Near-net-shape fabrication of SiC aerogels through in-situ carbonisation of Si

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 thi...

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Bibliographic Details
Published in:Ceramics international 2024-11, Vol.50 (21), p.43362-43365
Main Authors: Liang, Pengpeng, Cao, Yingnan, Wang, Gang, Fan, Bingbing, Dong, Binbin, Li, Hongxia
Format: Article
Language:English
Subjects:
High-temperature stability
Near-net-shape fabrication
SiC aerogels
Thermal insulation
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Summary: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.
ISSN:0272-8842
DOI:10.1016/j.ceramint.2024.08.129