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Performance and Applications of Ceramic and Ceramic Composite Materials
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Performance and Applications of Ceramic and Ceramic Composite Materials

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: closed (10 December 2022) | Viewed by 6867

Special Issue Editor

Dr. Gurdial Blugan

E-Mail Website
Guest Editor
Empa - Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
Interests: ceramic composites; processing; microstructure engineering; mechanical characterization; joining

Special Issue Information

Dear Colleagues,

The microstructure of ceramic composites plays a critical role in their performance in a wide range of applications in key areas including health, energy, environment, advanced manufacturing, electronics, and engineering. Through careful design, ceramic composites can offer unique properties tailored by the addition of particles, fibers, nano-fillers, and macro design (e.g., laminates), which meet specific application requirements. The study and understanding of ceramic composites offer unique opportunities to advance their use in society.

This Special Issue will focus on recent work that focuses on advancing the performance of ceramic composites. Topics can include, but are not limited to the following:

  • Novel processing and effect on microstructures and properties.
  • Use of secondary phases or multiple phases to achieve unique performances.
  • Ceramic composites developed for challenging applications.

Dr. Gurdial Blugan
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. 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

  • Composites
  • Microstructure
  • Processing
  • Characterization
  • Applications

Published Papers (4 papers)

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Research

11 pages, 9884 KiB  
Article
Influence of Gas-Flow Conditions on the Evolution of Thermally Insulating Si3N4 Nano-Felts
by Balanand Santhosh, Mattia Biesuz, Andrea Zambotti and Gian Domenico Sorarù
Materials 2022, 15(3), 1068; https://0-doi-org.brum.beds.ac.uk/10.3390/ma15031068 - 29 Jan 2022
Cited by 1 | Viewed by 1838
Abstract
This paper discusses the role of nitrogen (N2) gas flow conditions on the formation of silicon nitride (Si3N4) nano-felts from polysiloxane-impregnated polyurethane (PU) foams. The polymeric foam was converted into an amorphous silicon oxycarbide (SiOC) artefact during [...] Read more.
This paper discusses the role of nitrogen (N2) gas flow conditions on the formation of silicon nitride (Si3N4) nano-felts from polysiloxane-impregnated polyurethane (PU) foams. The polymeric foam was converted into an amorphous silicon oxycarbide (SiOC) artefact during pyrolysis, which was then transformed, at a higher temperature, into a Si3N4 felt through a reaction between the decomposition products of SiOC with N2. The study identified that a N2 flux of ~2.60 cm.min−1 at the cross-section of the furnace (controlled to 100 cm3.min−1 at the inlet of the furnace using a flowmeter) substantially favored the transformation of the parent SiOC foam to Si3N4 felts. This process intensification step significantly reduced the wastage and the energy requirement while considering the material production on a bulk scale. The study also inferred that the cell sizes of the initial PU templates influenced the foam to felt transformation. Full article
(This article belongs to the Special Issue Performance and Applications of Ceramic and Ceramic Composite Materials)
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15 pages, 3644 KiB  
Article
Processing of Al2O3-AlN Ceramics and Their Structural, Mechanical, and Tribological Characterization
by Dheeraj Varanasi, Monika Furkó, Katalin Balázsi and Csaba Balázsi
Materials 2021, 14(20), 6055; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14206055 - 14 Oct 2021
Cited by 6 | Viewed by 2225
Abstract
The aim of this study is to present a novel, lower sintering temperature preparation, processing, structural, mechanical, and tribological testing of the AlN-Al2O3 ceramics. The precursor powder of AlN was subjected to oxidation in ambient environment at 900 °C for [...] Read more.
