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Functionalized Ceramics and Their Composites: Preparation, Properties and Applications
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Functionalized Ceramics and Their Composites: Preparation, Properties and Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced and Functional Ceramics and Glasses".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 4418

Special Issue Editors

Dr. Ranran Su

E-Mail Website
Guest Editor
School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: refractory alloys; advanced ceramics; coating; corrosion
Dr. Hongliang Zhang

E-Mail Website
Guest Editor
Institute of Modern Physics, Fudan University, Shanghai 200433, China
Interests: advanced ceramics; nuclear materials; fusion materials; ion beam analysis

Special Issue Information

Dear Colleagues,

Ceramics encompass a diverse group of hard, brittle, and resilient materials known for their high heat and corrosion resistance. Today, ceramics span a wide spectrum, including everyday items, industrial products, and construction materials. They also play a pivotal role in cutting-edge functional fields. The diverse range of properties exhibited by functionalized ceramics showcases their versatility across various industries, from power generation, aerospace, and electronics to biomedical, biotechnological and environmental applications.

This Special Issue will focus on the intricate processes involved in tailoring ceramics and their composites, including interface engineering, surface processing, composition tailoring, etc., to meet specialized functional applications. The methods of preparation, uncovering novel approaches and breakthroughs in the field are encouraged. Moreover, this Special Issue highlights real-world applications, from cutting-edge electronics to aerospace components, underlining the profound impact of functionalized ceramics on modern technology and industry.

This Special Issue will serve as an invaluable resource for researchers, engineers, and professionals seeking insights into the synthesis, characterization, and utilization of functionalized ceramics and their composites for pioneering advancements in materials science.

You are cordially invited to submit manuscripts for this Special Issue. Full articles, communications, and reviews are welcome.

Dr. Ranran Su
Dr. Hongliang Zhang
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. Materials is an international peer-reviewed open access semimonthly 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.

Keywords

  • functionalized ceramics
  • composites
  • processing
  • composition tailoring

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Published Papers (4 papers)

