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Recent Studies in Advanced Structural Ceramics
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Recent Studies in Advanced Structural Ceramics

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 April 2023) | Viewed by 5577

Special Issue Editor

Prof. Dr. Songlin Ran

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Anhui University of Technology, Maanshan, China
Interests: ultra-high temperature ceramics; composite materials with integrated structure and function; comprehensive utilization of metallurgical solid waste resources

Special Issue Information

Dear Colleagues,

Advanced structural ceramics have gained great importance due to their suitable mechanical properties, such as high hardness, intensive strength, good wear resistance, and outstanding thermal shock resistance under demanding conditions. The research scope in advanced structural ceramics includes powder synthesis, shaping, the sintering method, microstructure control, machining processing, and performance characterization. Recently, theoretical simulation and machine learning have facilitated the development of new advanced structural ceramics. It should also be noted that structural–functional integrated ceramics is an attractive developing direction of advanced ceramics, which may break the boundary between structural ceramics and functional ceramics. In this Special Issue, we aim to gather recent studies in advanced structural ceramics, and all of the above topics are covered.

Prof. Dr. Songlin Ran
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

  • powder synthesis
  • shaping
  • sintering
  • microstructure
  • mechanical properties

Published Papers (4 papers)

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Research

15 pages, 5566 KiB  
Article
Microstructures and Enhanced Mechanical Properties of (Zr, Ti)(C, N)-Based Nanocomposites Fabricated by Reactive Hot-Pressing at Low Temperature
by Mengmeng Zhang, Boxin Wei, Lanqing Liang, Wenbin Fang, Lei Chen and Yujin Wang
Materials 2023, 16(6), 2145; https://doi.org/10.3390/ma16062145 - 07 Mar 2023
Viewed by 1057
Abstract
Dense and enhanced mechanical properties (Zr, Ti)(C, N)-based composites were fabricated using ZrC, TiC0.5N0.5, and Si powders as the raw powders by reactive hot-pressing at 1500–1700 °C. At the low sintering temperature, both (Zr, Ti)(C, N) and (Ti, Zr)(C, [...] Read more.
Dense and enhanced mechanical properties (Zr, Ti)(C, N)-based composites were fabricated using ZrC, TiC0.5N0.5, and Si powders as the raw powders by reactive hot-pressing at 1500–1700 °C. At the low sintering temperature, both (Zr, Ti)(C, N) and (Ti, Zr)(C, N) solid solutions were formed in the composites by adjusting the ratio of ZrC to TiC0.5N0.5. During the sintering process, the Si added at a rate of 5 mol% reacted with ZrC and TiC0.5N0.5 to generate SiC. With the increase in Si addition, it was found that the residual β-ZrSi was formed, which greatly reduced the flexural strength of composites but improved their toughness. The reaction and solid-solution-driven inter-diffusion processes enhanced mass transfer and promote densification. The solid solution strengthening and grain refinement improved the mechanical properties. The ZrC–47.5 mol% TiC0.5N0.5–5 mol% Si (raw powder) composite possessed excellent comprehensive performance. Its flexural strength, Vickers hardness, and fracture toughness were 508 ± 33 MPa, 24.5 ± 0.7 GPa, and 3.8 ± 0.1 MPa·m1/2, respectively. These reached or exceeded the performance of most (Zr, Ti)(C, N) ceramics reported in previous studies. The lattice distortion, abundant grain boundaries, and fine-grained microstructure may make it possible for the material to be resistant to radiation. Full article
(This article belongs to the Special Issue Recent Studies in Advanced Structural Ceramics)
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17 pages, 7297 KiB  
Article
Phase-Field Simulation of Temperature-Dependent Thermal Shock Fracture of Al2O3/ZrO2 Multilayer Ceramics with Phase Transition Residual Stress
by Yong Pang, Dingyu Li, Xin Li, Ruzhuan Wang and Xiang Ao
Materials 2023, 16(2), 734; https://doi.org/10.3390/ma16020734 - 11 Jan 2023
Cited by 3 | Viewed by 1607
Abstract
Compared with single-phase ceramics, the thermal shock crack propagation mechanism of multiphase layered ceramics is more complex. There is no experimental method and theoretical framework that can fully reveal the thermal shock damage mechanism of ceramic materials. Therefore, a multiphase phase-field fracture model [...] Read more.
