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Coatings
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Functional Ceramic Coatings II
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Functional Ceramic Coatings II

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Ceramic Coatings and Engineering Technology".

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 3574

Special Issue Editors

Dr. Bozena Pietrzyk

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Guest Editor
Institute of Materials Science and Engineering, Lodz University of Technology, Stefanowskiego 1/15, 90-924 Lodz, Poland
Interests: materials science; surface engineering; coatings; ceramics; biomaterials; composite coatings; photocatalytic coatings; nanomaterials; protective coatings; deposition methods; sol-gel
Special Issues, Collections and Topics in MDPI journals
Dr. Sebastian Miszczak

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Guest Editor
Institute of Materials Science and Engineering, Lodz University of Technology, Stefanowskiego 1/15, 90-924 Lodz, Poland
Interests: thin films; coatings; sol-gel; ceramics; materials engineering; materials characterization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The properties of materials result, not only from structure and physico-chemical characteristics, but also from the properties of their surfaces. One of the ways of modifying material surface properties is by using deposition of coatings. Coatings can significantly change functionalities and applications of substrate materials.

Ceramics are an important group of coating materials with a wide range of controllable properties, such as electrical conductivity, photocatalytic and catalytic behavior, hardness, biocompatibility, surface energy, corrosion resistance, etc. Ceramic coatings contribute to the development of useful functionalities of materials, which are key factors for the advancement of science and technology.

Understanding of the relationship between the structure and the properties of ceramic coatings and thin films is essential for further development of new applications of materials. An adjustment in structure and morphology of a coating or thin film, in order to modify its properties, can be used to add new functionalities and improved behavior of materials and devices.

The scope of the Special Issue “Functional Ceramic Coatings” is the presentation of innovative methods in fabrication, characterization and properties of ceramic coatings and thin films with an emphasis on influence of structure and morphology on their properties and potential applications.

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

- New deposition processes including: liquid-based deposition, magnetron sputtering, PVD, CVD and their derivatives (such as PECVD, ALD, PLD, etc.), as well as hybrid methods.

- Ceramic coatings and thin films for functional application such as optical, electrical, tribological, catalytical/photocatalytical, magnetic, antibacterial, biomedical, protective, etc.

- Characterization methods to determine the properties of ceramic coatings and thin films

- New trends in ceramic coatings and films

Dr. Bozena Pietrzyk
Dr. Sebastian Miszczak
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. 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.

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Published Papers (2 papers)

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Research

15 pages, 5548 KiB  
Article
Morphology and Structure of Al2O3 + Graphene Low-Friction Composite Coatings
by Sebastian Miszczak and Bożena Pietrzyk
Coatings 2022, 12(8), 1153; https://doi.org/10.3390/coatings12081153 - 10 Aug 2022
Viewed by 1356
Abstract
Recently, graphene and its derivatives have been of particular interest as a solid lubricant to reduce friction. The aim of this study was to investigate the morphology and structure of low-friction Al2O3 coatings containing reduced graphene oxide (rGO). Using two [...] Read more.
Recently, graphene and its derivatives have been of particular interest as a solid lubricant to reduce friction. The aim of this study was to investigate the morphology and structure of low-friction Al2O3 coatings containing reduced graphene oxide (rGO). Using two types of rGO, alumina coatings were produced by the sol–gel dip-coating method and characterized in terms of morphology and structure using SEM and AFM microscopy and Raman spectroscopy. It was found that composite Al2O3 + rGO coatings had diversified morphology depending on the type of graphene used. The dip-coating method used for deposition had a large impact on the morphology and contributed to the orderly arrangement of rGO nanoplates in the coating matrices. It was also shown that there is a correlation between the shape and spatial orientation of nanoplates and the tribological properties of coatings. The structural studies showed differences in the number of graphene defects in the coatings, which may indicate the chemical bonding of graphene with the alumina matrices. These differences may also be responsible for divergences in the tribological properties of the coatings depending on the type of graphene. All our findings indicate the key role of an appropriate balance between the parameters of composite coating production in terms of the desired tribological properties. Full article
(This article belongs to the Special Issue Functional Ceramic Coatings II)
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9 pages, 4520 KiB  
Article
Electrostatic Charges of Abrasive Powders: The Role of Particle Size and Humidity
by Alexander Tkach, Miguel Garcez and Paula M. Vilarinho
Coatings 2021, 11(12), 1520; https://doi.org/10.3390/coatings11121520 - 10 Dec 2021
Viewed by 2503
Abstract
Electrostatically coated abrasives have drawn vast attention in many industrial applications. Therefore, influence of humidity on the electrical properties of α-SiC and α-Al2O3 abrasive powders with three μm-range particle sizes are here investigated using electrostatic charge and DC resistivity analysis. [...] Read more.
Electrostatically coated abrasives have drawn vast attention in many industrial applications. Therefore, influence of humidity on the electrical properties of α-SiC and α-Al2O3 abrasive powders with three μm-range particle sizes are here investigated using electrostatic charge and DC resistivity analysis. From the three particle size ranges used, 15–16 μm, 60–63 μm and 153–156 μm, the intermediate one (60–63 μm) is found to be associated with the highest charge values, measured using a double Faraday cup method, as well as the highest resistivity for both materials. However, comparing SiC and Al2O3 powders, the latter ones present about twice larger charges in dry and normal humidity states accompanied by several orders of magnitude larger resistivity. Under humid conditions all the powders reveal diminishing charge and resistivity values. Full article
(This article belongs to the Special Issue Functional Ceramic Coatings II)
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