Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10624499 | Ceramics International | 2016 | 7 Pages |
Abstract
Large scale core-shell SiC/SiO2 nanowires with the lengths ranging from several tens to several hundreds of micrometers have been successfully synthesized by using silicon and carbon black as raw materials with a catalyst-assisted chemical vapor reaction process. The nanowires with diameters in the range of 40-120 nm consist of β-SiC core coated with a thickness of 2-3 nm amorphous SiO2 shell and the catalyst played an important role in the growth of the nanowires. The main component of the crucible, namely alumina may be as a novel effective mediator playing an important role in the content of SiO2 during the growth of the core-shell nanowires, which provides a promising method to fabricate nanowires in a large scale production, and an alumina-assisted vapor-liquid-solid (VLS) mechanism was proposed for the growth mode of the core-shell SiC/SiO2 nanowires.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Ping Hu, Shun Dong, Dongyang Zhang, Cheng Fang, Xinghong Zhang,