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Journal articles on the topic 'Composition electrolytic coatings'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Nenastina, Tetiana, Мikola Sakhnenko, Valeria Proskurina, and Lyudmila Haponova. "SYNTHESIS OF ELECTROLYTIC TERNARY ALLOYS WITH HIGH MICROHARDNESS." Bulletin of the National Technical University «KhPI» Series: New solutions in modern technologies, no. 4(22) (December 29, 2024): 56–61. https://doi.org/10.20998/2413-4295.2024.04.07.

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Electrodeposition of electrolytic alloys consisting of metals of the iron subgroup and zirconium allows obtaining a coating with a unique combination of physical and chemical properties that cannot be achieved by other coating methods. One of the reasons limiting the use of electrolytic coatings based on such alloys is the complexity of process control process and composition forecasting. The properties of alloys of the iron subgroup containing refractory metals and their composites depend not only on the chemical composition, that is, the content of the refractory component, but also on the d

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2

Rakhadilov, B. K., D. R. Baizhan, Zh B. Sagdoldina, and K. Torebek. "Research of regimes of applying coats by the method of plasma electrolytic oxidation on Ti-6Al-4V." Bulletin of the Karaganda University. "Physics" Series 105, no. 1 (2022): 99–106. http://dx.doi.org/10.31489/2022ph1/99-106.

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In this work, ceramic coatings were formed on Ti6Al4V titanium alloy using a technique of plasma electrolytic oxidation. Plasma electrolytic oxidation was carried out in electrolytes with different chemical compositions and the effect of the electrolyte on the macro-and microstructure, pore size, phase composition and wear resistance of coatings was estimated. Three types of electrolytes based on sodium compounds were used, including phosphate, hydroxide, and silicate. The composition of the electrolyte affects the intensity and size of microcharges and the volume of gas release of various ele

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3

Rakhadilov, Bauyrzhan, and Daryn Baizhan. "Creation of Bioceramic Coatings on the Surface of Ti–6Al–4V Alloy by Plasma Electrolytic Oxidation Followed by Gas Detonation Spraying." Coatings 11, no. 12 (2021): 1433. http://dx.doi.org/10.3390/coatings11121433.

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In this work, bioceramic coatings were formed on Ti6Al4V titanium alloy using a combined technique of plasma electrolytic oxidation followed by gas detonation spraying of calcium phosphate ceramics, based on hydroxyapatite. Plasma electrolytic oxidation was carried out in electrolytes with various chemical compositions, and the effect of electrolytes on the macro and microstructure, pore size and phase composition of coatings was estimated. Three types of electrolytes based on sodium compounds were used: phosphate, hydroxide, and silicate. Plasma electrolytic oxidation of the Ti–6Al–4V titaniu

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4

Nenastina, Tetiana, Mykola Sakhnenko, and Anatoly Djenyk. "INFLUENCE OF ELECTROLYSIS CONDITIONS ON THE COMPOSITION OF ELECTROLYTIC COMPOSITE COATINGS BASED ON COBALT." Bulletin of the National Technical University "KhPI". Series: Chemistry, Chemical Technology and Ecology, no. 2(10) (April 27, 2024): 47–52. http://dx.doi.org/10.20998/2079-0821.2023.02.08.

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The composite coatings electrodeposition with the refractory metals with cobalt makes it possible to obtain a coating with a unique combination of physicochemical properties that are unattainable when using other application methods. One of the reasons for the limited use of the electrolytic method of coating with such composites is the difficulty of controlling the process. The properties of alloys of the iron subgroup with refractory metals and composites depend not only on the chemical composition (the content of the refractory component) but also on the deposition conditions. By varying th

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5

Nenastina, Tetiana, Nikolai Sakhnenko, Valeria Proskurina, and Natalia Horokhivska. "MODELING THE CONTENT OF COMPONENTS OF COMPOSITE ELECTROLYTIC COVER FROM THE POLARIZATION CURRENT." Bulletin of the National Technical University «KhPI» Series: New solutions in modern technologies, no. 3(13) (October 26, 2022): 81–85. http://dx.doi.org/10.20998/2413-4295.2022.03.12.

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The composite coatings electrodeposition with the refractory metals and zirconium with cobalt makes it possible to obtain a coating with a unique combination of physicochemical properties that are unattainable when using other application methods. One of the reasons for the limited use of the electrolytic method of coating with such composites is the difficulty of controlling the process. The properties of alloys of the iron subgroup with refractory metals and composites depend not only on the chemical composition (the content of the refractory component) but also on the deposition conditions.

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6

Kuzin, Ya S., I. A. Kozlov, S. V. Sibileva, and M. A. Fomina. "INVESTIGATION OF THE INFLUENCE OF COMPONENT COMPOSITION OF PEO ELECTROLYTES ON THEIR STABILITY AND COATING PROPERTIES." Proceedings of VIAM, no. 11 (2020): 102–12. http://dx.doi.org/10.18577/2307-6046-2020-0-11-102-112.

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The efficiency of various variants of the component composition of alkaline electrolytes of plasma electrolytic oxidation (PEO) was studied. Technical liquid glass, NaOH, Na2B4O7, Na3PO4, and NaAlO2 were used as components of aqueous solutions. All of the studied components of electrolytes are the most common for use in PEO processes of aluminum alloys. The influence of the component composition of electrolytes on their stability during 30 days of exposure was evaluated, and the most stable compositions were selected. The structure and properties of coatings formed on samples of aluminum alloy

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7

Guo, Ping Yi, Ning Wang, and Peng Fan. "Effect of the Electrolytic Solution Composition on Properties of Ceramic Coatings on Ti Produced by PEO." Applied Mechanics and Materials 174-177 (May 2012): 596–99. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.596.

