestnik of the Far East Branch of the Russian Academy of Sciences, (6), 65–75. Retrieved from http://www.vestnikdvo.ru/index.php/vestnikdvo/article/view/1144

Issue

No. 6 (2023)

Section

Physicochemistry of surface and nanosized systems