Multifunctional Coatings in Alloys/Steels/Metals/Composites: Numerical Simulation, Techniques, Microstructures, and Mechanical Properties

A special issue of Coatings (ISSN 2079-6412).

Deadline for manuscript submissions: 31 May 2026 | Viewed by 1548

Special Issue Editors


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Guest Editor
Department of Metallurgy and Recycling, Faculty of Materials Science, Silesian University of Technology, Krasinskiego 8, 40-019 Katowice, Poland
Interests: extractive metallurgy; recycling; biomass; reduction processes; metal evaporation; metal casting; alloy modification
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Metallurgy and Recycling, Faculty of Materials Science, Silesian University of Technology, Krasinskiego 8, 40-019 Katowice, Poland
Interests: casting of non-ferrous metal alloys, especially Al and Mg alloys; crystallization; thermal analysis; identification of intermetallic phases, mainly iron phases; recycling of Al alloys; porosity; mechanical properties

Special Issue Information

Dear Colleagues,

High-end components for aviation, aerospace, and green energy, among others, must meet extremely high requirements in terms of surface properties. Conventional surface strengthening methods, such as induction hardening and spraying, are unable to meet these requirements. Multifunctional laser technologies show exceptional potential for improving the surface properties of metallic materials, which is why they are considered universal methods for improving surface resistance in modern industrial systems. Laser surface modification technologies utilize the characteristics of high-energy-density laser beams to rapidly process locally sensitive and operational areas of products, thereby achieving the desired surface microstructure effects and significantly extending their service life. The preparation of high-performance coatings on material surfaces is of great importance for the selection, design, and production of critical components.

This Special Issue aims to bring together the latest results of experimental research on multifunctional coatings on metal alloy products, metals, and composites. In addition, this Special Issue will include publications on advanced numerical simulation methods and the structural, tribological, and chemical characteristics of various types of coatings, such as organic, bio-based, metallic, and sol-gel coatings, as well as pretreatments. The method of producing these coatings is also designed to enhance the corrosion resistance of products used in various environments.

Dr. Tomasz Matuła
Prof. Dr. Jarosław Pia̧tkowski
Guest Editors

Manuscript Submission Information

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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

  • functional coatings
  • alloys
  • steels
  • metals
  • composites
  • abrasion resistance
  • microstructure
  • heat treatment
  • chemical treatment
  • surface layer modification
  • crystallization
  • ATD thermal analysis
  • DSC scanning calorimetry

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Published Papers (1 paper)

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Research

9 pages, 2240 KB  
Article
Controlling the Scandium Gradient and Microstructure in AlN Thin Films via a Magnetron Sputtering-Ion Implantation Strategy
by Xiaolu Yuan, Xueyang Bai, Ke Huang, Junjun Wei, Liangxian Chen, Jinlong Liu, Chengming Li and Wenrui Wang
Coatings 2025, 15(12), 1481; https://doi.org/10.3390/coatings15121481 - 15 Dec 2025
Viewed by 733
Abstract
Scandium (Sc)-doped aluminum nitride (AlN) thin films are critical for high-frequency, high-power surface acoustic wave (SAW) devices. A composite Sc doping strategy for AlN thin films is proposed, which combines magnetron sputtering pre-doping with post-doping via ion implantation to achieve gradient doping and [...] Read more.
Scandium (Sc)-doped aluminum nitride (AlN) thin films are critical for high-frequency, high-power surface acoustic wave (SAW) devices. A composite Sc doping strategy for AlN thin films is proposed, which combines magnetron sputtering pre-doping with post-doping via ion implantation to achieve gradient doping and tailor microstructural characteristics. The crystal structure, surface composition, and microstructural defects of the films were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray spectroscopy (EDS) and transmission electron microscopy (TEM). Results indicate that the Sc content in pre-doped ScAlN films was optimized from below 10 at.% to above 30 at.%, while the films maintained a stable (002) preferred orientation. XPS analysis confirmed the formation of Sc-N bonds, and EDS mapping revealed a gradient distribution of Sc within the subsurface region, extending to a depth of approximately 200 nm. High-resolution TEM revealed localized lattice distortions and surface amorphization induced by ion implantation. This work demonstrates the feasibility of ion implantation as a supplementary doping technique, offering theoretical insights for developing AlN films with high Sc doping concentrations and structural stability. These findings hold significant potential for optimizing the performance of high-frequency, high-power SAW devices. Full article
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