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Ceramic oxide coatings were produced on pure titanium by plasma electrolytic oxidation in different electrolytes. The variation of coating thickness with applied voltages revealed coating almost kept a steady-state growth rate in electrolyte A and B, but not for electrolyte C. Numerous nodules occurred on the surface of the coatings at 200V in electrolyte A and B, and then nodules disappeared with the applied voltage increasing to 300V. There was no nodules occurred, and pore size was evidently different in electrolyte C. When the applied voltage was 300V, the coating formed in electrolyte C e

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8

Farrakhov, R. G., V. R. Aubakirova, M. V. Gorbatkov, Yu A. Lebedev, and E. V. Parfenov. "The formation of PEO coatings on the superelastic Ti–18Zr–15Nb alloy in calcium-containing electrolytes." Frontier materials & technologies, no. 3 (2022): 56–67. http://dx.doi.org/10.18323/2782-4039-2022-3-2-56-67.

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The paper discusses the influence of the electrolyte composition on the characteristics of a biocompatible coating produced by plasma electrolytic oxidation (PEO) on titanium superelastic shape memory alloy Ti–18Zr–15Nb. The scientific novelty of the work is in the identification of the most effective electrolyte composition to form a PEO coating with improved functional properties for advanced metal implants. Having important scientific and social significance, the scientific results of the work will serve as the basis for the development of modern technologies for the production of new-gener

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9

Peng, Zhenjun, Hui Xu, Siqin Liu, Yuming Qi, and Jun Liang. "Wear and Corrosion Resistance of Plasma Electrolytic Oxidation Coatings on 6061 Al Alloy in Electrolytes with Aluminate and Phosphate." Materials 14, no. 14 (2021): 4037. http://dx.doi.org/10.3390/ma14144037.

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Phosphate and aluminate electrolytes were used to prepare plasma electrolytic oxidation (PEO) coatings on 6061 aluminum alloy. The surface and cross-section microstructure, element distribution, and phase composition of the PEO coatings were characterized by SEM, EDS, XPS, and XRD. The friction and wear properties were evaluated by pin-on-disk sliding tests under dry conditions. The corrosion resistance of PEO coatings was investigated by electrochemical corrosion and salt spray tests in acidic environments. It was found that the PEO coatings prepared from both phosphate and aluminate electrol

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10

Byeon, Sang Sik, Kai Wang, Chan Gyu Lee, Yeon Gil Jung, and Bon Heun Koo. "Effect of Phosphate and Nitrate Electrolytes on Growth of Ceramic Coatings on 2021 Al Alloys Prepared by Electrolytic Plasma Processing." Advanced Materials Research 123-125 (August 2010): 1035–38. http://dx.doi.org/10.4028/www.scientific.net/amr.123-125.1035.

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2021 series aluminum alloy is used as the matrix material for its wide application in engineering to make AlON coating layers by the electrolytic plasma processing (EPP) method. The experiments were carried out on 2021 Al alloys in alkaline electrolytes which are eco-friendly and low-cost. The experimental electrolyte composition includes: 2g/L NaOH as the electrolytic conductive agent, 6~14g/L Na3PO4 as alumina formative agent, 0.5g/L NaNO3 as a nitrogen inducing agent. The effects of phosphate content variation are evaluated by a combined composition and structure analysis of the coating lay

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11

Cheng, Yubing, Xuemei Shi, You Lv, and Xinxin Zhang. "Effect of Electrolyte Temperature on Plasma Electrolytic Oxidation of Pure Aluminum." Metals 14, no. 6 (2024): 615. http://dx.doi.org/10.3390/met14060615.

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Plasma electrolytic oxidation (PEO) is normally carried out under conditions with electrolyte cooling. However, the effect of the temperature of the electrolytes on the PEO behavior and properties of the resulting coatings is seldom investigated. In this study, PEO of pure Al was carried out in a dilute aluminate electrolyte with the electrolyte temperature being controlled under low (~10–30 °C), medium (~40–50 °C) and high (~70–80 °C) temperature ranges, respectively. The morphology, microstructure, composition and phase component of the coatings fabricated under the different temperature ran

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12

Yar-Mukhamedova, G., M. Ved’, I. Yermolenko, N. Sakhnenko, A. Karakurkchi, and A. Kemelzhanova. "Effect of Electrodeposition Parameters on the Composition and Surface Topography of Nanostructured Coatings by Tungsten with Iron and Cobalt." Eurasian Chemico-Technological Journal 22, no. 1 (2020): 19. http://dx.doi.org/10.18321/ectj926.

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The electrodeposition of binary and ternary coatings Fe-W and Fe-Co-W from mono ligand citrate electrolyte has been investigated. The Fe-Co-W coatings were formed from electrolytes, which composition differs in the ratio of the concentrations of the alloying components and the ligand content. The investigation results indicate a competitive reduction of iron, cobalt and tungsten, the nature of which depends both on the ratio of electrolyte components, and electrolysis parameters. The effect of both current density amplitude and pulse on off time on quality, composition and surface morphology o

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13

Attarzadeh, Navid, and Chintalapalle V. Ramana. "Plasma Electrolytic Oxidation Ceramic Coatings on Zirconium (Zr) and ZrAlloys: Part I—Growth Mechanisms, Microstructure, and Chemical Composition." Coatings 11, no. 6 (2021): 634. http://dx.doi.org/10.3390/coatings11060634.

