Enhancing structure integrity and corrosion resistance of Mg alloy by a two-step deposition to avoid F ions etching to nano-SiO2 reinforcement

Li, Dan; Chen, Fang; Xie, Zhihui; Shan, Shiyao; Zhong, Chuan‐Jian

doi:10.1016/j.jallcom.2017.01.204

Cited by 57 publications

(19 citation statements)

References 62 publications

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“…are ascribed to the characteristic diffraction peaks of Mg (PDF 35-0821). These small and weak peaks at 18.59°, 38.02°, 58.64°, and 62.07° are the characteristic peaks of Mg(OH) 2 (PDF 07-0239) [ 19 , 20 ]. The XRD patterns of all coatings are almost identical and two new peaks appear at ca.…”

Section: Resultsmentioning

confidence: 99%

In-Situ Growth of NiAl-Layered Double Hydroxide on AZ31 Mg Alloy towards Enhanced Corrosion Protection

Jiang

et al. 2018

Nanomaterials

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NiAl-layered double hydroxide (NiAl-LDH) coatings grown in-situ on AZ31 Mg alloy were prepared for the first time utilizing a facile hydrothermal method. The surface morphologies, structures, and compositions of the NiAl-LDH coatings were characterized by scanning electron microscopy (SEM), three dimensional (3D) optical profilometer, X-ray diffractometer (XRD), Fourier transform infrared spectrometer (FT-IR), and X-ray photoelectron spectroscopy (XPS). The results show that NiAl-LDH coating could be successfully deposited on Mg alloy substrate using different nickel salts, i.e., carbonate, nitrate, and sulfate salts. Different coatings exhibit different surface morphologies, but all of which exhibit remarkable enhancement in corrosion protection in 3.5 wt % NaCl corrosive electrolyte. When nickel nitrate was employed especially, an extremely large impedance modulus at a low frequency of 0.1 Hz (|Z|f = 0.1 Hz), 11.6 MΩ cm2, and a significant low corrosion current density (jcorr) down to 1.06 nA cm−2 are achieved, demonstrating NiAl-LDH coating’s great potential application in harsh reaction conditions, particularly in a marine environment. The best corrosion inhibition of NiAl-LDH/CT coating deposited by carbonate may partially ascribed to the uniform and vertical orientation of the nanosheets in the coating.

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Section: Resultsmentioning

confidence: 99%

In-Situ Growth of NiAl-Layered Double Hydroxide on AZ31 Mg Alloy towards Enhanced Corrosion Protection

Jiang

et al. 2018

Nanomaterials

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“…The lack of a microscale reaction mechanism limits essential understanding of performance and failure models of the LIBs, as well as the optimal design of new materials for the next generation of high-performance LIBs. In terms of the characterization of the morphologies and structural evolution of the LIB electrode materials, many regular analytical and diagnostic techniques in material investigations, such as scanning electron microscopy (SEM) and X-ray diffraction (XRD) in corrosion, [62][63][64] have been adopted in LIB studies. The morphologies can be imaged by SEM, 59,[65][66][67][68][69][70] TEM, [70][71][72][73][74][75][76] and atomic force microscopy (AFM).…”

Section: In Situ Tem and In Situ Tem-electrochemistry Techniquesmentioning

confidence: 99%

Review—Promises and Challenges of In Situ Transmission Electron Microscopy Electrochemical Techniques in the Studies of Lithium Ion Batteries

Xie

Jiang

Zhang³

2017

J. Electrochem. Soc.

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In situ transmission electron microscopy (TEM) electrochemistry with high-resolution characterization of morphology and microstructure is a powerful and practical technique to observe and analyze the lithiation and delithiation process of Li ions in the cathode and anode for comprehensively understanding the performance of Li-ion batteries (LIB), the formation of a solid electrolyte interphase (SEI), and the aging process during the investigation of LIBs. This review mainly focuses on the development and achievements of in situ TEM electrochemical techniques in investigating the mechanism of LIBs in recent years. Three types of in situ TEM electrochemical holders that are used commonly in the characterization of LIBs are presented. A calculation method for quantitative determination of the lithium diffusion coefficient (D Li ) in electrodes with in situ TEM electrochemical technique is also mentioned. Finally, the challenges, limitations, and future work for during application of the in situ TEM-electrochemistry technique are further discussed and reviewed from the perspective of morphology, influence of electron radiation on the decomposition of electrolyte, configuration of electrode, and determination of The heavy dependence on fossil fuels in modern society has brought serious environmental problems including air pollution, water pollution, CO 2 emissions, and global warming.1-3 These issues, as well as the foreseeable worldwide energy shortage, strongly demand renewable alternative sources and clean energy such as solar cells, hydroelectric power, and wind energy, which require advances in electrical energy conversion and storage technologies.4-6 Electrochemical devices such as batteries and electrochemical capacitors to store and restore electrical energy are possible solutions in the near-term because the conversion between electrical and chemical energy shares a common carrier (electrons).2,7-9 Moreover, compared to traditional batteries, lithium-ion batteries (LIBs) are more compact, portable, and have a high gravimetric capacity and power density, owing to the lighter molecular weight of lithium. 10,11 LIBs are widely used in present-day portable electronic gadgets such as mobile phones, laptops, tablet computers, and video camcorders, and the medical and aerospace industries for storing photovoltaic-generated dc electricity.12,13 Although possessing many advantages and in high demand, radical progress of such devices like LIBs has not been attained as yet because of their intrinsic complexity.14,15 There are many concurrent electrochemical, physical, and mechanical processes during their operation, 14,16 therefore, to enhance the overall properties of LIBs with high energy-density and long cycle-life, these aforementioned processes should operate in a predictable way across multiple environments.14 Until now, many basic principles regarding battery operation, including atomic conversion mechanism, electrode degradation, and evolution of electrolyte, are poorly understood.14 Recently, in situ electroch...

