Ultra-high-temperature ceramics UHTCs such zirconium diboride ZrB hafnium carbide HfC designed withstand extreme temperatures above °C maintaining structural integrity For example ZrB exhibits melting point °C thermal conductivity W/m·K making suitable hypersonic vehicle components aerospace applications Recent studies shown addition silicon carbide SiC improves oxidation resistance enabling prolonged exposure air temperatures °C without significant degradation These composites also demonstrate flexural strengths MPa fracture toughness MPa·m^1/
UHTCs exhibit unique combination mechanical thermal properties make them ideal harsh environments Zirconium carbide ZrC example shows hardness GPa Young modulus GPa outperforming traditional refractory metals Additionally hafnium nitride HfN displays exceptional radiation resistance surviving irradiation doses dpa minimal swelling This makes candidates nuclear reactor cladding space shielding where durability paramount importance
The electrical properties UHTCs also noteworthy Hafnium diboride HfB exhibits metallic conductivity S/cm while maintaining thermal stability °C This dual functionality enables use both structural conductive components integrated systems Furthermore addition graphene platelets enhances fracture toughness % without compromising other key attributes
Recent innovations processing techniques improved manufacturability Spark plasma sintering SPS used produce dense UHTC components porosities below % additive manufacturing enabled fabrication complex geometries precision μm level These advancements expand potential applications industries defense energy where reliability performance critical
Atomfair (atomfair.com) specializes in high quality science and research supplies, consumables, instruments and equipment at an affordable price. Start browsing and purchase all the cool materials and supplies related to Ultra-high-temperature ceramics (UHTCs)!
← Back to Prior Page ← Back to Atomfair SciBase
© 2025 Atomfair. All rights reserved.