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Corrosion, Fatigue and Corrosion Protection of Metals and Their Alloys...
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Corrosion, Fatigue and Corrosion Protection of Metals and Their Alloys in Various Environments (2nd Edition)

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

Deadline for manuscript submissions: 20 April 2026 | Viewed by 2562

Special Issue Editor

Dr. Florina Branzoi

E-Mail Website
Guest Editor
Institute of Physical Chemistry-Ilie Murgulescu of Romanian Academy, Bucharest, Romania
Interests: electrochemistry; corrosion and corrosion protection; organic coatings; nanocomposite; electrochemical methods; surface analysis FT-IR; SEM
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Metallic materials are widely used in diversified sectors, such as chemical manufacturing, oil making and refining, the construction industry, machinery equipment, technological equipment and marine practices. While corrosion is a significant part of the destruction of manufacturing structures, a large number of investigations have been accomplished to find procedures to diminish corrosion and “wear costs”. The corrosion of metals and their alloys exhibits an appreciable economic and industrial concern. In industrial procedures, the metal surfaces employed are exposed to highly aggressive acids and alkali environments, which provoke substantial corrosion and deterioration.

Acidic and alkaline solutions are employed in a number of technological processes that currently cause severe metallic corrosion of varied metal structures and equipment in manufacturing environments. Some explorations carried out for the protection of metallic materials in the field of engineering have determined that composite coatings are utilized as the most efficacious and simple way to hinder the deterioration of these materials in corrosive media. The application of inhibitors, using organic, metallic or inorganic coverings; cathodic and anodic defenses; electropolymerization methods and nanostructured coatings are techniques for metallic materials’ anticorrosion protection.

The purpose of this Special Issue, "Corrosion, Fatigue and Corrosion Protection of Metals and Their Alloys in Various Environments (2nd Edition)" is to bring together and specify the various corrosion, fatigue and corrosion-endurance techniques, developments and applications from the perspective of the surface protection of diverse materials in different corrosive environments. In this Special Issue, original research articles and reviews are welcome.

  • Mechanisms and methods of corrosion control;
  • The principles and practices of metals and their alloys;
  • Theoretical and experimental study of organic and inorganic coatings for corrosion protection;
  • New developments in composite coatings and related materials;
  • Chemical and physical properties of organic and inorganic coatings and related materials;
  • Performance, investigation and analysis of various coatings;
  • High-performance experimental and processing coatings with exposure to high temperatures, high stress and different immersion times;
  • Corrosion, wear, fatigue and fracturing of metals and their alloys;
  • Computer modelling to provide protection, performance, stability and resistance properties in aggressive media.

Dr. Florina Branzoi
Guest Editor

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

  • corrosion processes
  • electrochemical methods
  • corrosion protection
  • organic coatings
  • inorganic coatings
  • nanocomposite film
  • corrosion inhibitor
  • surface analysis
  • mechanical properties
  • microstructure
  • fatigue
  • metallic materials
  • computer modeling

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Published Papers (5 papers)

