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Corrosion and Protection of Metals and Alloys: Recent Advances and...
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Corrosion and Protection of Metals and Alloys: Recent Advances and Future Prospects

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Corrosion".

Deadline for manuscript submissions: closed (20 April 2024) | Viewed by 1835

Special Issue Editors

Prof. Dr. Marina Cabrini

E-Mail Website
Guest Editor
Department of Engineering and Applied Sciences, University of Bergamo, 24044 Dalmine, BG, Italy
Interests: electrochemical and corrosion; environmentally assisted cracking; hydrogen diffusion and embrittlement; corrosion of additive manufactured alloys; biomaterials
Special Issues, Collections and Topics in MDPI journals
Dr. Alessandro Carrozza

E-Mail Website
Guest Editor
Department of Engineering and Applied Sciences, University of Bergamo, 24044 Dalmine, BG, Italy
Interests: corrosion behavior; hydrogen embrittlement; additive manufacturing; titanium alloys; heat treatments; mechanical properties

Special Issue Information

Dear Colleagues,

Several studies published during the last decades have emphasized that the corrosion of materials costs society 3-5% of GDP yearly. This is mainly due to the necessity to rebuild or restore preexisting damaged structures, resulting in a significant economic and environmental impact. Furthermore, most of these expenses are avoidable via proper material selection. Therefore, the topic of corrosion protection and prevention strategies is a hot topic nowadays. As a consequence of this, several approaches are being thoroughly investigated, ranging from protective coatings to inherently corrosion-resistant alloys. However, the corrosion behavior of metals is greatly dependent on the environmental conditions of application, but also composition, microstructure and surface finishing. Additionally, the rise of new technologies and materials (e.g., additive manufacturing, new joining techniques, high entropy alloys) results in innovative materials and microstructures, characterized by unique combinations of properties and corrosion behaviors.

This Special Issue aims at collecting works dealing with the corrosion behavior of metals and alloys. Additionally, authors focusing on corrosion protection mechanisms, surface treatments and innovative characterization techniques are very welcome to submit their works. Full papers, communications and reviews dealing with traditional and/or innovative materials will be accepted.

Prof. Dr. Marina Cabrini
Dr. Alessandro Carrozza
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. Materials is an international peer-reviewed open access semimonthly 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

  • metals
  • alloys
  • corrosion
  • electrochemical techniques
  • coatings
  • stress corrosion cracking
  • corrosion protection
  • environmental assisted cracking
  • hydrogen diffusion
  • hydrogen embrittlement

Published Papers (3 papers)