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Recently, a significant number of research projects have been directed towards designing and developing ceramic coatings for zirconium-based substrates due to their outstanding surface properties and utilization in modern technologies. The plasma electrolytic oxidation (PEO) coating is an environmentally friendly wet coating method that can be performed in a wide range of electrolytes. The surface characteristics of PEO coatings can be tailored by changing electrochemical parameters, electrolyte composition, and substrate alloying elements to adopt a conformal and adhesive PEO ceramic coating

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14

Kozlov, I. A., B. L. Krit, N. V. Morozova, M. V. Gerasimov, and I. V. Suminov. "Plasma Electrolytic Coatings Obtained on VT1-0 Titanium at Short Treatment Duration." Elektronnaya Obrabotka Materialov 58, no. 6 (2022): 13–18. http://dx.doi.org/10.52577/eom.2022.58.6.13.

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A possibility of obtaining thin continuous plasma-electrolyte protective oxide coatings on VT1-0 titanium in a nickel sulfate alkaline electrolyte without the addition of silicates in the sparking mode was studied. The elemental composition and the microstructure of coatings manufactured via plasma electrolytic oxidation (PEO) both on the substrate and after the destruction of the coating in 25% sulfuric acid were studied. As a result of the research, a possibility of forming thin (1 μm – 7 μm) continuous PEO coatings, with a treatment duration of 3–10 min, respectively, was established. The i

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15

Ved’, M., N. Sakhnenko, I. Yermolenko, G. Yar-Mukhamedova, and R. Atchibayev. "Composition and." Eurasian Chemico-Technological Journal 20, no. 2 (2018): 145. http://dx.doi.org/10.18321/ectj697.

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Principles of three component Iron-Cobalt-Tungsten alloys electrodeposition from complex Fe (III) based citrate electrolytes are discussed. It is shown, that deposition of ternary alloys proceeds through competitive reduction of cobalt and tungsten with iron. With increasing ligand concentration coatings are enriched with a refractory component; however, increasing current density favors a reverse trend. The effect of both current density and pulse on/off time on the quality, content of alloying metals and surface topography of electrolytic coatings were determined. The application of pulsed e

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16

Yang, Yifeng, Hao Wang, Xuchen Lu, and Cancan Liu. "The Influence of Water Content in Ethylene Glycol Electrolyte on Magnesium Plasma Electrolytic Fluorinated Coating." Coatings 15, no. 6 (2025): 701. https://doi.org/10.3390/coatings15060701.

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Plasma electrolytic fluorination (PEF) of AZ31 magnesium alloy was carried out by adding different ratios of water to the ethylene glycol-ammonium fluoride electrolyte. The structural composition of the coatings was characterized using SEM, XRD, and EDS, and the effects of water content on the microstructure and corrosion resistance of the PEF coatings were analyzed. The results showed that the addition of water promoted the ionization of ammonium fluoride and increased the conductivity of the glycol electrolyte, which led to a decrease in the termination voltage. However, the coating thicknes

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17

Hadzima, Branislav, Daniel Kajánek, Michal Jambor, et al. "PEO of AZ31 Mg Alloy: Effect of Electrolyte Phosphate Content and Current Density." Metals 10, no. 11 (2020): 1521. http://dx.doi.org/10.3390/met10111521.

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In this work, the quality of coatings prepared by plasma electrolytic oxidation (PEO) on an AZ31 magnesium alloy were evaluated. This was done by studying the effects of the chemical composition of phosphate-based process electrolytes in combination with different applied current densities on coating thickness, porosity, micro-cracking and corrosion resistance in 0.1 M NaCl. Both processing parameters were studied in four different levels. Mid-term corrosion resistance in 0.1 M NaCl was examined by electrochemical impedance spectroscopy and based on this, corrosion mechanisms were hypothesized

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18

Medvedev, D. L. "Investigation of Plasma Electric Oxide Coating Formed on the Prototype Samples of Aluminum Plates Made of 1050 Grade." Occupational Safety in Industry, no. 4 (April 2023): 7–13. http://dx.doi.org/10.24000/0409-2961-2023-4-7-13.

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Today, the technology of hardening the surface layers of parts and the creation of protective coatings on the surface with high physical, mechanical and chemical properties are especially efficient in many industries. The article presents the studies of the most promising innovative technology for surface hardening of 1050 grade aluminum plates by plasma electrolytic oxidation method. This method allows to obtain the materials with an ultra-high melting point, high hardness, and wear resistance. Possible conditions and mechanisms for the formation of protective layers on the surface of aluminu

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19

ZHANG, Y., W. FAN, H. Q. DU, and Y. W. ZHAO. "MICROSTRUCTURE AND WEARING PROPERTIES OF PEO COATINGS: EFFECTS OF Al2O3 AND TiO2." Surface Review and Letters 25, no. 05 (2018): 1850102. http://dx.doi.org/10.1142/s0218625x18501020.

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Plasma electrolytic oxidation (PEO) coatings were formed on aluminium alloy in additive Al2O3- and TiO2-containing Na2SiO3-based electrolytes, respectively. The effect of these additives on morphology, composition and wearing properties of coatings was investigated. The morphology and composition of coatings were studied by means of scanning electron microscopy (SEM) and X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS). Analysis of wearing properties of coatings were done by friction and wearing experiment. It was found that the use of additives greatly affects the surface morph

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20

Vasilyeva, Marina S., Vladimir S. Rudnev, Irina V. Lukiyanchuk, N. E. Zabudskaya, and I. V. Chasovnikov. "Sn-Containing Oxide Coatings: Formation, Composition, Electroanalytical and Catalytic Properties." Key Engineering Materials 806 (June 2019): 70–75. http://dx.doi.org/10.4028/www.scientific.net/kem.806.70.

