Ceramic coatings by microarc oxidation of Ti and Al alloys

Wang, Wen; Xin, Chang; Feng, Zaiqiang; Li, Gang; Zhang, Ruizhu; Hu, Junhua; Tang, Mingqi; Liu, Yahui; Zhang, Wei

doi:10.1016/j.surfin.2022.102260

Cited by 11 publications

(4 citation statements)

References 34 publications

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“…However, the Al 2 O 3 passivation film on the surface of the aluminum alloy is severely damaged by chlorides in seawater (Loto and Babalola, 2018; Zong et al , 2020). This makes aluminum alloys prone to pitting and crevice corrosion in seawater, posing a significant challenge to their development in the marine and shipbuilding sectors (Trzepiecinski et al , 2022; Wang et al , 2022; Zhao et al , 2023). Currently, surface treatment methods to enhance the corrosion resistance of aluminum alloys include anodic oxidation, thermal spraying, electroplating and vapor deposition (Kikuchi et al , 2021; Koivuluoto, 2022; Ghadai et al , 2023).…”

Section: Introductionmentioning

confidence: 99%

Effects of nano-SiO₂ particle addition on the structure and properties of micro-arc oxidation ceramic coatings on 7075 aluminum alloy

Tang,

Chen,

Zhang

et al. 2024

ACMM

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Purpose The purpose of this study is to investigate the influence of varying concentrations of nano-SiO2 particle doping on the structure and properties of the micro-arc oxidation (MAO) coating of 7075 aluminum alloy. This research aims to provide novel insights and methodologies for the surface treatment and protection of 7075 aluminum alloy. Design/methodology/approach The surface morphology of the MAO coating was characterized using scanning electron microscope. Energy spectrometer was used to characterize the elemental content and distribution on the surface and cross section of the MAO coating. The phase composition of the MAO coating was characterized using X-ray diffractometer. The corrosion resistance of the MAO coating was characterized using an electrochemical workstation. Findings The results showed that when the addition of nano-SiO2 particles is 3 g/L, the corrosion resistance is optimal. Originality/value This study investigated the influence of different concentrations of nano-SiO2 particles on the structure and properties of the MAO coating of 7075 aluminum alloy.

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Section: Introductionmentioning

confidence: 99%

Effects of nano-SiO₂ particle addition on the structure and properties of micro-arc oxidation ceramic coatings on 7075 aluminum alloy

Tang,

Chen,

Zhang

et al. 2024

ACMM

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“…The excellent corrosion resistance of titanium alloy comes from the dense oxide film on the surface, but the naturally formed oxide film is thin and easy to be damaged, which reduces the corrosion resistance of titanium alloy. Micro-arc oxidation can be used to generate controllable dense oxide ceramic membrane on the surface of titanium alloy to slow down the corrosion (Li et al , 2023; Wang et al , 2022; Cui et al , 2013; Chen et al , 2022).…”

Section: Introductionmentioning

confidence: 99%

Construction of superhydrophobic film on the titanium alloy welded joint and its corrosion resistance study

Zhang,

Wei

et al. 2023

ACMM

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Purpose This study aims to improve the corrosion resistance of TA2-welded joints by superhydrophobic surface modification using micro-arc oxidation technology and low surface energy substance modification. Design/methodology/approach The microstructure and chemical state of the superhydrophobic film layer were analyzed using scanning electron microscopy, energy dispersive X-ray spectroscopy, three-dimensional morphology, X-ray diffraction, X-ray photoelectron spectroscopy and Fourier transform infrared absorption spectroscopy. The influence of the superhydrophobic film layer on the corrosion resistance of TA2-welded joints was investigated using classical electrochemical testing methods. Findings The characterization results showed that the super hydrophobic TiO2 ceramic membrane was successfully constructed on the surface of the TA2-welded joint, and the construction of the super hydrophobic film greatly improved the corrosion resistance of the TA2-welded joint. Originality/value The superhydrophobic TiO2 ceramic membrane has excellent corrosion resistance. The micro nanostructure in the superhydrophobic film can intercept air to form an air layer to prevent the corrosion medium from contacting the surface, thus, improving the corrosion resistance of the sample.

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“…Wing crack, anti-wing crack and secondary crack are unified Bobet (2000) determined the tensile and shear properties of the wing and secondary cracks. Previous studies mostly focused on Intact rock sample (Liang et al, 2022;Tang et al, 2022) and single-fracture rock samples (Wong and Einstein, 2009;Yang, 2011;Liang et al, 2012;Xiao et al, 2012;Xu et al, 2013;Jin et al, 2017), while current research on fissured rock masses has developed towards multiple fissure; many achievements have been made in double-fissured rock mass research. conducted uniaxial compression tests on 45 °, 55 °, 65 °coplanar double fissured sandstone specimens and observed that the secondary coplanar crack is easy to occur in the inner end of coplanar double fissure, forming coplanar shear through.…”

Section: Introductionmentioning

confidence: 99%

Influence of coplanar double fissures on failure characteristics of sandstone and fracture mechanics analysis

2023

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The influence of fissure angles and bridge lengths on rock mechanical properties and failure was analyzed using the uniaxial compression test and the Digital Image Correlation (DIC) technique. The research findings are as follows: 1) Peak stress and elastic modulus of the samples exhibited an obvious change trend with the change in fissure angle. The fissure angle has a more significant effect on a rock’s mechanical properties than the length of the rock bridge. 2) With an increase in the fissure angle, the number of surface cracks, main failure cracks and surface spalling decreased, whereas the area of the falling blocks significantly increased. However, with an increase in bridge length, the characteristics of crack propagation and spalling are essentially the same. During crack propagation, the connection of the rock bridge is related to its fissure angle and length. 3) At a low fissure angle, the failure mode of rock samples is dominated by tensile-failure cracks; with an increase in fissure angle, the tension-damage to shear-damage crack transformation will form a mixed tensile-shear damage mode; at the same time, with an increase in bridge length, the rock bridge becomes more difficult to connect, and the local crack expansion failure changes from tensile-shear cracks to tensile cracks. 4) Stress on the coplanar double-fissured rock sample was simplified and analyzed to explain the behavior of fractures on the sample. These research results have an important guiding value for engineering optimal designs.

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Ceramic coatings by microarc oxidation of Ti and Al alloys

Cited by 11 publications

References 34 publications

Effects of nano-SiO₂ particle addition on the structure and properties of micro-arc oxidation ceramic coatings on 7075 aluminum alloy

Effects of nano-SiO₂ particle addition on the structure and properties of micro-arc oxidation ceramic coatings on 7075 aluminum alloy

Construction of superhydrophobic film on the titanium alloy welded joint and its corrosion resistance study

Influence of coplanar double fissures on failure characteristics of sandstone and fracture mechanics analysis

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Ceramic coatings by microarc oxidation of Ti and Al alloys

Cited by 11 publications

References 34 publications

Effects of nano-SiO2 particle addition on the structure and properties of micro-arc oxidation ceramic coatings on 7075 aluminum alloy

Effects of nano-SiO2 particle addition on the structure and properties of micro-arc oxidation ceramic coatings on 7075 aluminum alloy

Construction of superhydrophobic film on the titanium alloy welded joint and its corrosion resistance study

Influence of coplanar double fissures on failure characteristics of sandstone and fracture mechanics analysis

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Product

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Effects of nano-SiO₂ particle addition on the structure and properties of micro-arc oxidation ceramic coatings on 7075 aluminum alloy

Effects of nano-SiO₂ particle addition on the structure and properties of micro-arc oxidation ceramic coatings on 7075 aluminum alloy