Corrosion and Coatings: Advances in Protection and Degradation Studies

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

Deadline for manuscript submissions: closed (31 October 2025) | Viewed by 2330

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CEA, Service de Recherche en Corrosion et Comportement des Matériaux, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
Interests: corrosion; simulation; droplet; acoustic emission
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Special Issue Information

Dear Colleagues,

This Special Issue entitled “Corrosion and Coatings: Advances in Protection and Degradation Studies” is of paramount importance in the field of materials science and corrosion engineering. This subject, which encompasses both the study of coating corrosion and their degradation mechanisms, as well as the development and application of coatings to minimize corrosion, addresses major economic and technological challenges. Indeed, corrosion is a global problem that costs billions of dollars annually to industry and jeopardizes infrastructure safety. In a context where material durability and efficiency are crucial, understanding and mastering corrosion processes and developing innovative protective coatings are essential to extend equipment lifespan, reduce maintenance costs, and improve system reliability across various sectors such as aerospace, automotive, construction, and energy. This theme, which reflects current research interests and expertise in the field, also offers the opportunity to explore a wide range of contributions from different areas of corrosion science and coating technology, thus fostering interdisciplinarity and innovation in this critical area of material research.

Dr. Florence Lequien
Guest Editor

Manuscript Submission Information

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Keywords

  • corrosion
  • coatings
  • degradation mechanisms
  • protective coatings
  • material science
  • corrosion engineering
  • surface treatment
  • durability and reliability

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Published Papers (2 papers)

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Research

16 pages, 2505 KB  
Article
Optimization of the Hard Anodizing Process in Acidic Baths on AA6063 Aluminum Alloy Using Response Surface Methodology
by José Cabral-Miramontes, Citlalli Gaona-Tiburcio, Erick Maldonado-Bandala, Lino Juarez-Alejandro, Miguel Angel Baltazar-Zamora, Francisco Estupiñan-Lopez, Laura Landa-Ruiz, Javier Olguin-Coca, Luis Daimir Lopez-Leon, Demetrio Nieves-Mendoza, Jesus Manuel Jaquez-Muñoz and Facundo Almeraya-Calderon
Coatings 2025, 15(11), 1306; https://doi.org/10.3390/coatings15111306 - 9 Nov 2025
Viewed by 575
Abstract
The characteristics of aluminum alloys make them the most extensively used material in the aerospace sector. Aluminum, in a natural way, when interacting with oxygen, forms a protective layer of aluminum oxide, Al2O3, that enhances its properties, for example, [...] Read more.
The characteristics of aluminum alloys make them the most extensively used material in the aerospace sector. Aluminum, in a natural way, when interacting with oxygen, forms a protective layer of aluminum oxide, Al2O3, that enhances its properties, for example, resistance to corrosion and fatigue. This work aims to optimize the anodizing process by identifying the optimum values and combination of factors that allow the formation of an alumina layer with a thickness of 12 µm and the maximum Vickers microhardness. The parameters to be evaluated will include time, current density, and sulfuric acid concentration, which were considered variables at two levels: 15 and 20 min, 2.5 and 3.5 A/dm2, and 180 and 350 g/L, respectively. We used the response surface methodology (RSM) with a composite central design (CCD). The results of the optimization MSR reveal that to obtain the optimum Type III hard anodizing on AA6063 aluminum alloy with a target thickness of 11.85 µm and a Vickers microhardness of 297.14, a combination consisting of 15 min, 2.55 A/dm2, and 333.15 g/L of H2SO4 is required. Full article
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16 pages, 6592 KB  
Article
Hydrogen Embrittlement Resistance of Ferritic–Pearlitic Pipeline Steel with Non-Electrochemically Deposited Copper- or Nickel–Phosphorus-Based Coating
by Ladislav Falat, Lucia Čiripová, František Kromka, Viera Homolová, Róbert Džunda and Marcela Motýľová
Coatings 2025, 15(5), 585; https://doi.org/10.3390/coatings15050585 - 15 May 2025
Cited by 2 | Viewed by 1479
Abstract
This work deals with the effects of a non-electrochemically deposited copper- or nickel–phosphorus-based coating on the resulting resistance of traditional X42 grade pipeline steel against hydrogen embrittlement (HE). The susceptibility to HE was determined by the evaluation of the hydrogen embrittlement index (HEI) [...] Read more.
This work deals with the effects of a non-electrochemically deposited copper- or nickel–phosphorus-based coating on the resulting resistance of traditional X42 grade pipeline steel against hydrogen embrittlement (HE). The susceptibility to HE was determined by the evaluation of the hydrogen embrittlement index (HEI) from the results of conventional room-temperature tensile tests using cylindrical tensile specimens. Altogether, three individual material systems were studied, namely uncoated steel (X42) and two coated steels, specifically with either a copper-based coating (X42_Cu) or a nickel–phosphorus-based coating (X42_Ni-P). The HEI values were calculated as relative changes in individual mechanical properties corresponding to the non-hydrogenated and electrochemically hydrogen-precharged tensile test conditions. Both applied coatings considerably improved the hydrogen embrittlement resistance of the investigated steel in terms of decreasing the HEI values related to the changes in the yield stress, ultimate tensile strength, and reduction of area. In contrast, the hydrogenation of both coated systems had detrimental effects on the value of total elongation, which resulted in an increase in the corresponding HEI value. This behavior was likely related to the earlier onset of necking during tensile straining due to strain localizations induced by the coatings’ surface imperfections. The findings from fractographic observations indicated that both studied coatings acted like protective barriers against hydrogen permeation. However, the surface quality in terms of pores and other superficial defects in the considered coatings remains a challenging issue. Full article
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