Porous SiO2/SiC Fiber via Carbothermal-Reduction of Hybrid Fiber in Air Flows

被引：0
|
作者：
Song, Qiusheng [1 ]
Zhang, Kai [1 ]
Xu, Shun [1 ]
Zhong, Zhenbiao [1 ]
Li, Meng [1 ]
机构：
[1] Hefei Univ Technol, Sch Chem Engn, Hefei 230009, Peoples R China
来源：
APPLICATION OF CHEMICAL ENGINEERING, PTS 1-3 | 2011年 / 236-238卷
关键词：
SiO2/SiC; Carbothermal-Reduction; Sol-gel method; Hybrid fiber; SILICON-CARBIDE; ACID;
D O I：
10.4028/www.scientific.net/AMR.236-238.1492
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Using tetraethoxysilane (TEOS) and novolac-PF as raw materials, SiO2/PF hybrid fibers were prepared via sol-gel associated with drawing process, and then sintered at different temperatures (500-1300 degrees C) under air atmosphere. The microstructure variation and reaction mechanism of the fiber were investigated by FT-IR, XRD, and SEM measurements. The results showed that the microstructure variation of the hybrid fiber was influenced greatly by sintering temperatures. When the sintering temperature was below 900 degrees C, the fibers were amorphous, and converted into porous SiO2/SiC fibers after being sintered at 1300 degrees C.
引用
收藏
页码：1492 / 1496
页数：5
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