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Coatings
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Interfacial Electrochemistry of Coatings Produced or Applied in Solution
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Interfacial Electrochemistry of Coatings Produced or Applied in Solution

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Liquid–Fluid Coatings, Surfaces and Interfaces".

Deadline for manuscript submissions: 15 July 2024 | Viewed by 6343

Special Issue Editors

Prof. Dr. Rongguang Wang

E-Mail Website1 Website2
Guest Editor
Department of Mechanical Systems Engineering, Hiroshima Institute of Technology, Hiroshima, Japan
Interests: electrochemical interface; electrodeposition; corrosion; wear; wetting; catalysts
Prof. Dr. Her-Hsiung Huang

E-Mail Website
Guest Editor
Department of Dentistry, National Yang-Ming Chiao Tung University, Taipei, Taiwan
Interests: biomaterials; surface modification; biomedical implant; biocompatibility; corrosion; electrochemistry
Prof. Dr. Jiaqian Qin

E-Mail Website
Guest Editor
Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok, Thailand
Interests: surface coatings; surface modification; batteries; catalysts

Special Issue Information

Dear Colleagues,

Coatings electrochemically fabricated in solution are advantageous as they can excellently adhere to any conductive substrate without restrictions in terms of area. They can easily be mass-produced with various chemical compositions, well-controlled structures, fine-shaped surfaces, and pre-designated thicknesses. The process can be precisely controlled through the applied current/potential in the planned solution. On the other hand, many coatings, including (but not limited to) electrochemically produced ones, are used in solutions for different reasons, including as structures, catalysts, electrodes, and so on. Coatings endure deformation, wear, dissolution, corrosion, erosion, wetting, or other types of degradation when used in these applications. By clarifying the process and mechanism of fabrication and the degradation behavior of coatings, the needs in the fields of mining, pipelines, shipping, automotive, aerospace, agriculture, fisheries, health, and others can be met.

For these reasons, we are launching this Special Issue, entitled "Interfacial Electrochemistry of Coatings Produced or Applied in Solution", which focuses on the design, production, evaluation, characterization, application, and degradation of coatings. The coatings under study can be subjected to wear or corrosion, be wetted by rain or snow, be applied as catalysts for water splitting or fuel battery, or be used in other environments. This issue invites researchers to share their research regarding electrochemically produced coatings by discussing how novel or traditional environmentally friendly coatings with long duration and high efficiency can be used, as well as their mechanisms. We encourage authors to submit manuscripts regarding the following topics to this Special Issue:

  • Novel coatings produced by any electrochemical process in solution, including (but not limited to) electroplating, electrodeposition, anodized oxidation, solution plasma, and so on.
  • The application of the above coatings under any working condition from massive structures to micro machines, including (but not limited to) the properties of hardness, wear, deformation, fracture, the transmission/reflection/adsorption of light, magnetism, conductivity, and so on.
  • The behaviors of any coating, including (but not limited to) corrosion, wear/tribology, wetting, stress corrosion cracking, photocatalysts and electrocatalysts occurring in solution; the coating can be produced via an electrochemical process or other processes, including (but not limited to) PVD, CVD, thermal/cold spraying, laser cladding, additive manufacturing processes, and so on.
  • Any other experimental research or theoretical studies regarding coatings concerning electrochemistry in solution.

The keywords include (but are not limited to): electrochemistry, corrosion, catalyst, electroplating, electrodeposition, fuel battery, wear/tribology, wetting, and so on.

We look forward to receiving your contributions.

Prof. Dr. Rongguang Wang
Prof. Dr. Her-Hsiung Huang
Prof. Dr. Jiaqian Qin
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Coatings is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • electrochemistry
  • electroplating/electrodeposition
  • corrosion
  • catalyst
  • battery/fuel battery
  • wear/tribology
  • hydrophobic/hydrophilic

Published Papers (5 papers)

