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Coatings
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Advanced Anticorrosion Coatings and Coating Testing
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Advanced Anticorrosion Coatings and Coating Testing

A special issue of Coatings (ISSN 2079-6412).

Deadline for manuscript submissions: 20 October 2024 | Viewed by 6209

Special Issue Editors

Dr. Nevena Marinova

E-Mail Website1 Website2
Guest Editor
Department of Corrosion Engineering, TECNALIA, Basque Research and Technology Alliance (BRTA), 20009 San Sebastian, Spain
Interests: corrosion; anticorosion coatings; corrosion testing; extreme conditions; marine corrosion; oil and gas corrosion; electrochemsitry; corrosion control
Dr. Chuanbo Hu

E-Mail Website
Guest Editor
School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing 404100, China
Interests: conducting polymer thin films; organic coatings; superhydrophobic-superoleophobic surfaces; oil-water separation; electrochemical corrosion; electrodeposition
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The corrosion of metals is a huge economic issue and seriously compromises safety in industry, civil infrastructure, transport vehicles, etc. Coatings have proven to be one of the most efficient and reliable solutions for corrosion protection. Currently, researchers are exploring the potential for enhanced corrosion protection of novel coatings through innovative application methods, and are aiming to improve the properties of traditional coating systems. Furthermore, new applications of materials are arising, which require robust anticorrosion protection in extreme conditions.

In parallel, significant research efforts for developing reliable testing procedures are being made and increasing importance is being given to field exposure results. Good correlation between laboratory testing and field exposure is recognized to be a key issue for correctly assessing the durability of anticorrosion coatings.

The aim of this call for research papers is to collect articles on the most recent advances in coatings, focusing on corrosion protection and coating testing. Furthermore, this Special Issue aims to serve as a community forum for discussion, highlighting the important challenges in the field.

Based on all this, the suggested scope of this Special Issue includes (but is not limited to) the following concepts:

  • Advanced organic, inorganic, polymeric and composite coatings for the corrosion protection of metals.
  • Novel smart and multifunctional coatings, including self-healing coatings, self-cleaning coatings, high-performance inhibiting coatings, nanocomposite coatings, innovative environmentally friendly coatings, etc.
  • Coatings for demanding applications under extreme conditions, such as high-temperature corrosion, coatings for oil and industry, hydrogen permeation barrier coatings, etc.
  • Anticorrosion coatings with improved mechanical resistance and tribological properties.
  • Advances in coating testing and validation of innovative testing methodologies which are more representative to service conditions than current procedures. Correlation between accelerated test result data from field exposure.
  • Improved knowledge on protection mechanism, advances in theoretical research and simulation to reliably predict coating performance and failure mechanisms.

Dr. Nevena Marinova
Dr. Chuanbo Hu
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

  • anticorrosion coatings
  • accelerated testing
  • extreme conditions
  • field exposure data
  • barrier coatings

Published Papers (4 papers)

