Preparation and characterization of cerium-based conversion coating on a Fe50Mn30Co10Cr10 dual-phase high-entropy alloy

Chen, Lian; Lu, Yuning; Lin, Yi‐Ting; Lee, Yueh-Lien

doi:10.1016/j.apsusc.2021.150200

Cited by 15 publications

(4 citation statements)

References 86 publications

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“…Figure 2 shows the surface of the samples during coating at 50°C and 70°C. Under these temperature conditions, golden yellow surfaces formed, suggesting that cerium coatings formed under these conditions ( Hasannejad et al, 2008 ; Chen et al, 2021 ).…”

Section: Methodsmentioning

confidence: 97%

“…In recent years, the research community has adopted the phrase to represent any base-level rust coverage but does not always adhere to the exact processing requirements dictated by industrial processes, a fact that must be considered in the literature. Thus, the methods presented in the literature may not meet the requirements for industrial applications ( Chen et al, 2021 ; Chauhan et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical corrosion resistance of aluminum alloy 6101 with cerium-based coatings in an alkaline environment

et al. 2022

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Chromium-free materials as eco-friendly coatings with higher corrosion resistance are crucial in various industrial processes. Herein, we report the deposition of cerium-based conversion, a chromium-free, eco-friendly chemical conversion coating for aluminum alloy 6101, by the dip coating method. Immersion in cerium salt precursors assisted with hydrogen peroxide was performed for the deposition of cerium-based conversion coatings on aluminum alloy 6101 at different bathing temperatures. The electrochemical corrosion behavior was assessed in an alkaline solution of sodium hydroxide (pH 11), including mass loss measurements, free corrosion risk, polarization, and electrochemical impedance spectroscopy. X-ray diffraction and photoelectron spectroscopy analysis showed that the coatings were composed of Ce (III) and Ce (IV) oxides. Surface modifications and surface degradation of the coating and substrate after immersion in corrosive media were analyzed by scanning electron microscopy. Additionally, energy dispersive scanning analysis demonstrated the elemental composition before and after corrosion of the cerium salt conversion-based coating. The results demonstrated that selectively deposited cerium-based conversion coatings improved the corrosion resistance by up to 96% in a strong corrosive alkaline media.

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Section: Methodsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Electrochemical corrosion resistance of aluminum alloy 6101 with cerium-based coatings in an alkaline environment

et al. 2022

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“…Decorating 3D porous carbon nanotube scaffolds by MOF-derived ZnO/C nanoparticles were utilized as hosts for dendrite-free Zn-metal composite anodes, making it easier for zinc atoms to deposit on the anode and contributing to uniform deposition, [173] and improving the rechargeability of Zn anode by protecting it from side reactions and dendrites. For the same purposes, halloysite nanotubes (HNTs) (Figure 7a), [174] zincophilic interphase of 3D-printed g-C 3 N 4 , [176] cerium-based conversion densely packed film, [177] 3D interconnected ZnF 2 matrix [178] also have been used. The unique structure of HNTs gives them the ability to tolerate stripping/plating cycling without changes in morphology (Figure 7b-d).…”

Section: Artificial Protective Layermentioning

confidence: 99%

Challenges and protective strategies on zinc anode toward practical aqueous zinc‐ion batteries

Al‐Abbasi,

Zhao,

et al. 2024

Carbon Neutralization

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Over the past decades, there has been a growing interest in rechargeable aqueous Zn‐ion batteries (AZIBs) as a viable substitute for lithium‐ion batteries. This is primarily due to their low cost, lower redox potential, and high safety. Nevertheless, the progress of Zn metal anodes has been impeded by various challenges, including the growth of dendrites, corrosion, and hydrogen evolution reaction during repeated cycles that result in low Coulombic efficiency and a short lifetime. Therefore, we represent recent advances in Zn metal anode protection for constructing high‐performance AZIBs. Besides, we show in‐depth analyses and supposed hypotheses on the working mechanism of these issues associated with mildly acidic aqueous electrolytes. Meanwhile, design principles and feasible strategies are proposed to suppress dendrites' formation of Zn batteries, including electrode design, electrolyte modification, and interface regulation, which are suitable for restraining corrosion and hydrogen evolution reaction. Finally, the current challenges and future trends are raised to pave the way for the commercialization of AZIBs. These design principles and potential strategies are applicable in other metal‐ion batteries, such as Li and K metal batteries.

