作者：Pengpeng Liang; Yingnan Cao; Gang Wang; Bingbing Fan; Binbin Dong; Hongxia Li

作者单位：School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China;State Key Laboratory of Advanced Refractories, Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Luoyang, 471039, China;Luoyang Institute of Science and Technology, Luoyang, Hennan, 471023, China

刊名：Ceramics International

ISSN：0272-8842

出版年：2024-10-10

卷：50

期：21

起页：43362-43365

止页：

分类号：

语种：英文

关键词：SiC aerogels;Near-net-shape fabrication;Thermal insulation;High-temperature stability

内容简介

SiC aerogels are excellent porous materials with extensive application prospects. However, their ultra-low density and extremely low strength make them challenging to process. Near-net-shape fabrication is crucial to overcome the manufacturing difficulties of SiC aerogels with complex-shaped. In this work, we propose a novel method for preparing near-net-shape SiC aerogels through the in-situ carbonisation of Si, enabling the fabrication of aerogels with complex geometries. The as-prepared SiC aerogels consist of SiC nanowires (SiCnw) and SiC nanoparticles (SiCnp), which have ultra-low density, excellent thermal insulation, and robust high-temperature stability.