Advancements in Processing and Properties of Ceramic Matrix Composites

A special issue of Journal of Composites Science (ISSN 2504-477X). This special issue belongs to the section "Composites Manufacturing and Processing".

Deadline for manuscript submissions: 31 August 2024 | Viewed by 1133

Special Issue Editors


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Guest Editor
Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
Interests: ceramics; ceramic matrix composites; additive manufacturing; processing; extreme environment materials

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Guest Editor
Department of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL, USA
Interests: design innovation enabled by newer materials and manufacturing; material and thermal solutions for extreme environments

Special Issue Information

Dear Colleagues,

Ceramic materials are critical in many applications involving high temperatures and extreme environments. Ceramic materials do not melt, and many compositions have excellent stability against corrosion at high temperatures in various aggressive environments. However, ceramic materials tend to fail catastrophically when stressed in tension, limiting their potential use in harsh-environment structural applications, such as turbine engines for power generation and aircraft propulsion, industrial manufacturing processes, spacecraft thermal protection systems, as well as nuclear fission and fusion power generation.

For these reasons, structural applications of ceramic materials typically employ ceramic matrix composites (CMCs), incorporating discontinuous or continuous fibers, or other ceramic or metallic reinforcements, in order to enable crack deflection and graceful failure mechanisms. Continuous fiber reinforced ceramic composite materials have been the state of the art for decades. However, traditional fabrication techniques for CMCs are expensive, slow and require significant hand operations. In recent years, integrated computational materials engineering (ICME), artificial intelligence and machine learning combined with increased supercomputing resources has resulted in development of advanced ceramic and composite compositions. In addition, the advent of many different types of advanced, additive and automated manufacturing processes has enabled fabrication of composite structures that were previously unattainable, as well as improving fabrication of traditional discontinuous and continuous fiber-reinforced composites.

The focus of this Special Issue is to capture the results of various investigations into the processing and properties of advanced CMCs. Research areas may include (but are not limited to) innovations in identifying novel compositions, reinforcing phase configurations, and advanced manufacturing techniques, as well as modeling and simulation of processing, structures and properties of advanced ceramic composite materials. Original research and review articles are welcome.

Dr. David J. Mitchell
Dr. Jayanta S. Kapat
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. Journal of Composites Science 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

  • ceramic matrix composites
  • additive manufacturing
  • material processing
  • extreme environment materials
  • material characterization
  • artificial intelligence
  • machine learning
  • material model

Published Papers (1 paper)

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Research

19 pages, 15124 KiB  
Article
Study of the Structural, Electrical, and Mechanical Properties and Morphological Features of Y-Doped CeO2 Ceramics with Porous Structure
by Rafael I. Shakirzyanov, Natalia O. Volodina, Artem L. Kozlovskiy, Maxim V. Zdorovets, Dmitriy I. Shlimas, Daryn B. Borgekov and Yuriy A. Garanin
J. Compos. Sci. 2023, 7(10), 411; https://doi.org/10.3390/jcs7100411 - 04 Oct 2023
Viewed by 901
Abstract
In this work, ceramic samples of cerium oxide doped with yttrium were investigated. The concentration of a dopant Y(NO3)3 varied from 5 to 25 wt% in the initial charge. In the course of the experiment, a simple method was developed [...] Read more.
In this work, ceramic samples of cerium oxide doped with yttrium were investigated. The concentration of a dopant Y(NO3)3 varied from 5 to 25 wt% in the initial charge. In the course of the experiment, a simple method was developed to obtain ceramics with a porosity of ~20% via one-step annealing in air in a muffle furnace. For comparison, samples with two annealings were also synthesized to determine the effects of pores on electrical, structural, and mechanical characteristics. The obtained samples were examined via X-ray powder diffraction, scanning electron microscopy, X-ray energy dispersive spectroscopy, Raman spectroscopy, dielectric spectroscopy, and Vickers microhardness measurements. The substitution of Ce4+ ions with Y3+ ions led to a significant decrease in the lattice parameter, average crystallite size, and average grain size, with a simultaneous increase in the lattice defectivity, dielectric constant, electrical conductivity, and microhardness values. It is shown that samples with a dopant weight fraction of 0.05–0.15 and one-step annealing have favorable electrical and mechanical characteristics for energy applications as porous materials with ionic conductivity. Full article
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