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Research

23 pages, 9874 KiB  
Article
Exploring Sustainable Coating Solutions for Applications in Highly Corrosive Environments
by Ana Suárez-Vega, Gemma Berriozabal, Aiala Urbegain, Daniela Minudri, Anthony Somers, Maria Forsyth, Raúl Caracena and Nevena Marinova
Coatings 2024, 14(5), 521; https://doi.org/10.3390/coatings14050521 - 24 Apr 2024
Viewed by 418
Abstract
To protect carbon steel from degradation via corrosion, it is usually coated using a multilayer system of paints composed of petroleum-based polymers. The chemical industry is currently moving towards more sustainable chemistry, in which one of the main objectives is to reduce fossil [...] Read more.
To protect carbon steel from degradation via corrosion, it is usually coated using a multilayer system of paints composed of petroleum-based polymers. The chemical industry is currently moving towards more sustainable chemistry, in which one of the main objectives is to reduce fossil fuel use and the derived raw materials. However, the replacement of petroleum-based raw materials with those that are bio-based is not straightforward since the properties of these new materials are often inferior to the traditional ones. One of the most used resins in primer paints is Diglycidyl ether bisphenol A (DGEBA). This is an epoxy resin synthesized from bisphenol A (BPA), a toxic and carcinogenic petroleum-based compound. This study investigates the substitution of the primer coating in a three-layer coating system with two different types of primer coating formulations, one which is partially bio-based and another that is BPA-free. The corrosion protection effectiveness of these sustainable coatings is assessed not only at the laboratory scale but also in real offshore conditions. Moreover, the adhesion of the different coating systems is evaluated before and after each ageing test. The results reveal that these novel coatings exhibit comparable performance to conventional paints while providing a more sustainable corrosion protection alternative. Full article
(This article belongs to the Special Issue Advanced Anticorrosion Coatings and Coating Testing)
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14 pages, 6064 KiB  
Article
Experimental Study of Laser Cladding Ni-Based Coating Based on Response Surface Method
by Haiyang Long, Tiankai Li, Haijiang Shi, Yongliang Gui and Changming Qiu
Coatings 2023, 13(7), 1216; https://doi.org/10.3390/coatings13071216 - 07 Jul 2023
Cited by 3 | Viewed by 1092
Abstract
In order to extend the service life of 45# steel and reduce production costs, coating NiCrBSi alloy powder on the surface of 45# steel can meet production requirements, avoid resource waste and achieve green manufacturing. Based on response surface method (RSM), the dilution [...] Read more.
In order to extend the service life of 45# steel and reduce production costs, coating NiCrBSi alloy powder on the surface of 45# steel can meet production requirements, avoid resource waste and achieve green manufacturing. Based on response surface method (RSM), the dilution rate, aspect ratio and contact angle were taken as the optimization goals, and the process parameters (laser power, scanning speed and powder feeding rate) were optimized and the optimal process parameters were determined. On this basis, the microstructure of Ni-based coating was characterized by the cladding experiment. The friction wear and corrosion resistance of the coating were tested, and the enhancement mechanism of the wear resistance and corrosion resistance of the coating was analyzed. The results show that the optimized coating has good corrosion resistance and wear resistance. It provides a reference for the optimization of process parameters in 45# steel repair work. Full article
(This article belongs to the Special Issue Advanced Anticorrosion Coatings and Coating Testing)
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16 pages, 5068 KiB  
Article
Mechanical Properties and Corrosion Behavior of Dual-Filler-Epoxy-Coated Steel Rebar under a Corrosive Environment
by Xingyu Wang, Qi Cao, Fujian Tang, Hong Pan, Xi Chen and Zhibin Lin
Coatings 2023, 13(3), 604; https://doi.org/10.3390/coatings13030604 - 12 Mar 2023
Cited by 1 | Viewed by 2006
Abstract
The deterioration of steel rebar in reinforced concrete is a major issue that reduces RC structures’ durability and structural integrity. Significant efforts have been devoted to developing high-performance coatings to provide efficient protection of the rebar, and one promising approach is to utilize [...] Read more.
The deterioration of steel rebar in reinforced concrete is a major issue that reduces RC structures’ durability and structural integrity. Significant efforts have been devoted to developing high-performance coatings to provide efficient protection of the rebar, and one promising approach is to utilize nanofiller as additives to improve the performance of polymer resins. This study aimed to improve the corrosion resistance of steel rebar by applying an epoxy coating with graphene nanoplatelets (GNPs) and silica nanopowders (NSs) as additives. The corrosion behavior of nanocomposite-coated rebars was characterized via an electrochemical impedance spectroscopy (EIS) test, and salt spray exposure was utilized to evaluate the durability of the coated rebars. Investigation of abrasion resistance and mechanical properties of the coatings was conducted using the falling sand test and tensile coupon test. In addition, the nanocomposites were scanned by micro-CT to explore the effect of binary nanofillers on the intactness of the polymeric matrix. The GNP-NS hybrid filler reduced the void fraction to 0.002%, whereas the void fraction in pure epoxy was 0.07%. Significant reinforcement was found in the mechanical properties; the addition of GNP-NS hybrid filler increased the tensile strength to 37.1 MPa, a 56% increase compared to the pure epoxy. Additionally, the GNP-NS hybrid fillers have led to an improvement of 16% in the Young’s modulus. In terms of corrosion resistance, the Rc value of rebar coated with GNP-NS coating was about three times greater than the ones coated with a single-filler epoxy coating during the initial test, and this value remained undegraded after 200 hr of exposure. In contrast, the group containing hybrid fillers displayed the lowest thickness loss following abrasion testing, with a 74% reduction in thickness loss, showing the coating’s high abrasion resistance. Hence, the results reveal that GNP-NS hybrid fillers have superior wear resistance, mechanical capabilities, anticorrosion properties, and durability. This research provides valuable insights into developing and implementing high-performance polymeric material to protect steel rebars in concrete structures, therefore significantly increasing the sustainability of concrete structures. Full article
(This article belongs to the Special Issue Advanced Anticorrosion Coatings and Coating Testing)
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20 pages, 11533 KiB  
Article
Two-Layer Heat-Resistant Protective Coatings for Turbine Engine Blades
by Leszek Ułanowicz and Andrzej Dudziński
Coatings 2023, 13(3), 588; https://doi.org/10.3390/coatings13030588 - 09 Mar 2023
Viewed by 1828
Abstract
One of the most important factors for increasing the durability of turbine engines is the use of turbine blades characterized by the best possible convergence of the thermophysical properties of the protective coating and the base material of the blade. The aim of [...] Read more.
One of the most important factors for increasing the durability of turbine engines is the use of turbine blades characterized by the best possible convergence of the thermophysical properties of the protective coating and the base material of the blade. The aim of the research was to evaluate the heat resistance of prototype two-layer protective coatings applied to turbine blades. The inner layer of the coating enables shaping the thermophysical convergence of the coating and the base material of the blade. The outer layer is used for thermal protection of the blade material. The inner layer was applied to the blade by plasma spraying, and the outer layer was diffusion aluminized for the first type by a non-contact gas method, for the second type by a slurry method, and for the third type, the ceramics were plasma sprayed. Turbine blades with prototype coatings were subjected to an engine test, and after the test, macro- and microstructure tests were performed. The tests showed that the prototype protective coating with an inner layer of the MCrAlY type applied to the blade by plasma spraying and an outer layer aluminized by diffusion by a non-contact gas method protects the blade material against oxidation and ensures its thermal insulation. Full article
(This article belongs to the Special Issue Advanced Anticorrosion Coatings and Coating Testing)
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