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Sn-containing oxide coatings were prepared via plasma electrolytic oxidation (PEO) of Ti plate in the electrolytes with [SnII-EDTA]2- complex anions or SnO2 particles in the anode and anodic-cathodic modes. The coatings formed in electrolyte with SnO2 particles stabilized by SAS contain SnO2 and Sn0. In the electrolyte with [Sn-EDTA]2- complex anions, the SnO2-containing coatings were formed in the anodic mode while Sn0-containing ones were obtained in the anodic-cathodic mode. SnO2-containing structures formed in the electrolytes with [Sn-EDTA]2- anions are shown to be active in catalytic oxi

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21

SHARIFI, HOSSEIN, MAHMOOD ALIOFKHAZRAEI, GHASEM BRATAI DARBAND, and SUMAN SHRESTHA. "A REVIEW ON ADHESION STRENGTH OF PEO COATINGS BY SCRATCH TEST METHOD." Surface Review and Letters 25, no. 03 (2018): 1830004. http://dx.doi.org/10.1142/s0218625x18300046.

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Adhesion strength is one of the important properties that reflects the quality of a plasma electrolytic oxidation (PEO) coating. Scratch testing can be considered as an appropriate technique to evaluate the adhesion strength of PEO coatings on magnesium, titanium, and aluminum substrates. The scratch test is usually performed either under a constant or a progressively increasing normal load, where the critical load is used as a measure of adhesion strength of the coatings. In this review paper, the effect of different factors such as duration of coating processing, electrolyte composition, and

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22

Wu, Xin, Qing Min Liu, and Hong Xia Li. "Effects of Electrolyte Composition on the Properties of Micro-Arc Oxidation Coatings Formed on 6063 Alloy." Key Engineering Materials 609-610 (April 2014): 232–37. http://dx.doi.org/10.4028/www.scientific.net/kem.609-610.232.

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Micro-arc oxidation (MAO) coating was prepared in different electrolyte compositions on 6063 alloy and its characterizations were detected by X-ray diffractometer (XRD), scanning electric microscope (SEM), energy dispersive X-ray spectrometer (EDX) and Vickers hardness tester. Friction and wear behaviors of the coatings were tested without lubrication and the abrasion loss was measured after the friction test. The results showed that the MAO coatings, presenting rough and porous surface and high hardness, mainly consisted of α-Al2O3 and γ-Al2O3 phases. The composition of electrolytic solution

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23

Yin, Yu Jun, Shu Hua Li, Da Wei Shen, Yuan Yuan Zu, and Chang Zheng Qu. "Effects of Al₂O₃ Nanoparticles on Microstructure and Performance of Ceramic Coatings by Micro-Arc Oxidation." Key Engineering Materials 537 (January 2013): 92–96. http://dx.doi.org/10.4028/www.scientific.net/kem.537.92.

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A dense ceramic oxide coating approximately 45 µm thick was prepared on a Ly12 aluminum alloy by micro-arc oxidation in an alkali-phosphate electrolytic solution. Coating thickness and surface roughness (Ra) were measured after the coating had been synthesized. The effects of Al2O3 Nanoparticles in electrolyte on phase composition, microstructure and microhardness of the micro-arc oxidation ceramic coatings on Ly12 aluminum alloy were investigated by means of XRD, SEM and hardness experimentation. The results show that the ceramic coatings become more dense and its microhardness increased by a

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24

Nenastina, Tetiana. "Effect of electrolysis parameters on the functional properties of composite electrolytic coatings." Bulletin of Kharkov National Automobile and Highway University, no. 98 (November 29, 2022): 71. http://dx.doi.org/10.30977/bul.2219-5548.2022.98.0.71.

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Problem. The functional properties of composite electrolytic coatings Co-Mo-WОх, Co-W-ZrО2, Co-Mo-ZrО2, besieged in galvanostatic mode from pyrophosphate-citrate electrolytes are discussed. The effect of the temperature and acidity of the electrolyte on the microstinity of coatings has been proved. It was established that the content of refractory metals does not affect the microhardness of cobalt coatings with such metals, however, dependence on the conditions of the electrical sanction was detected. Goal. The goal is investigation of the effect of electrolysis parameters on the qualitative c

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25

Gruba, O., and N. Vekesser. "Increasing the Efficiency of the Electrolytic Chromiation Process." Bulletin of the South Ural State University series "Chemistry" 14, no. 1 (2022): 114–24. http://dx.doi.org/10.14529/chem220113.

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The problem of increasing reliability and durability of machines, mechanisms, and instruments is common to all fields of technology. This problem can be solved by applying wear-resistant coatings and chromium-based alloys. The method of electrochemical chromium plating has a number of significant disadvantages: low current efficiency of chromium; the lowest dissipation ability among galvanic processes; high energy intensity; the presence of high internal stresses of chromium coatings; hydrogenation of chromium and base alloy sediments. Therefore, at present, a large number of studies are being

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26

Liu, Wanying, Junjie Yang, Yuhong Qiu, Ying Liu, and Kuanhai Deng. "Titanium carbide’s effects on coatings formed on D16T aluminum alloy by plasma electrolytic oxidation." Anti-Corrosion Methods and Materials 67, no. 1 (2020): 48–58. http://dx.doi.org/10.1108/acmm-06-2019-2149.

