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High-temperature antioxidant ceramic aerogel and preparation method thereof
The invention discloses high-temperature antioxidant ceramic aerogel and a preparation method thereof, and belongs to the technical field of ceramic aerogel. The main body of the high-temperature anti-oxidation ceramic aerogel is silicon nitride aerogel, and the nanostructure of the silicon nitride aerogel is one or a combination of two of a one-dimensional silicon nitride nanowire and a two-dimensional silicon nitride nanoribbon. The nanostructure of the silicon nitride aerogel is sequentially coated with a silicon carbide precursor coating and a zirconium carbide precursor coating from inside to outside. According to the invention, the defects that the traditional ceramic aerogel is easy to oxidize and lose efficacy at ultrahigh temperature and is difficult to prepare at low cost on a large scale can be solved.
本发明公开了一种高温抗氧化陶瓷气凝胶及其制备方法，属于陶瓷气凝胶技术领域。所述高温抗氧化陶瓷气凝胶的主体为氮化硅气凝胶，所述氮化硅气凝胶的纳米结构为一维氮化硅纳米线和二维氮化硅纳米带中的一种纳米结构或两种纳米结构的组合；所述氮化硅气凝胶的纳米结构上由内向外依次包覆有碳化硅前驱体涂层和碳化锆前驱体涂层。本发明能够解决传统陶瓷气凝胶超高温下易氧化失效和难以低成本规模化制备的缺陷。
High-temperature antioxidant ceramic aerogel and preparation method thereof
The invention discloses high-temperature antioxidant ceramic aerogel and a preparation method thereof, and belongs to the technical field of ceramic aerogel. The main body of the high-temperature anti-oxidation ceramic aerogel is silicon nitride aerogel, and the nanostructure of the silicon nitride aerogel is one or a combination of two of a one-dimensional silicon nitride nanowire and a two-dimensional silicon nitride nanoribbon. The nanostructure of the silicon nitride aerogel is sequentially coated with a silicon carbide precursor coating and a zirconium carbide precursor coating from inside to outside. According to the invention, the defects that the traditional ceramic aerogel is easy to oxidize and lose efficacy at ultrahigh temperature and is difficult to prepare at low cost on a large scale can be solved.
本发明公开了一种高温抗氧化陶瓷气凝胶及其制备方法，属于陶瓷气凝胶技术领域。所述高温抗氧化陶瓷气凝胶的主体为氮化硅气凝胶，所述氮化硅气凝胶的纳米结构为一维氮化硅纳米线和二维氮化硅纳米带中的一种纳米结构或两种纳米结构的组合；所述氮化硅气凝胶的纳米结构上由内向外依次包覆有碳化硅前驱体涂层和碳化锆前驱体涂层。本发明能够解决传统陶瓷气凝胶超高温下易氧化失效和难以低成本规模化制备的缺陷。
High-temperature antioxidant ceramic aerogel and preparation method thereof
一种高温抗氧化陶瓷气凝胶及其制备方法
FENG LEI (author) / XU DONGFANG (author)
2024-11-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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