Environmental Corrosion and Oxidation of Alloy Coatings and Surfaces

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Thin Films".

Deadline for manuscript submissions: 20 June 2025 | Viewed by 1113

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Munir Rachid Corrosion Laboratory, Department of Materials Engineering, Federal University of São Carlos, Rodovia Washington Luís, São Carlos 13565-905, Brazil
Interests: electrochemical corrosion; high-temperature corrosion and oxidation; material engineering; material characterization; thermodynamics
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Special Issue Information

Dear Colleagues,

High-temperature/environmental corrosion and oxidation of metals (coatings/surfaces) and alloys (coatings/surfaces) are complex phenomena that occur when these materials are exposed to elevated temperatures (above 400 °C). Metals and their alloys exposed to ambient gases are often thermodynamically unstable and tend to react by forming scales, sulfides, carbides, nitrides, or a combination of corrosion products. The exact nature of the reaction products depends on the composition of the material and the environment in which it operates. Such corrosion reactions can lead to material degradation, including the loss of mechanical properties, thinning, and eventual failure. These deleterious effects have a significant impact on the performance and reliability of components and structures. Therefore, a comprehensive understanding of the underlying mechanisms and factors influencing high-temperature/environmental corrosion and oxidation is essential for the development of effective mitigation strategies and the selection of materials for high-temperature environments.

This Special Issue invites the submission of original research papers, short communications, and reviews focusing on corrosion mechanisms, kinetics, characterization of scales from both the structural and morphological perspectives, diffusion of the species involved in the processes, and other related topics. The scope includes metals and alloys exposed to elevated temperatures in various environments, including those containing oxygen, nitrogen, sulfur, carbon, and halogens. Studies on the use of coatings for corrosion and hot corrosion protection are highly encouraged.

Dr. Rodrigo da Silva
Guest Editor

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Keywords

  • electrochemical and chemical corrosion
  • corrosion mechanism
  • oxidation kinetics
  • scale characterization
  • corrosion thermodynamic calculation
  • coatings for oxidation and corrosion protection
  • design of high-temperature corrosion-resistant alloys

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Published Papers (1 paper)

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Research

13 pages, 14905 KiB  
Article
Examination of Oxide Formation in Oxidation of Inconel 600 and 625 at High Temperatures Using Phase Diagrams
by Dong-Hyuk Kim, Jaegu Choi and Seong-Ho Ha
Coatings 2024, 14(12), 1550; https://doi.org/10.3390/coatings14121550 - 11 Dec 2024
Viewed by 817
Abstract
Effects of main and trace elements on the formation of oxide in the oxidation behavior of Inconel 600 and 625 were investigated in this study using various calculated phase diagrams. After the isothermal oxidation tests at 1000 and 1100 °C, Nickel 201 for [...] Read more.
Effects of main and trace elements on the formation of oxide in the oxidation behavior of Inconel 600 and 625 were investigated in this study using various calculated phase diagrams. After the isothermal oxidation tests at 1000 and 1100 °C, Nickel 201 for comparison showed significant growth of an oxide layer corresponding to NiO, and the NiO layer consisted of oxide crystals with both equiaxed and columnar shapes. As the temperature increased, the growth of the oxide layer proceeded mainly through columnar crystals. On the other hand, Inconel 600 and 625 showed relatively thin oxide layers, which were confirmed to be mainly composed of Cr2O3. The Cr2O3 layer was composed of equiaxed fine crystals. In the case of Inconel 625, an intermediate layer was formed at the interface between Cr2O3 and the base metal. It was found that the surface segregation of Cr as the main alloying element influenced the formation of the oxide layer of two Inconel alloys, and that some elements disappeared from the base metal near the surface due to continuous surface segregation and vaporization. On the other hand, even some elements with trace amounts showed strong surface segregation and contributed to the formation of oxide layer. Full article
(This article belongs to the Special Issue Environmental Corrosion and Oxidation of Alloy Coatings and Surfaces)
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