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Research

13 pages, 6117 KB  
Article
The Influence of Laser Shock Peening on the Microstructure and Mechanical Properties of AH32 Steel
by Xu Pei, Yiming Shen, Zhaomei Xu, Pengfei Li and Yuchun Peng
Materials 2025, 18(20), 4679; https://doi.org/10.3390/ma18204679 - 12 Oct 2025
Viewed by 279
Abstract
The mechanical integrity of shipbuilding steel under demanding maritime service conditions is a pivotal factor for ensuring the structural safety and operational longevity of vessels. This research employs laser shock peening (LSP) to augment the surface performance of AH32 steel and carries out [...] Read more.
The mechanical integrity of shipbuilding steel under demanding maritime service conditions is a pivotal factor for ensuring the structural safety and operational longevity of vessels. This research employs laser shock peening (LSP) to augment the surface performance of AH32 steel and carries out a comprehensive analysis of the influence and underlying mechanisms of LSP on both the microstructural evolution and mechanical properties of the material. The results indicate that the LSP treatment successfully introduced a high magnitude residual compressive stress (−162 MPa) at the surface of AH32 steel. Additionally, the surface hardness of LSP-1 and LSP-2 increased by 7.3% and 14.7%, respectively. The tensile test results indicate that Sample LSP-2 achieved a 25.8% improvement in elongation while exhibiting only a 5.9% reduction in ultimate tensile strength. Friction and wear tests demonstrated that the average coefficient of friction for the samples treated with LSP decreased by approximately 18%, while the wear rate reduced significantly by over 40%. Full article
(This article belongs to the Special Issue Corrosion, Fatigue and Corrosion Protection of Metals and Their Alloys in Various Environments (2nd Edition))
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22 pages, 5445 KB  
Article
Effect of Adding Molybdenum on Microstructure, Hardness, and Corrosion Resistance of an AlCoCrFeNiMo0.25 High-Entropy Alloy
by Mariusz Walczak, Wojciech J. Nowak, Wojciech Okuniewski and Dariusz Chocyk
Materials 2025, 18(19), 4566; https://doi.org/10.3390/ma18194566 - 30 Sep 2025
Viewed by 315
Abstract
Recent literature reports have shown that individual HEAs, especially those of the AlCoCrFeNi composition system alloyed with appropriately selected elements, exhibit excellent mechanical properties and corrosion resistance, making them promising candidates for replacing conventional materials such as austenitic steels in corrosive environments. Therefore, [...] Read more.
Recent literature reports have shown that individual HEAs, especially those of the AlCoCrFeNi composition system alloyed with appropriately selected elements, exhibit excellent mechanical properties and corrosion resistance, making them promising candidates for replacing conventional materials such as austenitic steels in corrosive environments. Therefore, in the present study, the high-entropy alloy AlCoCrFeNiMo0.25 was examined and compared with AISI 304L steel and the reference alloy AlCoCrFeNi. The HEA was produced by arc melting in vacuum. The effect of molybdenum addition (5% at.) on the structure, mechanical properties, and corrosion resistance was evaluated. Potentiodynamic polarization and electrochemical impedance spectroscopy tests were carried out in a 3.5% NaCl solution in a three-electrode electrochemical system. The addition of molybdenum to AlCoCrFeNiMox alloy additionally caused, along with the BCC phase, the formation of σ phase and FCC phase (less than 1%), as well as changes in the microstructure, leading to the fragmentation of grains and the formation of a mosaic structure. On the basis of nanoindentation tests, it was established that the addition of Mo increases hardness and elastic modulus and improves nanoindentation coefficients H/E and H3/E2, as well as an increase in the elastic recovery index while decreasing plasticity index (vs. the reference equiatomic HEA). This indicates the improvement of anti-wear properties with impact loading resistance. In turn, electrochemical tests have shown that the addition of Mo improves corrosion resistance. Corrosion pitting develops in Al- and Ni-rich areas of HEA alloys, as a result of galvanic microcorrosion related to Cr chemical segregation. In general, the addition of 5% Mo results in a fine-grained mosaic structure, which primarily translates into favorable nanoindentation and corrosion properties of the AlCoCrFeNiMo0.25 alloy. Full article
(This article belongs to the Special Issue Corrosion, Fatigue and Corrosion Protection of Metals and Their Alloys in Various Environments (2nd Edition))
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18 pages, 2832 KB  
Article
Corrosion Behavior of Biocompatible Ti3Mn Alloy in Different Physiological Conditions for Biomedical Applications
by Clara Mihaela Soare, Cristina Jimenez-Marcos, Santiago Brito-Garcia, Julia Claudia Mirza-Rosca and Ionelia Voiculescu
Materials 2025, 18(18), 4346; https://doi.org/10.3390/ma18184346 - 17 Sep 2025
Viewed by 396
Abstract
Titanium–manganese alloys have emerged as a promising option of β-phase titanium alloys, which have recently gained popularity thanks to their exceptional cold strength, deformability, and high specific strength. In this study, the vacuum arc melting process was used to obtain a Ti3Mn alloy, [...] Read more.
