摘要
采用闪速热解法通过聚合物前驱体制备了硅氧碳(SiOC)陶瓷材料。外加电场显著加速了SiOC微观相结构变化,与传统方法相比,SiOC前驱体在较低的热解温度下发生相分离,产生了碳和SiC相。在电场作用下,样品会形成更多的碳化硅和更有序的碳相。其基本原理可以用电场和焦耳加热共同作用下的显著改变相变驱动力来解释。这项工作提供了一个低温合成SiOC纳米复合材料新路线。
Silicon oxide carbon(SiOC)ceramic materials were prepared by flash pyrolysis of polymer precursors.The applied electric field significantly accelerated the microstructure change of SiOC.Compared with the traditional method,the precursor of SiOC was separated at a lower pyrolysis temperature,resulting in the formation of carbon and SiC phases.The sample will form more silicon carbide and more ordered carbon phase under the influence of electric field.The fundamental principle can be explained by the significant change in the phase change driving force under the combined action of electric field and joule heating.This work provides a new route for low temperature synthesis of SiOC nanocomposites.
作者
王力霞
赵玉峰
WANG Lixia;ZHAO Yufeng(School of Vanadium and Titanium Panzhihua University,Panzhihua 617000,China;Electrical and Information Engineering School of Panzhihua University,Panzhihua 617000,China)
出处
《中国陶瓷》
CAS
CSCD
北大核心
2024年第1期22-27,56,共7页
China Ceramics
基金
攀枝花学院博士启动基金(035200335)。
关键词
SiOC陶瓷材料
前驱体法
外加电场
闪速热解
相分离
SiOC ceramics
Precursor method
Applied electric field
Flash pyrolysis
Phase separation
