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Preparation and Application of Multifunctional Ceramic Materials
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Preparation and Application of Multifunctional Ceramic Materials

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

Deadline for manuscript submissions: 5 August 2024 | Viewed by 10772

Special Issue Editor

Prof. Dr. Jiamao Li

E-Mail Website
Guest Editor
School of Material Science and Engineering, Anhui University of Technology, Maanshan, China
Interests: multifunctional ceramic materials

Special Issue Information

Dear Colleagues,

We are pleased to invite you to submit your work to this Special Issue, “Preparation and Application of Multifunctional Ceramic Materials”.

Electroceramics are the functional class of ceramics, wherein ceramic materials are designed to exhibit various electrical properties. Technologically, these ceramics have been explored for their piezoelectric, ferroelectric, dielectric responses, etc. and have made way for use in high-frequency dielectric devices, nonvolatile memories (DRAMs), and materials for energy storage and conversion. The search for electroceramics with a high performance has attracted an increasing amount of attention due to their potential applications in the microelectronic industry.

This Special Issue aims to discuss and present original research articles and review papers related to dielectrics containing dielectric, ferroelectric, piezoelectric, and magnetic materials. Contributions will focus on the understanding and applications of dielectrics in modern electronic devices and systems, which fill gaps in international scientific literature. In addition, ceramic nanopowders and thin/thick films that can be used as dielectrics are welcome.

For this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Microwave dielectric ceramics;
  • Ferroelectric materials and devices;
  • Piezoelectric materials and applications;
  • Magnetic materials and applications;
  • Thin/thick films and devices;
  • Nanoparticles

We look forward to receiving your contributions.

Prof. Dr. Jiamao Li
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 (5 papers)

