Review of the role of graphene and its derivatives in enhancing the performance of plasma electrolytic oxidation coatings on titanium and its alloys

Fattah‐alhosseini, Arash; Molaei, Maryam; Nouri, Meisam; Babaei, Kazem

doi:10.1016/j.apsadv.2021.100140

Cited by 44 publications

(15 citation statements)

References 139 publications

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“…Although titanium and its alloys have been extensively used in industry for a wide variety of applications (e.g., aerospace [1,2], automotive [1], medical [1], marine [2], chemical [3] and petrochemical [3] fields) due to their high strength [1], low density [3], corrosion resistance [1] and biological compatibility [3], research efforts have been devoted to enhancing the mechanical and corrosion-resistance properties of pure titanium and titanium alloys through various processing methods, including physical vapor deposition [4], plasma spraying [5], chemical vapor deposition [6], nitriding [7], laser surface engineering [8][9][10], atomic layer deposition [11] and plasma electrolytic oxidation (PEO) [12,13]. PEO involves the electrochemical oxidation of a metal substrate (usually Ti, Zr, Al or Mg) in an aqueous electrolyte in order to generate oxide coatings with improved wear and corrosion-resistance performance [14].…”

Section: Introductionmentioning

confidence: 99%

Improvement of Mechanical and Corrosion Properties of Commercially Pure Titanium Using Alumina PEO Coatings

et al. 2021

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In this study, the surface of commercially pure titanium (Cp-Ti) was covered by a 21–95 µm-thick aluminum oxide layer using plasma electrolytic oxidation. Coating characterization revealed the formation of nodular and granular α- and γ-Al2O3 phases with minor amounts of TiAl2O5 and Na2Ti4O9 which yielded a maximum 49.0 GPa hardness and 50 N adhesive critical load. The corrosion resistance behavior in 3.5 wt.% NaCl solution of all plasma electrolytic oxidation (PEO) coatings was found to be two orders of magnitude higher compared to bare Ti substrate.

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Section: Introductionmentioning

confidence: 99%

Improvement of Mechanical and Corrosion Properties of Commercially Pure Titanium Using Alumina PEO Coatings

et al. 2021

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“…In Region I, the voltage linearly and steeply increases, and the average voltage increase rate is 32 V/s. At this stage, with the voltage rising, conventional anodizing occurs [ 25 ] so that a very thin oxide film with a high resistivity is formed on the surface. The amount of voltage increase for the sample was 285 V in around 9 s. In region II, the graph shows a lessening trend, with a decrease of 17%, indicating the failure of the formed TiO 2 oxide in part I.…”

Section: Resultsmentioning

confidence: 99%

“…The uncoated titanium sample (Ti) surface in Figure 2 b shows parallel lines originating from the abrasion by sandpaper. The morphology of the Ti/TiO 2 sample ( Figure 2 c) consists of grains of different sizes and micro-cavities on these grains (pancake-like structure) [ 1 , 25 ]. The top surface of this coating has a distinct appearance: the surface consists of a large number of pores of various sizes; some of these pores are surrounded by relatively smooth re-solidified pseudo circle areas.…”

Section: Resultsmentioning

confidence: 99%

Corrosion and Wear Behavior of TiO2/TiN Duplex Coatings on Titanium by Plasma Electrolytic Oxidation and Gas Nitriding

et al. 2022

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In this study, corrosion and wear behavior of three kinds of coatings by two processes, namely, plasma electrolytic oxidation (PEO) coatings (Ti/TiO2), gas nitriding coating (Ti/TiN), and the duplex coating (Ti/TiO2-N) by combination of PEO and gas nitriding methods were systematically investigated. X-ray diffraction tests, field-emission scanning electron microscopy, and adhesion tests are employed for the coating characterization, along with the wear and electrochemical test for evaluating the corrosion and tribological properties. The morphology and structure of the coating consist of micro-cavities known as the pancake structure on the surface. The electrolytic plasma oxidation process produces a typical annealing behavior with a low friction coefficient based on the wear test. The coating consists of nitride and nitrate/oxides titanium for nitrided samples. The surface morphology of nitrided oxide titanium coating shows a slight change in the size of the crystals and the diameter of the cavities due to the influence of nitrogen in the titanium oxide coating. The tribological behavior of the coatings showed that the wear resistance of the duplex coating (Ti/TiO2-N) and Ti/TiO2 coatings is significantly higher compared to Ti/TiN coatings and uncoated Ti samples. The polarization resistance of the Ti/TiO2-N and Ti/TiO2 coatings was 632.2 and 1451.9 kΩ cm2, respectively. These values are considerably greater than that of the uncoated Ti (135.9 kΩ cm2). Likewise, impedance showed that the Ti/TiO2-N and Ti/TiO2 coatings demonstrate higher charge transfer resistance than that of other samples due to better insulating behavior and denser structure.

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“…Plasma electrolytic oxidation (PEO), also known as micro-arc oxidation (MAO), is a surface treatment technology [ 202 , 203 , 204 , 205 ]. Metal materials are placed in the electrolyte, and a micro-arc discharge is generated by applying a high voltage, thus forming an oxide film on the metal surface.…”

Section: Surface Modification Methodsmentioning

confidence: 99%

Tribocorrosion and Surface Protection Technology of Titanium Alloys: A Review

Li,

Zhou,

2023

Materials

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Titanium alloy has the advantages of high specific strength, good corrosion resistance, and biocompatibility and is widely used in marine equipment, biomedicine, aerospace, and other fields. However, the application of titanium alloy in special working conditions shows some shortcomings, such as low hardness and poor wear resistance, which seriously affect the long life and safe and reliable service of the structural parts. Tribocorrosion has been one of the research hotspots in the field of tribology in recent years, and it is one of the essential factors affecting the application of passivated metal in corrosive environments. In this work, the characteristics of the marine and human environments and their critical tribological problems are analyzed, and the research connotation of tribocorrosion of titanium alloy is expounded. The research status of surface protection technology for titanium alloy in marine and biological environments is reviewed, and the development direction and trends in surface engineering of titanium alloy are prospected.

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Review of the role of graphene and its derivatives in enhancing the performance of plasma electrolytic oxidation coatings on titanium and its alloys

Cited by 44 publications

References 139 publications

Improvement of Mechanical and Corrosion Properties of Commercially Pure Titanium Using Alumina PEO Coatings

Improvement of Mechanical and Corrosion Properties of Commercially Pure Titanium Using Alumina PEO Coatings

Corrosion and Wear Behavior of TiO2/TiN Duplex Coatings on Titanium by Plasma Electrolytic Oxidation and Gas Nitriding

Tribocorrosion and Surface Protection Technology of Titanium Alloys: A Review

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