Results 51 to 60 of about 549 (213)

Transient liquid-phase to guide multiphase evolution in reactive-hot-pressed ZrB2–SiC–ZrC ceramics

Journal of Materiomics, 2020
In reactive-hot-pressed ZrB2–SiC–ZrC ceramics, ZrO2 was found to replace ZrC phase, hence leading to confusion in designing ultra-high-temperature ceramics (UHTCs).
Qiang Zheng, Hui Gu, Dong-Li Hu, Guo-Jun Zhang   +3 more
doaj   +1 more source

The beneficial effect of agglomerations of inclusions on the fracture toughness of ceramic nanocomposites

Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
Abstract Agglomerations of carbon‐based inclusions and the low adhesion of inclusion‐matrix interfaces are commonly viewed as detrimental to the strength and fracture toughness of ceramic composites. While large, high‐power agglomerations indeed promote microcracking, our computations show that moderate agglomeration levels can enhance energy ...
Elijah N. Borodin, Alexander G. Sheinerman, Mikhail Yu. Gutkin, Andrey P. Jivkov   +3 more
wiley   +1 more source

Research development of ultra-high temperature ceramics

AIP Advances
Ultra-high temperature ceramics (UHTCs) have excellent high temperature resistance, corrosion resistance, and mechanical properties and are currently a hot research topic worldwide, but there are still many problems to be solved. It can improve oxidation
Jiamei Li, Ye Chen, Lingqing Zhao, Zhengguang Li   +3 more
doaj   +1 more source

The effect of nitrogen doping on the ablation resistance of zirconium carbide ceramics

Journal of Advanced Ceramics
Ultrahigh-temperature ceramics (UHTCs) are prominent candidates for use in thermal protection systems in the aerospace and nuclear industries. This study introduces a nitrogen-doped zirconium carbide that demonstrates remarkable ablation resistance ...
Zheng Peng, Yingjie Cui, Jianbo Song, Sian Chen, Zengsheng Ma, Fuhua Cao   +5 more
doaj   +1 more source

Reaction mechanism and microstructure development of ZrSi2 melt-infiltrated Cf/SiC-ZrC-ZrB2 composites: The influence of preform pore structures

Journal of Materiomics, 2018
Reactive melt infiltration (RMI) is an effective method for fabrication of highly dense carbon fiber reinforced ultra-high temperature ceramic matrix composites (Cf/UHTCs).
Xiaowu Chen, Dewei Ni, Yanmei Kan, Youlin Jiang, Haijun Zhou, Zhen Wang, Shaoming Dong   +6 more
doaj   +1 more source

A unified thermo‐chemo‐mechanical model for passive, active, and interfacial oxidation of silicon carbide

Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
Abstract Silicon carbide (SiC) is a promising material for hypersonic thermal protection systems, but its complex oxidation behavior—marked by transitions between passive, active, and interfacial bubbling regimes—can lead to catastrophic failure. Existing SiC models typically focus exclusively on either passive or active oxidation.
Théo A. Rulko, Raúl A. Radovitzky
wiley   +1 more source

Atomic‐scale structure elucidation of refractory metal carbides derived from metallocene‐based preceramics

Journal of the American Ceramic Society, Volume 108, Issue 12, December 2025.
Abstract Polymer‐derived ceramics (PDCs) are becoming an alluring class of materials that can incorporate the ceramic chemistries found in ultra‐high‐temperature ceramics, such as Ti, Zr, and Hf carbides. The use of polymeric materials intrinsically enables processing techniques with a higher degree of complexity in a more straightforward fashion, such
Stephanie L. Chua, Haira G. Hackbarth, James F. Ponder Jr., Nicholas D. Posey, Yuwei Yang, Pierre‐Olivier Autran, Matthew B. Dickerson, Timothy L. Pruyn, Nicholas M. Bedford   +8 more
wiley   +1 more source

Ab initio study of the effect of substitutional impurities Mo and C on the physico mechanical properties of ZrB2-based solid solutions

Physics Open
A predictive computational approach has been developed and implemented to evaluate the bulk modulus (B) and single-crystal hardness (HV) of ZrB2-based solid solutions containing substitutional Mo and/or C impurities. By employing first-principles studies
Nataliia Rozhenko, Liubov Ovsiannikova, Valerii Kartuzov, Serhii Ivanov   +3 more
doaj   +1 more source

Transition Metal Carbide‐Based Catalysis for Thermocatalytic Conversion Processes: Properties, Synthesis, Applications, and Future Outlook

ChemNanoMat, Volume 11, Issue 11, November 2025.
Transition metal carbides (TMCs) have electronic structure similar to that of platinum group metals, making them attractive for thermocatalysis applications. This review explores several essential aspects, discussing physical and chemical properties of TMCs, synthesis methods, and their utilization in thermocatalytic processes, including generation of ...
Edris Madadian, Yasaman Ghaffari, Yael Zilberman, David S. A. Simakov   +3 more
wiley   +1 more source

Structural stability of UHTCs in extreme environments

, 2018
Hypersonic flights, re-entry vehicles, and propulsion applications all require new materials that can perform in oxidizing or corrosive atmospheres at temperatures in excess of 2000°C and sometimes over the course of a long working life.
Daniel, Doni, Zapata Solvas, Eugenio, Lee, Bill, Cedillos-Barraza, Omar, Valenzuela, Erin, Grasso, Salvatore, Iasi, Cristiano   +6 more
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