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Research

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18 pages, 5636 KiB  
Article
Comparative Ablation Behaviors of 2D Needled C/SiC and C/SiC-ZrC Composites
by Hailang Ge, Lu Zhang, Fanjie Feng, Jinkang Du, Ting Huan, Xiguang Gao and Yingdong Song
Coatings 2024, 14(4), 480; https://doi.org/10.3390/coatings14040480 - 14 Apr 2024
Viewed by 522
Abstract
To investigate the effect of ZrC on the ablative properties of C/SiC composites in a high-temperature environment, the oxidative ablation of C/SiC and C/SiC-ZrC composites at high-temperatures was examined through ablation tests. In this study, two ceramic matrix composites, C/SiC and C/SiC-ZrC, were [...] Read more.
To investigate the effect of ZrC on the ablative properties of C/SiC composites in a high-temperature environment, the oxidative ablation of C/SiC and C/SiC-ZrC composites at high-temperatures was examined through ablation tests. In this study, two ceramic matrix composites, C/SiC and C/SiC-ZrC, were prepared by chemical vapor deposition and precursor impregnation pyrolysis. The ablation properties of the materials were tested and analyzed using an oxyacetylene flame to simulate a high-temperature environment. The results revealed that the line ablation rate of C/SiC-ZrC was 8.48% and 20.81% lower than that of C/SiC at 30 s and 60 s, respectively. At the same ablation time, the depth of the crater resulting from erosion of the C/SiC material by the high-temperature airflow was deeper than that of C/SiC-ZrC. The traces of the fibers subjected to erosion were more prominent. In a longitudinal comparison, the mass ablation rate of C/SiC-ZrC material decreased with the increase in time, while the line ablation rate initially increased rapidly and then decreased. From 30 s to 90 s of ablation, the line ablation rate and mass ablation rate decreased by 55.62% and 89.5%, respectively. The overall trend for both rates was a decrease with the increase in time. Under the same ablation time, the ablation rate of C/SiC-ZrC was generally lower than that of C/SiC. This is because the generated molten ZrO2 was more viscous and denser than SiO2, effectively blocking oxidizing gases from penetrating the interior of the material. The molten ZrO2 provided better protection for the substrate in the high-temperature environment. Full article
(This article belongs to the Special Issue Preparation and Application of Multifunctional Ceramic Materials)
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18 pages, 13184 KiB  
Article
Perovskite/Pyrochlore Composite Mineral-like Ceramic Fabrication for 90Sr/90Y Immobilization Using SPS-RS Technique
by Evgeniy K. Papynov, Oleg O. Shichalin, Anton A. Belov, Igor Yu. Buravlev, Alexey Zavjalov, S. A. Azon, Alexander N. Fedorets, Zlata E. Kornakova, Aleksey O. Lembikov, E. A. Gridasova, Andrei Ivanets and Ivan G. Tananaev
Coatings 2023, 13(12), 2027; https://doi.org/10.3390/coatings13122027 - 30 Nov 2023
Viewed by 827
Abstract
A novel solid-phase synthetic approach was developed to produce a mineral-like composite ceramic based on strontium titanate (SrTiO3) and yttrium titanate (Y2Ti2O7) matrices for immobilizing radionuclides such as 90Sr and its daughter product 90 [...] Read more.
A novel solid-phase synthetic approach was developed to produce a mineral-like composite ceramic based on strontium titanate (SrTiO3) and yttrium titanate (Y2Ti2O7) matrices for immobilizing radionuclides such as 90Sr and its daughter product 90Y, as well as lanthanides and actinides, via reactive spark plasma sintering technology (SPS-RS). Using XRD, SEM, and EDS analyses, the sintering kinetics of the initial mixed oxide reactants of composition YxSr1–1.5xTiO3 (x = 0.2, 0.4, 0.6 and 1) and structure-phase changes in the ceramics under SPS-RS conditions were investigated as a function of Y3+ content. In addition, a detailed study of phase transformation kinetics over time as a function of the heating temperature of the initial components (SrCO3, TiO2, and Y2O3) was conducted via in situ synchrotron XRD heating experiments. The composite ceramic achieved relatively high physicomechanical properties, including relative density between 4.92–4.64 g/cm3, Vickers microhardness of 500–800 HV, and compressive strength ranging from 95.5–272.4 MPa. An evaluation of hydrolytic stability and leaching rates of Sr2+ and Y3+ from the matrices was performed, demonstrating rates did not exceed 10−5–10−6 g·cm−2·day−1 in compliance with GOST R 50926-96 and ANSI/ANS 16.1 standards. The leaching mechanism of these components was studied, including the calculation of solution penetration depth in the ceramic bulk and ion diffusion coefficients in the solution. These findings show great promise for radioactive waste conditioning technologies and the manufacturing of radioisotope products. Full article
(This article belongs to the Special Issue Preparation and Application of Multifunctional Ceramic Materials)
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11 pages, 3954 KiB  
Article
Sintering Behavior, Microstructure and Microwave Dielectric Properties of Li2TiO3-Based Solid Solution Ceramics with Lithium Fluoride Addition for Low-Temperature Co-Fired Ceramic Applications
by Yunfeng Guo, Zexing Wang and Jiamao Li
Coatings 2023, 13(10), 1732; https://doi.org/10.3390/coatings13101732 - 4 Oct 2023
Cited by 1 | Viewed by 947
Abstract
Nowadays, low-temperature co-fired ceramic (LTCC) technology has become one of the main forms of manufacturing electronic devices. However, a majority of microwave dielectric ceramics are not suitable as LTCC materials due to their high sintering temperatures. Developing novel LTCC materials with good microwave [...] Read more.
Nowadays, low-temperature co-fired ceramic (LTCC) technology has become one of the main forms of manufacturing electronic devices. However, a majority of microwave dielectric ceramics are not suitable as LTCC materials due to their high sintering temperatures. Developing novel LTCC materials with good microwave dielectric properties is extremely urgent. In this paper, an LiF sintering aid was added to Li2Ti0.8(Co1/3Nb2/3)0.2O3 (LTCN) ceramics to explore new LTCC materials. The sintering behavior, microstructure and microwave dielectric properties of LTCN + x wt% LiF ceramics were investigated in detail. The results indicated that the addition of LiF increased the degree of disorder in the LTCN matrix, transforming it from a monoclinic to a cubic crystal system. The ceramics exhibited relatively dense and homogeneous microstructures at the sintering temperature of 950 °C as the LiF doping amount was not less than 2 wt%. By LiF doping, the quality factor (Q × f) value was significantly enhanced due to the improved microstructure. Meanwhile, the temperature coefficient of resonant frequency (τf) of LTCN ceramics was successfully regulated to the near zero value owing to the negative τf characteristic of LiF. Excellent microwave dielectric properties of dielectric constant (εr) = 19.01, Q × f = 144,890 GHz, τf = −1.52 ppm/°C were obtained when the sample doped 3 wt% LiF was sintered at 950 °C for 3 h. Furthermore, the good chemical compatibility of the LTCN-3 wt% LiF ceramic with silver electrodes suggested that the ceramic was a potential material for LTCC applications. Full article
(This article belongs to the Special Issue Preparation and Application of Multifunctional Ceramic Materials)
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11 pages, 4601 KiB  
Article
Formation and Antibacterial Activity of AlOOH/Ag Composite Coating on Macroporous α-Al2O3 Ceramics
by Elena I. Senkina, Ales S. Buyakov, Sergey O. Kazantsev, Olga V. Bakina, Maksim G. Krinitsyn and Aleksandr S. Lozhkomoev
Coatings 2022, 12(8), 1107; https://doi.org/10.3390/coatings12081107 - 3 Aug 2022
Cited by 2 | Viewed by 1272
Abstract
In this study, the modification of macroporous α-Al2O3 ceramics with AlOOH nanostructures impregnated with silver particles is carried out using bicomponent Al/Ag nanoparticles obtained by the simultaneous electrical explosion of Al and Ag wires. Nanoparticle suspension impregnation of porous ceramics [...] Read more.
In this study, the modification of macroporous α-Al2O3 ceramics with AlOOH nanostructures impregnated with silver particles is carried out using bicomponent Al/Ag nanoparticles obtained by the simultaneous electrical explosion of Al and Ag wires. Nanoparticle suspension impregnation of porous ceramics followed by oxidation with water is shown to lead to the formation of a continuous AlOOH nanosheet coating on the ceramic surface, with silver releasing on the surface of nanosheets in the form of individual particles sized 5–30 nm. Modified with AlOOH/Ag nanostructures, macroporous α-Al2O3 pellets with a diameter of 11 mm and a thickness of 5 mm show 100% efficiency for water purification from bacteria with a concentration of 105 CFU/mL for 7.5 min at a flow rate of 6.7 mL/min. Full article
(This article belongs to the Special Issue Preparation and Application of Multifunctional Ceramic Materials)
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Review

