Effect of pyrolysis temperature on the electric conductivity of polymer-derived silicoboron carbonitride
Abbreviated Journal Title
J. Eur. Ceram. Soc.
Precursors-organic; Electric conductivity; Activation energy; Carbon; SiBCN ceramics; CERAMICS; TRANSPORT; BEHAVIOR; Materials Science, Ceramics
The electric conductivity of polymer-derived SiBCNs pyrolyzed at different temperatures was studied. We showed that the boron impeded the graphitization of the free-carbon phase in the SiBCN, leading to a higher characteristic temperature and activation energy as compared to the SiCN. Such an impeding effect is due to the interaction between h-BN and graphite phase. We also provided a credible evidence to show that the increase in the electric conductivity of the SiBCN with pyrolysis temperature is likely due to the increase in the conductivity of the free-carbon phase. (C) 2014 Elsevier Ltd. All rights reserved.
Journal of the European Ceramic Society
"Effect of pyrolysis temperature on the electric conductivity of polymer-derived silicoboron carbonitride" (2014). Faculty Bibliography 2010s. 5172.