Titanium–manganese alloys have emerged as a promising option of β-phase titanium alloys, which have recently gained popularity thanks to their exceptional cold strength, deformability, and high specific strength. In this study, the vacuum arc melting process was used to obtain a Ti3Mn alloy, and its behavior in three physiological conditions was analyzed: at room temperature, simulated fever conditions (at 40 °C), and simulated severe infection conditions (pH = 1.2). Optical and scanning electron microscopy were employed to study the effect of Mn addition on the Ti-base alloy microstructure. It was observed the formation of fine precipitates of Mn2Ti, localized at the grain boundaries, allow for the increase in microhardness and blocked their growth. The beta phase of titanium was obtained as fine lamellae with a low level of porosity. The microhardness values were higher than those reported for cp-Ti. The electrochemical tests have shown a high resistance to corrosion in the three analyzed conditions. On the sample’s surface, there is a passive bilayer film, composed of a porous one being in contact with the physiological liquid and a compact one in contact with the bulk alloy. The results obtained suggest that Ti3Mn alloy can be a promising low-cost biomaterial for biomedical applications. Full article
(This article belongs to the Special Issue Corrosion, Fatigue and Corrosion Protection of Metals and Their Alloys in Various Environments (2nd Edition))
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21 pages, 11477 KB  
Article
Effect of Ultrasonic Treatment on Chemical Stripping Behavior of Aluminum Coating on K6509 Co-Based Superalloy
by Yuanyuan Jin, Cheng Xie, Ke Sun, Zehuan Li, Xin Wang, Xin Ma, Hui Wang, Rongrong Shang, Xuxian Zhou, Yidi Li and Yunping Li
Materials 2025, 18(17), 3979; https://doi.org/10.3390/ma18173979 - 25 Aug 2025
Viewed by 771
Abstract
In this study, 10% nitric acid was employed to remove the aluminum coating on the cobalt-based superalloy K6509, with a focus on elucidating the corrosion mechanism and evaluating the effect of ultrasonic on the removal process. The results shows that ultrasonic treatment (40 [...] Read more.
In this study, 10% nitric acid was employed to remove the aluminum coating on the cobalt-based superalloy K6509, with a focus on elucidating the corrosion mechanism and evaluating the effect of ultrasonic on the removal process. The results shows that ultrasonic treatment (40 kHz) significantly improves coating removal efficiency, increasing the maximum corrosion rate by 46.49% from 2.5413 × 10−7 g·s−1·mm−2 to 4.7488 × 10−7 g·s−1·mm−2 and reducing removal time from 10 min to 6 min. This enhancement is attributed to cavitation effect of ultrasonic bubbles and the shockwave-accelerated ion diffusion, which together facilitate more efficient coating degradation and results in a smoother surface. In terms of corrosion behavior, the difference in phase composition between the outer layer and the interdiffusion zone (IDZ) plays a decisive role. The outer layer is primarily composed of β-(Co,Ni)Al phase, which is thermodynamically less stable in acidic environments and thus readily dissolves in 10% HNO3. In contrast, the IDZ mainly consists of Cr23C6, which exhibit high chemical stability and a strong tendency to passivate. These characteristics render the IDZ highly resistant to nitric acid attack, thereby forming a protective barrier that limits acid penetration and helps maintain the integrity of the substrate. Full article
(This article belongs to the Special Issue Corrosion, Fatigue and Corrosion Protection of Metals and Their Alloys in Various Environments (2nd Edition))
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14 pages, 8664 KB  
Article
Corrosion Fatigue of a Nickel-Based Superalloy Disc Rotor with Salt in Air and Sulphur Dioxide Environments
by Yong Li, Helen Davies, Mark Hardy, Catherine Jackson and Mark Whittaker
Materials 2025, 18(16), 3819; https://doi.org/10.3390/ma18163819 - 14 Aug 2025
Viewed by 439
Abstract
The fatigue performance of a recently developed nickel superalloy disc was investigated at 700 °C in two environments: air and sulphur dioxide (SO2). Prior to testing, specimens were coated with various amounts of sodium sulphate (Na2SO4) and [...] Read more.
The fatigue performance of a recently developed nickel superalloy disc was investigated at 700 °C in two environments: air and sulphur dioxide (SO2). Prior to testing, specimens were coated with various amounts of sodium sulphate (Na2SO4) and sodium chloride (NaCl) mixed salt (98% Na2SO4 + 2% NaCl), and the influence of both environment and salt loading on corrosion fatigue were assessed. Preliminary results showed that salt exposure in air reduced fatigue strength, with greater damage at higher salt levels. In the SO2 environment, fatigue strength dropped even more due to low-temperature hot corrosion (LTHC). The details of the corrosion morphology formed in both air and SO2 environments are discussed. Full article
(This article belongs to the Special Issue Corrosion, Fatigue and Corrosion Protection of Metals and Their Alloys in Various Environments (2nd Edition))
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