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Purpose The preferable concentration of titanium carbide was optimized and added as an additive to the micro-arc oxidation electrolyte to produce a high corrosion-resistant coating on D16T aluminum alloy. Design/methodology/approach Ceramic coatings were deposited on D16T aluminum alloy by plasma electrolytic oxidation in alkaline silicate electrolytes with micron titanium carbide particle suspending at different concentrations. Influences of additive concentration on morphology, elemental and phase composition and corrosion resistance of doped PEO coatings were evaluated by scanning electron

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27

Chizhevskaya, M. V., V. A. Mironova, A. V. Girn, and E. V. Khodenkova. "Chemical Processes in PEO Coatings Formation and Destruction on Titanium Alloy VT-1." Key Engineering Materials 887 (May 2021): 332–38. http://dx.doi.org/10.4028/www.scientific.net/kem.887.332.

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Plasma electrolytic oxidation (PEO) method allows obtaining multifunctional ceramic-like coatings with unique properties. This article examines the relevant problem of the electrolyte effect on the chemical composition of PEO coating. The corrosion resistance of titanium alloy various PEO coatings in corrosive liquids has been studied: 1N sodium hydroxide solution, concentrated sulphuric acid (80%), 1N sulphuric acid solution, concentrated hydrochloric acid (30%), 1N hydrochloric acid solution. Comparative analysis of the VT-1 titanium alloy chemical resistance showed that the most resistant t

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28

Echeverry-Rendon, Monica, Valentina Duque, David Quintero, Sara M. Robledo, Martin C. Harmsen, and Felix Echeverria. "Improved corrosion resistance of commercially pure magnesium after its modification by plasma electrolytic oxidation with organic additives." Journal of Biomaterials Applications 33, no. 5 (2018): 725–40. http://dx.doi.org/10.1177/0885328218809911.

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The optimal mechanical properties render magnesium widely used in industrial and biomedical applications. However, magnesium is highly reactive and unstable in aqueous solutions, which can be modulated to increase stability of reactive metals that include the use of alloys or by altering the surface with coatings. Plasma electrolytic oxidation is an efficient and tuneable method to apply a surface coating. By varying the plasma electrolytic oxidation parameters voltage, current density, time and (additives in the) electrolytic solution, the morphology, composition and surface energy of surface

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Belov, D. V., M. V. Maximov, S. N. Belyaev, T. I. Devyatkina, and G. A. Gevorgyan. "Effect of azo compounds on structure and mechanical properties of copper coating electrodeposited on oxidized aluminum alloys." Perspektivnye Materialy 6 (2021): 40–59. http://dx.doi.org/10.30791/1028-978x-2021-6-40-59.

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This article discusses a new method for producing copper electrolytic coatings with high performance properties applied to oxidized aluminum alloys. The purpose of this work is to reveal the effect of the azo compound additive, methyl red (MR), on the structure and physicomechanical properties of copper coatings deposited on oxidized aluminum. To achieve this goal, the following tasks were solved: the microstructure and adhesive properties of the copper coating formed on oxidized aluminum alloys were determined, and the physical and mechanical properties of the copper coating (microhardness, o

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30

Tu, Chaohui, Xuanyu Chen, Cancan Liu, and Deye Li. "Plasma Electrolytic Oxidation Coatings of a 6061 Al Alloy in an Electrolyte with the Addition of K2ZrF6." Materials 16, no. 11 (2023): 4142. http://dx.doi.org/10.3390/ma16114142.

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In this study, white thermal control coatings were produced on a 6061 Al alloy using plasma electrolytic oxidation (PEO). The coatings were mainly formed by incorporating K2ZrF6. The phase composition, microstructure, thickness, and roughness of the coatings were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), a surface roughness tester, and an eddy current thickness meter, respectively. The solar absorbance and infrared emissivity of the PEO coatings were measured using a UV–Vis–NIR spectrophotometer and FTIR spectrometer, respectively. The addition of K2ZrF6

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Toulabifard, Amirhossein, Maryam Rahmati, Keyvan Raeissi, Amin Hakimizad, and Monica Santamaria. "The Effect of Electrolytic Solution Composition on the Structure, Corrosion, and Wear Resistance of PEO Coatings on AZ31 Magnesium Alloy." Coatings 10, no. 10 (2020): 937. http://dx.doi.org/10.3390/coatings10100937.

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Plasma electrolytic oxidation coatings were prepared in aluminate, phosphate, and silicate-based electrolytic solutions using a soft-sparking regime in a multi-frequency stepped process to compare the structure, corrosion, and wear characteristics of the obtained coatings on AZ31 magnesium alloy. The XRD results indicated that all coatings consist of MgO and MgF2, while specific products such as Mg2SiO4, MgSiO3, Mg2P2O7, and MgAl2O4 were also present in specimens based on the selected solution. Surface morphology of the obtained coatings was strongly affected by the electrolyte composition. Al

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32

Petkovic, Marija, Stevan Stojadinovic, Rastko Vasilic, Ivan Belca, Becko Kasalica, and Ljubisa Zekovic. "Plasma electrolytic oxidation of tantalum." Serbian Journal of Electrical Engineering 9, no. 1 (2012): 81–94. http://dx.doi.org/10.2298/sjee1201081p.

