Advances in Alloy Coatings: Tailored Performance for Modern Applications

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

Deadline for manuscript submissions: 25 October 2026 | Viewed by 4110

Special Issue Editors

School of Mechanical Engineering, Qilu Univerisity of Technology, Jinan 250353, China
Interests: laser cladding; high-entropy alloy; surface modification; solar energy
School of Mechanical Engineering, Qilu Univerisity of Technology, Jinan 250353, China
Interests: welding structural integrity assessment; laser cladding and remanufacturing; corrosion and protection
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Guest Editor
School of Mechanical Engineering, Qilu Univerisity of Technology, Jinan 250353, China
Interests: laser cladding; high-entropy alloy; additive manufacturing

Special Issue Information

Dear Colleagues,

In recent years, alloy coatings have emerged as critical components in enhancing the durability, functionality and performance of structural materials across diverse industries. The rapid advancements in material science, driven by the growing demands of modern applications, have catalyzed significant innovations in alloy coating technologies. These coatings are engineered to offer superior resistance to corrosion, wear, high temperatures and other extreme environmental conditions, making them indispensable in sectors such as aerospace, automotive, marine, energy, biomedical, and chemical processing industries.

This Special Issue aims to provide a comprehensive platform for researchers, engineers and industry experts to share their latest findings, innovative methodologies and emerging trends in the field of alloy coatings. We invite original research articles, review papers, and case studies that explore both fundamental and applied aspects of alloy coatings, including but not limited to the following topics:

  • Theoretical and experimental studies: Insights into the mechanisms of corrosion resistance, wear protection, and the environmental durability of alloy coatings.
  • Innovative alloy coating compositions: Development of new alloy systems with enhanced mechanical, chemical, and thermal properties.
  • Advanced deposition techniques: Coatings produced via electroplating, thermal spray, physical and chemical vapor deposition, laser cladding, additive manufacturing, and other state-of-the-art processes.
  • Performance under extreme conditions: Experimental investigations of coatings exposed to high temperatures, aggressive chemicals, high-stress environments, and dynamic loading conditions.
  • Degradation mechanisms: Understanding coating failure modes, including corrosion, oxidation, fatigue, wear, and their synergistic effects.
  • Modeling and simulation: Computational approaches to predict the performance, durability, and reliability of alloy coatings in various service environments.
  • Multifunctional coatings: Exploration of coatings with combined properties, such as self-healing, anti-fouling, anti-icing, or smart sensing capabilities.
  • Testing and characterization: Advanced methodologies for evaluating the mechanical, chemical, and electrochemical behavior of coatings, including accelerated aging tests and in situ monitoring techniques.

Dr. Yuexia Lv
Dr. Wei Zhao
Dr. Hui Zhang
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 250 words) can be sent to the Editorial Office for assessment.

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. Coatings is an international peer-reviewed open access monthly 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

  • alloy coatings
  • corrosion resistance
  • advanced deposition techniques
  • multifunctional coatings
  • durability and performance

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Published Papers (3 papers)