Compared with single-phase ceramics, the thermal shock crack propagation mechanism of multiphase layered ceramics is more complex. There is no experimental method and theoretical framework that can fully reveal the thermal shock damage mechanism of ceramic materials. Therefore, a multiphase phase-field fracture model including the temperature dependence of material for thermal shock-induced fracture of multilayer ceramics is established. In this study, the effects of residual stress on the crack propagation of ATZ (Al2O3-5%tZrO2)/AMZ (Al2O3-30%mZrO2) layered ceramics with different layer thickness ratios, layers, and initial temperatures under bending and thermal shock were investigated. Simulation results of the fracture phase field under four-point bending are in good agreement with the experimental results, and the crack propagation shows a step shape, which verifies the effectiveness of the proposed method. With constant thickness, high-strength compressive stress positively changes with the layer thickness ratio, which contributes to crack deflection. The cracks of the ceramic material under thermal shock have hierarchy and regularity. When the layer thickness ratio is constant, the compressive residual stress decreases with the increase in the layer number, and the degree of thermal shock crack deflection decreases. Full article
(This article belongs to the Special Issue Recent Studies in Advanced Structural Ceramics)
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10 pages, 2335 KiB  
Article
Effect of TaC Content on Microstructure and Properties of W-TaC Composites
by Kai Xu, Yaning Zhang, Dong Wang, Xing Jin and Xiang Ding
Materials 2023, 16(1), 186; https://doi.org/10.3390/ma16010186 - 25 Dec 2022
Cited by 1 | Viewed by 1138
Abstract
Transition metal carbide reinforcement can improve the performance of pure W. W-(10–50) vol% TaC composites were prepared by spark plasma sintering at 2100 °C. The effect of TaC content on the microstructure, mechanical properties, and thermal conductivity of the composites was studied. The [...] Read more.
Transition metal carbide reinforcement can improve the performance of pure W. W-(10–50) vol% TaC composites were prepared by spark plasma sintering at 2100 °C. The effect of TaC content on the microstructure, mechanical properties, and thermal conductivity of the composites was studied. The ablation resistance of the W-TaC composites was evaluated under an air plasma torch. The addition of TaC into the W matrix enhanced the densification of W-TaC composites, the density of W-40 vol% TaC composite exceeded 93%. TaC particles inhibited the growth of W grains during sintering. Reactive diffusion occurred between W and TaC, forming the solid solutions of (W,Ta)ss and (Ta,W)Css. W and TaC react to form the W2C phase at a TaC content of 50 vol%. The Vickers hardness of the composite increases from 3.06 GPa for WTA1 to 10.43 GPa for WTA5. The flexural strength reached 528 MPa in the W-40 vol% TaC composite. The thermal conductivity of W-20 vol% TaC composite was 51.2 ± 0.2 W·m−1·K−1 at 750 °C. The addition of TaC improved the ablation resistance of W-TaC composites. The mass ablation rate of W-30 vol% TaC composite was 0.0678 g·s−1. The ablation products were mainly W oxides and complex oxides of W-Ta-O. Full article
(This article belongs to the Special Issue Recent Studies in Advanced Structural Ceramics)
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9 pages, 5552 KiB  
Article
Enhanced Mechanical Properties of Yellow ZrN Ceramic with Addition of Solid Solution of TiN
by Zongpeng Wu, Zhen Gao, Jun Zhao, Saisai Li, Qi Hao and Songlin Ran
Materials 2022, 15(21), 7866; https://doi.org/10.3390/ma15217866 - 07 Nov 2022
Cited by 1 | Viewed by 1234
Abstract
As a superhard ceramic with a yellow color and excellent electrical conductivity, ZrN has potential applications in the field of decoration, but it is limited by its poor mechanical properties. In this work, the mechanical properties of ZrN ceramic were improved by forming [...] Read more.
As a superhard ceramic with a yellow color and excellent electrical conductivity, ZrN has potential applications in the field of decoration, but it is limited by its poor mechanical properties. In this work, the mechanical properties of ZrN ceramic were improved by forming a (Zr, Ti)N solid solution via spark plasma sintering of a ZrN and TiN powder mixture. The influences of the amount of TiN additive on the sinterability, microstructure, color, and mechanical properties of ZrN ceramic were investigated. X-ray diffraction analysis, energy-dispersive spectroscopy, and microstructural images indicated that Ti atoms dissolved into a ZrN lattice, and a (Zr, Ti)N solid solution was formed during the sintering process. When the content of TiN was 10 vol%, the obtained (Zr, Ti)N composite exhibited the best comprehensive mechanical properties; the Vickers hardness, flexural strength, and fracture toughness were 15.17 GPa, 520 MPa, and 6.03 MPa·m1/2, respectively. The color coordinates and color temperature diagram revealed the addition of TiN hardly impacted the color performance of the ZrN ceramic. Full article
(This article belongs to the Special Issue Recent Studies in Advanced Structural Ceramics)
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