Corrosion and wear properties of h-BN-modified TC4 titanium alloy micro-arc oxide coatings

Chen, X W; Ren, Ping; Zhang, D F; Hu, Jing; Wu, Chaohua; Liao, Dandan

doi:10.1680/jsuin.21.00070

Cited by 9 publications

(5 citation statements)

References 27 publications

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“…It was observed that the corrosion resistance was primarily influenced by the thickness and density of the coatings 27 . This is because coatings that are relatively dense and thicker have the ability to inhibit corrosion caused by the entry of Cl − into the coatings 28,29 . When added 0.6 g·L −1 cobalt oxide, the thickness and density reached their highest levels, resulting in the best corrosion resistance.…”

Section: Resultsmentioning

confidence: 99%

“…27 This is because coatings that are relatively dense and thicker have the ability to inhibit corrosion caused by the entry of Cl − into the coatings. 28,29 When added 0.6 g⋅L −1 cobalt oxide, the thickness and density reached their highest levels, resulting in the best corrosion resistance. The I corr and corrosion rate MAO coatings were lower than that of the substrate.…”

Section: Electrochemical Behaviormentioning

confidence: 99%

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Effect of cobalt oxide on characteristics of micro‐arc oxidation coatings on TC11 alloy

Zhu,

Lan,

Wang

et al. 2024

Int J Applied Ceramic Tech

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In order to improve the comprehensive performance of TC11 titanium alloy and make it more widely used in the field of oil and gas wells, cobalt oxide micro‐powder from 0 to 0.8 g·L−1 was added in the electrolyte. The effects of cobalt oxide micro‐powder concentration on properties of micro‐arc oxidation (MAO) coatings were analyzed by scanning electron microscopy, X‐ray diffraction, X‐ray photoelectron spectroscopy, and electrochemical workstation. With cobalt oxide micro‐powder increased, the oxide voltage increased, and the discharge coating micropores became more uniform. The increase in thickness and hardness also improved corrosion resistance. The comprehensive performance after added 0.6 g·L−1 of cobalt oxide was the best, with a doubling increase in thickness and hardness, reaching 32.1 µm and 721.2 HV, respectively. The corrosion rate reduced to 4.19 × 10−10 mm·a−1, which reduced by three orders of magnitude. In addition, the substrates and samples prepared with 0.6 g·L−1 cobalt oxidation were used for the erosion corrosion tests in different NaCl solutions, and it was found that the weight loss and rate of the MAO sample (slight corrosion) were lower than substrates, indicating that the cobalt oxide doped coatings had better corrosion resistance.

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Section: Resultsmentioning

confidence: 99%

Section: Electrochemical Behaviormentioning

confidence: 99%

Effect of cobalt oxide on characteristics of micro‐arc oxidation coatings on TC11 alloy

Zhu,

Lan,

Wang

et al. 2024

Int J Applied Ceramic Tech

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“…In Table 1, β a and β c are the polarization slopes of the anode and cathode, respectively; R p is the polarization resistance, which can be calculated from I corr , β a , and β c by the Stern–Geary equation 30 . In addition, C R denotes the corrosion rate, the magnitude of which is directly related to I corr 5,31 . It can be seen from Table 1 that during the change of yttrium nitrate concentration from 0 to 2.0 g/L, the E corr still increases first and then decreases, whereas the change of I corr shows the opposite trend, which indicates that the addition of Y(NO 3 ) 3 ·6H 2 O can improve the barrier property of the coating to a certain extent.…”

Section: Resultsmentioning

confidence: 99%

“…30 In addition, C R denotes the corrosion rate, the magnitude of which is directly related to I corr . 5,31 It can be seen from Table 1 that during the change of yttrium nitrate concentration from 0 to 2.0 g/L, the E corr still increases first and then decreases, whereas the change of I corr shows the opposite trend, which indicates that the addition of Y(NO 3 ) 3 ⋅6H 2 O can improve the barrier property of the coating to a certain extent. When 1.5 g/L yttrium nitrate was added to the electrolyte, the E corr and I corr of the specimen reached the maximum and minimum value, respectively.…”

