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Anti-corrosion Coatings: New Ideas to Make Them More Effective
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Anti-corrosion Coatings: New Ideas to Make Them More Effective

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Corrosion, Wear and Erosion".

Deadline for manuscript submissions: 20 May 2024 | Viewed by 6668

Special Issue Editor

Dr. Andrzej Miszczyk

E-Mail Website
Guest Editor
Department of Electrochemistry, Corrosion and Materials Engineering, Chemical Faculty, Gdańsk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland
Interests: organic coatings in corrosion protection; multilayer coating systems; multifunctional coatings; degradation of organic coatings; application of impedance spectroscopy in the field of coating testing; anticorrosion pigments for coatings; use of chemometric methods in coating studies

Special Issue Information

Dear Colleagues,

In practice, corrosion prevention primarily involves the use of protective coatings. This is because this technology is highly versatile, easy to use, cost-effective, able to provide optimal functionality, able to improve the durability of equipment and structures, and is very flexible and amenable to improvements.

We need new, more effective means to ensure the more sustainable and environmentally friendly development of civilization. By extending the service life of devices and structures and reducing or eliminating failures and environmental pollution, corrosion protection is part of this aspiration.

There is high demand for high-performance nano-structured coating systems. Their use can provide a significant increase in the effectiveness of corrosion protection and meet the level of multifunctionality desired in many applications.

We have many laboratory-tested ideas for new, better, and more effective anti-corrosion coatings. Let us not let them be unknown to others. Let us share this information through publications.

This Special Issue will serve as a forum for papers that may include (but are not limited to) research on the following concepts:

  • New ideas in corrosion-protective coating mechanisms.
  • Self-healing and self-stratifying polymer systems.
  • Recent developments in multifunctional, high-performance coatings.
  • Coatings produced by different technologies, especially environmentally friendly technologies.
  • The use of new, multifunctional pigments, in particular in flake form (e.g., graphene).
  • Reductions in the zinc content of zinc-rich coatings through the use of conductive additives (e.g., carbon nanomaterials).
  • New concepts and ideas for testing coating products not only in the laboratory but also actual in industrial or infrastructural conditions.
  • High-performance coating testing exposed to high temperatures, pressures, stresses, vibrations, and other extreme environmental conditions.
  • Understanding the mechanisms of degradation of coatings in industrial conditions in the presence of friction, wear, vibration or other dynamic loads, and a chemical environment.
  • Improvements in the adhesion of coatings to various substrates (e.g., steel or galvanized steel).

Dr. Andrzej Miszczyk
Guest Editor

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

  • anti-corrosion coatings
  • high-performance coatings
  • coating testing
  • coating reliability
  • multifunctional coatings

Published Papers (3 papers)