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“…Moreover, the doping of other metallic elements into the CeO 2 lattice could control their structure and physical properties [ 22 , 23 , 24 ], such as rare–earth elements [ 25 , 26 , 27 ], transition elements [ 28 , 29 , 30 ] and alkaline earth elements [ 31 , 32 , 33 ]. In spite of the successful synthesis of CeO 2 –based composite oxides, most of the previous reports have focused on the investigation of catalytic performances [ 34 , 35 ], transport properties [ 36 , 37 ] and the origin of room–temperature ferromagnetism [ 38 , 39 ], the theoretical data about OSC were usually quite scattered, and only a few fundamental studies on the OSC of doped CeO 2 have been reported. For example, Singh [ 40 ] et al synthesized a series of Ce 1− x M x O 2−σ (M = Zr, Ti, Pr, Y and Fe) nanocrystallites using the hydrothermal method using melamine and diethylenetriamine as complexing agents; up to 50% Zr and Y, 40% Ti, 25% Pr and 15% Fe were substituted for Ce 4+ in CeO 2 , and Ce 0.85 Fe 0.15 O 1.85 showed a higher OSC and higher CO conversion at a lower temperature than Ce 1−x Zr x O 2 .…”

Section: Introductionmentioning

confidence: 99%

Enhanced Oxygen Storage Capacity of Porous CeO2 by Rare Earth Doping

Gao

Hou

et al. 2023

Molecules

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CeO2 is an important rare earth (RE) oxide and has served as a typical oxygen storage material in practical applications. In the present study, the oxygen storage capacity (OSC) of CeO2 was enhanced by doping with other rare earth ions (RE, RE = Yb, Y, Sm and La). A series of Undoped and RE–doped CeO2 with different doping levels were synthesized using a solvothermal method following a subsequent calcination process, in which just Ce(NO3)3∙6H2O, RE(NO3)3∙nH2O, ethylene glycol and water were used as raw materials. Surprisingly, the Undoped CeO2 was proved to be a porous material with a multilayered special morphology without any additional templates in this work. The lattice parameters of CeO2 were refined by the least–squares method with highly pure NaCl as the internal standard for peak position calibrations, and the solubility limits of RE ions into CeO2 were determined; the amounts of reducible–reoxidizable Cen+ ions were estimated by fitting the Ce 3d core–levels XPS spectra; the non–stoichiometric oxygen vacancy (VO) defects of CeO2 were analyzed qualitatively and quantitatively by O 1s XPS fitting and Raman scattering; and the OSC was quantified by the amount of H2 consumption per gram of CeO2 based on hydrogen temperature programmed reduction (H2–TPR) measurements. The maximum [OSC] of CeO2 appeared at 5 mol.% Yb–, 4 mol.% Y–, 4 mol.% Sm– and 7 mol.% La–doping with the values of 0.444, 0.387, 0.352 and 0.380 mmol H2/g by an increase of 93.04, 68.26, 53.04 and 65.22%. Moreover, the dominant factor for promoting the OSC of RE–doped CeO2 was analyzed.

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Preparation and characterization of cerium-based conversion coating on a Fe50Mn30Co10Cr10 dual-phase high-entropy alloy

Cited by 15 publications

References 86 publications

Electrochemical corrosion resistance of aluminum alloy 6101 with cerium-based coatings in an alkaline environment

Electrochemical corrosion resistance of aluminum alloy 6101 with cerium-based coatings in an alkaline environment

Challenges and protective strategies on zinc anode toward practical aqueous zinc‐ion batteries

Enhanced Oxygen Storage Capacity of Porous CeO2 by Rare Earth Doping

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