PEO Coatings Modified with Halloysite Nanotubes: Composition, Properties, and Release Performance.

ABSTRACT: In this work, the properties of the coatings formed on the Mg-Mn-Ce alloy by plasma electrolytic oxidation (PEO) in electrolytes containing halloysite nanotubes (HNTs) were investigated. The incorporation of halloysite nanotubes into the PEO coatings improved their mechanical characteristics, increased thickness, and corrosion resistance. The studied layers reduced corrosion current density by more than two times in comparison with the base PEO layer without HNTs (from 1.1 × 10^-7 A/cm² to 4.9 × 10^-8 A/cm²). The presence of halloysite nanotubes and products of their dihydroxylation that were formed under the PEO conditions had a positive impact on the microhardness of the obtained layers (this parameter increased from 4.5 ± 0.4 GPa to 7.3 ± 0.5 GP

SUBMITTER: Imshinetskiy I 

PROVIDER: S-EPMC9820610 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature