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Corrosion and Anticorrosion of Alloys/Metals
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Corrosion and Anticorrosion of Alloys/Metals

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

Deadline for manuscript submissions: closed (20 May 2024) | Viewed by 15272

Special Issue Editors

Dr. Henryk Kania

E-Mail Website
Guest Editor
Department of Metallurgy and Recycling, Katowice, 40-019, Krasinskiego 8, Silesian University of Technology, 44-100 Gliwice, Poland
Interests: hot dip galvanizing; thermal diffusion coatings, anti-corrosion protection; corrosion resistance; corrosion tests; surface engineering
Special Issues, Collections and Topics in MDPI journals
Dr. Anżelina Marek

E-Mail Website
Guest Editor
Department of Metallurgy and Recycling, Katowice, 40-019, Krasinskiego 8, Silesian University of Technology, 44-100 Gliwice, Poland
Interests: corrosion resistance; corrosion tests; surface engineering; mechanical properties; microstructure; crack
Dr. Florence Lequien

E-Mail Website
Guest Editor
CEA, Service de la Corrosion et du Comportement des Matériaux dans leur Environnement, Université Paris‐Saclay, Gif‐sur‐Yvette, France
Interests: corrosion in humid environment polluted by HCl; simulation; droplet; acoustic emission

Special Issue Information

Dear Colleagues,

In economic and social terms, corrosion is an extremely important problem for the economy as the losses caused by corrosion in highly developed countries are estimated at the level of 3% -5% of gross domestic product. The physicochemical and electrochemical interaction between metals and their alloys and the surrounding environment leads to the gradual deterioration of the materials until their mechanical and functional properties are completely lost. Economic losses are directly related to the necessity to replace damaged structures, machines, devices, or their components, the use of expensive corrosion-resistant materials, anti-corrosion protection, and also indirectly to production interruptions caused by the need to replace parts or remove damage. The degrading effect of corrosion concerns products made of most materials, but the main group is structures made of steel. The reduction of corrosion losses is influenced not only by the appropriate design of the structure itself, but also by the proper selection, execution, and operation of the anti-corrosion protection. Therefore, corrosion awareness and knowledge of the corrosion mechanism are necessary for the design, selection of materials, and protection systems in order to ensure optimal durability of products under the influence of a corrosive environment.

The scope of this special edition "Corrosion and Anticorrosion of Alloys / Metals" covers research into the latest developments in the wear and corrosive behavior of various materials to understand the corrosion mechanisms of metals and alloys. The topics also include the production of anti-corrosion coatings, their structural characteristics, tests of properties, and physicochemical phenomena occurring during the formation of coatings on various base materials. The main coating technologies include hot-dip galvanizing, thermal spraying, electrogalvanizing, organic coatings, electroless coatings, conversion coatings, as well as PVD and CVD methods, and others. The scope of application of the coatings includes coatings resistant to electrochemical and high-temperature corrosion, as well as coatings for operation in particularly difficult conditions, such as coatings resistant to corrosion in liquid metals.

We invite all researchers interested in corrosion and the design of anti-corrosion systems to present their results related to both experimental and theoretical research.

Dr. Henryk Kania
Dr. Anżelina Marek
Dr. Florence Lequien
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

  • corrosion
  • corrosion resistance
  • corrosion tests
  • coatings
  • hot dip galvanizing
  • thermal spraying
  • electrogalvanizing
  • organic coatings

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Published Papers (7 papers)

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Editorial

Jump to: Research

5 pages, 212 KiB  
Editorial
Corrosion and Anticorrosion of Alloys/Metals: The Important Global Issue
by Henryk Kania
Coatings 2023, 13(2), 216; https://doi.org/10.3390/coatings13020216 - 17 Jan 2023
Cited by 20 | Viewed by 4682
Abstract
Most metal materials commonly used in engineering corrode in atmospheric conditions [...] Full article
(This article belongs to the Special Issue Corrosion and Anticorrosion of Alloys/Metals)

Research

Jump to: Editorial

16 pages, 11286 KiB  
Article
Corrosion Behavior of Al2O3-40TiO2 Coating Deposited on 20MnNiMo Steel via Atmospheric Plasma Spraying in Hydrogen Sulfide Seawater Stress Environments
by Xian Zeng, Xiangxiang Chen, Yongjun Wang, Hao Zhang, Qian Cao and Xudong Cheng
Coatings 2024, 14(5), 588; https://doi.org/10.3390/coatings14050588 - 8 May 2024
Viewed by 1264
Abstract
In this study, an Al2O3-40TiO2 coating was deposited on 20MnNiMo steel via atmospheric plasma spraying. The corrosion behavior of the coating was investigated in both artificial seawater and a simulated environment with hydrogen sulfide and high pressure. Additionally, [...] Read more.
In this study, an Al2O3-40TiO2 coating was deposited on 20MnNiMo steel via atmospheric plasma spraying. The corrosion behavior of the coating was investigated in both artificial seawater and a simulated environment with hydrogen sulfide and high pressure. Additionally, ion dissolution experiments were conducted to evaluate the coating’s bio-friendliness. In artificial seawater, the corrosion rate (based on the corrosion current) of the Al2O3-40TiO2 coating initially decreased before increasing. It was speculated that the blocking of corrosion products in the defect channels was helpful in delaying the progress of corrosion in the early stage. The coating had a corrosion current on the order of 10−6 A/cm2 in artificial seawater, suggesting good protection in conventional seawater environments. In the simulated environment, the corrosion rate (based on the weight loss) of the Al2O3-40TiO2 coating showed a continuously declining trend. It was deduced that, unlike corrosion products in artificial seawater, the corrosion products in the simulated environment (e.g., metal sulfide) might be more chemically stable, leading to a longer blocking effect. Therefore, a minimal corrosion rate of 0.0030 mm/a was obtained after the coating was immersed for 30 days. The amount of dissolved coated elements was negligible and there were only small amounts of dissolved non-coated elements such as Ni and Mo. The developed coating can be considered to be highly biofriendly if the non-coated area of the specimen is well sealed. Full article
(This article belongs to the Special Issue Corrosion and Anticorrosion of Alloys/Metals)
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18 pages, 9151 KiB  
Article
Corrosion Behavior of Hybrid Zinc Coatings Based on Chitosan and Corrosion Inhibitor BTA: Effect of the Molecular Weight and ζ-Potential
by Viktoria Milkova, Nelly Boshkova, Georgy Grancharov, Olya Stoilova and Nikolai Boshkov
Coatings 2024, 14(4), 495; https://doi.org/10.3390/coatings14040495 - 17 Apr 2024
Viewed by 1035
Abstract
The creation of anticorrosion hybrid zinc-based coatings containing chitosan particles with low (LMC) or high (HMC) molecular weight is an effective method for safe and durable exploitation of different steel infrastructures. In this work, hybrid coatings consisting of zinc and two types of [...] Read more.
The creation of anticorrosion hybrid zinc-based coatings containing chitosan particles with low (LMC) or high (HMC) molecular weight is an effective method for safe and durable exploitation of different steel infrastructures. In this work, hybrid coatings consisting of zinc and two types of chitosan particles (LMC or HMC) were obtained to protect low-carbon steel from corrosion attack in a chloride environment. Chitosans with different molecular weights (CS50 Mw 50–190 kDa and CS190 Mw 190–310 kDa) have been applied. Furthermore, both particle types were prepared with or without additional content of incorporated corrosion inhibitor benzotriazole (BTA). The chitosan particles were obtained and thereafter electrodeposited in the form of hybrid coatings on mild steel substrates. The electrokinetic charge and hydrodynamic size of the particles and the stability of their aqueous suspensions were evaluated using dynamic light scattering. The concentration of BTA loaded into the particles was determined by the difference between the initial concentration of the compound added during the particle preparation and the concentration in the supernatant after centrifugation of the dispersion. The hybrid coatings were compared concerning their surface morphology, topography, and hydrophilicity (SEM and AFM analysis, water contact angle measurement) as well as corrosion and electrochemical behavior (potentiodynamic polarization curves—PD, polarization resistance—Rp, cyclic voltammetry—CVA). The protective characteristics of the coatings were studied in 5% NaCl solution. The results obtained from the PD studies demonstrated lower corrosion current densities of all hybrid coatings compared to the ordinary zinc one. In addition, the Rp tests showed enhanced protective ability and corrosion resistance of LMC and LMCB compared to the ordinary zinc, HMC, and HMCB, respectively. The obtained scientific information presented the effect of the molecular weight and ζ-potential of the particles on the anticorrosion ability of the hybrid coatings compared to the ordinary zinc one. Full article
(This article belongs to the Special Issue Corrosion and Anticorrosion of Alloys/Metals)
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10 pages, 3321 KiB  
Article
Corrosion Hazards in Urban Infrastructure Structures Using the Example of the Al Bayt Stadium in Katar
by Agnieszka Krolikowska and Pier Luigi Bonora
Coatings 2023, 13(8), 1443; https://doi.org/10.3390/coatings13081443 - 16 Aug 2023
Viewed by 1385
Abstract
A significant aspect of corrosion failures and catastrophes originate from trivial mistakes in either the choice or connection of different materials, as well as from inaccurate evaluation of the compatibility between materials and the environment. The example shown in the present paper summarizes [...] Read more.
A significant aspect of corrosion failures and catastrophes originate from trivial mistakes in either the choice or connection of different materials, as well as from inaccurate evaluation of the compatibility between materials and the environment. The example shown in the present paper summarizes several wrong solutions due to a lack of knowledge of the basic rules of corrosion control. By chance, the consequences of these errors already appeared during construction; therefore, they were not able to cause damage during operation. This paper is the third in a series devoted to enhancing the need for professional corrosion control design for infrastructures. Full article
