Improvement in corrosion resistance of WE43 magnesium alloy by the electrophoretic formation of a ZnO surface coating

Qu, Jun‐e; Ascencio, M.; Jiang, Li-Min; Omanovic, Sasha; Yang, Lixia

doi:10.1007/s11998-019-00212-7

Cited by 16 publications

(6 citation statements)

References 45 publications

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“…These two main core levels that are characteristic peaks at BEs of 779.4 and 780.6 eV correspond to Co 2p 3/2 and a peak at 795.2 eV attributed to Co 2p 1/2 , which confirms the presence of Co 3+ in the NCO/GO nanocomposite. , More importantly, the absence of a shakeup peak at about 790 eV indicates the absence of Co 2+ , validating that the Co atoms were mainly forming the NdCoO 3 phase . Deconvolution of the O 1s peak represents the lattice oxygen species (528.4 eV) and surface adsorbed oxygen species (531.1 eV) from hydroxyl or carbonate groups, which reveals the formation of the perovskite phase (Figure e). , The spin–orbit peak in the C 1s spectrum (Figure f) deconvoluted into three peaks with the BE values of 284.7, 285.5, 286.4, 288.3, and 289.5 eV corresponding to SP 2 -bonded CC, SP 3 -bonded C–C, epoxide, hydroxyl (C–O/C–OH), carbonyl (CO), and carboxyl (O–CO), respectively. , According to the results, the successful construction of the NCO and GO hybrid composite was established with the peaks of Nd, Co, O, and C spectra with the corresponding electronic state.…”

Section: Resultsmentioning

confidence: 67%

“…48 Deconvolution of the O 1s peak represents the lattice oxygen species (528.4 eV) and surface adsorbed oxygen species (531.1 eV) from hydroxyl or carbonate groups, which reveals the formation of the perovskite phase (Figure 2e). 49,50 The spin−orbit peak in the C 1s spectrum (Figure 2f) deconvoluted into three peaks with the BE values of 284. 51,52 According to the results, the successful construction of the NCO and GO hybrid composite was established with the peaks of Nd, Co, O, and C spectra with the corresponding electronic state.…”

Section: Resultsmentioning

confidence: 99%

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Novel Design of Perovskite-Structured Neodymium Cobalt Oxide Nanoparticle-Embedded Graphene Oxide Nanocomposites as Efficient Active Materials of Energy Storage Devices

Koventhan,

Pandiyarajan,

Chen

et al. 2023

ACS Appl. Mater. Interfaces

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In recent years, electrochemical supercapacitors are expected to represent the future of energy storage device technology. Specifically, the excellent electrochemical performance with long cycle life, high energy, and power density is considered an essential criterion for commercial applications. Herein, we constructed a novel composite of neodymium cobalt oxide-encapsulated graphene oxide nanocomposite (NCO/GO) via a simple and robust method for a symmetric supercapacitor (SSC) device. The prepared samples were securitized by X-ray diffraction, Fourier transform infrared spectroscopy, Raman, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, high-resolution transmission electron microscopy, and Brunauer–Emmett–Teller analysis. The as-synthesized NCO/GO is deposited on nickel foam (NF) and used as a supercapacitor electrode (NCO/GO/NF), which exhibits superior specific capacitance (C s) of 1080.92 F g–1 at 1 A g–1 and fantastic cycling life with ∼89.42% retention after 10,000 cycles at 10 A g–1 in 1.0 M KOH aqueous electrolyte. A tremendous electrochemical performance of the hybrid nanocomposite electrode is obtained from the good redox activity and synergistic effects of the NCO spherical-like nanoparticles combined with the GO nanosheets. Furthermore, the assembled SSC device delivers significantly enhanced power density (932.93 Wh kg–1) and energy density (210.42 mWh kg–1). Moreover, the SSCs exhibit excellent cycling stability with ∼82.19% capacity retaining over 10,000 charge/discharge cycles. Remarkably, a 1.8 V red light-emitting diode (LED) can be lit up for more than 10 min by series connection SSCs. Thus, the obtained results indicated that the NCO/GO/NF//NCO/GO/NF symmetric device has a robust and cost-effective electrode material for high-performance supercapacitor systems.

