Characterization of metal oxide micro/nanoparticles elaborated by plasma electrolytic oxidation of aluminium and zirconium alloys

Martin, Julien; Haraux, P.; Ntomprougkidis, Vitalios; Migot, Sylvie; Bruyère, Stéphanie; Henrion, G.

doi:10.1016/j.surfcoat.2020.125987

Cited by 30 publications

(15 citation statements)

References 41 publications

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“…In general, the deposition of HOI coatings on light metals and their alloys improves their electrochemical stability under extreme conditions due to the delayed attack of aggressive species on the metal surface leading to the enhancement of the anticorrosion behavior. Among electrochemical analyses, potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) are the most commonly used techniques to scrutinize the corrosion behavior of HOI coatings on metallic materials [10,26,27]. PDP technique is used to understand the corrosion rate and susceptibility of materials to corrosion, whilst EIS technique together with equivalent circuit modelling describes corrosion mechanism providing relevant information regarding the roles of coating layers [19,28,29].…”

Section: Protective Performance: Polarization Behavior and Impedance Responsementioning

confidence: 99%

Hybrid Organic-Inorganic Materials on Metallic Surfaces: Fabrication and Electrochemical Performance

Nashrah

Putri

Alharissa

et al. 2021

Metals

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In recent years, hybrid organic-inorganic (HOI) materials have attracted massive attention as they combine the unique properties of organic and inorganic compounds. In this review, we focus on the formation of HOI materials and their electrochemical performance that can be controlled by microstructural design depending upon their chemical composition. This overview outlines the recent strategies of preparing HOI materials on metallic surface via wet-electrochemical systems, such as plasma electrolysis (PE) and dip chemical coating (DCC). The corresponding electrochemical behavior for short and long term exposures is also summarized.

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Section: Protective Performance: Polarization Behavior and Impedance Responsementioning

confidence: 99%

Hybrid Organic-Inorganic Materials on Metallic Surfaces: Fabrication and Electrochemical Performance

Nashrah

Putri

Alharissa

et al. 2021

Metals

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“…Some studies have shown that the ceramic particles are formed on the substrate surface and aggregated into the pancake form. [67,68] However, there are still a lot of gaps among these pancakes, causing the uniformity of the surface. As the micro-arc discharge reaction progresses, the melts are overflowed from the discharge micropores and accumulate around the micropores.…”

Section: Micropores and Microcracks In The Coatingsmentioning

confidence: 99%

Growth Mechanism of Ceramic Coating on ZK60 Magnesium Alloy Based on Two‐Step Current‐Decreasing Mode of Micro‐Arc Oxidation

Wang

Zhang

et al. 2021

Adv Eng Mater

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The ZK60 deformed magnesium alloy is treated by micro‐arc oxidation (MAO) and processed in the optimized silicate–phosphate electrolyte system, which is controlled under the two‐step current‐decreasing mode. The mechanism of discharge in the MAO process is investigated using the voltage–time curve and morphology of the spark discharge at different durations. The microstructures of the coatings fabricated at different durations are investigated. The rules of the coating ingrowth and/or outgrowth, the formation mechanisms of micropores, and microcracks in the coatings are explored systematically. The corrosion resistance of the coatings is measured by electrochemical methods. Through the exploration of the mechanism, two types of micropores in the coating are summarized: the in situ discharge growth type and the pores‐sealed type, and also three types of microcracks. The results illustrate the changes of the elements on the surface of the coating and Mg, O, and Si are incorporated into the coating formation process. The specimens show the best corrosion resistance after the two‐step current‐decreasing mode treatment.

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“…In this case, the micropores could be free paths for diffusion of corrosive ions to the interface of substrate and coating, which is harmful to the corrosion resistance performance. Thus, the composite MAO coatings obtained in the electrolytes containing various nanoparticles have got more attention as they present compactness, microstructure modification, and/or sealing of pores, which leads to better corrosion protection 15‐18 . Zuo et al.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the composite MAO coatings obtained in the electrolytes containing various nanoparticles have got more attention as they present compactness, microstructure modification, and/or sealing of pores, which leads to better corrosion protection. [15][16][17][18] Zuo et al…”

Section: Introductionmentioning

confidence: 99%

Improvement in corrosion resistance of micro‐arc oxidation coating on PVD Ti‐coated aluminum alloy 7075

Liu

Gao²,

Tong

et al. 2022

Int J Applied Ceramic Tech

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Surface treatments are always needed to enhance corrosion-resistant performance of aluminum (Al) alloys when they are used in seawater environments. The paper aimed to prepare the composite oxide ceramic coating on Al alloy 7075 by combining micro-arc oxidation (MAO) and magnetron sputtering technology. The Al substrate was precoated with titanium (Ti) layer by using the magnetron sputtering technology and then treated by MAO in the alkaline aluminate electrolyte, resulting in a composite MAO coating, which is composed of Al 2 O 3 and TiO 2 along with the complex oxide (Al 2 TiO 5 ). The potentiodynamic polarization and electrochemical impedance spectroscopy were carried out to evaluate the corrosion performance of the MAO coatings in 3.5 wt% NaCl solution. Better corrosion resistance was observed for composite oxide coating than the reference MAO coating on the bare Al, as evidenced by the higher corrosion potential of −0.664 V versus Ag/AgCl and the lower corrosion current density of 4.41 × 10 -6 A/cm 2 .

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Characterization of metal oxide micro/nanoparticles elaborated by plasma electrolytic oxidation of aluminium and zirconium alloys

Cited by 30 publications

References 41 publications

Hybrid Organic-Inorganic Materials on Metallic Surfaces: Fabrication and Electrochemical Performance

Hybrid Organic-Inorganic Materials on Metallic Surfaces: Fabrication and Electrochemical Performance

Growth Mechanism of Ceramic Coating on ZK60 Magnesium Alloy Based on Two‐Step Current‐Decreasing Mode of Micro‐Arc Oxidation

Improvement in corrosion resistance of micro‐arc oxidation coating on PVD Ti‐coated aluminum alloy 7075

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