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论文类型：期刊论文

发表时间：2013-09-01

发表刊物：JOURNAL OF ADVANCED CERAMICS

收录刊物：SCIE、Scopus

卷号：2

期号：3

页面范围：242-245

ISSN号：2226-4108

关键字：silicon carbide (SiC); tetraethyl orthosilicate (TEOS); electrospinning; fibers

摘要：Polycarbosilane (PCS) has been widely used to fabricate silicon carbide (SiC) fibers via pyrolysis. In this paper, for improving the morphology of SiC fibers, tetraethyl orthosilicate (TEOS, m = 1 g, 3 g and 5 g, respectively) was added into the PCS precursor solution (containing 1.5 g PCS). The continuous fibers have been prepared by electrospinning, and then the SiC fibers were synthesized by calcination at 1300 degrees C, 1400 degrees C and 1600 degrees C for 4 h respectively with a heating rate of 10 degrees C/min in flowing nitrogen (N-2). The morphologies of the fibers were investigated by the scanning electron microscope (SEM) and it could be seen that the crystallinity of the SiC fibers was lower, the length of the SiC fibers was increased, and the diameter was uniform with the increase of the addition amount of TEOS.