| Autor: |
Rozhkova, Natatlia N., Kovalchuk, Anna A., Rozhkov, Sergey S., Frycz, Marcin, Romanyuk, Aleksandra S., Komarov, Aleksandr I., Komarova, Valentina I. |
| Zdroj: |
AIP Conference Proceedings; 2024, Vol. 3183 Issue 1, p1-10, 10p |
| Abstrakt: |
The structural and physico-mechanical characteristics of ceramic coatings produced on aluminum alloys during microarc oxidation (MAO) were studied with the introduction of shungite carbon nanoparticles (ShC) in electrolyte at the stage of coating formation. It was established that graphene-based ShC nanoparticles with multilevel structural organization intensify microplasma processes, affect the structural phase state, lead to an increase in coating thickness, corundum content, and an increase in microhardness and antifriction properties. In the formed coatings, structural transformations of ShC nanoparticles are observed, analyzed by Raman scattering and synchronous thermal analysis: graphene and graphite structures are distinguished. Hardening and structuring of coatings are determined by the ability of ShC nanoparticles to structural rearrangements and self-assembling. The predominant carbon phase in the coatings is two-dimensional graphene carbon. Graphene fragments and stacks in the basic structure prevail in polar media (water, electrolyte) and on contact with conductive surfaces. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
