Results 21 to 30 of about 16,067 (139)

Interaction between Electron and Phonon Subsystems in Hafnium Diboride [PDF]

METALLOFIZIKA I NOVEISHIE TEKHNOLOGII, 2016
Ab initio calculation of the electron???phonon coupling functions is carried out, using full potential LMTO method. Low value of the averaged electron??? phonon interaction constant for HfB??? ??=0.17 indicates that there is no evidence of superconductivity in this compound.
openaire   +2 more sources

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

Unlocking Strength‐Toughness Dilemma in High‐Entropy Borides by Intragranular Microstructural Reconstruction

Advanced Science, Volume 13, Issue 50, 7 September 2026.
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 ...
Yingjun Liu, Yuhan Yao, Yufei Zu, Zhaofu Zhang, Yang Zhang, Hongfeng Dong, Nan Zhang, Wuhao Cao, Lehao Liu, Yuan Hu, Ruiheng An, Wenhu Li, Luyi Zhu, Taotao Ai   +13 more
wiley   +1 more source

Fundamentals of Thermal Transport and Energy Conversion in Ultra‐High Temperature Ceramics: From Microscale Mechanisms to Macroscopic Properties

Advanced Science, Volume 13, Issue 47, 24 August 2026.
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
Zhipeng Pei, Yue Li, Jiayu Xing, Yue Zhu, Ru Zhang, Huan Wu, Zihao Qin, Gang Pei, Man Li   +8 more
wiley   +1 more source

Zirconium‐Based High Emissivity Multilayer Coating for Carbon/Carbon Composite With Enhanced Ablation Resistance

International Journal of Applied Ceramic Technology, Volume 23, Issue 3, June 2026.
ABSTRACT A multilayer coating system was developed as an ablation and thermal protection measure for C/C composites. The multilayer coating architecture consists of SiC, ZrB2‐SiC (ZBS), and ZrC‐ZrO2 (ZZC) sublayers with a Sm2O3‐ZrO2 (SZC) topcoat.
Abdullah Al Saad, Michael Helminiak, Molly M. O'Connor, Michael Brennan, Carlos J. Martinez, Rodney W. Trice   +5 more
wiley   +1 more source

Intrinsic Thermal Transport Properties of ZrB2 From Room Temperature to Melting Point

Rare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Zirconium diboride (ZrB2) is a promising material for extreme‐environment applications, yet its intrinsic high‐temperature thermophysical behavior remains uncertain: Experiments are highly sensitive to processing conditions, simulations omit key mechanisms, and both rarely reach ultrahigh temperatures. Here, we predict the thermal conductivity
Yeojin Lee, Qihao Xu, Hyejin Jang, Tianli Feng   +3 more
wiley   +1 more source

Local Structure and Vacancy Distribution in Transition Metal Carbides: Results From High‐Resolution 13C NMR Spectroscopy

Journal of the American Ceramic Society, Volume 109, Issue 5, May 2026.
The local carbon environment in the refractory transition metal carbides ZrC, HfC, NbC, and TaC was studied using high‐resolution magic angle spinning 13C NMR spectroscopy. Results show that carbon nuclei with next nearest neighbor vacant sites or oxygen/nitrogen impurities are distinguishable through 13C NMR, and that the technique can be used to ...
William F. Rosenberg, Ping Yu, Sabyasachi Sen, Scott J. McCormack   +3 more
wiley   +1 more source

Characteristics of the material based on hafnium diboride obtained by compressing a mixture with aluminum micropowder under heating [PDF]

, 2020
In this article, samples of a hafnium diboride alloy with aluminum obtained by diffusion sintering, as well as by hot pressing with and without preliminary liquid-phase sintering, have been investigated.
Мостовщиков, Андрей Владимирович, Мировой, Юрий Александрович, Белякович, С. А.   +2 more
core  

Effect of Sintering Parameters on the Densification, Microstructure, and Mechanical Performance of ZrB2–SiC Ceramics

International Journal of Applied Ceramic Technology, Volume 23, Issue 2, April 2026.
This graphical abstract illustrates the systematic investigation of Spark Plasma Sintering (SPS) parameters, temperature, pressure, and dwell time, on the densification and mechanical performance of ZrB2–20 vol% SiC composites. It highlights the critical influence of powder processing history (WC vs.
Prakhar Jindal, Iason Krinis, Vera Popovich, Hans Brouwer, Jyoti Botchu, Yinglu Tang   +5 more
wiley   +1 more source

Synthesis and Electronic Structure Modulation of 2D MBenes for Conversion of Nitrates Into Green Ammonia

Small Structures, Volume 7, Issue 3, March 2026.
Two‐dimensional transition metal boride‐based materials as electrocatalysts for nitrate reduction reaction (NO3RR). It covers the synthesis and structure of Mbenes for electrocatalytic nitrate reduction reaction (NO3RR) to ammonia, including ammonia detection methods, following the future perspectives.
Naseem Ahmad Khan, Tayyaba Najam, Muhammad Altaf Nazir, Nadia Tahir, Aziz ur Rehman, Syed Shoaib Ahmad Shah, Pengcheng Guo, Xingke Cai   +7 more
wiley   +1 more source