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Research

18 pages, 9437 KiB  
Article
Tribocorrosion Behaviour of SUS430 Stainless Steel in Aqueous Solutions with Different pH
by Rongguang Wang, Yuto Ohgata, Yunhui Li, Tian Xiao and Masaharu Honda
Coatings 2023, 13(9), 1539; https://doi.org/10.3390/coatings13091539 - 01 Sep 2023
Cited by 1 | Viewed by 780
Abstract
To reveal the influence of passive film on the tribocorrosion behaviour of stainless steel, SUS430 was loaded at 2.0 N or 10.0 N in aqueous solutions with various pH from 1.0 to 10.0. The pure wear behaviour was investigated in the air for [...] Read more.
To reveal the influence of passive film on the tribocorrosion behaviour of stainless steel, SUS430 was loaded at 2.0 N or 10.0 N in aqueous solutions with various pH from 1.0 to 10.0. The pure wear behaviour was investigated in the air for comparison. The polarization behaviour, the morphology of the worn or tribocorroded surface, and the depth profiles of the formed groove were measured to discuss the mechanism. The passive state was confirmed at pH = 7.0 and 10.0, but vanished at pH = 1.0 and 2.0. The pure wear in air depended on the applied loads, rather than the sliding time. On the other hand, the tribocorrosion in deionised water was much smaller than the pure wear in air. Under a load of 2.0 N, the tribocorrosion at pH = 1.0 was weaker than pH = 2.0. However, the situation reversed when increasing the load to 10.0 N. The tribocorrosion in neutral and alkaline solutions is considerably smaller than in acid solutions. Full article
(This article belongs to the Special Issue Interfacial Electrochemistry of Coatings Produced or Applied in Solution)
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10 pages, 1331 KiB  
Article
Electrochemical Deposition and Corrosion Resistance Characterization of FeCoNiCr High-Entropy Alloy Coatings
by Zhefeng Xu, Yan Wang, Xiaomin Gao, Luya Peng, Qi Qiao, Jingjing Xiao, Fuyu Guo, Rongguang Wang and Jinku Yu
Coatings 2023, 13(7), 1167; https://doi.org/10.3390/coatings13071167 - 27 Jun 2023
Cited by 2 | Viewed by 1478
Abstract
The corrosion resistance of FeCoNiCr high-entropy alloy deposits was investigated upon being prepared by current electrodeposition. The coatings were co-deposited in an electrolyte of an aqueous ferrous, cobalt, nickel, and chromium sulfates solution. Energy dispersive spectrometry analysis demonstrated that all four elements were [...] Read more.
The corrosion resistance of FeCoNiCr high-entropy alloy deposits was investigated upon being prepared by current electrodeposition. The coatings were co-deposited in an electrolyte of an aqueous ferrous, cobalt, nickel, and chromium sulfates solution. Energy dispersive spectrometry analysis demonstrated that all four elements were co-deposited successfully. At the same time, the results from SEM indicate that the surface of the coating exhibits a granular morphology, with uniform density and no presence of cracks, with sizes ranging from 500 nm to 5 μm. Furthermore, X-ray diffraction patterns enunciated that the as-deposited coatings were amorphous. The polarization curves of the FeCoNiCr high-entropy alloy coating were measured by an electrochemical workstation in 3.5 wt.% NaCl, 1 mol·L−1 H2SO4 and 1 mol·L−1 NaOH solutions. The results revealed that the coating exhibited excellent corrosion resistance. The corrosion mechanism of the FeCoNiCr high-entropy alloy coating was analyzed in different environments. Moreover, the scratch testing method was employed to determine the alloy adhesion on the substrate, with higher values obtained for the FeCoNiCr alloy. Full article
(This article belongs to the Special Issue Interfacial Electrochemistry of Coatings Produced or Applied in Solution)
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9 pages, 2900 KiB  
Article
Effect of Amorphous Boron on the Microstructure and Corrosion Properties of Ni-W Coatings
by Napat Kiatwisarnkij, Suchet Mahattanatawee, Gobboon Lothongkum and Jiaqian Qin
Coatings 2023, 13(2), 377; https://doi.org/10.3390/coatings13020377 - 07 Feb 2023
Viewed by 1121
Abstract
In this study, a nickel-tungsten/amorphous boron composite coating (Ni-W/B) was successfully deposited on carbon steel using the electrodeposition method. Electrodeposition was performed by dispersing varying quantities of amorphous boron (0, 0.5, 1, and 3 g/L) particles in a Ni-W electrolytic bath. The microstructure [...] Read more.