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Research

15 pages, 2830 KiB  
Article
Corrosion Study on Duplex Stainless Steel UNS S31803 Subjected to Solutions Containing Chloride Ions
by Lucas Menezes de Souza, Elaine Pereira, Thiago Barreto da Silva Amaral, Sergio Neves Monteiro and Afonso Rangel Garcez de Azevedo
Materials 2024, 17(9), 1974; https://doi.org/10.3390/ma17091974 - 24 Apr 2024
Viewed by 251
Abstract
In the present work, the influence of a corrosive environment and temperature on the corrosion resistance properties of duplex stainless steel S31803 was evaluated. The corrosive process was carried out using solutions of 1.5% HCl (m/m) and 6% FeCl3 (m/m), at temperatures [...] Read more.
In the present work, the influence of a corrosive environment and temperature on the corrosion resistance properties of duplex stainless steel S31803 was evaluated. The corrosive process was carried out using solutions of 1.5% HCl (m/m) and 6% FeCl3 (m/m), at temperatures of 25 and 50 °C. The microstructure of UNS S31803 duplex stainless steel is composed of two phases, ferrite and austenite, oriented in the rolling direction, containing a ferrite percentage of 46.2% in the rolling direction and 56.1% in the normal direction. Samples, when subjected to corrosive media and temperature, tend to decrease their mechanical property values. It was observed, in both corrosive media, that with increasing test temperature, there is an increase in the corrosion rate, both uniform and pitting. The sample in HCl solution obtained a uniform corrosion rate of 0.85% at 25 °C and 0.92% at 50 °C and pitting rates of 0.77% and 1.47% at the same temperatures, respectively. When tested in FeCl3 solution, it obtained uniform corrosion of 0.0006% and 0.93% and pitting of 0.53% and 18.5%, at the same temperatures. A reduction in dissolution potentials is also noted, thus characterizing greater corrosion in the samples with increasing temperature. Full article
(This article belongs to the Special Issue Corrosion and Protection of Metals and Alloys: Recent Advances and Future Prospects)
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18 pages, 13272 KiB  
Article
Comparing Electrochemical Passivation and Surface Film Chemistry of 654SMO Stainless Steel and C276 Alloy in Simulated Flue Gas Desulfurization Condensates
by Luhai Liao, Yifan Cheng, He Zhang, Xuwen Yuan and Fengguang Li
Materials 2024, 17(8), 1827; https://doi.org/10.3390/ma17081827 - 16 Apr 2024
Viewed by 333
Abstract
This research examines the behavior of electrochemical passivation and the chemistry of surface films on 654SMO super austenitic stainless steel and C276 nickel-based alloy in simulated condensates from flue gas desulfurization in power plant chimneys. The findings indicate that the resistance to polarization [...] Read more.
This research examines the behavior of electrochemical passivation and the chemistry of surface films on 654SMO super austenitic stainless steel and C276 nickel-based alloy in simulated condensates from flue gas desulfurization in power plant chimneys. The findings indicate that the resistance to polarization of the protective film on both materials initially rises and then falls with either time spent in the solution or the potential of anodic polarization. Comparatively, 654SMO exhibits greater polarization resistance than C276, indicating its potential suitability as a chimney lining material. Mott–Schottky analysis demonstrates that the density of donors in the passive film formed on 654SMO exceeds that on C276, potentially due to the abundance of Fe oxide in the passive film, which exhibits the characteristics of an n-type semiconductor. The primary components of the passive films on both materials are Fe oxides and Cr oxides. The formation of a thin passive film on C276 in the simulated condensates is a result of the low Gibbs free energy of nickel oxide and low Cr content. The slower diffusion coefficient of point defects leads to the development of a thicker and more compact passive film on the surface of 654SMO. Full article
(This article belongs to the Special Issue Corrosion and Protection of Metals and Alloys: Recent Advances and Future Prospects)
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16 pages, 8481 KiB  
Article
Investigating the Corrosive Influence of Chloride Ions on Slag Recovery Machine Inner Guide Wheel in Power Plants
by Dalong Hu, Xiaohan Ma, Jintao Bai, Yongzhe Fan, Yaohong Yu, Ruina Ma, Jiangtao Zhang, An Du, Tianhao Xi, Xue Zhao and Shengxing Wang
Materials 2024, 17(2), 457; https://doi.org/10.3390/ma17020457 - 18 Jan 2024
Viewed by 633
Abstract
An important method that coal-fired power plants use to realise low-cost zero discharge of desulfurisation wastewater (FGD wastewater) is to utilise wet slag removal systems. However, the high Cl− content of FGD wastewater in wet slag removal systems causes environmental damage. In [...] Read more.
An important method that coal-fired power plants use to realise low-cost zero discharge of desulfurisation wastewater (FGD wastewater) is to utilise wet slag removal systems. However, the high Cl− content of FGD wastewater in wet slag removal systems causes environmental damage. In this study, the corrosion behaviour of the inner guide wheel material, 20CrMnTi, was studied using dynamic weight loss and electrochemical methods. X-ray diffraction, scanning electron microscopy, and energy spectroscopy were used to analyse the organisational and phase changes on the surfaces and cross sections of the samples at different Cl− concentrations. The corrosion rate increased with the Cl− concentration up to 20 g/L, but it decreased slightly when the Cl− concentration exceeded 20 g/L. In all the cases, the corrosion rate exceeded 0.8 mm/a. The corrosion product film density initially increased and then decreased as the Cl− concentration increased. The corrosion products comprised mainly α-FeOOH, γ-FeOOH, β-FeOOH, Fe3O4, and γ-Fe2O3. Full article
(This article belongs to the Special Issue Corrosion and Protection of Metals and Alloys: Recent Advances and Future Prospects)
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