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This paper is a review of our research on the plasma electrolytic oxidation (PEO) process of tantalum in 12-tungstosilicic acid. For the characterization of microdischarges during PEO, real-time imaging and optical emission spectroscopy (OES) were used. The surface morphology, chemical and phase composition of oxide coatings were investigated by AFM, SEM-EDS and XRD. Oxide coating morphology is strongly dependent on PEO time. The elemental components of PEO coatings are Ta, O, Si and W. The oxide coatings are partly crystallized and mainly composed of WO3, Ta2O5 and SiO2.

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Serikbekuly, N., K. D. Ormanbekov, A. B. Shynarbek, and A. Zh Zhassulan. "STUDYING THE INFLUENCE OF ELECTROLYTIC MEDIUM ON THE STRUCTURAL-PHASE COMPOSITION OF CALCIUM-PHOSPHATE COATINGS OBTAINED BY THE METHOD OF MICROARC OXIDATION ON THE SURFACE OF TITANIUM ALLOY VT1-0." Bulletin of Shakarim University. Technical Sciences 1, no. 2(14) (2024): 355–64. http://dx.doi.org/10.53360/2788-7995-2024-2(14)-44.

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This article examines the influence of the electrolytic environment on the structure and phase composition of calcium phosphate coatings obtained by microarc oxidation of the surface of VT1-0 titanium alloy. Experimental studies using different electrolytic media (eg, aqueous calcium nitrate and aqueous ammonium phosphate) are presented. The phase composition and morphology of the coatings were analyzed using microscopy and X-ray diffraction analysis. Based on the research of scientists in this field, it was possible to evaluate the influence of the electrolytic environment on the formation of

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Tseluikin, Vitaly, Asel Dzhumieva, Andrey Yakovlev, et al. "Electrodeposition and Corrosion Properties of Nickel–Graphene Oxide Composite Coatings." Materials 14, no. 19 (2021): 5624. http://dx.doi.org/10.3390/ma14195624.

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Nickel-based composite electrochemical coatings (CEC) modified with multilayer graphene oxide (GO) were obtained from a sulfate-chloride electrolyte in the reverse electrolysis mode. The microstructure of these CECs was investigated by X-ray phase analysis and scanning electron microscopy. The corrosion-electrochemical behavior of nickel–GO composite coatings in a 0.5 M solution of H2SO4was studied. Tests in a 3.5% NaCl solution showed that the inclusion of GO particles into the composition of electrolytic nickel deposits makes their corrosion rate 1.40–1.50 times less.

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Piatkova, Mariia, Arina Pleshkova, Dmitry Mashtalyar, et al. "Formation of composite coatings: morphology and composition studies." MATEC Web of Conferences 376 (2023): 01005. http://dx.doi.org/10.1051/matecconf/202337601005.

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In this work, composite fluoropolymer-containing coatings were obtained on samples of AMg3 aluminium alloy, MA8 magnesium alloy, and VT1-0 commercially pure titanium treated by plasma electrolytic oxidation (PEO). Superdispersed polytetrafluoroethylene (SPTFE) and a solution of tetrafluoroethylene (TFE) telomers in acetone were applied onto preliminarily formed PEO layers by the spray-coating method. The obtained coatings contained a large amount of crystalline polytetrafluoroethylene embedded in the outer porous layer of the PEO coating and did not have visible defects, which indirectly indic

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PAK, SUNG-NAM, KYONG-SIK JU, KWANG-WON NAM, and CHOL-HO PANG. "COMPARISON OF THE INFLUENCE OF PHYTIC ACID AND SILANE ADDITIVES ON CORROSION RESISTANCE OF CERAMIC COATINGS ON Mg ALLOY BY PEO METHOD." Surface Review and Letters 28, no. 07 (2021): 2150063. http://dx.doi.org/10.1142/s0218625x21500633.

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Phytic acid (PA) and 3-aminopropyltrimethoxysilane (APTMS) were selected as organic additives and respectively doped into Na2SiO3-NaOH electrolyte to prepare ceramic coatings on AZ31B Mg alloys by Plasma Electrolytic Oxidation (PEO) method. The influences of two additives on corrosion resistance of the PEO coatings were compared. The microstructure, composition and corrosion resistance of the PEO coatings were examined by SEM, EDX, XPS, XRD, potentiodynamic polarization test and EIS measurement. The results indicated that each additive increased both the coating thickness and corrosion resista

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Zhou, Kai, Faqin Xie, Xiangqing Wu, and Shaoqing Wang. "Fabrication of High Temperature Oxidation Resistance Nanocomposite Coatings on PEO Treated TC21 Alloy." Materials 13, no. 1 (2019): 11. http://dx.doi.org/10.3390/ma13010011.

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The effects of ZrO2 nanoparticles in a NaAlO2 electrolyte on the thickness, morphology, composition, structure, and high temperature oxidation resistance of plasma electrolytic oxidation (PEO) coatings on a TC21 titanium alloy were investigated. The coating thickness increased with increasing concentration of ZrO2 nanoparticles in the electrolyte, accompanied by a decrease in the porosity of the coating surface. The PEO coatings formed in the ZrO2 nanoparticle-free electrolyte were composed of Al2TiO5. ZrTiO4, m-ZrO2, and t-ZrO2 were detected in the PEO coatings produced by the electrolyte tha

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Hwang, Myungwon, and Wonsub Chung. "Effects of a Carbon Nanotube Additive on the Corrosion-Resistance and Heat-Dissipation Properties of Plasma Electrolytic Oxidation on AZ31 Magnesium Alloy." Materials 11, no. 12 (2018): 2438. http://dx.doi.org/10.3390/ma11122438.

