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Showing posts with the label ceramics

Lead-free ceramic energy storage overcomes high energy storage density/ high breakdown strength (voltage resistance) trade-off

https://www.eurekalert.org/news-releases/1126217 "A/B-site multi-ion co-doping modifies barium titanate-based ceramics... A-site doping induces simultaneous cubic, tetragonal, rhombohedral nanoclusters facilitating polarization under electric field/ quick return to neutral state (less energy loss)... B-site tantalum ion doping induces crystal lattice contraction increasing grain boundary activation energy, blocking charge carriers/ enabling higher voltages... 15.3 J/cm^3 recoverable energy density... high-performance pulse power capacitors"

Transparent ceramics exhibiting efficient electro-optic effect, which is the ability to control or bend light when an electrical voltage is applied

https://techxplore.com/news/2025-12-transparent-ceramic-boost-internet-energy.html "cheaper, easier manufacture at scale, better chemical composition control... faster, smaller, more energy-efficient... contain tiny, dynamic few atoms wide polarization pockets fluctuating continuously... zentropy theory: with small, fluctuating pockets, extremely low energy barrier required for polarization to flip, allowing almost instant polarization adjustment under applied electric field... optical communications, sensing, medical imaging, optical modulators/ switches... future: make lead-free, replace lithium niobate"

Nitrogen's synergistic hardness-toughness enhancement overcomes conventional trade-off in ceramics such as transition metal carbides

https://www.eurekalert.org/news-releases/1102393 "single-phase solid (Ti, Zr)C carbide ceramic doped with 25% nitrogen content, restricting dislocation formation/ movement by reducing stacking fault energy, then high-temperature aging triggering spinodal decomposition, creating complex lamellar nanostructure... both harder/ more cracking resistant... 40% hardness increase, 50% fracture toughness increase... excessive nitrogen content or over-aging detrimental... high-temperature equipment, machining/ cutting tools, wear-resistant components, aerospace engines" Related: Electrospun nanofiber‑based ceramic aerogels: Synergistic strategies for design and functionalization https://www.eurekalert.org/news-releases/1102351 High pressure makes ceramics stronger https://www.eurekalert.org/news-releases/1113273 Ultrahigh solid loading enables high precision ceramic parts https://techxplore.com/news/2026-01-ultrahigh-solid-enables-high-precision.html

High-purity, high-strength, uniform silicon carbide ceramics 3D printed at 1100 °C efficiently and economically in one step

https://www.eurekalert.org/news-releases/1092665 "hardness/ brittleness makes shaping difficult, solved using vat polymerization: layer by layer 3D printing using light cured liquid resin... added: silica improves quality, methyl-phenyl-polysiloxane improves strength... compressive/ bending strengths comparable to 1,400℃ sintering, high specific strength, low density... formation of silicon carbide oxide phase, filling gaps between printed layers, for better bonding/ reduced anisotropy... avoids need for non-silicon binders... ceramics survive extreme environments" Related: Unlocking ceramic 3D printing for next-generation chemical reactors https://www.eurekalert.org/news-releases/1098725 Breakthrough in ZrC ceramics: Multi-scale structural design via two-step in-situ reactive spark plasma sintering significantly enhances strength and toughness https://www.eurekalert.org/news-releases/1118639 How adding a microwave to a 3D printer makes flawless and heat-proof ceramics https:...

Core-cladding-like phosphor ceramics wafer excited with high power density blue laser diodes as an ultra-high luminance light source

https://www.eurekalert.org/news-releases/1094365 "increases light sources' luminance using phosphor material that both limits light spot expansion/ boosts maximum luminous flux, balancing trade-off between them... gel-casting optical fiber-like core-cladding phosphor ceramic green bodies with different core diameters, then sintered at 2023°K for 5 hours in vacuum maintained at 10⁻3 Pa, finally interface between core/ cladding tightly bonded/ interface devoid of porosity... control over light spot area by adjusting core dimensions... searchlights, night vision, projection displays"

Microwave dielectric ceramics with low loss/ temperature stability enable faster, more reliable 5G/6G devices, further X-band applications

https://www.eurekalert.org/news-releases/1093751 "YMAG garnet-type ceramic synthesized using solid-state reaction... exhibits impressive microwave properties for high-frequency applications: high Q×f value indicates low dielectric loss, low permittivity reduces signal delay, TiO2 compensation agent enhances temperature stability... rectangular dielectric resonator antenna achieves excellent impedance matching (VSWR=1.02), >90% radiation efficiency in X-band (10.21 GHz), further validating the material’s application potential... resonators, filters, antennas"

Lightweight, robust aerogel composites combining high-temperature insulation with mechanical load-bearing can be fabricated in large sizes

https://www.eurekalert.org/news-releases/1090045 "carbon fiber reinforced using expandable graphite interfacial bonding agent... ceramic-based aerogel composites with novel precursor impregnation/ in-situ dual-morphology growth... enables simultaneous formation of dense silicon carbide coatings/ nanowire network within carbon fiber structure, improving oxidation resistance/ ablation... both types of composites demonstrated the feasibility of large-size fabrication, with samples successfully prepared and capable of being cut and processed as needed" Related: Highly porous dual-phase high-entropy ultrahigh-temperature ceramic with outstanding properties https://www.eurekalert.org/news-releases/1093451 Bilayer ceramic coating shown to significantly increase tool life in titanium alloy micromachining https://techxplore.com/news/2026-01-bilayer-ceramic-coating-shown-significantly.html

Miura-ori origami-inspired 3D printed ceramics with a soft polymer coating can bend under pressure without breaking

https://www.eurekalert.org/news-releases/1081477 "folding patterns change ceramics from fragile to tough/ flexible... origami pattern that folds/ stays flat, coated with stretchable, biocompatible polymer... flexes/ recovers when compressed in different directions... polymer coating introduced just enough flexibility to prevent sudden breakage under both static and cyclic compression... coated versions consistently showed greater toughness, especially in directions where the original ceramic was weakest... medical prosthetics, impact-resistant aerospace/ robotic components" Related: Origami points to new materials that 'breathe' and twist on command https://techxplore.com/news/2025-05-origami-materials.html Folding the future: Origami helping engineer transform materials, structures https://techxplore.com/news/2025-09-future-origami-materials.html Novel kiri-origami structures enable high-performance stretchable electronics https://www.eurekalert.org/news-releases/109...