Electric conductivity and microstructure evolution of polymer-derived SiAlCO ceramics

被引：26

作者：

Cao, Yejie ^{[1
]}

Yang, Xueping ^{[1
]}

An, Linan ^{[1
]}

机构：

[1] Univ Cent Florida, Adv Mat Proc & Anal Ctr, Dept Mat Sci & Engn, Orlando, FL 32816 USA

来源：

CERAMICS INTERNATIONAL | 2016年 / 42卷 / 03期

基金：

美国国家科学基金会;

关键词：

Polymer-derived ceramic; SiAlCO; Electric conductivity; Activation energy; SILICOBORON-CARBONITRIDE; PYROLYSIS TEMPERATURE; AMORPHOUS-CARBON; PIEZORESISTIVITY; SPECTROSCOPY; REDUCTION; OXIDATION; GRAPHITE; BEHAVIOR; GLASSES;

D O I：

10.1016/j.ceramint.2015.11.073

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The electric conductivity and microstructure of polymer-derived SiAlCO ceramic were studied. The conductivity increased drastically with increasing pyrolysis temperature and exhibited a typical Arrhenius dependence on pyrolysis temperature with the activation energy of similar to 7.15 eV. The microstructure was analyzed by XRD, Raman spectroscopy and XPS. Unlike previous reported PDCs, the increase in the conductivity of the SiAlCO cannot be explained by the structural changes of the free carbon phase. It is speculated that the increased conductivity is possibly due to the redistribution of C-O bonds within the free carbon phase. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：4033 / 4038

页数：6

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