NDLI: Preparation and characterization of continuous high-temperature resistant Si-Al-C fibers by one-step method

Content Provider	Springer Nature Link
Author	Zheng, ChunMan Li, XiaoDong Wang, Hao Zhao, DaFang Hu, TianJiao
Copyright Year	2008
Abstract	Using polymer-derived technology, continuous high-temperature resistant Si-Al-C fibers were prepared by one step method, which included melt-spinning of polyaluminocarbosilane (PACS), curing of continuous PACS fibers, and sintering of the cured products. The results show that the average diameter and tensile strength of continuous Si-Al-C fibers are 11 to 12 μm and 1.8 to 2.0 GPa, respectively. The chemical formula of Si-Al-C fibers is SiC$_{1.01}$O$_{0.040}$0Al$_{0.024}$, which is nearly stoichometric. The fibers are mainly composed of β-SiC crystalline, small amount of α-SiC, and amorphous SiC. Continuous Si-Al-C fibers exhibit excellent thermal stability. When the fibers were exposed in argon for 1 h, the tensile strength did not decrease until 1500°C. After heat treatment at 1800°C in argon for 1 h, the fibers maintained about 80% of the initial strength. It was higher than that of Nicalon and Hi-Nicalon fibers.
Starting Page	1425
Ending Page	1432
Page Count	8
File Format	PDF
ISSN	10069321
Journal	Science in China Series E: Technological Sciences
Volume Number	51
Issue Number	9
e-ISSN	1862281X
Language	English
Publisher	SP Science in China Press
Publisher Date	2008-08-08
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	high-temperature resistant continuous Si-Al-C fibers one step method polymer-derived technology Engineering
Content Type	Text
Resource Type	Article
Subject	Engineering Materials Science

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