Aug 13, 2024 · Here we reported a way to synthesize SiC aerogels within seconds and over liter scale, with a demonstrated throughput of ~16 L min −1 in a typical lab experiment. The key lies in renovated...

Aug 1, 2022 · We herein developed SiC nanowire aerogel with quite low thermal conductivity using freeze-drying method. The fabricated SiC nanowire aerogel exhibits ultra-high porosity (∼99.5%), excellent high-temperature stability (∼1700 °C), extremely low thermal conductivity (0.035 W/ (m⋅K)) and good compressive flexibility.

Jun 24, 2020 · Here, to overcome these obstacles, a SiC@SiO 2 nanowire aerogel with a nanowire-assembled anisotropic and hierarchical microstructure was prepared by using directional freeze casting and subsequent heat treatment.

Mar 22, 2022 · The optimum all-ceramic SiC aerogel exhibits effective whole X-band attenuation (>90%) at a fixed thickness of 3.3 mm from room temperature to 400 °C. It is ultralight with a density of 0.2 g/cm 3 and possesses a low thermal conductivity of about 0.05 W/mK.

Mar 6, 2025 · Silicon carbide (SiC) aerogel has emerged as a promising material for thermal protection in key technological fields such as aerospace and military industries due to its low density, highly porous structure, thermal stability at high …

Jul 1, 2023 · The as-synthesized SiC aerogel-2 has abundant and stable porous structures with remarkable multifunctional characteristics, including ultralightweight properties (∼9.8 mg·cm −3), ultralow thermal conductivity (0.026 W·m −1 ·K −1), good fire resistance, superior high-temperature chemical and thermal stability, and excellent resilience ...

Jul 1, 2014 · Monolithic SiC aerogel was prepared by carbothermal reduction of RF/SiO 2 aerogel. The structure evolution during thermal treatment was investigated. The resulting SiC aerogel was component of most of β phase and a small amount of α phase.

Mar 7, 2018 · Silicon carbide (SiC) nanowire offers the integrated properties of elasticity and flexibility of one-dimensional (1D) nanomaterials and superior high-temperature thermal and chemical stability of SiC ceramics, which makes it a promising building block for compressible ceramic nanowire aerogels (NWAs).

Aug 26, 2023 · This SiC NW aerogel exhibits outstanding properties of ultralight density (∼5.82 mg·cm −3), high-temperature oxidation, and great thermal insulation in a wide temperature range (0.063 W·m −1 ·K −1, 100 °C in He and 0.243 W·m −1 ·K −1, 900 °C in He).

Dec 1, 2019 · A novel flexible and recoverable SiC nanofiber aerogel (SiC nf aerogel) was synthesized by electrospinning and freeze-drying methods. The SiC fibers prepared by electrospinning technique, have a fine diameter (~600 nm) and excellent flexibility.