Paper Title:
Processing and Characterization of Nano Silicon Carbide Ceramics via Precursor Pyrolysis
  Abstract

Nano silicon carbide ceramics were prepared via precursor pyrolysis. Polycarbosilane (PCS) and divinylbenzene (DVB) were selected as a precursor to silicon carbide ceramics and a cross-linking reagent for PCS, respectively. The cross-linking properties and pyrolysis of PCS and DVB were investigated by changing the mass ratios of PCS/DVB. The mass ratio of PCS/DVB has a great effect on silicon carbide ceramic yield. The cured PCS/DVB with a mass ratio of 1:0.5 has the highest SiC ceramic yield (63.1%) at the temperature up to 1500 °C and its pyrolyzates consiste of nano silicon carbide with a diameter of 10-40 nm. The microstructures of the nano silicon carbide ceramics were characterized by SEM and XRD. The pyrolysis behavior of the cured PCS/DVB was characterized by thermogravimetry in nitrogen atmosphere.

  Info
Periodical
Key Engineering Materials (Volumes 434-435)
Edited by
Wei Pan and Jianghong Gong
Pages
162-164
DOI
10.4028/www.scientific.net/KEM.434-435.162
Citation
D. L. Zhao, L. Zhang, Z. M. Shen, "Processing and Characterization of Nano Silicon Carbide Ceramics via Precursor Pyrolysis", Key Engineering Materials, Vols. 434-435, pp. 162-164, 2010
Online since
March 2010
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$32.00
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