Electrochemical behavior of zinc in KOH media at high voltage: Micro-arc oxidation of zinc

Rocca, Emmanuel; Veys‐Renaux, Delphine; Guessoum, Khadoudj

doi:10.1016/j.jelechem.2015.06.021

Cited by 42 publications

(24 citation statements)

References 24 publications

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“…Although this process has been widely used for materials such as aluminum and its alloys [ 50 , 52 , 53 , 54 , 55 ], and magnesium and its alloys [ 56 , 57 , 58 , 59 , 60 ], the focus of more recent research on PEO coatings are oriented towards other valve metals like titanium [ 61 , 62 , 63 , 64 , 65 ], tantalum [ 66 , 67 , 68 , 69 , 70 ], zirconium [ 71 , 72 , 73 , 74 , 75 ], and niobium and all their different alloys [ 76 , 77 , 78 , 79 , 80 ]. Moreover, there has also been considerable work reported on zinc modification by the PEO process [ 81 , 82 , 83 , 84 ]. Apart from the above-mentioned materials, a few studies have been carried out upon other less common metals such as hafnium [ 85 ], beryllium [ 86 ], and brass [ 87 ].…”

Section: Introductionmentioning

confidence: 99%

Plasma Electrolytic Oxidation (PEO) Process—Processing, Properties, and Applications

et al. 2021

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Plasma electrolytic oxidation (PEO) is a novel surface treatment process to produce thick, dense metal oxide coatings, especially on light metals, primarily to improve their wear and corrosion resistance. The coating manufactured from the PEO process is relatively superior to normal anodic oxidation. It is widely employed in the fields of mechanical, petrochemical, and biomedical industries, to name a few. Several investigations have been carried out to study the coating performance developed through the PEO process in the past. This review attempts to summarize and explain some of the fundamental aspects of the PEO process, mechanism of coating formation, the processing conditions that impact the process, the main characteristics of the process, the microstructures evolved in the coating, the mechanical and tribological properties of the coating, and the influence of environmental conditions on the coating process. Recently, the PEO process has also been employed to produce nanocomposite coatings by incorporating nanoparticles in the electrolyte. This review also narrates some of the recent developments in the field of nanocomposite coatings with examples and their applications. Additionally, some of the applications of the PEO coatings have been demonstrated. Moreover, the significance of the PEO process, its current trends, and its scope of future work are highlighted.

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Section: Introductionmentioning

confidence: 99%

Plasma Electrolytic Oxidation (PEO) Process—Processing, Properties, and Applications

et al. 2021

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“…Tree types of anodic treatment. The methods of anodic treatment include electrolytic oxidation, [44] plasma electrolytic oxidation (PEO), [15,[45][46][47][48] and electrolytic etching. [49] The Electrolytic oxidation is known as anodizing and PEO is commonly referred to as micro-arc oxidation (DC-current) or iridizing (ACcurrent).…”

Section: Types Of Zinc Anodizingmentioning

confidence: 99%

Zinc Anodizing: Structural Diversity of Anodic Zinc Oxide Controlled by the Type of Electrolyte

et al. 2021

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Anodic zinc oxide (AZO) layers are attracting interdisciplinary research interest. Chemists, physicists and materials scientists are increasingly devoting attention to fundamental and application‐related research on these layers. Research work focuses on the application as semiconductor, corrosion protector, adhesion promoter, abrasion protector, or antibacterial surfaces. The structure and crystallinity essentially determine the properties of the AZO coatings. The type and concentration of the electrolyte, the applied current density or voltage as well as the duration time enable layer structures of structural variety. The article gives an overview of the different possibilities of anodic treatment, whereby the voltage and the current type are the main distinguishing criteria. Presented is the electrolytic oxidation (anodizing) and the electrolytic plasma oxidation (EPO). The electrolytic etching is also a process of anodic treatment. However, it does not produce AZO layers, but rather a degradation of the zinc layer. The review article shows the parameters used so far (electrolyte, current type, current density, voltage) and points out the influence on the formation of AZO structures in dependency to the used electrolyte.

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“…We have previously monitored, by in situ SE, the wet anodization of AZ91D Mg alloy in 3 M KOH medium 12 in order to enhance the understanding of the subsequent sparking regime initiation of the plasma electrolytic oxidation surface treatment, [13][14][15][16][17] beyond other established literature. [18][19][20] In this former study only the low voltage range i.e.…”

Section: Introductionmentioning

confidence: 99%

In situ spectroelectrochemical ellipsometry using super continuum white laser: Study of the anodization of magnesium alloy

Zimmer

Veys‐Renaux

Broch

et al. 2019

Journal of Vacuum Science &Amp; Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phen

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This work shows the interest to use a real time white laser-based ellipsometer to characterize complex electrolyte | electrode interface during electrochemical process in aqueous-based medium. This method is proposed to probe electrochemical interfaces which are usually not suitable to the full extent application of ellipsometry due to great disturbance of the reflected light flux provoked by gas evolution or roughness. In situ spectroelectrochemical ellipsometry combining such a visible super continuum fiber laser-band source was not previously reported to the best of the authors' knowledge. The setup was employed to monitor an electrochemical process whose the mechanism was previously incompletely described: the pre-spark anodization regime of plasma electrolytic oxidation process of Mg alloy AZ91D in 3 M KOH electrolyte. Above the anodization voltage of 4 V, the side water oxidation reaction induced light diffusion that reduces reflected light beam intensity. The process is here monitored in an extended

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Electrochemical behavior of zinc in KOH media at high voltage: Micro-arc oxidation of zinc

Cited by 42 publications

References 24 publications

Plasma Electrolytic Oxidation (PEO) Process—Processing, Properties, and Applications

Plasma Electrolytic Oxidation (PEO) Process—Processing, Properties, and Applications

Zinc Anodizing: Structural Diversity of Anodic Zinc Oxide Controlled by the Type of Electrolyte

In situ spectroelectrochemical ellipsometry using super continuum white laser: Study of the anodization of magnesium alloy

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