Results 11 to 20 of about 4,174,047 (104)

Fundamentals of Thermal Transport and Energy Conversion in Ultra-High Temperature Ceramics: From Microscale Mechanisms to Macroscopic Properties. [PDF]

Adv Sci (Weinh)
This review critically examines thermal transport and radiative properties of ultra‐high temperature ceramics for hypersonic flight, advanced nuclear systems, and next‐generation energy conversion devices. It explores phonon–photon–electron interactions, microstructural engineering, thermoelectric conversion, and machine learning‐accelerated multiscale
Pei Z, Li Y, Xing J, Zhu Y, Zhang R, Wu H, Qin Z, Pei G, Li M.   +8 more
europepmc   +3 more sources

Engineering C_f /ZrB₂ -SiC-Y₂ O₃ for Thermal Structures of Hypersonic Vehicles with Excellent Long-Term Ultrahigh Temperature Ablation Resistance. [PDF]

Adv Sci (Weinh), 2023
The Y2O3 reinforced Cf/ZrB2‐SiC composites are designed in this work to form the high stability oxide protective layer. The size effect of the formed Zr0.9Y0.1O1.95 nano‐crystals increases the viscosity of oxide layer and retarding the evaporation of SiO2 phase during ablation, which significantly improve the long‐term and cyclic ablation properties of
Chen B, Ni D, Bao W, Liao C, Luo W, Song E, Dong S.   +6 more
europepmc   +2 more sources

Unlocking Strength-Toughness Dilemma in High-Entropy Borides by Intragranular Microstructural Reconstruction. [PDF]

Adv Sci (Weinh)
An extreme non‐equilibrium process combining heavy direct current sintering and TiSi2 addition is used to construct intragranular energy dissipation units within high‐entropy boride ceramics to overcome the strength‐toughness trade‐off. The resulting ceramic demonstrates attractive mechanical properties with a flexural strength of 887 MPa and a ...
Liu Y, Yao Y, Zu Y, Zhang Z, Zhang Y, Dong H, Zhang N, Cao W, Liu L, Hu Y, An R, Li W, Zhu L, Ai T.   +13 more
europepmc   +2 more sources

A Model of Temperature-Dependent Young's Modulus for Ultrahigh Temperature Ceramics [PDF]

, 2011
Based on the different sensitivities of material properties to temperature between ultrahigh temperature ceramics (UHTCs) and traditional ceramics, the original empirical formula of temperature-dependent Young's modulus of ceramic materials is unable to ...
Ruzhuan Wang, Weiguo Li, Dingyu Li, Daining Fang   +3 more
core   +1 more source

Colloidal Processing of Complex-Shaped ZrB2-Based Ultra-High-Temperature Ceramics: Progress and Prospects

, 2022
Ultra-high-temperature ceramics (UHTCs), such as ZrB2-based ceramics, are the most promising candidates for ultra-high-temperature applications. Due to their strong covalent bonding and low self-diffusion, ZrB2-based UHTCs are always hot-pressed at ...
Changhai Yan, Hua Jin, Guoqian Liu
core   +1 more source

Creep and Oxidation of Hafnium Diboride-Based Ultra High Temperature Ceramics at 1500°C [PDF]

, 2015
Ultra high temperature ceramics (UHTCs) are leading candidates for aerospace structural applications in high temperature environments, including the leading edges of hypersonic aircraft and thermal protection systems for atmospheric re-entry vehicles ...
DeGregoria, Anthony J., Anthony J. DeGregoria   +1 more
core   +2 more sources

Ultra-High Temperature Ceramics for solar receivers: spectral and high-temperature emittance characterization [PDF]

, 2012
We report on the preparation, room temperature spectral reflectance and high-temperature thermal emittance characterization of different boride and carbide Ultra-High Temperature Ceramics (UHTCs).
D. Jafrancesco, D. Sciti, E. Sani, Sani, E., Sans, J. L., L. Mercatelli, J. L. Sans, Jafrancesco, D., Sciti, D., Mercatelli, L., Sciti D, Sani E, Jafrancesco D, Mercatelli L, Sans J L   +14 more
core   +1 more source

Ultrarapid Transient-Liquid-Phase Bonding of Advanced Ceramics

, 2010
Interlayer designs and processing conditions that promote rapid and reliable transientliquid- phase (TLP) bonding/joining of Al2O3 and ZrO2-toughened Al2O3 ceramics are presented.
Thomas B. Reynolds, Sung M. Hong, Noritaka Saito, Andreas M. Glaeser, Christopher C. Bartlow   +4 more
core   +1 more source

Expanding the members of ultra-high temperature ceramics and their maximum service temperature exceeding 3000 °C

Journal of Advanced Ceramics
Aerodynamic heating, oxidation, ablation, and high dynamic pressure represent the extreme environments that aerospace vehicles must withstand during high-Mach atmospheric or trans-atmospheric flight. The temperature of critical components on the vehicles
Fei Li, Guo-Jun Zhang, Yanchun Zhou, Xinghong Zhang   +3 more
doaj   +1 more source

Core–Shell UHTCs as a Multiscale Design Paradigm for Extreme Environments

International Journal of Applied Ceramic Technology, Volume 23, Issue 5, October 2026.
ABSTRACT An integrated perspective on the performance of multiscale core–shell ultra‐high temperature ceramics (UHTCs) developed through a multiphase design strategy is here presented. The manuscript merges insights gained from studies on ZrB2 formulated and processed in the presence of a second transition metal compound based on W, Mo, or Ta ...
Laura Silvestroni
wiley   +1 more source