Section: Potentiodynamic Polarization Curvesmentioning

confidence: 98%

Role of rare‐earth Y addition on formation and anticorrosion properties of MAO coating on 2024 aviation aluminum alloy

Zhang

Ran

Chen

et al. 2022

Int J Applied Ceramic Tech

Self Cite

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Different ceramic coatings were prepared on the surface of 2024 aviation aluminum alloy using micro-arc oxidation process in silicate based electrolyte combined with the rare earth based compound Y(NO 3 ) 3 ⋅6H 2 O. The thickness, hardness of the coating and conductivity of electrolyte were tested using relative devices, morphology and chemical composition were studied by scanning electron microscope and energy dispersive spectroscope, respectively. The phase composition of the coatings was characterized by X-ray diffraction and X-ray photoelectron spectroscopy. Furthermore, the corrosion resistance of the coating was evaluated by an electrochemical workstation. The results showed that the addition of Y(NO 3 ) 3 ⋅6H 2 O could improve the thickness and hardness of the coating. The morphological observation of the coating showed that Y(NO 3 ) 3 ⋅6H 2 O was successfully incorporated into the ceramic layer and that the coating had the smallest porosity at 1.5 g/L Y(NO 3 ) 3 . The phase composition of the coating was mainly γ-Al 2 O 3 , α-Al 2 O 3 , SiO 2 , Y 2 O 3 , and AlPO 4 . The corrosion resistance of coating in simulated seawater with the addition of Y(NO 3 ) 3 ⋅6H 2 O was significantly improved, and the values of |Z| 0.01 Hz and corrosion rate of the coating reached the maximum and minimum at 1.5 g/L Y(NO 3 ) 3 , which were 5.63 × 10 5 Ω cm 2 and 7.444 × 10 −4 mm/a, respectively.

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“…In order to overcome the weakness of low hardness and poor wear resistance of titanium alloy, surface modification technology is widely used to prepare the coating on titanium alloy to improve the wear resistance of titanium alloy. At present, the commonly used surface modification technologies include ion implantation [1], plasma spraying [2,3], vapor deposition [4,5], micro-arc oxidation [6], laser alloying [7], laser cladding [8,9], etc. Among them, laser cladding is of high significance because of its advantages of metallurgical bonding with the matrix and adjustable coating thickness.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Wear Resistance of Ti5Si3/Ti3Al Composite Coatings Prepared by Laser Cladding on TA2 Titanium Alloy

Huang

2023

Lubricants

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In order to improve the wear resistance of titanium alloy, a Ti5Si3/Ti3Al composite coating with improved wear resistance was successfully prepared by laser cladding TA2 titanium alloy using the double-layer presetting method of Ti-63 wt.% Al mixed powder layer/Si powder layer. The microstructure, phase composition and wear resistance of the coating were studied using X-ray diffraction (XRD), scanning electron microscopy (SEM) and pine-disk friction and wear method. The results show that the coating is mainly composed of the Ti5Si3 primary phase and Ti5Si3/Ti3Al eutectic structure. The microhardness of the coating is higher than that of the matrix. The average microhardness of the coating is about 668 HV0.1, which is 3.34 times that of the matrix. The coating significantly improves the wear resistance of the TA2 matrix, and the mass wear rate is 1/5.79 of that of the TA2 matrix. The main wear mechanisms of the coating are abrasive wear, adhesive wear and oxidative wear, whereas the main wear mechanisms of the TA2 matrix are adhesive wear and oxidative wear.

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Corrosion and wear properties of h-BN-modified TC4 titanium alloy micro-arc oxide coatings

Cited by 9 publications

References 27 publications

Effect of cobalt oxide on characteristics of micro‐arc oxidation coatings on TC11 alloy

Effect of cobalt oxide on characteristics of micro‐arc oxidation coatings on TC11 alloy

Role of rare‐earth Y addition on formation and anticorrosion properties of MAO coating on 2024 aviation aluminum alloy

Microstructure and Wear Resistance of Ti5Si3/Ti3Al Composite Coatings Prepared by Laser Cladding on TA2 Titanium Alloy

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