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“…The typical SEM and TEM micrographs of the MgAl-LDH precipitation are presented in According to results and analyses of the 1 H NMR, 13 C NMR, MS, and FT-IR spectra (given in the Support Information, Figs. S1-S4 and Tables S1-S3), the NTA was synthesized successfully.…”

Section: Resultsmentioning

confidence: 99%

“…3085.21 (cm −1 ), 1640.62 (cm −1 ), 1473.01 (cm −1 ), 1 827.61 (cm −1 ) and other FT-IR peaks indicate that the organic compound has a thiophene ring. Results of binding to 1 H NMR and 13 C NMR spectra: 1 H NMR (ppm): δ 0.91-0.88 (t, 3H), 1.36-1.27 (m, 26H), 1.81 (m, 2H), 3.50-3.46 (t, 2H), 2 13 C NMR (ppm): δ 63.69 31.90, 29.73, 29.67, 29.63, 29.58, 29.53, 29.45, 29.40, 29.34, 29.25, 29.17, 26.30, 22.92, 22.67, 14.14 indicate a C-16 alkyl linear group attached to N; 1 H NMR (ppm): δ 5.13 (s, 2H), 13 C NMR (ppm): δ 61.63 represent a methylene group attached to the N and thiophene ring; 1 H NMR (ppm): δ 7.96-7.95 ( m, 1H), 7.45-7.43 (m, 1H), 7.33-7.32 (m, 1H), 13…”

Section: Resultsmentioning

confidence: 99%

“…The most effective way to isolate the substrate from the corrosive medium by forming a complete physical barrier, namely coating, through different methods [8]. Many coatings have been developed through various approaches, e.g., chemical conversion films [9,10], ceramic membranes developed by microarc oxidation [11,12], metallic coatings developed by electroless plating and electroplating [13][14][15][16], and organic coatings developed by sol-gel method [17,18]. Except for chromium conversion film that has been strictly restricted or even prohibited in many countries because of its adverse effects on humans and the environment, an issue of conventional coatings is the deficiency in self-healing functionality when occurrence of defects and corrosion.…”

Section: Introductionmentioning

confidence: 99%

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Development of a thiophene derivative modified LDH coating for Mg alloy corrosion protection

Xie

Fernandez

et al. 2020

Electrochimica Acta

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A new thiophene derivative corrosion inhibitor (CI) was used to functionalize the layered double hydroxide (LDH) primer on Mg alloy to enhance corrosion protection. Compared with bare LDH coating, the composite coatings consisting of a MgAl-LDH primer and an outer CI layer showed highly compact surface structures without large pores and gaps, thereby indicating the enhanced capability to resist the penetration of corrosive species. Eelectrochemical tests revealed that the MgAl-LDH film modified with the newly synthesized CI exhibited higher charge transfer resistance and lower corrosion current density than films modified with commercial CIs. The highest enhancement in corrosion resistance was linked to the film's ability to repair physical damage by forming precipitates through chemical complexation and adsorption of the CIs. These findings open up new opportunities for the design and synthesis of a thiophene-contained inhibitor to modify LDH films and to obtain a composite coating with superior corrosion protection.

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Enhancing structure integrity and corrosion resistance of Mg alloy by a two-step deposition to avoid F ions etching to nano-SiO2 reinforcement

Cited by 57 publications

References 62 publications

In-Situ Growth of NiAl-Layered Double Hydroxide on AZ31 Mg Alloy towards Enhanced Corrosion Protection

In-Situ Growth of NiAl-Layered Double Hydroxide on AZ31 Mg Alloy towards Enhanced Corrosion Protection

Review—Promises and Challenges of In Situ Transmission Electron Microscopy Electrochemical Techniques in the Studies of Lithium Ion Batteries

Development of a thiophene derivative modified LDH coating for Mg alloy corrosion protection

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