Results 51 to 60 of about 4,174,026 (90)

Review on ultra-high temperature boride ceramics

open access: yes, 2020
Ceramic materials having melting points higher than 3000 °C and suitable for structural applications at above 2000 °C are commonly known as Ultra-High Temperature Ceramics (UHTCs).
Mukhopadhyay, A   +3 more
core   +1 more source

Effect of Sample Shape and Size on the Thermal Shock Resistance for Ultra-High Temperature Ceramics

open access: yes, 2010
The ceramic thermal shock resistance is usually determined by a strip or a disk sample. However, sample shape and size have greatly effect on determining the strength of Ultra-high temperature ceramics (UHTCs).
Li Li Jiang   +5 more
core   +1 more source

Oxidation resistance of multi-component carbide and boride UHTCS [PDF]

open access: yes, 2017
Bulk samples of high entropy ultra-high temperature ceramics (UHTCs) of the composition (HfNbTaTiZr)C and (HfNbTaTiZr)B2 were fabricated via high energy ball milling and spark plasma sintering.
Harrington, Tyler   +5 more
core   +1 more source

Transient-Liquid-Phase Bonding of UHTCs Using Refractory-Metal-Based Interlayers for High-Efficiency Energy-Generation Applications (First Year Report RT-2013/01)

open access: yes, 2012
Bilateral project between CNR ISTEC and Kyushu University, Fukuoka Japan. This project seeks to fill an emerging technological need by developing effective methods of joining high-performance ultrahigh temperature ceramics (UHTCs) using metal-based ...
Laura Esposito
core  

Scratch-Induced Wear Behavior of Multi-Component Ultra-High-Temperature Ceramics

open access: yes
Multi-component ultra-high-temperature ceramics (MC-UHTCs) are promising for high-temperature applications due to exceptional thermo-mechanical properties, yet their wear characteristics remain unexplored.
Arvind Agarwal   +3 more
core   +1 more source

Robust UHTC for Sharp Leading Edge Applications [PDF]

open access: yes, 2003
Ultrahigh temperature ceramics have performed unreliably due to material flaws and attachment design. These deficiencies are brought to the fore by the low fracture toughness and thermal shock resistance of UHTCs.
Opila, Elizabeth J.   +2 more
core  

Structural stability of UHTCs in extreme environments

open access: yes, 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   +6 more
core  

Research development of ultra-high temperature ceramics

open access: yes
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   +3 more
core   +1 more source

Spark-plasma sintering of ZrB2 ultra-high-temperature ceramics at lower temperature via nanoscale crystal refinement

open access: yes, 2012
We have explored the feasibility of reducing the spark-plasma-sintering (SPS) temperature of additive-free ZrB2 ultra-high-temperature ceramics (UHTCs) via crystal size refinement of the starting powder down to the low nanoscale.
Nygren, Mats,   +3 more
core   +1 more source

Ultra High Temperature Ceramics' Processing Routes and Microstructures Compared

open access: yes, 2009
Ultra High Temperature Ceramics (UHTCs), such as HfB2 and ZrB2 composites containing SiC, are known to have good thermal shock resistance and high thermal conductivity at elevated temperatures.
Lau, Kai-Hung   +5 more
core  

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