Special Issue "Innovative Thermal Spray Applications in Energy, Environment and Medical Sectors"

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Surface Characterization, Deposition and Modification".

Deadline for manuscript submissions: closed (31 August 2021).

Special Issue Editor

Dr. Michalis K. Vardavoulias
E-Mail Website
Guest Editor
PyroGenesis S.A., Greece, Technological Park of Lavrio, 19500 Lavrio, Greece
Interests: Thermal Spray; Surface Modification; Advanced Materials

Special Issue Information

Dear Colleagues,

We would like to invite you to contribute your technological insight and research to our Special Issue on Innovative Thermal Spray Applications in Energy, Environment and Medical Sectors. Thermal spraying is a well-established technology with a wide range of applications of functional interest. These applications are based mainly on coatings, but also on free-standing structures (layers). Thermal spray technologies, including cold spray, are being adopted in increasingly sensitive and demanding research fields with a range of technological approaches, such as the medical, energy and environmental sectors (e.g., implant coatings, batteries, PV, wind turbines, fuel cells, catalytic coatings). Thus, consistent effort should be directed towards the development of new thermal spray materials besides those currently being used, progress in existing TS technologies or the development of new ones and the introduction of thermal spray technologies in new sectors in order to meet emerging needs. The customization of old thermal spray methods with new materials and vice versa, or new thermal spray techniques combined with advanced raw materials, is the focus of this Special Issue. Both pioneering research papers and detailed reviews on materials/coatings for old and current applications will be considered.

The Special Issue will focus preferably, but not exclusively, on TS applications for the following sectors:

Energy (e.g., batteries, Si coatings for PV, PV tandem structures, fuel/electrolysis cell multilayer structures, wind turbine blade coatings);

Environment (e.g., catalytic coatings, porous layers for filter applications);

Medical applications (e.g., new TS implant coatings other than conventional hydroxylapatite and porous titanium);

Thermal spray coatings with polymer and composite materials.

Dr. Michalis K. Vardavoulias
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 1800 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

  • Thermal spray
  • Cold spray
  • Coatings
  • Free standing layers
  • Energy
  • Environment
  • Medical implant

Published Papers (1 paper)

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Research

Article
Thermal Spray Multilayer Ceramic Structures with Potential for Solid Oxide Cell Applications
Coatings 2021, 11(6), 682; https://doi.org/10.3390/coatings11060682 - 05 Jun 2021
Viewed by 643
Abstract
The objective of this paper is to manufacture free-standing solid oxide cells (SOCs) through the atmospheric plasma spray process (APS), without the aid of a metallic support nor the need for a post-process heating treatment. A five-layered cell was fabricated. Fused and crushed [...] Read more.
The objective of this paper is to manufacture free-standing solid oxide cells (SOCs) through the atmospheric plasma spray process (APS), without the aid of a metallic support nor the need for a post-process heating treatment. A five-layered cell was fabricated. Fused and crushed yttria-stabilized zirconia (YSZ) powder in the 5–22 μm particle size range was used in order to achieve a dense electrolyte layer, yet still permitting satisfactory ionic diffusivity. Nickel oxide (NiO) powder that was obtained by in-house flame spray (FS) oxidation of pure nickel (Ni) powder was mixed and sprayed with the original Ni-YSZ feedstock, so as to increase the porosity content in the supporting electrode. Two transition layers were sprayed, the first between the support electrode and the electrolyte (25% (Ni/NiO)–75% YSZ) and the second at the electrolyte and the end electrode interface (50% YSZ–50% lanthanum strontium manganite (LSM)). The purpose of intercalation of these transition layers was to facilitate the ionic motion and also to eliminate thermal expansion mismatches. All the as-sprayed layers were separately tested by an in-house developed acetone permeability comparative test (APCT). Electrodes with adequate porosity (25–30%) were obtained. Concerning electrolytes, relatively thick (150–200 µm) layers derived from fused and crushed YSZ were found to be impermeable to acetone, while thinner YSZ counterparts of less than 100 µm showed a low degree of permeability, which was attributed mostly to existent microcracks and insufficient interparticle cohesion, rather than to interconnected porosity. Full article
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