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Section: Resultsmentioning

confidence: 67%

Section: Resultsmentioning

confidence: 99%

Novel Design of Perovskite-Structured Neodymium Cobalt Oxide Nanoparticle-Embedded Graphene Oxide Nanocomposites as Efficient Active Materials of Energy Storage Devices

Koventhan,

Pandiyarajan,

Chen

et al. 2023

ACS Appl. Mater. Interfaces

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“…The total signal strength of Mg 1s peaks (Figure 5c) measured on different sample surfaces is close. In addition to two subpeaks according to corrosion product magnesium hydroxide and the dehydrated product magnesium oxide, respectively, [ 45,46 ] a new subpeak of Mg‐org can be distinguished on both EDTA‐ZnNa 2 ‐treated and C 6 H 11 NaO 7 ‐treated sample surfaces, which is formed by chemical bonding of organic parts of the inhibitors with Mg elements on the top surface.…”

Section: Resultsmentioning

confidence: 99%

“…[37,38] The inductive loop is related to the relaxation of coverage due to the adsorption of intermediates. [39] So an electrical equivalent circuit (EEC) model as shown in Figure 3c is used to fit the EIS data. Here, R s is the electrolyte resistance, R f the resistance for electrolyte transport through the barrier film on the substrate, R ct the charge transfer resistance of the interfacial reaction, CPE f the constant phase element of the barrier film, CPE dl the double-layer capacitance, R L and L the resistance and inductance, respectively.…”

Section: Eis Measurementsmentioning

confidence: 99%

Effect of sodium‐zinc EDTA and sodium gluconate as electrolyte additives on corrosion and discharge behavior of Mg as anode for air battery

Luo

Liu

et al. 2022

Materials & Corrosion

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The corrosion inhibiting performance of EDTA‐ZnNa2 and C6H11NaO7 for pure magnesium in a 3.5 wt% NaCl electrolyte was investigated through electrochemical tests and surface microanalysis. And their effect on discharge behavior of Mg anode used for air battery was evaluated through constant‐current discharging tests. The inhibition performance varied with different additive concentrations and the maximum inhibition efficiency values were obtained as 87.11% and 77.70% by using 0.005 M EDTA‐ZnNa2 and 0.01 M C6H11NaO7, respectively. Both the presence of 0.005 M EDTA‐ZnNa2 and 0.01 M C6H11NaO7 in electrolyte improved the battery performance, especially under a smaller discharging current. The discharge platform time was extended from 15.66 to 22.57 h and 20.04 h by adding EDTA‐ZnNa2 and C6H11NaO7 at discharging current density of 2 mA cm−2 respectively, accompanied by a negligible battery voltage drop of about 20 mV. In the case of EDTA‐ZnNa2, zinc hydroxide formed by the dissociated zinc ions cooperated with magnesium hydroxide and organic adsorption film for corrosion inhibition. Therefore, by using it a more pronounced discharge performance was achieved than C6H11NaO7.

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“…Therefore, ZnO nanoparticles are a common packing, they are low cost [18][19][20], harmless to the environment [19], and have excellent photoelectric performance and rich form. Therefore, they have a broad application prospect in coatings [21][22][23], sensors [24,25], photoelectric material [26][27][28], medicine [20], and many other fields [29]. For example, Zahra et al [30] used mixed ZnO/GO nanostructures to modify the surface of low carbon steel before acrylic resin coating.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Waterborne UV Lacquer Product Modified by Zinc Oxide with Flower Shape

Yang

et al. 2020

Polymers

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In this paper, the waterborne UV lacquer product (WUV) was used as the main raw material, zinc oxide (ZnO) was used as the additive, and the stearic acid as the surface modifier. According to the method of spraying coating on the surface of poplar wood (Populus tomentosa), a simple and efficient preparation method was carried out to generate a super-hydrophobic surface and enhance the erosion resistance of the coating. By testing, the contact angle (CA) of water on the coating surface can reach 158.4°. The microstructure and chemical composition of the surface of coatings were studied by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD). The results showed that under acidic conditions, the non-polar long chain alkyl group of stearic acid vapor molecule reacted with the hydroxyl group in acetic acid, the metal ions of the ZnO were displaced to the stearic acid and generated globular zinc stearate (C36H70O4Zn). The hydrophobic groups –CH3 were grafted to the surface of zinc stearate (ZnSt2) particles and the micro/nano level of multistage flower zinc stearate coarse structure was successfully constructed on the surface of poplar wood, which endowed it with superhydrophobic properties. It is shown that the coating has good waterproof and erosion resistance.

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Improvement in corrosion resistance of WE43 magnesium alloy by the electrophoretic formation of a ZnO surface coating

Cited by 16 publications

References 45 publications

Novel Design of Perovskite-Structured Neodymium Cobalt Oxide Nanoparticle-Embedded Graphene Oxide Nanocomposites as Efficient Active Materials of Energy Storage Devices

Novel Design of Perovskite-Structured Neodymium Cobalt Oxide Nanoparticle-Embedded Graphene Oxide Nanocomposites as Efficient Active Materials of Energy Storage Devices

Effect of sodium‐zinc EDTA and sodium gluconate as electrolyte additives on corrosion and discharge behavior of Mg as anode for air battery

Preparation and Characterization of Waterborne UV Lacquer Product Modified by Zinc Oxide with Flower Shape

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