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Plasma electrolytic oxidation (PEO) coating was obtained on AZ31 Mg alloy using a direct current in a sodium silicate-based electrolyte with and without a carbon nanotube (CNT) additive. The surface morphology and phase composition of the PEO coatings were investigated through field emission scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The corrosion-resistance properties of the PEO coatings were evaluated using potentiodynamic polarization measurements and electrochemical impedance spectroscopy (EIS) in a 3.5 wt.% NaCl solution. Furth

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Wang, Yun Long, Miao Wang, Ming Zhou, and Zhao Hua Jiang. "Characterization of Graphite Containing Ceramic Coating Prepared on Carbon Steel by Plasma Electrolytic Oxidation." Applied Mechanics and Materials 271-272 (December 2012): 46–49. http://dx.doi.org/10.4028/www.scientific.net/amm.271-272.46.

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Ceramic coatings containing graphite were prepared on Q235 carbon steel by plasma electrolytic oxidation (PEO) in aluminate electrolyte with graphite dispersed in electrolyte. The microstructure and properties of the coatings including phase composition, surface and cross section morphology, thickness and bonding strength were characterized. The results showed that the coating consisted of FeAl2O4, Fe3O4 and a certain amount of graphite. The coating was typically characterized by micro pores and ball-shaped round grains distributed on the surface. With increasing the treating current density,

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REHMAN, ZEESHAN UR, BYUNG-HYUN AHN, YEONG SEUNG JEONG, JUNG-IL SONG, and BON-HEUN KOO. "THE INFLUENCE OF VARIOUS ADDITIVES ON THE PROPERTIES OF PEO COATINGS FORMED ON AZ31 Mg ALLOY." Surface Review and Letters 23, no. 03 (2016): 1650006. http://dx.doi.org/10.1142/s0218625x16500062.

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In this work, plasma electrolytic oxidation (PEO) ceramic coatings were prepared on magnesium AZ31B alloy. Various electrolyte solutions including phosphate, aluminate and silicate as additives and NaOH [Formula: see text] Na2SiF6 as constant agent were used to prepare the coatings. Influence of the additives on chemical composition and structure of the PEO coatings were examined by means of scanning electron microscope (SEM) and XRD. From structural analysis it was found that coatings prepared in the aluminate-based electrolyte have the best structural features. Microhardness and tribological

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Steblyanko, V. L., A. P. Ponomarev, and Y. Y. Efimova. "Features of Plasma-Electrolytic Coatings Formation on Metalware Surface." Solid State Phenomena 265 (September 2017): 969–74. http://dx.doi.org/10.4028/www.scientific.net/ssp.265.969.

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The paper presents the principal advantages of plasma-electrolytic coating method that characterize it as a highly promising technology. It is shown that these advantages are provided by the integrated nature of the effect, representing a combination of the main types of impacts on a surface: electrical, thermal, mechanical and chemical. This combination distinguishes the method of plasma-electrolytic treatment from many other widespread in up-to-date technology combinations composed generally of two types of impacts. It is suggested that the process of plasma-electrolytic coating is carried o

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Lazarev, D.M., R.G. Farrakhov, V.R. Mukaeva, O.B. Kulyasova, E.V. Parfenov, and A.L. Yerokhin. "The growth kinetics and protective properties of PEO-coatings on a biodegradable Mg-2%Sr alloy." Elektronnaya Obrabotka Materialov 55 (5) (October 29, 2019): 43–54. https://doi.org/10.5281/zenodo.3522285.

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The growth kinetics of plasma electrolytic oxide coatings on a coarse grained and ultrafine-grained biodegradable Mg-2%Sr alloy was evaluated. Kinetic coefficients corresponding to the coating growth according to the dissolution-precipitation model were estimated depending on the alloy structure, and their correlation with the coating properties was demonstrated. The coating morphology and phase composition were correlated with protective properties studied using electrochemical tests on treated and untreated samples in Ringer's solution. Equivalent circuits for the systems «alloy-el

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Bayatanova, L. B., A. Zh Zhassulankyzy, N. M. Magazov, B. K. Rakhadilov, N. Muktanova, and G. K. Uazyrkhanova. "Effect of plasma-electrolytic oxidation on mechanical properties of titanium coatings." Bulletin of the Karaganda University. "Physics" Series 111, no. 3 (2023): 65–74. http://dx.doi.org/10.31489/2023ph3/65-74.

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The process of plasma electrolytic oxidation (PEO) allows to obtain multifunctional coatings with unique properties, including wear-resistant, corrosion-resistant, heat-resistant, electrical insulating and decorative. Therefore, the field of application of these coatings is quite wide: medicine, aircraft construction, shipbuilding, instrumentation, automotive and other industries. The technology is based on the phenomenon of micro-arc discharges promoting the formation of oxide layers on metal surfaces. In this review the technologies of obtaining coatings by plasma electrolytic oxidation on t

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Gnusina, A. M., and N. N. Gryzunova. "ELECTROLYTIC PRODUCTION OF MAGNESIUM COATINGS." Frontier materials & technologies, no. 1 (2022): 24–30. http://dx.doi.org/10.18323/2782-4039-2022-1-24-30.

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Magnesium, its compounds, and alloys arise recently the heightened interest among scientists all over the world. The interest in magnesium research is caused by its combination of many promising properties that find practical application in various sectors of the national economy. On an industrial scale, the bulk of magnesium is produced by the electrolysis from the melt. However, there is a problem with the environmental security of this process. This method is environmentally unfriendly since it is accompanied by the release of hazardous chlorine and organochlorine compounds into the environ

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WANG, HONG-YUAN, RUI-FU ZHU, YU-PENG LU, GUI-YONG XIAO, JIE MA, and Y. F. YUAN. "PREPARATION AND MECHANISM OF CONTROLLABLE MICROPORES ON BIOCERAMIC TiO2 COATINGS BY PLASMA ELECTROLYTIC OXIDATION." Surface Review and Letters 20, no. 05 (2013): 1350051. http://dx.doi.org/10.1142/s0218625x13500510.

