One-step plasma electrolytic oxidation with Graphene oxide for Ultra-low porosity Corrosion-resistant TiO2 coatings

Guo, Ziwei; Yang, Zhou; Chen, Yongnan; Li, Hongzhan; Zhao, Qinyang; Xu, Yiku; Zhan, Haifei; Hao, Jian; Zhao, Yongqing

doi:10.1016/j.apsusc.2022.153477

Cited by 25 publications

(3 citation statements)

References 44 publications

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“…Micro-arc oxidation technology can grow a layer of coating in situ with high hardness and wear and corrosion resistance on the surface of valve metals such as titanium, which can significantly improve the surface properties of light metals. In addition, PEO can adjust surface properties such as hardness, elastic modulus, wettability, porosity, roughness, chemical composition, and crystallinity [ 210 , 211 , 212 , 213 , 214 ].…”

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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Section: Surface Modification Methodsmentioning

confidence: 99%

Tribocorrosion and Surface Protection Technology of Titanium Alloys: A Review

Li,

Zhou,

2023

Materials

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“…There is a high-velocity explosive coating with gas velocity up to 3000 m s −1 and molten particle velocity up to 800 m s −1 . These coatings have low porosity, which can be as minimal as 1% [14]. Several cost-effective methods are accessible, such as electric arc spraying, which generates high-temperature coatings of up to 4000 °C with strong adhesion to molten particles.…”

Section: Introductionmentioning

confidence: 99%

Production of a double cermet coating to treatment of the turbine blades

Antar,

Darweesh,

Ridha

2024

Eng. Res. Express

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Turbine blades often experience external failures, such as cracks and high pores, during operation. To address these issues, a method known as thermal spraying by flame is employed to apply cermet materials consisting of metal and ceramics onto the blades. The process involved incorporating manganese (Mn) into a chromium oxide (Cr2O3) base in varying proportions (3,6,9,12,15)%. Prior to this, the two mixtures underwent several preparatory steps, including being mixed with a micro-mill for two hours and then dried at 80°C for thirty minutes to remove any moisture present in the laboratory. The coating bases were prepared from an out-of-service turbine bit and shaped into squares with a side length of 1cm. The bases were then roughened and indented using a paint gun. The resulting models were sintered at a temperature of 1000°C for two hours. A number of structural and physical tests were carried out for the painted models before and after thermal sintering. Scanning electron microscope tests revealed crystalline regularity and lattice consistency of the outer surface especially at 15%Mn. Regarding the findings of the actual density, it was observed that the inclusion of manganese leads to a gradual enhancement in density with each subsequent addition. However, there was a consistent decrease in real porosity and water absorption, resulting in lower values at 15%. The hardness and adhesion strength exhibited significant improvements, increasing by approximately 15%. Conversely, the addition of the stiffener led to a continuous decrease in thermal conductivity. Thus, it was determined that the optimal coating parameters for achieving favorable outcomes were a coating distance of 16cm, a coating angle of 90°, and thermal sintering at 1000°C.

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“…In recent years, low porosity ceramic films were successfully fabricated by coating polymer materials on the surface of PEO coatings or directly adding filler particles to the electrolyte [23]. However, due to the agglomeration of particles additive, and the differences in the properties of covered films and PEO coatings [24], there are obvious interfaces between covered layers and PEO coatings, and between particles additive and PEO coatings, which limits the application of PEO ceramic coatings.…”

Section: Introductionmentioning

confidence: 99%

Influence of Na₂WO₄ additive in electrolyte on properties of plasma electrolytic oxidation coatings on H62 brass

Guan¹,

Meng²,

Wang³

et al. 2022

Surf. Topogr.: Metrol. Prop.

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In order to improve the corrosion resistance of brass treated by plasma electrolytic oxidation (PEO), Na2WO4 additive was introduced into a mixed electrolyte of sodium silicate and sodium hydroxide, and a composite oxide coating was formed on the surface of H62 brass. The effect of Na2WO4 concentration from 0 to 3 g/L in silicate-based electrolyte on the properties of PEO coatings was investigated by SEM, EDS, XRD and electrochemical workstation. The results show that the element of W in the form of metal oxides can be successfully incorporated into PEO coatings. The addition of Na2WO4 can significantly improve the corrosion resistance of PEO coatings, and the best corrosion resistance is obtained when the addition amount is 1.0 g/L.

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One-step plasma electrolytic oxidation with Graphene oxide for Ultra-low porosity Corrosion-resistant TiO2 coatings

Cited by 25 publications

References 44 publications

Tribocorrosion and Surface Protection Technology of Titanium Alloys: A Review

Tribocorrosion and Surface Protection Technology of Titanium Alloys: A Review

Production of a double cermet coating to treatment of the turbine blades

Influence of Na₂WO₄ additive in electrolyte on properties of plasma electrolytic oxidation coatings on H62 brass

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One-step plasma electrolytic oxidation with Graphene oxide for Ultra-low porosity Corrosion-resistant TiO2 coatings

Cited by 25 publications

References 44 publications

Tribocorrosion and Surface Protection Technology of Titanium Alloys: A Review

Tribocorrosion and Surface Protection Technology of Titanium Alloys: A Review

Production of a double cermet coating to treatment of the turbine blades

Influence of Na2WO4 additive in electrolyte on properties of plasma electrolytic oxidation coatings on H62 brass

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Product

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Influence of Na₂WO₄ additive in electrolyte on properties of plasma electrolytic oxidation coatings on H62 brass