Flash-PEO coatings loaded with corrosion inhibitors on AA2024

Olmo, R. del; Mohedano, Marta; Visser, Peter; Matykina, E.; Arrabal, R.

doi:10.1016/j.surfcoat.2020.126317

Cited by 26 publications

(10 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…higher impedance modulus show a diffusion tail at low frequencies. It is important to note that the comparison of the impedance modulus (|Z|) at low frequency response (0.01 Hz) is a common tool for ranking the corrosion performance of coatings [27] , although it has some limitations as it does not always match the corrosion performance obtained by other methods such as salt spray testing.…”

Section: Inhibitor Screeningmentioning

confidence: 99%

LDH conversion films for active protection of AZ31 Mg alloy

Pillado

Mingo

Olmo

et al. 2023

Journal of Magnesium and Alloys

Self Cite

View full text Add to dashboard Cite

Section: Inhibitor Screeningmentioning

confidence: 99%

LDH conversion films for active protection of AZ31 Mg alloy

Pillado

Mingo

Olmo

et al. 2023

Journal of Magnesium and Alloys

Self Cite

View full text Add to dashboard Cite

“…Moreover, the combination of the surface topography, microstructure and composition of PEO coatings promotes early cell-to-surface interactions [17]. In the last few years, with the aim being to reduce treatment costs and minimize the impact on the mechanical properties of the substrate (i.e., fatigue), short PEO treatments (<120 s), termed flash-PEO, have been developed [18].…”

Section: Introductionmentioning

confidence: 99%

Combination of Electron Beam Surface Structuring and Plasma Electrolytic Oxidation for Advanced Surface Modification of Ti6Al4V Alloy

et al. 2022

View full text Add to dashboard Cite

The objective of this work is to study for the first time the combination of electron beam (EB) surface structuring and plasma electrolytic oxidation (PEO) with the aim of providing a multiscale topography and bioactive surface to the Ti6Al4V alloy for biomedical applications. Ca and P-containing coatings were produced via 45 s PEO treatments over multi-scale EB surface topographies. The coatings morphology and composition were characterized by a means of scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The effect on the previous EB topography was evaluated by means of a 3D optical profilometry and electrochemical response via potentiodynamic polarization tests. In general, the PEO process, morphology, composition and growth rate of the coatings were almost identical, irrespective of the topography treated. Minimal local differences were found in terms of morphology, and the growth rate were related to specific topographical features. Nevertheless, all the PEO-coated substrates presented essentially the same corrosion resistance. Electrochemical tests revealed a localized crevice corrosion susceptibility of all the bare EB topographies, which was successfully prevented after the PEO treatment.

show abstract

“…While there are other possible technologies and configurations that could be used (e.g., chemical conversion coatings [8], sol-gel [9], or plasma electrolytic oxidation (PEO) coatings [10]), a typical corrosion protection scheme for aerospace applications consist of numerous layers: a clad layer, a porous anodic oxide film, an organic coating loaded with corrosion inhibitors, and an organic topcoat. This is schematically depicted in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

The Role of Anodising Parameters in the Performance of Bare and Coated Aerospace Anodic Oxide Films

et al. 2022

View full text Add to dashboard Cite

The anodising process parameters (voltage, temperature, and electrolyte) control the morphology and the chemical composition of the resulting anodic oxide film by altering the balance between oxide growth and oxide dissolution reactions. The porosity of the oxide film is reduced by the addition of tartaric acid to a sulfuric acid electrolyte, while anodising at elevated temperatures enhances oxide dissolution, leading to wider pores and rougher surfaces. No significant changes in the oxide chemical composition as a function of anodising parameters was found; in particular, no tartrate incorporation took place. The resistance of uncoated anodic oxide films against aggressive media and galvanic stress as a function of anodising parameters has been studied by electrochemical methods. Anodising in a mixed tartaric and sulfuric acid electrolyte improves the resistance of the anodic oxide against galvanic stress and aggressive media in comparison to sulfuric acid anodising processes. However, the corrosion protection performance of the anodic oxide films in combination with a corrosion-inhibitor loaded organic coating is not governed by the blank oxide properties but by the adhesion-enhancing morphological features formed during anodising at elevated temperatures at the oxide/coating interface.

show abstract

Flash-PEO coatings loaded with corrosion inhibitors on AA2024

Cited by 26 publications

References 50 publications

LDH conversion films for active protection of AZ31 Mg alloy

LDH conversion films for active protection of AZ31 Mg alloy

Combination of Electron Beam Surface Structuring and Plasma Electrolytic Oxidation for Advanced Surface Modification of Ti6Al4V Alloy

The Role of Anodising Parameters in the Performance of Bare and Coated Aerospace Anodic Oxide Films

Contact Info

Product

Resources

About