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14 pages, 1376 KiB  
Review
Dental Ceramics: Fabrication Methods and Aesthetic Characterization
by Jefferson David Melo de Matos, Guilherme Rocha Scalzer Lopes, Daher Antonio Queiroz, Leonardo Jiro Nomura Nakano, Nathália Carvalho Ramos Ribeiro, Adriano Baldotto Barbosa, Lilian Costa Anami and Marco Antonio Bottino
Coatings 2022, 12(8), 1228; https://doi.org/10.3390/coatings12081228 - 22 Aug 2022
Cited by 11 | Viewed by 6529
Abstract
This study aimed to describe different staining protocols for the main dental ceramics. A bibliographic search was conducted in the main health databases PubMed and Scholar Google, in which 100 studies published were collected. In vitro and in silico studies, case reports, and [...] Read more.
This study aimed to describe different staining protocols for the main dental ceramics. A bibliographic search was conducted in the main health databases PubMed and Scholar Google, in which 100 studies published were collected. In vitro and in silico studies, case reports, and systematic and literature reviews, on ceramic materials, were included. Therefore, articles that did not deal with the topic addressed were excluded. Ceramics can be classified into glass-matrix ceramics (etchable), polycrystalline (non-etchable), and hybrid ceramics. In this context, different fabrication methods, method indications, and characterization layers can be used for each ceramic group and numerous protocols differ according to the choice of material. Several ceramic systems are available, thus professionals in the prosthetic area need constant updates on dental ceramic restorations and their proper characterizations. Full article
(This article belongs to the Special Issue Preparation and Application of Multifunctional Ceramic Materials)
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