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Research

19 pages, 31778 KiB  
Article
Effect of Microsize and Nanosize TiO2 on Porous Mullite-Alumina Ceramic Prepared by Slip Casting
by Ludmila Mahnicka-Goremikina, Maris Rundans, Vadims Goremikins, Ruta Svinka, Visvaldis Svinka, Liga Orlova and Inna Juhnevica
Materials 2024, 17(24), 6171; https://doi.org/10.3390/ma17246171 - 17 Dec 2024
Viewed by 338
Abstract
Sintered porous mullite-alumina ceramics are obtained from the concentrated suspension of powdered raw materials such as kaolin, gamma and alpha Al2O3, and amorphous SiO2, mainly by a solid-state reaction with the presence of a liquid phase. The [...] Read more.
Sintered porous mullite-alumina ceramics are obtained from the concentrated suspension of powdered raw materials such as kaolin, gamma and alpha Al2O3, and amorphous SiO2, mainly by a solid-state reaction with the presence of a liquid phase. The modification of mullite ceramic is achieved by the use of micro- and nanosize TiO2 powders. The phase compositions were measured using an X-ray powder diffraction (XRD) Rigaku Ultima+ (Tokyo, Japan) and microstructures of the sintered specimens were analysed using scanning electron microscopy (SEM) Hitachi TM3000-TableTop (Tokyo, Japan). The shrinkage, bulk density, apparent porosity, and water uptake of the specimens was determined after firing using Archimedes’ principle. The apparent porosity of the modified mullite ceramic is 52–69 ± 1%, water uptake is 33–40 ± 1%, pore size distributions are 0.05–0.8 μm, 0.8–10 μm and 10–1000 μm, and bulk density are variated from 1.15 ± 0.05 to 1.4 ± 0.05 g/cm3. The microsize TiO2 and nanosize TiO2 speed up the mullitisation process and allow the decrease in the quantity used as raw material amorphous SiO2, which was the purpose of the study. The use of nanosize TiO2 additive increases the porosity of such a ceramic, decreasing the bulk density and linear thermal expansion. Full article
(This article belongs to the Special Issue Functionalized Ceramics and Their Composites: Preparation, Properties and Applications)
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15 pages, 5136 KiB  
Article
Structural Refinement and Optoelectrical Properties of Nd2Ru2O7 and Gd2Ru2O7 Pyrochlore Oxides for Photovoltaic Applications
by Assohoun Fulgence Kraidy, Abé Simon Yapi, Mimoun El Marssi, Arbelio Penton Madrigal and Yaovi Gagou
Materials 2024, 17(11), 2571; https://doi.org/10.3390/ma17112571 - 27 May 2024
Cited by 2 | Viewed by 1045
Abstract
High-performance photovoltaic devices require active photoanodes with superior optoelectric properties. In this study, we synthesized neodymium ruthenate, Nd2Ru2O7 (NRO), and gadolinium ruthenate pyrochlore oxides, Gd2Ru2O7 (GRO), via the solid-state reaction technique, showcasing their [...] Read more.
High-performance photovoltaic devices require active photoanodes with superior optoelectric properties. In this study, we synthesized neodymium ruthenate, Nd2Ru2O7 (NRO), and gadolinium ruthenate pyrochlore oxides, Gd2Ru2O7 (GRO), via the solid-state reaction technique, showcasing their potential as promising candidates for photoanode absorbers to enhance the efficiency of dye-sensitized solar cells. A structural analysis revealed predominantly cubic symmetry phases for both materials within the Fd-3m space group, along with residual orthorhombic symmetry phases (Nd3RuO7 and Gd3RuO7, respectively) refined in the Pnma space group. Raman spectroscopy further confirmed these phases, identifying distinct active modes of vibration in the predominant pyrochlore oxides. Additionally, a scanning electron microscopy (SEM) analysis coupled with energy-dispersive X-ray spectroscopy (EDX) elucidated the morphology and chemical composition of the compounds. The average grain size was determined to be approximately 0.5 µm for GRO and 1 µm for NRO. Electrical characterization via I-V measurements revealed that these pyrochlore oxides exhibit n-type semiconductor behavior, with conductivity estimated at 1.5 (Ohm·cm)−1 for GRO and 4.5 (Ohm·cm)−1 for NRO. Collectively, these findings position these metallic oxides as promising absorber materials for solar panels. Full article
(This article belongs to the Special Issue Functionalized Ceramics and Their Composites: Preparation, Properties and Applications)
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19 pages, 32716 KiB  
Article
Magnetoelectric Properties of Multiferroic Composites Based on BaTiO3 and Nickel-Zinc Ferrite Material
by Dariusz Bochenek, Przemysław Niemiec, Dagmara Brzezińska, Grzegorz Dercz, Grzegorz Ziółkowski, Elżbieta Jartych, Jakub Grotel and Jan Suchanicz
Materials 2024, 17(8), 1905; https://doi.org/10.3390/ma17081905 - 19 Apr 2024
Cited by 1 | Viewed by 1234
Abstract
The purpose of the present study was to learn the morphological, structural, ferroelectric, dielectric, electromechanical, magnetoelectric, and magnetic properties, and DC conductivity of BaTiO3-Ni0.64Zn0.36Fe2O4 (BT-F) multiferroic composites compacted via the free sintering method. The [...] Read more.
The purpose of the present study was to learn the morphological, structural, ferroelectric, dielectric, electromechanical, magnetoelectric, and magnetic properties, and DC conductivity of BaTiO3-Ni0.64Zn0.36Fe2O4 (BT-F) multiferroic composites compacted via the free sintering method. The influence of the ferrite content in ceramic composite materials on the functional properties is investigated and discussed. X-ray diffraction studies confirmed the presence of two main phases of the composite, with strong reflections originating from BaTiO3 and weak peaks originating from nickel-zinc ferrite. BT-F ceramic composites have been shown to exhibit multiferroism at room temperature. All studied compositions have high permittivity values and low dielectric loss, while the ferroelectric properties of the BT component are maintained at a high level. On the other hand, magnetic properties depend on the amount of the ferrite phase and are the strongest for the composition with 15 wt.% of F (magnetization at RT is 4.12 emu/g). The magnetoelectric coupling between BT and F phases confirmed by the lock-in technique is the largest for 15 wt.% ferrite. In the present work, the process conditions of the free sintering method for obtaining BT-F multiferroic composite with good electrical and magnetic properties (in one material) were optimized. An improved set of multifunctional properties allows the expansion of the possibilities of using multiferroic composites in microelectronics. Full article
(This article belongs to the Special Issue Functionalized Ceramics and Their Composites: Preparation, Properties and Applications)
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19 pages, 6897 KiB  
Article
On the Lanthanide Effect on Functional Properties of 0.94Na0.5Bi0.5TiO3-0.06BaTiO3 Ceramic
by Jacem Zidani, Ilham Hamdi Alaoui, Moneim Zannen, Eriks Birks, Zakaria Chchiyai, Mustapha Majdoub, Bouchaib Manoun, Mimoun El Marssi and Abdelilah Lahmar
Materials 2024, 17(8), 1783; https://doi.org/10.3390/ma17081783 - 12 Apr 2024
Cited by 3 | Viewed by 1319
Abstract
The beneficial effects of lanthanide incorporation into 0.94Na0.5Bi0.5TiO3-0.06BaTiO3 (BNT-BT) matrix on its functional properties were investigated. The conventional solid-state method was used for synthesizing samples. The structural refinement revealed that all samples crystallized in R3c rhombohedral [...] Read more.
The beneficial effects of lanthanide incorporation into 0.94Na0.5Bi0.5TiO3-0.06BaTiO3 (BNT-BT) matrix on its functional properties were investigated. The conventional solid-state method was used for synthesizing samples. The structural refinement revealed that all samples crystallized in R3c rhombohedral symmetry. Raman spectroscopy study was carried out using green laser excitation and revealed that no clear perceptible variation in frequency is observed. Dielectric measurements unveiled that the introduction of rare earth obstructed the depolarization temperature promoted in BNT-BT, the diffusive phase transition decreasing with increasing lanthanide size. Only dysprosium addition showed comparable diffusion constant and dielectric behavior as the unmodified composition. Further, the comparison of the obtained ferroelectric hysteresis and strain-electric field loops revealed that only Dy-phase exhibited interesting properties comparing parent composition. In addition, the incorporation of lanthanides Ln3+ into the BNT-BT matrix led to the development of luminescence characteristics in the visible and near infrared regions, depending on the excitation wavelengths. The simultaneous occurrence of photoluminescence and ferroelectric/piezoelectric properties opens up possibilities for BNT-BT-Ln to exhibit multifunctionality in a wide range of applications. Full article
(This article belongs to the Special Issue Functionalized Ceramics and Their Composites: Preparation, Properties and Applications)
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