Influence of Graphene on Microstructure and Corrosion and Wear Resistance of Micro-Arc Oxidation Coatings on D16T Al Alloy Drill Pipe

Liu, Wanying; He, Weidong; Jiang, Hengyi; Wang, Qi; Chen, Long; Yang, Zhong; Lin, Yanfeng

doi:10.1007/s11665-021-05727-y

Cited by 14 publications

(7 citation statements)

References 36 publications

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“…In addition, the graphene is deposited into the micro-arc discharge channel continuously, which can fill the micro holes and cracks during melting, cooling, and nucleation processes. Thus, the roughness of the coating layer is reduced [18]. Graphene's effect on the roughness of the coating can also be confirmed from the 3D morphology shown in Figure 2.…”

Section: Roughness and Thicknessmentioning

confidence: 52%

Effects of Graphene on the Wear and Corrosion Resistance of Micro-Arc Oxidation Coating on a Titanium Alloy

Zhang

Lű

et al. 2021

Metals

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In order to improve the wear and corrosion resistance of micro-arc oxidation (MAO) coating on a Ti-5Al-1V-1Sn-1Zr-0.8Mo alloy, 0–0.20 g/L graphene was added to the electrolyte to prepare micro-arc oxidation coating. The thickness, roughness, micro-morphology, and composition of the MAO coating were characterized, and the wear and corrosion resistance of the coating was tested and analyzed. The results show that with 0.05 g/L of graphene in the electrolyte, the roughness of the coating decreased from 56.76 μm to 31.81 μm. With the increase in the addition of graphene, the microstructure of the coating became more compact, the diameter of micro-holes and micro-cracks decreased, and the corrosion resistance of the coating improved. The wear tests showed that the mass loss of the coating at the early wear stage (0~100 revolutions) was greater than that at the later stage (100~250 revolutions), and the wear resistance of the coating obtained by the addition of 0.10 g/L of graphene was the highest. With 0.10 g/L of graphene, the adhesion force between the coating and the substrate alloy is the largest, reaching 57.1 N, which is 9.98 N higher than that without graphene. After salt spray corrosion for 480 h, the coating with graphene has better corrosion resistance than that of a graphene-free coating.

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Section: Roughness and Thicknessmentioning

confidence: 52%

Effects of Graphene on the Wear and Corrosion Resistance of Micro-Arc Oxidation Coating on a Titanium Alloy

Zhang

Lű

et al. 2021

Metals

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“…This was because with the addition of Y(NO 3 ) 3 ·6H 2 O, the reaction in the discharge channel became more intense, resulting in an increase in temperature, and more melts were deposited on the coating. The large cooling rate on the side near the electrolyte favored the generation of γ‐Al 2 O 3 phase, whereas the relatively slow cooling rate of the melt near the substrate side favored the generation of α‐Al 2 O 3 phase 24 …”

Section: Resultsmentioning

confidence: 99%

“…The large cooling rate on the side near the electrolyte favored the generation of γ-Al 2 O 3 phase, whereas the relatively slow cooling rate of the melt near the substrate side favored the generation of α-Al 2 O 3 phase. 24…”

Section: Analysis Of the Phase Composition Of Coatingsmentioning

confidence: 99%

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

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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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“…D16T aluminum alloy samples were treated by a pulsed DC power supply (t on :t off = .4 ms:3.6 ms) under a constant voltage regime (500 V) for 10 min. Based on the previous research, 28,29 the base electrolyte and the addition concentration of graphene have been optimized. Meanwhile, the good performance of the aluminum alloy PEO coating can be obtained when 2-g/L graphene was added into the electrolyte.…”

Section: Materials and Experimental Processmentioning

confidence: 99%

Effect of graphene on the microstructure and corrosion resistance of PEO coating formed on D16T aluminum alloy

Liu

Xie

et al. 2022

Int J Applied Ceramic Tech

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Incorporated graphene coating was successfully prepared on D16T aluminum alloy by plasma electrolytic oxidation (PEO) technology, and the effect of graphene on the microstructure, corrosion resistance, and wettability of the coating was investigated. Microstructure, composition, and morphology were studied by transmission electron microscope, confirming that graphene was successfully incorporated into the coating with pancake-like and embedded mode. The thickness and microhardness of the coating with graphene (G2) increased, whereas roughness and porosity reduced due to the incorporation of graphene, compared to the coating without graphene (G0). The resistive arc radius of G2 is obviously increased. The real impedance value of G2 is four times than that of G0. The resistance (R 1 ) of G0 and G2 are 3708 and 7533 Ω cm 2 , respectively. The resistance (R 2 ) of G0 and G2 are 2.508E5 and 7.752E5 Ω cm 2 , respectively. The contact angle of G2 under three liquid droplets was maximum, showing minimal surface-free energy (36.8 mJ/m 2 ). Formation water showed the most obvious effect on the wettability of the coating compared to the distilled water and sodium chloride solution. Results verified that graphene in PEO coating significantly improved the microstructure of the coating and enhanced the hydrophobic performance and corrosion resistance of the coating.

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Influence of Graphene on Microstructure and Corrosion and Wear Resistance of Micro-Arc Oxidation Coatings on D16T Al Alloy Drill Pipe

Cited by 14 publications

References 36 publications

Effects of Graphene on the Wear and Corrosion Resistance of Micro-Arc Oxidation Coating on a Titanium Alloy

Effects of Graphene on the Wear and Corrosion Resistance of Micro-Arc Oxidation Coating on a Titanium Alloy

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

Effect of graphene on the microstructure and corrosion resistance of PEO coating formed on D16T aluminum alloy

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