RESEARCH ARTICLE


Preparation and Characterization of Continuous Fe-Containing Silicon Carbide Radar Absorbing Fibers from Precursor-Based Processing



Zhiyan Chen*, 1, Jun Wang2, Xiaodong Li2, Hao Wang2
1 School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, P.R. China
2 Key Lab of Advanced Ceramic Fibers and Composites, College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, P.R. China


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© 2012 Chen et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* *Address correspondence to this author at the School of Materials Science & Engineering, Central South University of Forestry & Technology, Changsha 410004, P.R. China; Tel: +86-731-85623221; Fax: +86-731-85623303; E-mail: spchen@163.com


Abstract

A new polymer polyferrocarbosilane (PFCS) was synthesized using polydimethylsilane and ferrocene as the raw materials. The polymer was then melt-spun into continuous PFCS fibers, cured in air and heat-treated in a nitrogen atmosphere up to 1300􀀁, a kind of Fe-containing SiC fibers were finally obtained. The SiC(Fe) ceramic fibers were combined with epoxy resin and a structural material was prepared showing excellent radar absorbing properties. HRTEM, XRD and XPS were used to characterize the SiC(Fe) fibers. The results show that the fibers are composed of β-SiC, amorphous SiCxO4-x, free carbon and small amount of Fe3Si-like microcrystals. A carbon-enriched layer of about 120nm was formed on the surface of the fibers.

Keywords: Continuous SiC(Fe) fibers, polyferrocarbosilane, radar-wave absorbing properties.