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High-Entropy Alloys in Surface Engineering: Properties and Performance
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High-Entropy Alloys in Surface Engineering: Properties and Performance

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

Deadline for manuscript submissions: closed (31 March 2026) | Viewed by 1185

Special Issue Editor

Dr. Mengdi Zhang

E-Mail Website
Guest Editor
School of Quality and Technical Supervision, Hebei University, Baoding, China
Interests: corrosion and mechanical properties of high-/medium-entropy alloys

Special Issue Information

Dear Colleagues,

This Special Issue, titled "High-Entropy Alloys in Surface Engineering: Properties and Performance", aims to widely solicit high-quality research papers and in-depth reviews from scholars and researchers around the world, presenting the latest experimental achievements and theoretical breakthroughs in the field of high-entropy alloy coatings in a comprehensive and systematic manner. We hope that through this platform, we can promote the exchange and collision of academic ideas, facilitate the dissemination of innovative research findings, and jointly explore the future development directions and potential opportunities in this field.

The scope of contributions for this Special Issue covers, but is not limited to, the following areas: mechanical properties, oxidation properties, wear resistance, corrosion behavior, phase structure analysis, theoretical modeling research, high-throughput analysis methods, and industrial application practices of high-entropy alloy coatings. We sincerely welcome various types of submissions, including original research papers, systematic review articles, and forward-looking opinion pieces. Whether your research focuses on basic theoretical innovation or on solving practical engineering problems, we look forward to your sharing of unique research perspectives and achievements.

We look forward to receiving your contributions.

Dr. Mengdi Zhang
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 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

  • high-entropy alloy
  • surface technology
  • oxidation resistance
  • corrosion performance
  • mechanical behaviour
  • machine learning

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

Published Papers (2 papers)

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Research

16 pages, 5292 KB  
Article
Self-Supported High-Entropy Alloy Selenide Electrodes for Efficient Acid/Alkaline Amphoteric Water Electrolysis
by Tong Zhai, Shicao Li, Shouquan Xiang, Hua Tan, Junsheng Yang and Huangchu Chen
Coatings 2026, 16(4), 398; https://doi.org/10.3390/coatings16040398 - 25 Mar 2026
Viewed by 501
Abstract
In this work, Fe, Co, Ni, Cu, and Mo powders were used as starting materials to prepare high-entropy alloy (HEA) thin films by a coating and vacuum sintering process. Using the HEA thin film as the substrate, selenium was subsequently deposited by chemical [...] Read more.
In this work, Fe, Co, Ni, Cu, and Mo powders were used as starting materials to prepare high-entropy alloy (HEA) thin films by a coating and vacuum sintering process. Using the HEA thin film as the substrate, selenium was subsequently deposited by chemical vapor deposition (CVD) to obtain high-entropy alloy selenide thin films (HEASe). The phase structure, surface chemical states, morphology, and elemental distribution of the porous films were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). The electrocatalytic hydrogen evolution performance of the electrodes was evaluated using a three-electrode configuration in 0.5 M H2SO4, 1 M KOH, 1 M KOH + 0.5 M NaCl, and 1 M KOH + 0.5 M Na2S solutions. The results indicate that the HEA selenide thin-film electrodes exhibit favorable electrocatalytic behavior in all four electrolytes. Among them, HEASe-450 shows the best overall performance. In 0.5 M H2SO4, it requires an overpotential of only 57.6 mV to reach a current density of 10 mA cm−2, with a Tafel slope of 146.96 mV dec−1. In 1 M KOH, the overpotential at 10 mA cm−2 is 50.1 mV, and the corresponding Tafel slope is 142 mV dec−1. In 1 M KOH + 0.5 M NaCl, the overpotential is 52.7 mV with a Tafel slope of 122.72 mV dec−1. In 1 M KOH + 0.5 M Na2S, an overpotential of 85 mV is required, and the Tafel slope increases to 236 mV dec−1. Full article
(This article belongs to the Special Issue High-Entropy Alloys in Surface Engineering: Properties and Performance)
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19 pages, 17401 KB  
Article
Effects of Different Sulfidation Temperatures on the Hydrogen Evolution Reaction Performance of Fe-Co-Ni-Mo-Cu High-Entropy Alloys
by Yuzuo Liu, Yulong Feng, Zhihao He, Junsheng Yang, Huangchu Chen and Hua Tan
Coatings 2026, 16(3), 362; https://doi.org/10.3390/coatings16030362 - 13 Mar 2026
Viewed by 367
Abstract
In this study, FeCoNiMoCu high-entropy alloy thin films were sulfided at different temperatures ranged from 250 °C to 450 °C by chemical vapor deposition, and the resultant sulfided Fe-Co-Ni-Mo-Cu-S alloys were characterized by means of XRD, SEM, XPS and EDS. HER performance tests [...] Read more.
In this study, FeCoNiMoCu high-entropy alloy thin films were sulfided at different temperatures ranged from 250 °C to 450 °C by chemical vapor deposition, and the resultant sulfided Fe-Co-Ni-Mo-Cu-S alloys were characterized by means of XRD, SEM, XPS and EDS. HER performance tests were carried out in four electrolyte systems, namely 0.5 M H2SO4, 1 M KOH, 1 M KOH + 0.5 M NaCl and 1 M KOH + 1 M Na2S. The results indicated that the as-prepared electrodes exhibited low HER overpotentials in all four electrolytes, with the optimal catalytic performance consistently achieved at a sulfidation temperature of 350 °C. Among the tested systems, the electrode delivered the best HER activity in 0.5 M H2SO4, showing an overpotential of merely 53 mV and a Tafel slope of 86.72 mV dec−1 at a current density of 10 mA·cm−2. In 1.0 M KOH, the overpotential required to reach the same current density was 98 mV with a Tafel slope of 72.43 mV dec−1. For the mixed electrolyte of 1 M KOH and 0.5 M NaCl, the overpotential at 10 mA·cm−2 was 142 mV accompanied by a Tafel slope of 49.51 mV dec−1. In contrast, the 1 M KOH + 1 M Na2S electrolyte yielded an overpotential of 77 mV and a Tafel slope of 84.01 mV dec−1 at the identical current density. HER tests revealed that the sulfidation temperature exerts a significant influence on the formation and distribution of active phases of multi-metal sulfides (e.g., FeSx, CoSx, NiSx, MoS2) on the electrode surface. The electrodes prepared at an appropriate sulfidation temperature exhibit a larger specific surface area and enhanced hydrogen evolution reaction performance for water electrolysis. These findings may provide useful references for other researchers in the design and fabrication of high-entropy alloy-based HER catalysts. Full article
(This article belongs to the Special Issue High-Entropy Alloys in Surface Engineering: Properties and Performance)
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