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Porous titania coatings with Ca and P elements were synthesized by plasma electrolytic oxidation (PEO). The treatment was carried out in an electrolyte containing calcium acetate monohydrate and disodium phosphate dodecahydrate ( Ca / P = 5), and 4–20 μm micropores were prepared on the coatings by applied pulse frequencies of 200–1000 Hz. The surface structure, chemical composition of the TiO 2 coatings, and time-dependent variation of electric currents were studied. The result revealed that the coating micropores, which could be controlled in size, increased with higher frequency, and the coa

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Stojadinović, Stevan, and Pedro Nelson. "Formation of Alpha-Al2O3 Coatings on Tungsten Substrate by Plasma Electrolytic Oxidation." Ceramics 8, no. 2 (2025): 29. https://doi.org/10.3390/ceramics8020029.

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Oxide coatings formed by plasma electrolytic oxidation (PEO) of tungsten substrate for 10 min in a phosphate alkaline electrolyte (PAE, 2 g/L Na3PO4·12H2O) with an addition of 2 g/L, 3 g/L, and 4 g/L NaAlO2 were investigated by SEM/EDS and XRD. In PAE + 2 g/L NaAlO2, a weakly crystalline coating is formed, consisting of amorphous Al2O3, the triclinic phase of WO3, the cristobalite phase of AlPO4 and the gamma and alpha phases of Al2O3. Strong micro-discharges during PEO in PAE with the addition of 3 g/L and 4 g/L NaAlO2 lead to the crystallization of amorphous Al2O3 into gamma-Al2O3 and alpha-

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Tu, Xiaohua, Chengping Miao, Yang Zhang, Yaling Xu, and Jiayou Li. "Plasma Electrolytic Oxidation of Magnesium Alloy AZ31B in Electrolyte Containing Al2O3 Sol as Additives." Materials 11, no. 9 (2018): 1618. http://dx.doi.org/10.3390/ma11091618.

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Plasma electrolytic oxidation (PEO) coatings were produced on AZ31B magnesium alloys in alkaline electrolytes with the addition of various concentrations of Al2O3 sols. Effects of Al2O3 sol concentrations on the microstructure, phase composition, corrosion resistance and hardness of PEO coatings were evaluated by scanning electron microscopy (SEM), X-ray diffraction (XRD), microhardness testing and potentiodynamic polarization measurements, respectively. It was revealed that the Al2O3 sol mostly participated in the formation of the ceramic coating and transferred into the MgAl2O4 phase. With t

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Chen, Xuanyu, Hao Wang, Cancan Liu, Wenqiang Wang, and Bo Chen. "Influence of Additives on the Macroscopic Color and Corrosion Resistance of 6061 Aluminum Alloy Micro-Arc Oxidation Coatings." Materials 17, no. 11 (2024): 2621. http://dx.doi.org/10.3390/ma17112621.

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In this study, we successfully employed the plasma electrolytic oxidation (PEO) technique to create a uniform white ceramic layer on the surface of the 6061 aluminum alloy using K2ZrF6 and Na2WO4 as colorants. A scanning electron microscope (SEM) equipped with an energy-dispersive X-ray spectrometer (EDS) and X-ray diffraction (XRD) were used to characterize the coatings, and we used an electrochemical workstation to test their corrosion protection properties. The corrosion resistance of the coatings was analyzed using potentiodynamic polarization curves. The results showed that K2ZrF6 additio

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Lu, Xiaopeng, Yan Chen, Carsten Blawert, et al. "Influence of SiO2 Particles on the Corrosion and Wear Resistance of Plasma Electrolytic Oxidation-Coated AM50 Mg Alloy." Coatings 8, no. 9 (2018): 306. http://dx.doi.org/10.3390/coatings8090306.

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The influence of SiO2 particles on the microstructure, phase composition, corrosion and wear performance of plasma electrolytic oxidation (PEO) coatings on AM50 Mg was investigated. Different treatment durations were applied to fabricate coatings in an alkaline, phosphate-based electrolyte (1 g/L KOH + 20 g/L Na3PO4 + 5 g/L SiO2), aiming to control the incorporated amount of SiO2 particles in the layer. It was found that the uptake of particles was accompanied by the coating growth at the initial stage, while the particle content remained unchanged at the final stage, which is dissimilar to th

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Mashtalyar, Dmitry V., Konstantine V. Nadaraia, Andrey S. Gnedenkov, et al. "Bioactive Coatings Formed on Titanium by Plasma Electrolytic Oxidation: Composition and Properties." Materials 13, no. 18 (2020): 4121. http://dx.doi.org/10.3390/ma13184121.

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Bioactive coatings on VT1-0 commercially pure titanium were formed by the plasma electrolytic oxidation (PEO). A study of the morphological features of coatings was carried out using scanning electron microscopy. A composition of formed coatings was investigated using energy-dispersive spectroscopy and X-ray diffractometry analysis. It was shown that PEO-coatings have calcium phosphate in their composition, which increases the bioactivity of the surface layer. Electrochemical properties of the samples were studied by potentiondynamic polarization and electrochemical impedance spectroscopy in d

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