Results 11 to 20 of about 549 (213)

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

open access: yesCeramics
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.
Gia Garino   +3 more
doaj   +2 more sources

Numerical Simulation for Thermal Shock Resistance of Thermal Protection Materials Considering Different Operating Environments [PDF]

open access: yesThe Scientific World Journal, 2013
Based on the sensitivities of material properties to temperature and the complexity of service environment of thermal protection system on the spacecraft, ultrahigh-temperature ceramics (UHTCs), which are used as thermal protection materials, cannot ...
Weiguo Li   +3 more
doaj   +2 more sources

Numerical Simulation for Thermal Shock Resistance of Ultra-High Temperature Ceramics Considering the Effects of Initial Stress Field [PDF]

open access: yesAdvances in Materials Science and Engineering, 2011
Taking the hafnium diboride ceramic as an example, the effects of heating rate, cooling rate, thermal shock initial temperature, and external constraint on the thermal shock resistance (TSR) of ultra-high temperature ceramics (UHTCs) were studied through
Weiguo Li   +3 more
doaj   +2 more sources

Fabrication of Fully Dense UHTC by Combining SHS and SPS

open access: yesEurasian Chemico-Technological Journal, 2013
The combination of the Self-propagating High-temperature Synthesis (SHS) technique and the Spark Plasma Sintering (SPS) technology is adopted in this work for the fabrication of fully dense MB2-SiC and MB2-MC-SiC (M = Zr, Hf, Ta) Ultra High Temperature ...
C. Musa, R. Licheri, R. Orrù, G. Cao
doaj   +5 more sources

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

open access: yesMaterials (Basel), 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 ...
Liu G, Yan C, Jin H.
europepmc   +2 more sources

Ultrahigh-Temperature Ceramics (UHTCs) Systems

open access: yes, 2018
Phase diagrams of diborides (MB2), monocarbides (MC), and mononitrides (MN) of transitive metals in IVB or VB groups, such as Ti, Zr, Hf, Nb, and Ta, most of which belong to the Ultrahigh-Temperature Ceramic (UHTC) family, are collected in this chapter. Phase diagrams of UHTCs are scarce relative to common oxides, carbides, or nitrides.
Zhenkun Huang, Laner Wu
openaire   +2 more sources

Research Progress on Ultrahigh-Temperature Ceramics Modified C/C Composites. [PDF]

open access: yesMaterials (Basel)
C/C composites have excellent high-temperature mechanical properties and are one of the most promising high-temperature structural materials. However, poor oxidation and ablation resistance of the C/C composites in high-temperature oxygen-containing ...
Gao R   +7 more
europepmc   +2 more sources

Enhancing Ablation Resistance of TaB2-Based Ultra-High Temperature Ceramics by Mixing Fine TaC Particles and Dispersed Multi-Walled Carbon Nanotubes. [PDF]

open access: yesMaterials (Basel)
Ultra-high temperature ceramics (UHTCs) have been widely applied in many fields. In order to enhance the comprehensive properties of TaB2-based UHTCs, the first collaborative use of fine TaC particles and dispersed multi-walled carbon nanotubes (MWCNTs ...
Bo G   +8 more
europepmc   +2 more sources

Sintering and densification of UHTCs

open access: yes, 2012
UHTCs possess outstanding physical and engineering properties, such as high hardness and strength, low electrical resistivity and good chemical inertness. The extremely high melting point and the low self-diffusion coefficient make these materials very difficult to sinter to full density: temperatures above 2000°C and the application of pressure are ...
Diletta Sciti   +3 more
openaire   +3 more sources

Progress in preparation and ablation resistance of ultra-high-temperature ceramics modified C/C composites for extreme environment

open access: yesReviews on Advanced Materials Science, 2023
Carbon/carbon (C/C) composites have received considerable attention for one of the most promising materials in thermal-structural applications owing to their low density, excellent mechanical strength at high temperature, and superior thermal shock ...
Zhu Shibu   +7 more
doaj   +1 more source

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