Effects of electrolytes on the growth behavior, microstructure and tribological properties of plasma electrolytic oxidation coatings on a ZA27 alloy

Bian, Guangdong; Wang, Linlin; Wu, Jing; Zheng, Jianlong; Sun, Huaijun; DaCosta, Herbert

doi:10.1016/j.surfcoat.2015.07.052

Cited by 26 publications

(3 citation statements)

References 12 publications

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“…By adding more NaF into the electrolyte, nodular features became clearer. The nodular structure is not the same shape as those reported in the literature [23,24] because small size pores are observed within the nodules. The nodular structure observed in this work rather resembles the pancake structure where a pore is located at its center [24,[25][26][27].…”

Section: Resultsmentioning

confidence: 60%

Anodic Oxide Films Formed on AZ31 Magnesium Alloy by Plasma Electrolytic Oxidation Method in Electrolytes Containing Various NaF Concentrations

Moon¹,

Kwon²

2016

Journal of the Korean institute of surface engineering

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The present work was conducted to investigate the effects of NaF concentration in phosphate and silicatecontaining alkaline electrolyte on the morphology, thickness, surface roughness and hardness of anodic oxide films formed on AZ31 Mg alloy by plasma electrolytic oxidation (PEO) method. The PEO films showed flat surface morphology with pores in the absence of NaF in the electrolyte, but nodular features appeared on the PEO film surface prepared in NaF-containing electrolyte. Numerous pores ranging from 1 to 20 µm in size were observed in the PEO films and the size of pores decreased with increasing NaF concentration in the electrolyte. Surface roughness and thickness of PEO films showed increases with increasing NaF concentration. Hardness of the PEO films also increased with increasing NaF concentration. It was noticed that hardness of inner part of the PEO films is lower than that of outer part of them, irrespective of the concentration of NaF. The low hardness of PEO films was explained by the presence of a number of small size pores less than 2 µm near the PEO film/substrate interface.

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Section: Resultsmentioning

confidence: 60%

Anodic Oxide Films Formed on AZ31 Magnesium Alloy by Plasma Electrolytic Oxidation Method in Electrolytes Containing Various NaF Concentrations

Moon¹,

Kwon²

2016

Journal of the Korean institute of surface engineering

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“…In particular, it was found that despite the thickness of the obtained coatings, the ZnO layers are only slightly protective, due to their semiconducting properties and the presence of cracks and porosities. Better results were found for ZA alloys in different studies published by Pezzato et al [20], Bian et al [21] and Guangyin Li et al [22]. In all the cases was found that the PEO method can produce continuous and dense coating on the ZA27 alloy using silicate, aluminate, and aluminate/borate electrolytes.…”

Section: Introductionmentioning

confidence: 84%

Effect of Cu Addition on the Corrosion and Antifouling Properties of PEO Coated Zinc-Aluminized Steel

et al. 2022

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In the present work, Plasma Electrolytic Oxidation (PEO) coatings were produced on zinc-aluminized carbon steels (Galvalume commercial treatment). In addition, copper particles of various sizes were introduced into the coating in order to produce samples with antifouling properties. The particles were successfully embedded into the coating. A higher number of embedded particles was observed when these are in sub-micrometric size and obtained in pulsed current. The presence of particles produces significant antifouling properties on the sample’s surfaces during the first 20 days of immersion. The presence of the particles reduces the corrosion resistance in comparison to the samples PEO coated without the particles; however, the corrosion resistance remain higher than the one of the untreated sample.

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“…Recently, it has been shown that anodic oxide films can be generated on Zn. The scope of PEO studies on Zn is quite narrow compared with Ti and Mg, but, recently, important advancements were achieved with the successful formation of customized PEO coatings on pure Zn [301][302][303][304] and its alloys [305][306][307][308]. Oxide layers were developed in electrolytes based on KOH, phosphate/aluminates, and silicates with thicknesses in the range of 5-50 μm.…”

Section: Peo Of Zn Alloysmentioning

confidence: 99%

Hybrid functionalized coatings on Metallic Biomaterials for Tissue Engineering

Santos-Coquillat

Martínez-Campos

Sánchez

et al. 2021

Surface and Coatings Technology

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Effects of electrolytes on the growth behavior, microstructure and tribological properties of plasma electrolytic oxidation coatings on a ZA27 alloy

Cited by 26 publications

References 12 publications

Anodic Oxide Films Formed on AZ31 Magnesium Alloy by Plasma Electrolytic Oxidation Method in Electrolytes Containing Various NaF Concentrations

Anodic Oxide Films Formed on AZ31 Magnesium Alloy by Plasma Electrolytic Oxidation Method in Electrolytes Containing Various NaF Concentrations

Effect of Cu Addition on the Corrosion and Antifouling Properties of PEO Coated Zinc-Aluminized Steel

Hybrid functionalized coatings on Metallic Biomaterials for Tissue Engineering

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