Study into formation of cobalt-containing peo-coatings on АК12М2МgN from a pyrophosphate electrolyte

Authors

DOI:

https://doi.org/10.15587/1729-4061.2017.118028

Keywords:

oxide coating, silumin, plasma-electrolytic oxidizing, pyrophosphate electrolyte, surface morphology

Abstract

We studied the process of formation of cobalt-containing oxide coatings using plasma-electrolytic oxidizing of the aluminum alloy AK12M2MgN in pyrophosphate electrolytes. It was established that the use of given type solutions contributes the homogenization of silumin surface and creates preconditions for the dopants incorporation to the growing oxide coating. It is shown that PEO parameters depend on the concentration ratio of cobalt sulfate and potassium pyrophosphate in a working solution. Based on the results of experimental study, we demonstrated the ways to control the structure and surface morphology of cobalt-containing PEO-coatings through the variation in the concentrations of electrolyte components.

The composition of a pyrophosphate electrolyte for the formation of oxide PEO-coatings with a high cobalt content and developed surface morphology is substantiated. It is noted that the obtained oxide coatings could be used in catalytic reactions in order to decompose natural and technogenic toxicants. 

Author Biographies

Ann Karakurkchi, National Technical University «Kharkiv Polytechnic Institute» Kyrpychova str., 2, Kharkiv, Ukraine, 61002

PhD, Head of Research Laboratory

Research Laboratory of Military Training Faculty

Mykola Sakhnenko, National Technical University «Kharkiv Polytechnic Institute» Kyrpychova str., 2, Kharkiv, Ukraine, 61002

Doctor of Technical Sciences, Professor, Head of Department

Department of Physical Chemistry

Maryna Ved, National Technical University «Kharkiv Polytechnic Institute» Kyrpychova str., 2, Kharkiv, Ukraine, 61002

Doctor of Technical Sciences, Professor

Department of General and Inorganic Chemistry

Andrii Horokhivskyi, National Technical University «Kharkiv Polytechnic Institute» Kyrpychova str., 2, Kharkiv, Ukraine, 61002

Researcher

Research Laboratory of Military Training Faculty

Alexander Galak, National Technical University «Kharkiv Polytechnic Institute» Kyrpychova str., 2, Kharkiv, Ukraine, 61002

PhD

Department of Physical Chemistry

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Published

2017-12-11

How to Cite

Karakurkchi, A., Sakhnenko, M., Ved, M., Horokhivskyi, A., & Galak, A. (2017). Study into formation of cobalt-containing peo-coatings on АК12М2МgN from a pyrophosphate electrolyte. Eastern-European Journal of Enterprise Technologies, 6(12 (90), 19–27. https://doi.org/10.15587/1729-4061.2017.118028

Issue

Vol. 6 No. 12 (90) (2017): Materials Science

Section

Materials Science

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Copyright (c) 2017 Ann Karakurkchi, Mykola Sakhnenko, Maryna Ved, Andrii Horokhivskyi, Alexander Galak

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