In this study, a nickel-tungsten/amorphous boron composite coating (Ni-W/B) was successfully deposited on carbon steel using the electrodeposition method. Electrodeposition was performed by dispersing varying quantities of amorphous boron (0, 0.5, 1, and 3 g/L) particles in a Ni-W electrolytic bath. The microstructure and morphology of composite coatings were characterized by scanning electron microscope (SEM). The electrochemical properties of the Ni-W alloy and Ni-W/B composite coatings were studied using electrochemical impedance spectroscopy (EIS), polarization curves, and immersion testing. It was found that the addition of amorphous boron particles to Ni-W coatings can significantly smooth the modified composite coatings and improve the corrosion resistance, probably by changing the corrosion from pitting to uniform corrosion with increasing boron content. The boron concentration of 0.5 g/L in the bath provided the highest corrosion resistance among all the modified coatings. Full article
(This article belongs to the Special Issue Interfacial Electrochemistry of Coatings Produced or Applied in Solution)
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9 pages, 2391 KiB  
Article
Influence of Annealing on the Microstructure and Mechanical Properties of Ni-W/Boron Composite Coatings
by Malay Kumar Das, Waralee Pinitpuwadol, Kohpong Wonlopsiri, Panyawat Wangyao and Jiaqian Qin
Coatings 2022, 12(12), 1992; https://doi.org/10.3390/coatings12121992 - 19 Dec 2022
Cited by 1 | Viewed by 1084
Abstract
Ni-W/boron composite coatings are deposited from an ammonia citrate bath with a boron particle suspension. The effect of the boron incorporation into the Ni-W alloy coating and subsequent heat treatment of the deposits on the microstructure and properties of the Ni-W/boron coatings have [...] Read more.
Ni-W/boron composite coatings are deposited from an ammonia citrate bath with a boron particle suspension. The effect of the boron incorporation into the Ni-W alloy coating and subsequent heat treatment of the deposits on the microstructure and properties of the Ni-W/boron coatings have been investigated. The boron particles can be uniformly dispersed in the Ni-W alloy, which can lead to an enhancement in the wear performance and hardness of the coatings. The XRD results show that a new Ni4W phase can be formed, especially at heat treatment temperatures beyond 400 °C. The grain size of the deposits is smaller than 10 nm with heat treatment temperatures lower than 600 °C and increases with the heat treatment temperature increasing. The higher temperature will significantly cause the grain coarsening (25.8 nm at 700 °C). Furthermore, the hardness and wear resistance increase with the formation of the Ni4W phase and the inverse Hall–Petch relationship at the lower heat treatment temperatures (<600 °C). While the grain coarsening causes the hardness of the deposits to decrease at the temperature of 700 °C. Full article
(This article belongs to the Special Issue Interfacial Electrochemistry of Coatings Produced or Applied in Solution)
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16 pages, 7135 KiB  
Article
Fabrication and Characterization of Oxygen-Carbon-Contained CrMnFeCoNi Coatings Electrodeposited in DMF-CH3CN Solution with and without Supporting Electrolyte LiClO4
by Tian Xiao, Rongguang Wang, Eishi Tanabe, Yuhki Satoh, Mohammed Bazzaoui, Yunhan Ling and Zhaoxia Lu
Coatings 2022, 12(12), 1804; https://doi.org/10.3390/coatings12121804 - 23 Nov 2022
Cited by 2 | Viewed by 1241
Abstract
Oxygen-carbon-contained CrMnFeCoNi coatings were electrodeposited in an organic solvent of DMF-CH3CN (N,N-dimethylformamide-acetonitrile) containing chlorides of chromium, manganese, iron, cobalt, and nickel, with or without supporting electrolyte lithium perchlorate (LiClO4). The coatings’ composition, structure, hardness, and electrocatalytic properties were examined. [...] Read more.
Oxygen-carbon-contained CrMnFeCoNi coatings were electrodeposited in an organic solvent of DMF-CH3CN (N,N-dimethylformamide-acetonitrile) containing chlorides of chromium, manganese, iron, cobalt, and nickel, with or without supporting electrolyte lithium perchlorate (LiClO4). The coatings’ composition, structure, hardness, and electrocatalytic properties were examined. The presence of lithium in coatings obtained with LiClO4 showed it unsuitable as a supporting electrolyte in this fabrication process. Without LiClO4, oxygen-carbon-contained CrMnFeCoNi coatings were obtained at constant potentials at −2.0, −2.5, and −3.0 V (vs. SSE) by enhancing the concentrations of the target metal ions in the solution. These coatings were mainly amorphous with nanocrystals, which were comprised of >50 atom% oxygen atoms, >7 atom% carbon atoms, and near equiatomic Cr, Mn, Fe, Co, and Ni, showing a high level of hardness and advanced electrocatalytic activity in the oxygen evolution reaction. Full article
(This article belongs to the Special Issue Interfacial Electrochemistry of Coatings Produced or Applied in Solution)
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