Ceramic Matrix Composites

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Polycrystalline Ceramics".

Deadline for manuscript submissions: closed (25 November 2021) | Viewed by 2258

Special Issue Editor


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Guest Editor
Department of Mechanical Engineering, Clemson University, Clemson, SC 29634, USA
Interests: ceramic matrix composite; computational mechanics; high-temperature material

Special Issue Information

Dear Colleagues,

Ceramic matrix composites (CMCs) are state-of-the-art advanced lightweight, high-temperature-resistant materials that offer metal-like gradual failure properties despite being manufactured from brittle ceramics. CMCs weigh less than the presently used nickel-based superalloys and their melting temperature is twice as high. Energy systems incorporating these materials have greater fuel and energy efficiency, resulting in significant greenhouse gas emissions reduction. Over the past few 2–3 decades, a significant body of scientific work has been built to develop an understanding of material properties, characterization techniques, manufacturing methods, etc. for CMCs. CMC components have already been deployed in commercial aviation. As industry continues to expand the usage of CMCs, adapting the current scientific knowledge using commercial modelling tools is necessary to guide future development. The aim of this Special Issue is to provide a state-of the-art review of present and potential applications of CMCs, showcasing application-oriented modelling techniques for CMCs. Researchers are encouraged to submit their work highlighting examples of the application of material constitutive models for CMCs, models for CMC fabrication, in-service degradation of CMC components due to fatigue, creep oxidation, and related topics. Research articles from this Issue aim to bridge the gap between fundamental work and its application pertaining to CMCs. Researchers and practicing engineers will find excellent applications of complicated CMC modelling techniques which have been developed over the past several years. 

Dr. Rohan Galgalikar
Guest Editor

Manuscript Submission Information

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Keywords

  • ceramic matrix composites
  • material constitutive models
  • high-temperature material
  • material degradation
  • CMC model applications

Published Papers (1 paper)

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Research

11 pages, 3625 KiB  
Article
Fabrication of C/C–SiC–ZrB2 Ultra-High Temperature Composites through Liquid–Solid Chemical Reaction
by Qian Sun, Huifeng Zhang, Chuanbing Huang and Weigang Zhang
Crystals 2021, 11(11), 1352; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11111352 - 07 Nov 2021
Cited by 1 | Viewed by 1951
Abstract
In this paper, we aimed to improve the oxidation and ablation resistance of carbon fiber-reinforced carbon (CFC) composites at temperatures above 2000 °C. C/C–SiC–ZrB2 ultra-high temperature ceramic composites were fabricated through a complicated liquid–solid reactive process combining slurry infiltration (SI) and reactive [...] Read more.
In this paper, we aimed to improve the oxidation and ablation resistance of carbon fiber-reinforced carbon (CFC) composites at temperatures above 2000 °C. C/C–SiC–ZrB2 ultra-high temperature ceramic composites were fabricated through a complicated liquid–solid reactive process combining slurry infiltration (SI) and reactive melt infiltration (RMI). A liquid Si–Zr10 eutectic alloy was introduced, at 1600 °C, into porous CFC composites containing two kinds of boride particles (B4C and ZrB2, respectively) to form a SiC–ZrB2 matrix. The effects and mechanism of the introduced B4C and ZrB2 particles on the formation reaction and microstructure of the final C/C–SiC–ZrB2 composites were investigated in detail. It was found that the composite obtained from a C/C–B4C preform displayed a porous and loose structure, and the formed SiC–ZrB2 matrix distributed heterogeneously in the composite due to the asynchronous generation of the SiC and ZrB2 ceramics. However, the C/C–SiC–ZrB2 composite, prepared from a C/C–ZrB2 preform, showed a very dense matrix between the fiber bundles, and elongated plate-like ZrB2 ceramics appeared in the matrix, which were derived from the dissolution–diffusion–precipitation mechanism of the ZrB2 clusters. The latter composite exhibited a relatively higher ZrB2 content (9.51%) and bulk density (2.82 g/cm3), along with lower open porosity (3.43%), which endowed this novel composite with good mechanical properties, including pseudo-plastic fracture behavior. Full article
(This article belongs to the Special Issue Ceramic Matrix Composites)
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