Surface properties of plasma electrolytic oxidation coating

A new review gives a comprehensive overview on the surface properties of plasma electrolytic oxidation coating modified by polymeric materials.

Lab results are shown on a graphically displayed tablet.
Excited state energies and lifetimes of the thioxanthone derivatives have been determined. Image source: mcmurryjulie - Pixabay (symbol image).

Owing to the inherent properties of polymeric materials, such as excellent compressive strength, tensile strength, impact strength, coupled with adequate flexural strength, rigidity and Young modulus, together with high dimensional stability, optimization of surface properties of metals with polymers has been the focus of extensive research in the past decade.

Progress and challenges

A new review takes magnesium as a base material and focuses on discussing the advantages, shortcomings, and applicability of a variety of polymer coatings to modify the surface properties of anodic films produced by plasma electrolytic oxidation (PEO). The various methods used to fabricate polymer/ceramic composites are outlined, focusing on dip coating, electrophoretic deposition and spin coating.

Based on the experimental data and industrial applications, every polymer has been discussed with its unique structure and its distinctive impact on the surface characteristics of ceramics coatings by taking into accounts the following aspects, application site, biocompatibility, biodegradation rate, and anti-corrosion properties. Finally, current progress and challenges in the field of PEO/polymer composites are summarised to identify knowledge gaps and future research directions that help to achieve multifunctional materials suitable for massive-scale industries.

The rewiew has been published in Progress in Organic Coatings, Volume 171, October 2022.

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