The aim of this study is to present a novel, lower sintering temperature preparation, processing, structural, mechanical, and tribological testing of the AlN-Al2O3 ceramics. The precursor powder of AlN was subjected to oxidation in ambient environment at 900 °C for 3, 10, and 20 h, respectively. These oxidized powders were characterized by SEM and XRD to reveal their morphology, phase, and crystal structure. The SEM results showed coarse powder particles and the presence of aluminum oxide (Al2O3) phase at the surface of aluminum nitride (AlN). The XRD analysis has shown increasing aluminum-oxy-nitride conversion of aluminum nitride as the holding time of oxidation increased. The highest percentage of conversion of AlN powder to AlN-Al2O3 was observed after 10 h. Simultaneously the powders were compacted and sintered using the hot isostatic pressing (HIP) under inert environment (N2 gas) at 1700 °C, 20 MPa for 5 h. This led to the compaction and increase in density of the final samples. Mechanical tests, such as bending test and tribology tests, were carried out on the samples. The mechanical properties of the samples were observed to improve in the oxidized samples compared to the precursor AlN. Moreover, applying longer oxidation time, the mechanical properties of the sintered samples enhanced significantly. Optimum qualitative (microstructure, oxide percentage) and quantitative (tribology, hardness, and bending tests) properties were observed in samples with 10-h oxidation time. Full article
(This article belongs to the Special Issue Performance and Applications of Ceramic and Ceramic Composite Materials)
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20 pages, 4128 KiB  
Article
Strength Analysis and Stress-Strain Deformation Behavior of 3 mol% Y-TZP and 21 wt.% Al2O3-3 mol% Y-TZP
by Liliya Vladislavova, Tomasz Smolorz, Nina Orlovskaya, Mykola Lugovy, Michael J. Reece, Stefan Kӧbel, Agnieszka Kopia, Malgorzata Makowska, Thomas Graule and Gurdial Blugan
Materials 2021, 14(14), 3903; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14143903 - 13 Jul 2021
Cited by 2 | Viewed by 1851
Abstract
The mechanical behavior of 3 mol% Y2O3-ZrO2 ceramic and 21 wt.% Al2O3-3 mol% Y2O3-ZrO2 ceramic composite with submicron grain size was studied. Mechanical properties, such as hardness, Young’s modulus, [...] Read more.
The mechanical behavior of 3 mol% Y2O3-ZrO2 ceramic and 21 wt.% Al2O3-3 mol% Y2O3-ZrO2 ceramic composite with submicron grain size was studied. Mechanical properties, such as hardness, Young’s modulus, four-point bending strength, and fracture toughness of both materials were measured. Linear stress-strain deformation behavior of both 3 mol% Y2O3-ZrO2 and 21 wt.% Al2O3-3 mol% Y2O3-ZrO2 was observed in flexure, both at room temperature and at 400 °C. A small deviation from linear elastic deformation was detected in 21 wt.% Al2O3-3 mol% Y2O3-ZrO2 ceramic composite when loaded above a stress of 1500 MPa. Therefore, it was concluded that only elastic deformation occurred at low stresses upon loading, which exclude the presence of domain switching in zirconia upon bending under the loading conditions of this study. Full article
(This article belongs to the Special Issue Performance and Applications of Ceramic and Ceramic Composite Materials)
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15 pages, 6048 KiB  
Article
Effect of Loading and Heating History on Deformation of LaCoO3
by Mykola Lugovy, Dmytro Verbylo, Nina Orlovskaya, Michael Reece, Jakob Kuebler, Thomas Graule and Gurdial Blugan
Materials 2021, 14(13), 3543; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14133543 - 25 Jun 2021
Cited by 3 | Viewed by 1342
Abstract
The aim of this work was to study cyclic stress–strain deformation behavior of LaCoO3 as a function of loading and heating history. The ferroelastic hysteretic deformation of LaCoO3 at different stresses and temperatures was characterized using effective Young’s modulus, hysteresis loop [...] Read more.
The aim of this work was to study cyclic stress–strain deformation behavior of LaCoO3 as a function of loading and heating history. The ferroelastic hysteretic deformation of LaCoO3 at different stresses and temperatures was characterized using effective Young’s modulus, hysteresis loop area and creep strain shift parameters. The deformation behavior of LaCoO3 was not significantly affected by the previous loading and heating history when tested at constant temperature. The high temperature strength and Young’s modulus of LaCoO3 were higher compared to at room temperature. A creep strain shift parameter was introduced to characterize creep strain in LaCoO3 for the first time. Full article
(This article belongs to the Special Issue Performance and Applications of Ceramic and Ceramic Composite Materials)
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