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Research

24 pages, 12119 KB  
Article
Effect of HVOF Spraying Parameters on the Spraying Process and Particle Behavior of Amorphous Alloy Coatings
by Jianxing Yu, Zewei Dong, Yang Yu and Ruilong Gao
Coatings 2026, 16(2), 246; https://doi.org/10.3390/coatings16020246 - 14 Feb 2026
Viewed by 617
Abstract
High-velocity oxygen fuel (HVOF) spraying technology has been widely used to protect and repair the surface of mechanical parts and extend their service life. Spraying Fe-based amorphous alloy coatings can improve the corrosion resistance and fatigue resistance of the substrate. It is crucial [...] Read more.
High-velocity oxygen fuel (HVOF) spraying technology has been widely used to protect and repair the surface of mechanical parts and extend their service life. Spraying Fe-based amorphous alloy coatings can improve the corrosion resistance and fatigue resistance of the substrate. It is crucial to quantitatively elucidate the influence of process parameters on spraying behavior to achieve high-quality coatings. This study utilized a computational fluid-dynamics model to analyze the flight trajectories of flames and particles during HVOF spraying. Additionally, how parameters such as the O/F ratio, parallel barrel length, Laval nozzle diameter, and nitrogen flow rate affect flame and particle behavior was examined. These parameters were found to significantly impact the overall spraying process. As a result, the optimum structure and properties are obtained. In this study, the spray gun parameters were investigated to provide better guidance for the process and improve the quality and efficiency of the coating system. Full article
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19 pages, 4008 KB  
Article
Enhanced PVDF Coating via Zr-Based Pretreatment on AZ31 Magnesium Alloy
by Hailuo Fu, Chenghao Zhu, Dali Wei, Qing Lin, Yihan Jiao and Shuyang Liu
Coatings 2025, 15(12), 1501; https://doi.org/10.3390/coatings15121501 - 18 Dec 2025
Cited by 1 | Viewed by 657
Abstract
Magnesium alloys are promising biodegradable orthopedic implant materials, but their clinical translation is hindered by rapid, unregulated corrosion in physiological environments. Polyvinylidene fluoride (PVDF) coating has attracted substantial attention for addressing the issue above. However, it suffers from insufficient interfacial adhesion to Mg [...] Read more.
Magnesium alloys are promising biodegradable orthopedic implant materials, but their clinical translation is hindered by rapid, unregulated corrosion in physiological environments. Polyvinylidene fluoride (PVDF) coating has attracted substantial attention for addressing the issue above. However, it suffers from insufficient interfacial adhesion to Mg alloy substrates. In this work, we propose a Zr-based pretreatment strategy to enhance PVDF coatings. The pretreatment was performed via a chemical conversion deposition method, which fabricated a Zr-based film on AZ31 magnesium alloy and greatly promoted the adhesion of the following PVDF coating. Interface analysis showed that coating adhesion was improved from 0.44 MPa to 2.48 MPa. In light of this, corrosion protection performance was significantly improved. Electrochemical tests in simulated body fluid revealed the enhanced PVDF coating shifted the corrosion potential from −1.594 V to −1.392 V and reduced the corrosion current density by over five orders of magnitude. Immersion tests also showed stable pH level, low weight loss, and good hydrophobicity with the enhanced PVDF coating. In summary, the enhanced PVDF coating provides excellent corrosion protection for magnesium alloys, thus boosting their biomedical use. Full article
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11 pages, 935 KB  
Article
Rescue Blankets in Direct Exposure to Lightning Strikes—An Experimental Study
by Markus Isser, Wolfgang Lederer, Daniel Schwaiger, Mathias Maurer, Sandra Bauchinger and Stephan Pack
Coatings 2025, 15(8), 868; https://doi.org/10.3390/coatings15080868 - 23 Jul 2025
Viewed by 2388
Abstract
Lightning strikes pose a significant risk during outdoor activities. The connection between conventionally used rescue blankets in alpine emergencies and the risk of lightning injury is unclear. This experimental study investigated whether rescue blankets made of aluminum-coated polyethylene terephthalate increase the likelihood of [...] Read more.
Lightning strikes pose a significant risk during outdoor activities. The connection between conventionally used rescue blankets in alpine emergencies and the risk of lightning injury is unclear. This experimental study investigated whether rescue blankets made of aluminum-coated polyethylene terephthalate increase the likelihood of lightning injuries. High-voltage experiments of up to 2.5 MV were conducted in a controlled laboratory setting, exposing manikins to realistic lightning discharges. In a balanced test environment, two conventionally used brands were investigated. Upward leaders frequently formed on the edges along the fold lines of the foils and were significantly longer in crumpled rescue blankets (p = 0.004). When a lightning strike occurred, the thin metallic layer evaporated at the contact point without igniting the blanket or damaging the underlying plastic film. The blankets diverted surface currents and prevented current flow to the manikins, indicating potentially protective effects. The findings of this experimental study suggest that upward leaders rise from the edge areas of rescue blankets, although there is no increased risk for a direct strike. Rescue blankets may even provide partial protection against exposure to electrical charges. Full article
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