(This article belongs to the Special Issue Corrosion and Anticorrosion of Alloys/Metals)
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17 pages, 5809 KiB  
Article
Corrosion Rate of Steel in Liquid Zn, Zn-Bi and Zn-Sn Baths
by Henryk Kania
Coatings 2023, 13(6), 993; https://doi.org/10.3390/coatings13060993 - 26 May 2023
Viewed by 1350
Abstract
In the hot dip galvanizing process, steel products are immersed in a liquid zinc bath. The contact of steel with liquid zinc causes the corrosion of the steel as a result of Fe dissolution processes in the liquid. If the dissolution process is [...] Read more.
In the hot dip galvanizing process, steel products are immersed in a liquid zinc bath. The contact of steel with liquid zinc causes the corrosion of the steel as a result of Fe dissolution processes in the liquid. If the dissolution process is carried out in a controlled manner, it results in the formation of a coating. Uncontrolled dissolution leads to the degradation of the steel surface. This article presents the results of research into the influence of Bi and Sn additions to zinc baths on the corrosion of steel in liquid zinc. Corrosion tests were carried out under conditions of kinetic dissolution using the rotating disc method. The kinetic dissolution constants of steel with different Si contents in Zn, Zn-0.5Bi and Zn-2Sn baths were determined. It was found that the addition of Bi and Sn lowers the value of the dissolution constant and may act as an inhibitor of Fe dissolution in liquid zinc. Based on the measurements and the determined value of the dissolution constant, the activation energy of kinetic dissolution was determined. It was found that in the temperature range of 440–480 °C, the addition of Bi and Sn increases the value of dissolution activation energy, which reduces the intensity of Fe transfer to the zinc bath. Full article
(This article belongs to the Special Issue Corrosion and Anticorrosion of Alloys/Metals)
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20 pages, 3425 KiB  
Article
Modelling of Lead Corrosion in Contact with an Anaerobic HCl Solution, Influence of the Corrosion Product Presence
by Martin Menut and Florence Lequien
Coatings 2022, 12(9), 1291; https://doi.org/10.3390/coatings12091291 - 2 Sep 2022
Viewed by 1951
Abstract
The present study outlines the first steps in modelling lead corrosion upon contact with an anaerobic HCI solution. These developments, completed with COMSOL Multiphysics, were carried out in dimension 1 of space. This process took place across several stages such that each could [...] Read more.
The present study outlines the first steps in modelling lead corrosion upon contact with an anaerobic HCI solution. These developments, completed with COMSOL Multiphysics, were carried out in dimension 1 of space. This process took place across several stages such that each could be studied and validated. This article presents the governing equations, parameters, and results of these simulations. When lead is immersed in a deaerated HCl solution, its dissolution leads to saturation of the electrolyte with the consequent precipitation of corrosion product. The PbCl2 corrosion product is simulated with a porous domain using either fixed or variable porosity. The results show a PbCl2 development that takes place through growth in space as well as through densification. The simulation highlights the fact that the PbCl2 layer is more compact near the surface of the electrode in accordance with the place of creation of the lead ions. These simulation results are compared with experimental data that validate the first approach. Full article
(This article belongs to the Special Issue Corrosion and Anticorrosion of Alloys/Metals)
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22 pages, 4794 KiB  
Article
Structure and Corrosion Resistance of Coatings Obtained by the Batch Double Hot Dip Method in Eutectoid ZnAl Bath with the Addition of Mg and Si
by Henryk Kania
Coatings 2022, 12(8), 1207; https://doi.org/10.3390/coatings12081207 - 18 Aug 2022
Cited by 6 | Viewed by 2581
Abstract
The article presents the results of the research determining the synergistic effect of Mg and Si additives in the ZnAl23 bath on the microstructure (SEM), growth kinetics, and corrosion resistance of coatings obtained by the batch double hot dip method. On the basis [...] Read more.
The article presents the results of the research determining the synergistic effect of Mg and Si additives in the ZnAl23 bath on the microstructure (SEM), growth kinetics, and corrosion resistance of coatings obtained by the batch double hot dip method. On the basis of the research on the chemical composition in micro-regions (EDS) and the research on the phase composition (XRD), the structural components of the coatings with a content of 3 and 6 wt.% Mg and 0.2–0.4 wt.% Si were identified. The corrosion resistance of the coatings was compared with that of the reference coating obtained in the ZnAl23Si0.4 bath in the neutral salt spray test (EN ISO 9227), and the test with sulfur dioxide in a humid atmosphere (EN ISO 6988). The parameters of electrochemical corrosion of the coatings were determined. This allowed for the conclusion that the addition of Mg and Si to the ZnAl23 bath improved the microstructural uniformity of the coating. In the area of the diffusion layer, the presence of the FeAl3 intermetallic phase was found, while in the outer layer the dendrite of the Al-rich solution with interdendritic spaces, where it locates areas of Zn-rich solution, eutectic Zn/MgZn2 or phase separation MgZn2 and Mg2Si are located. Additions of Mg and Si stabilize the kinetics of the coating’s growth, and its course is parabolic. The conducted corrosion tests showed better corrosion resistance of the coatings obtained in the bath with Mg addition compared to the reference coating obtained in the ZnAl23Si bath. The increase in corrosion resistance results from the presence of a more anodic MgZn2 phase, which, however, may be weakened by the presence of Mg2Si phase precipitates. Full article
(This article belongs to the Special Issue Corrosion and Anticorrosion of Alloys/Metals)
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