Formation of Protective Coatings on AMg3 Aluminum Alloy Using Fluoropolymer Nanopowder

Autor: Filonina, Valeriia S., Nadaraia, Konstantine V., Mashtalyar, Dmitry V., Gnedenkov, Andrey S., Imshinetsky, Igor M., German, Andrey P., Vyaliy, Igor E., Egorkin, Vladimir S., Minaev, Alexander N., Sinebryukhov, Sergey L., Gnedenkov, Sergey V.
Zdroj: Diffusion and Defect Data Part B: Solid State Phenomena; November 2020, Vol. 312 Issue: 1 p330-334, 5p
Abstrakt: The paper presents the results of a study of the protective properties of composite coatings obtained on AMg3 aluminum alloy by plasma electrolytic oxidation (PEO) and subsequent modification of formed oxide layer with superdispersed polytetrafluoroethylene (SPTFE) from a suspension based on isopropyl alcohol. The incorporation of fluoropolymer decreased the porosity of base PEO-coating more than one order of magnitude. Formed composite layers increased wearproof of the samples by more than two orders of magnitude in comparison with PEO-coating. Additionally, polymer-containing coatings has higher adhesion compared to substrate. Formed composite layers possess superhydrophobic properties: contact angle attains 155°.
Databáze: Supplemental Index