Polycarbosilane (PCS) was used as a precursor to prepare porous silicon carbide (SiC) ceramics with in situ growth of b-SiC nanowires. The pore size of the as-prepared porous ceramics was 1.37 lm in average, and had a narrow distribution. The nanowires with diameters ranging from B10 to 50 nm existed in the channels of the porous body. Their morphology, microstructure, and composition were characterized by field emission scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectroscopy, which confirmed that the nanowires had a single-crystal b-SiC structure with the /111S growth direction. A vapor-liquid-solid process was discussed as a possible growth mechanism of the b-SiC nanowires.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.