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Coatings
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Advances in Ceramic Coatings
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Advances in Ceramic Coatings

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 (31 December 2021) | Viewed by 7262

Special Issue Editor

Dr. Takumi Chikada

E-Mail Website
Guest Editor
College of Science, Academic Institute, Shizuoka University, 836 Ohya Suruga-ku, Shizuoka 422-8529, Japan
Interests: functional coating; hydrogen permeation; corrosion; irradiation

Special Issue Information

Dear Colleagues,

We would like to invite you to submit your work to this Special Issue on "Advances in Ceramic Coatings". Ceramic coatings cover a wide variety of research fields: electronics, catalytic chemistry, energy engineering, tribology, foundry, etc. Ceramic coatings are able to add desirable functions or modify properties without changing the base materials thanks to their unique capabilities. They are attracting increased attention because thin films show significantly different characteristics from bulk material. Fabrication methods and combinations of materials are also important factors that determine the quality of coatings. The aim of this Special Issue is to highlight some of the most recent and most significant contributions to the ceramic coatings field, through a combination of original research papers and review articles from leading groups around the world.

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

  • Ceramic coatings for severe environmental conditions
  • Ceramic coatings for corrosion protection
  • Ceramic coatings for nuclear applications
  • Ceramic coatings as hydrogen permeation barriers
  • Novel techniques of ceramic coating fabrication

Dr. Takumi Chikada
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 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.

Published Papers (3 papers)

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Research

16 pages, 24490 KiB  
Article
Thermal Conductivity of Multi-Sized Porous Thermal Barrier Coatings at Micro and Nano Scales after Long-Term Service at High Temperatures
by Pei-Hu Gao, Sheng-Cong Zeng, Can Jin, Bo Zhang, Bai-Yang Chen, Zhong Yang, Yong-Chun Guo, Min-Xian Liang, Jian-Ping Li, Quan-Ping Li, Yong-Qing Lu, Lu Jia and Dan Zhao
Coatings 2021, 11(10), 1183; https://doi.org/10.3390/coatings11101183 - 29 Sep 2021
Cited by 5 | Viewed by 2033
Abstract
Thermal barrier coatings with multi-sized porous structure at micro and nano scales were prepared with hollow spherical YSZ powders and polypropylene powders through atmospheric plasma spraying. The thermal conductivities of the multi-sized thermal barrier coatings after a long-term serving at high temperature were [...] Read more.
Thermal barrier coatings with multi-sized porous structure at micro and nano scales were prepared with hollow spherical YSZ powders and polypropylene powders through atmospheric plasma spraying. The thermal conductivities of the multi-sized thermal barrier coatings after a long-term serving at high temperature were tested through laser flash heating method. Meanwhile, the physical models of thermal barrier coatings with multi-sized porous structure at micro and nano scales were constructed through Ansys Workbench. The evolutions of thermal conductivity of thermal barrier coatings with multi-sized pores after long-term service at 1100 °C were investigated through computation. It was found that the thermal conductivity of the coating increased with the extension of the serving time. When the serving time reached 60 days, the thermal conductivity of the coating tended to be stable and close to the compacted bulk. The computational results were consistent with the tested ones, which could be helpful to explain the thermal conducting evolution in thermal barrier coatings with multi-sized porous structure at nano and micro scales after long-term serving at high temperature. Full article
(This article belongs to the Special Issue Advances in Ceramic Coatings)
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17 pages, 6134 KiB  
Article
Surface Optimization of ZrC–SiC Inner Layer to Enhance Ablation Property of SiC/ZrC–SiC Multi-Layer Coating for C/C Composites
by Anhong Shi, Xin Yang, Cunqian Fang, Yuanqi Weng, Xiao Luo, Ze Zhang and Qizhong Huang
Coatings 2021, 11(4), 378; https://doi.org/10.3390/coatings11040378 - 25 Mar 2021
Cited by 5 | Viewed by 2061
Abstract
A ZrC–SiC inner layer was fabricated on carbon/carbon composites by pack cementation at different temperatures, aiming to prepare a transition layer for subsequent deposition of SiC and ZrC–SiC layer by chemical vapor deposition and plasma spray. Results show that the structure and phase [...] Read more.
A ZrC–SiC inner layer was fabricated on carbon/carbon composites by pack cementation at different temperatures, aiming to prepare a transition layer for subsequent deposition of SiC and ZrC–SiC layer by chemical vapor deposition and plasma spray. Results show that the structure and phase composition of the inner layer significantly affected the interface bonding strength and thermal shock resistance of the multilayer, which played a vital role in resisting ablation. The jagged and porous surface of the inner layer led to forming a root-like pinning interface, generating a sawtooth combination between the layers. Moreover, the inner layer with high SiC content decreased the coefficient of thermal expansion mismatch between the inner and outer layers. Therefore, the enhanced ablation resistance of the optimum coating was attributed to the improved interface bonding strength and thermal shock resistance caused by the ZrC–SiC inner layer with rough and porous surface structure. Full article
(This article belongs to the Special Issue Advances in Ceramic Coatings)
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18 pages, 1847 KiB  
Article
Characterisation Method of the Passivation Mechanisms during the pre-discharge Stage of Plasma Electrolytic Oxidation Indicating the Mode of Action of Fluorides in PEO of Magnesium
by Frank Simchen, Maximilian Sieber, Thomas Mehner and Thomas Lampke
Coatings 2020, 10(10), 965; https://doi.org/10.3390/coatings10100965 - 10 Oct 2020
Cited by 9 | Viewed by 2244
Abstract
Plasma electrolytic oxidation (PEO) is a method to obtain protective coatings on metallic light-weight construction materials. Here, the workpiece receives a strong anodic polarisation in a suitable aqueous electrolyte, which leads to the formation of a passive layer and a gaseous shell. Afterwards, [...] Read more.
Plasma electrolytic oxidation (PEO) is a method to obtain protective coatings on metallic light-weight construction materials. Here, the workpiece receives a strong anodic polarisation in a suitable aqueous electrolyte, which leads to the formation of a passive layer and a gaseous shell. Afterwards, plasma electrolytic discharges appear on the substrate surface and convert it into a ceramic layer. The properties of the passive layer are influenced by the selected substrate/electrolyte combination and are essential for the PEO process-initiation and characteristics. In this work, a new method for the systematic investigation of the substrate/electrolyte interactions during the pre-discharge stage is presented. The procedure is carried out by a polarisation experiment and allows for a quantitative characterisation of the passivation behavior, based on a small electrolyte volume. The method is used to investigate a literature-known electrical conduction mechanism on passive films formed on magnesium, by cross-comparison between different Mg and Al materials. In addition, the influence of phosphate, glycerol, and fluoride on the passivation behaviour of the Mg alloy AZ31 in an alkaline environment is considered and quantified. The results provide an explanatory approach for the positive influence of toxic fluorides within the electrolyte on the morphology of PEO layers on magnesium. Full article
(This article belongs to the Special Issue Advances in Ceramic Coatings)
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