Electrochemical and mechanical properties of the PEO coatings containing halloysite nanotubes

Authors

  • Igor’ M. Imshinetskiy Institute of Chemistry, FEB RAS, Vladivostok, Russia
  • Konstantine V. Nadaraia Institute of Chemistry, FEB RAS, Vladivostok, Russia
  • Dmitry V. Mashtalyar Institute of Chemistry, FEB RAS, Vladivostok, Russia
  • Victoria V. Kashepa Institute of Chemistry, FEB RAS, Vladivostok, Russia
  • Maria A. Piatkova Institute of Chemistry, FEB RAS, Vladivostok, Russia
  • Alina I. Pleshkova Institute of Chemistry, FEB RAS, Vladivostok, Russia
  • Sergey L. Sinebryukhov Institute of Chemistry, FEB RAS, Vladivostok, Russia
  • Sergey V. Gnedenkov Institute of Chemistry, FEB RAS, Vladivostok, Russia

Keywords:

plasma electrolytic oxidation, halloysite nanotubes, magnesium, corrosion protection

Abstract

The paper presents a study of the properties of oxide coatings formed on the MA8 magnesium alloy by the plasma electrolytic oxidation (PEO) method in electrolytes with halloysite nanotubes. The composition of the obtained coatings was determined by energy dispersive X-ray spectroscopy. The surface morphology of the PEO-layers was studied using scanning electron microscopy and laser profilometry. The electrochemical properties of the coatings were established by electrochemical impedance spectroscopy. The mechanical characteristics of the coatings were evaluated using the scratch test, as well as the values of microhardness and Young’s modulus. It was found that the coatings obtained in the electrolyte with a concentration of halloysite nanotubes of 20 g/l have the best anticorrosion properties. The value of impedance modulus for these coatings is 10 times greater compared to the base PEO-coating. The layers obtained in the electrolyte containing 30 g/l of halloysite nanotubes demonstrated the highest adhesive strength.

Author Biographies

Igor’ M. Imshinetskiy, Institute of Chemistry, FEB RAS, Vladivostok, Russia

Candidate of Sciences in Chemistry, Senior Research Officer

https://orcid.org/0000-0002-5055-1834

Konstantine V. Nadaraia, Institute of Chemistry, FEB RAS, Vladivostok, Russia

Candidate of Sciences in Chemistry, Senior Research Officer 

https://orcid.org/0000-0001-7835-2231

Dmitry V. Mashtalyar, Institute of Chemistry, FEB RAS, Vladivostok, Russia

Doctor of Sciences in Chemistry, Head of the Laboratory

https://orcid.org/0000-0001-9645-4936

Victoria V. Kashepa, Institute of Chemistry, FEB RAS, Vladivostok, Russia

Engineer of the 1st category

https://orcid.org/0000-0002-1610-095X

Maria A. Piatkova, Institute of Chemistry, FEB RAS, Vladivostok, Russia

Junior Researcher 

https://orcid.org/0000-0002-1208-0947

Alina I. Pleshkova, Institute of Chemistry, FEB RAS, Vladivostok, Russia

Junior Researcher

https://orcid.org/0000-0002-4601-3232

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

Corresponding Member of the Russian Academy of Sciences, Doctor of Sciences in Chemistry, Deputy Director

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

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

Corresponding Member of the Russian Academy of Sciences, Doctor of Sciences in Chemistry, Director

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

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Published

2023-09-06

How to Cite

Imshinetskiy И. М., Nadaraia К. В., Mashtalyar Д. В., Kashepa В. В., Piatkova М. А., Pleshkova А. И., Sinebryukhov С. Л., & Gnedenkov С. В. (2023). Electrochemical and mechanical properties of the PEO coatings containing halloysite nanotubes. Vestnik of the Far East Branch of the Russian Academy of Sciences, (1), 78–92. Retrieved from http://vestnikdvo.ru/index.php/vestnikdvo/article/view/1054

Issue

No. 1 (2023)

Section

Chemical sciences