Special Issue "Recent Advances in Metal, Ceramic, and Metal-Ceramic Composite Films/Coatings"

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

Deadline for manuscript submissions: 31 December 2020.

Special Issue Editor

Dr. Małgorzata Norek
E-Mail Website
Guest Editor
Department of Advanced Materials and Technologies, Military University of Technology, 2 Kaliskiego Str., 00-908 Warsaw, Poland
Interests: material characterization; thin films; nanotechnology; coating technology; surface analysis; thin films synthesis; nanostructured materials; surface characterization; surface engineering; mesoporous materials; anodization; nanoporous alumina (AAO) template; luminescent materials; optical properties; photophysics; plasmonics

Special Issue Information

Dear Colleagues,

The application of various metal, ceramic, or metal–ceramic composite coatings is currently considered as the one of the most effective methods to tailor surface properties of materials to specific requirements for conventional and advanced technological applications. The well-defined surface properties induced by various coating layers can change mechanical (e.g., hardness, fatigue limit, elongation, tensile strength), thermal (e.g., thermal conductivity, expansion), electrical, and many other functional properties of materials (corrosion resistance, hydrophobicity or super-hydrophobicity, wettability, optical properties, etc.) without the necessity of using expensive and time-consuming heat treatments or alloying techniques. Metal coatings are successfully used in photovoltaics, optical, energy conversion, and sensing devices. Ceramic coatings create a barrier on the substrate that separates the material from the corrosive environment, thus enhancing its corrosion resistance. Additionally, the coatings provide better abrasion resistance that makes them extremely robust and ensures a longer life for the coated surface. Moreover, the coatings can modify surface texture for specific needs, enhance wettability/hydrophobicity, provide better wear resistance and thermal/electrical insulation, and improve surface hardness of a given material. Application of various coatings is, therefore, an efficient and affordable method to obtain the desired surface and material properties for a broad range of applications.

In particular, the topics of interest include but are not limited to:

  • The effect of thin coatings on mechanical properties of bulk materials;
  • New directions in design and production of hard coatings;
  • Thermal barrier coating (TBC) to prevent heat loss;
  • Smart and self-healing coatings for corrosion protection;
  • Super-hydrophobic and self-cleaning coatings;
  • High refractive index (HRI) coatings;
  • Plasmonic and antireflecting coatings;
  • Single and multilayer films;
  • Coating methods and technologies.

Dr. Małgorzata Norek
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 papers will be 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. 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 1600 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

  • metal thin films
  • metal-ceramic composite
  • functional coatings
  • multilayers

Published Papers (3 papers)

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Research

Open AccessArticle
Improvement in Tribological Properties of Cr12MoV Cold Work Die Steel by HVOF Sprayed WC-CoCr Cermet Coatings
Coatings 2019, 9(12), 825; https://doi.org/10.3390/coatings9120825 - 04 Dec 2019
Abstract
The main objective of this study was to develop an efficient coating to increase the wear resistance of cold work die steel at different temperatures. The microstructures of high-velocity oxygen-fuel (HVOF)-sprayed WC-CoCr coatings were evaluated using scanning electron microscopy (SEM) and transmission electron [...] Read more.
The main objective of this study was to develop an efficient coating to increase the wear resistance of cold work die steel at different temperatures. The microstructures of high-velocity oxygen-fuel (HVOF)-sprayed WC-CoCr coatings were evaluated using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The effect of temperature on the tribological properties of the coatings and the reference Cr12MoV cold work die steel were both investigated by SEM, environmental scanning electron microscopy (ESEM), X-ray diffraction (XRD), and a pin-on-disk high-temperature tribometer. The coating exhibited a significantly lower wear rate and superior resistance against sliding wear as compared to the die steel at each test temperature, whereas no major differences in terms of the variation tendency of the friction coefficient as a function of temperature were observed in both the coatings and the die steels. These can be attributed to the presence of nanocrystalline grains and the fcc-Co phase in the coating. Moreover, the wear mechanisms of the coatings and the die steels were compared and discussed. The coating presented herein provided a competitive approach to improve the sliding wear performance of cold work die steel. Full article
Open AccessFeature PaperArticle
Ce3+/Eu2+ Doped Al2O3 Coatings Formed by Plasma Electrolytic Oxidation of Aluminum: Photoluminescence Enhancement by Ce3+→Eu2+ Energy Transfer
Coatings 2019, 9(12), 819; https://doi.org/10.3390/coatings9120819 - 03 Dec 2019
Abstract
Plasma electrolytic oxidation (PEO) of aluminum in electrolytes containing CeO2 and Eu2O3 powders in various concentrations was used for creating Al2O3 coatings doped with Ce3+ and Eu2+ ions. Phase and chemical composition, surface morphology, [...] Read more.
Plasma electrolytic oxidation (PEO) of aluminum in electrolytes containing CeO2 and Eu2O3 powders in various concentrations was used for creating Al2O3 coatings doped with Ce3+ and Eu2+ ions. Phase and chemical composition, surface morphology, photoluminescence (PL) properties and energy transfer from Ce3+ to Eu2+ were investigated. When excited by middle ultraviolet radiation, Al2O3:Ce3+/Eu2+ coatings exhibited intense and broad emission PL bands in the ultraviolet/visible spectral range, attributed to the characteristic electric dipole 4f05d1→4f1 transition of Ce3+ (centered at about 345 nm) and 4f65d1→4f7 transition of Eu2+ (centered at about 405 and 500 nm). Due to the overlap between the PL emission of Al2O3:Ce3+ and the PL excitation of Al2O3:Eu2+, energy transfer from Ce3+ sensitizer to the Eu2+ activator occurs. The energy transfer is identified as an electric dipole–dipole interaction. The critical distance between Eu2+ and Ce3+ ions in Al2O3 was estimated to be 8.6 Å by the spectral overlap method. Full article
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Open AccessArticle
Study on Corrosion Resistance and Wear Resistance of Zn–Al–Mg/ZnO Composite Coating Prepared by Cold Spraying
Coatings 2019, 9(8), 505; https://doi.org/10.3390/coatings9080505 - 09 Aug 2019
Abstract
Two composite coatings, Zn65Al15Mg5ZnO15 and Zn45Al35Mg5ZnO15, were prepared by the cold spray technique and were found to be compact, with no pits or cracks, based on scanning electron [...] Read more.
Two composite coatings, Zn65Al15Mg5ZnO15 and Zn45Al35Mg5ZnO15, were prepared by the cold spray technique and were found to be compact, with no pits or cracks, based on scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS) investigations. The results of the neutral salt spray (NSS) and electrochemical tests showed that the two composite coatings possess a suitable corrosion performance. However, the Zn45Al35Mg5ZnO15 composite coatings were more corrosion resistant and allowed a better long-term stability. In addition, they were found to exhibit the best wear resistance and photocatalytic degradation efficiency. Full article
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

1. Title: Ce3+/Eu2+ Doped Al2O3 Coatings Formed by Plasma Electrolytic Oxidation of Aluminum: Photoluminescence Enhancement by Ce3+®Eu2+ Energy Transfer
Authors:  Stevan Stojadinović and Aleksandar Ćirić

2. Title: The Growth, Morphological and Electrical Properties of Niobium-Oxide Nanoembryos via the Anodizing of the Al/Nb Metal Layers
Authors: Andrei Pligovka, Marco Salerno and Małgorzata Norek
Email: [email protected]

3.  Title:  Antireflective Properties of Porous Anodic Alumina Coated with ZnS Thin Films
Authors: Maksymilian Włodarski, Matti Putkonen and Małgorzata Norek*
Email: [email protected]

 

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