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Materials
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Corrosion Resistance and Protection of Metal Alloys
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Corrosion Resistance and Protection of Metal Alloys

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

Deadline for manuscript submissions: 20 December 2025 | Viewed by 1445

Special Issue Editors

Dr. Zhenyang Cai

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Guest Editor
School of Materials Science and Engineering, Central South University, Changsha 410083, China
Interests: metals and alloys; coatings; surface technology; additive manufacturing
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Lairong Xiao

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Central South University, Changsha 410083, China
Interests: metals and alloys; coatings; surface technology; additive manufacturing
Special Issues, Collections and Topics in MDPI journals
Dr. Sainan Liu

E-Mail Website
Guest Editor
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
Interests: advanced material surface engineering and sustainable applications; surface technology; coating
Special Issues, Collections and Topics in MDPI journals
Dr. Xiaojun Zhao

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Central South University, Changsha 410083, China
Interests: coating; structural ceramics; refractory metal
Special Issues, Collections and Topics in MDPI journals
Dr. Wei Li

E-Mail Website
Guest Editor
Powder Metallurgy Research Institute, Central South University, Changsha 410083, China
Interests: metals and alloys; coatings; surface technology; additive manufacturing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The corrosion resistance and protection of metal alloys are of utmost importance in various industries, ranging from construction to aerospace. Metal alloys are widely used for their excellent mechanical properties, but they are often vulnerable to corrosion, which can lead to structural failures, economic losses, and environmental concerns.

In recent years, significant progress has been made in understanding the corrosion mechanisms of metal alloys and developing effective protection strategies. This includes the use of advanced coatings, surface treatments, and corrosion inhibitors. Moreover, computational methods are increasingly being employed to predict corrosion behavior and design more corrosion-resistant alloys.

This Special Issue will showcase the latest research on the corrosion resistance and protection of metal alloys. We welcome contributions from researchers worldwide, including full papers, communications, and reviews. Paper topics may cover experimental and theoretical studies on corrosion mechanisms, new coating materials and techniques, surface modification methods, and the performance evaluation of corrosion protection systems.

We invite you to submit a manuscript to this Special Issue. Full papers, communications, and reviews are all welcome.

Dr. Zhenyang Cai
Prof. Dr. Lairong Xiao
Dr. Sainan Liu
Dr. Xiaojun Zhao
Dr. Wei Li
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

  • corrosion resistance
  • corrosion processes
  • surface technology
  • protection
  • electrochemical behavior
  • organic coatings
  • silver alloy films
  • composite coating
  • alloys
  • ceramics
  • oxidation protective coating