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Research

25 pages, 8496 KiB  
Article
Evaluating the Corrosion Inhibition Efficiency of Pyridinium-Based Cationic Surfactants for EN3B Mild Steel in Acidic-Chloride Media
by Rabia Talat, Muhammad Adeel Asghar, Irsa Tariq, Zareen Akhter, Faroha Liaqat, Laiba Nadeem, Ali Haider and Saqib Ali
Coatings 2022, 12(11), 1701; https://doi.org/10.3390/coatings12111701 - 08 Nov 2022
Cited by 6 | Viewed by 2251
Abstract
Two new effective corrosion inhibitors, namely N-(n-octyl)-3-methylpyridinium bromide (Py8) and N-(n-dodecyl)-3-methylpyridinium bromide (Py12), have been presented. The cationic pyridinium-based surfactants were analyzed for the corrosion protection of general purpose steel (EN3B) against a strong corrosive media (3.5% NaCl, pH 1.5). The results of [...] Read more.
Two new effective corrosion inhibitors, namely N-(n-octyl)-3-methylpyridinium bromide (Py8) and N-(n-dodecyl)-3-methylpyridinium bromide (Py12), have been presented. The cationic pyridinium-based surfactants were analyzed for the corrosion protection of general purpose steel (EN3B) against a strong corrosive media (3.5% NaCl, pH 1.5). The results of the electrochemical measurements, i.e., Tafel polarization, linear polarization resistance (LPR) and electrochemical impedance spectroscopy (EIS) revealed a mixed-type behavior of both inhibitors, and the maximum inhibition efficiency (IE) achieved with Py8 and Py12 was 85% and 82%, respectively. The process of adsorption of synthesized inhibitors followed the Langmuir adsorption isotherm, and a higher value of Kads highlighted the existence of strong interaction between inhibitors and the EN3B mild steel surface. Furthermore, the values of ΔG°ads were calculated to be −32 kJ mol−1 for Py8 and −33 kJ mol−1 for Py12, indicating the coexistence of both physisorbed and chemisorbed molecules. The surface morphology of EN3B mild steel samples was observed by scanning electron microscopy (SEM) and atomic force microscopy (AFM), where the reduced surface roughness in the presence of Py8 and Py12 in chloride media further supported the evidence of an efficient inhibition process. Density functional theory (DFT) calculations reveal excellent correlation with the experimental results, with Py8 showing superior corrosion inhibition potential, signifying that the alkyl chain length and intramolecular charge transfer are crucial factors in deciding the inhibition performance of the synthesized cationic surfactants. Furthermore, this study proposes the mechanism for the adsorption of the surfactant-based inhibitors over the EN3B mild steel surface, which leads to the formation of an effective and protective anticorrosive film. Full article
(This article belongs to the Special Issue Anti-corrosion Coatings: New Ideas to Make Them More Effective)
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20 pages, 3276 KiB  
Article
Neural-Network-Based Ultrasonic Inspection of Offshore Coated Concrete Specimens
by Azamatjon Kakhramon ugli Malikov, Young H. Kim, Jin-Hak Yi, Jeongnam Kim, Jiannan Zhang and Younho Cho
Coatings 2022, 12(6), 773; https://doi.org/10.3390/coatings12060773 - 04 Jun 2022
Cited by 6 | Viewed by 1999
Abstract
A thin layer of protective coating material is applied on the surface of offshore concrete structures to prevent its degradation, thereby extending the useful life of the structures. The main reasons for the reduction in the protective capability of coating layers are loss [...] Read more.
A thin layer of protective coating material is applied on the surface of offshore concrete structures to prevent its degradation, thereby extending the useful life of the structures. The main reasons for the reduction in the protective capability of coating layers are loss of adhesion to concrete and flattening of the coating layer wall. Usually, the state of the coating layer is monitored in the setting of water immersion using ultrasonic inspection methods, and the method of inspection still needs improvement in terms of speed and accuracy. In this study, the ultrasonic pulse echo method was used in a water immersion test of the coated specimens, and continuous wavelet transform (CWT) with complex Morlet wavelets was implemented to define the received waveforms’ time of flight and instantaneous center frequency. These allow one to evaluate the thickness of the coating layer during water immersion. Furthermore, phases of reflected echoes at CWT local peaks were computed using a combination of Hilbert transforms (HT) and wave parameters derived from CWT. In addition, three relative wave parameters of echoes were also used to train deep neural networks (DNN), including instantaneous center frequency ratio, CWT magnitude ratio, and phase difference. With the use of three relative waveform parameters of the DNN, the debonded layer detection accuracy of our method was 100%. Full article
(This article belongs to the Special Issue Anti-corrosion Coatings: New Ideas to Make Them More Effective)
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12 pages, 3569 KiB  
Article
Selection of Organic Coating Systems for Corrosion Protection of Industrial Equipment
by Michał Drozda and Andrzej Miszczyk
Coatings 2022, 12(4), 523; https://doi.org/10.3390/coatings12040523 - 13 Apr 2022
Cited by 4 | Viewed by 2220
Abstract
The most important element of corrosion protection in industrial conditions is the protective coating system. However, selecting the right coating can often be a real problem due to the sheer number of coating manufacturers and their products on the market. A quantitative approach [...] Read more.
The most important element of corrosion protection in industrial conditions is the protective coating system. However, selecting the right coating can often be a real problem due to the sheer number of coating manufacturers and their products on the market. A quantitative approach based on the data mining technique used to analyze the obtained multi-site exposure data has been proposed. This was demonstrated by the example of the selection of a coating system to protect an industrial ball mill located in a hall for the enrichment of copper ore at the Polish company KGHM Polska Miedz S.A. A collection of 21 two-layer coating systems from different manufacturers was tested for one year. Multiple areas on the industrial ball mill, subjected to varying degrees of vibrations and abrasion, were painted. In addition, sets of samples that can be detached from the mill housing were mounted, as well as the set exposed in the hall without vibrations. The condition of the coatings after exposure was assessed using impedance spectroscopy. The obtained data from many different exposure areas were analyzed using principal components analysis (PCA). In this way, the most advantageous coating systems for the specific conditions in the hall were indicated. Additionally, on this basis, the contribution of various destructive factors, including vibrations and abrasion, to the protective properties of the tested coatings, was estimated. Full article
(This article belongs to the Special Issue Anti-corrosion Coatings: New Ideas to Make Them More Effective)
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