Enhanced Electric Conductivity Of Polymer-Derived Sicn Ceramics By Microwave Post-Treatment

Keywords

electric conductivity; microwave posttreatment; polymer-derived SiCN ceramics

Abstract

The effect of microwave treatment on the electric conductivity and structure of a polymer-derived SiCN ceramic is studied. It is found that the conductivity of the microwave-treated sample is about 40 times higher than that of the conventional heat-treated one at the same temperature and dwell time conventionally. The X-ray diffraction patterns show that both samples are amorphous without obvious crystallization. Raman analysis reveals that the microwave-treated sample exhibited a narrower full width at half maximum and upper-shift of G peak. X-ray photoelectron spectroscopy spectra show that there is a significant sp3-to-sp2 transition of free carbon in the microwave-treated sample. These results suggest that the microwave-treatment can induce a distinct structure evolution of the free carbon, which contributes to the remarkable enhancement of the conductivity of the sample.

Publication Date

3-1-2017

Publication Title

Journal of the American Ceramic Society

Volume

100

Issue

3

Number of Pages

842-847

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1111/jace.14590

Socpus ID

85007452326 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85007452326

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