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

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Research

12 pages, 3862 KiB  
Article
Magnetic Properties and Corrosion Resistance of Sintered Nd-Fe-B Magnet Caused by Er69Fe31 Alloy Grain Boundary Addition
by Yongtao Dai, Kai Wang, Jing Xiang, Qingrong Yao, Zhao Lu and Jiang Wang
Materials 2025, 18(12), 2711; https://doi.org/10.3390/ma18122711 - 9 Jun 2025
Viewed by 221
Abstract
This work reports on the effect of the heavy rare earth element Er on Nd–Fe–B magnets by using a simple Er69Fe31 alloy additive, which is much less expensive than Dy and Tb elements. It was found that the corrosion resistance [...] Read more.
This work reports on the effect of the heavy rare earth element Er on Nd–Fe–B magnets by using a simple Er69Fe31 alloy additive, which is much less expensive than Dy and Tb elements. It was found that the corrosion resistance was improved with a minimal reduction in magnetic properties by rationally controlling the Er69Fe31 addition content. The main reason is that Er element partially replaces the Nd element at the edge of the main phase grain to form an (Er,Nd)2Fe14B shell with low HA, which leads to a decrease in coercivity. However, the improvement in the corrosion resistance is mainly due to the Er69Fe31 alloy addition, which slows down the corrosion rate. Simultaneously, an investigation was conducted into the different advantages that target magnets when subjected to diverse heat treatment methodologies. The above findings may lead to the development of applications for other rare earth elements, thereby accelerating the development of low-cost permanent magnets comparable to commercially available sintered Nd-Fe-B magnets. Full article
(This article belongs to the Special Issue Corrosion Resistance and Protection of Metal Alloys)
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16 pages, 9446 KiB  
Article
Corrosion Characteristics and Tensile Performance of Bolted Spherical Joints in Aggressive Environments
by Jianguo Li, Yanhong Li, Sheng Yang, Chenling Hao, Yun Yang, Chong Chen, Qingsong Zhou, Guanglin Yuan and Caifeng Lu
Materials 2025, 18(10), 2185; https://doi.org/10.3390/ma18102185 - 9 May 2025
Viewed by 316
Abstract
Bolted spherical joints (BSJs) are widely used in spatial grid structures owing to their clear force transmission paths and ease of on-site assembly. This study investigates the corrosion behavior and tensile performance of BSJs fabricated with #45 carbon steel joint spheres and 40Cr [...] Read more.
Bolted spherical joints (BSJs) are widely used in spatial grid structures owing to their clear force transmission paths and ease of on-site assembly. This study investigates the corrosion behavior and tensile performance of BSJs fabricated with #45 carbon steel joint spheres and 40Cr high-strength bolts (grade 10.9S) under chloride exposure under varying bolt screwing depths. Accelerated salt spray corrosion tests were conducted across different exposure cycles (20, 40, 60, and 80 cycles) and at screwing depths ranging from 0.8 d to 1.2 d, followed by uniaxial tensile testing. Results revealed that chloride-induced pitting corrosion was more pronounced on bolts than on joint spheres, with four distinct types of microscopic corrosion morphologies identified. Inadequate screwing depth (<1.0 d) led to pull-out failure, while greater depths (≥1.0 d) generally resulted in bolt fracture. Chloride exposure significantly reduced the ultimate tensile capacity of BSJs. For bolts with λ < 1.0, post-corrosion tensile strength dropped below the specification threshold, indicating a critical safety concern. Full article
(This article belongs to the Special Issue Corrosion Resistance and Protection of Metal Alloys)
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13 pages, 3850 KiB  
Article
Laser-Cladding Cu-Cr-X Coating on Cu Alloy for Longer Service Life in Electrical Applications
by Xing Li, Lekang Lu, Jiashu Fang, Junjia Liang, Yesong Yang, Xiaojun Zhao, Sainan Liu, Lairong Xiao and Zhenyang Cai
Materials 2025, 18(5), 1103; https://doi.org/10.3390/ma18051103 - 28 Feb 2025
Viewed by 649
Abstract
Advancements in electrical components have intensified the challenges for copper alloy wear resistance and high-temperature performance in electrical applications. The surface coating preparation of Cu alloys is crucial for enhancing their lifespan and promoting sustainable resource development. This study explored the microstructure and [...] Read more.
Advancements in electrical components have intensified the challenges for copper alloy wear resistance and high-temperature performance in electrical applications. The surface coating preparation of Cu alloys is crucial for enhancing their lifespan and promoting sustainable resource development. This study explored the microstructure and properties of Cu-Cr-X coatings (X = Mo/W, Al2O3/TiO2) on Cu alloy substrates via laser-cladding to improve wear resistance and hardness, vital for electrical component reliability and switching capacity. The process involved adjusting the power and reinforcing the phase particle size. The results showed hardness > 110 HV for all coatings (vs. 67.4 HV for the substrate). Cu-Cr-W achieved the highest hardness at 179 HV due to W dispersion and WCr precipitate reinforcement. It also maintained a stable CoF and the lowest wear rate (1.87 mg/km), with a fivefold wear resistance compared to the substrate alone. Cu-Cr-W excelled in lifespan extension and material loss reduction due to superior hardness, wear resistance, and conductivity. Full article
(This article belongs to the Special Issue Corrosion Resistance and Protection of Metal Alloys)
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