Paper Title:
SAXS Characterization of Nanochannels in Polymer-Derived SiC Fibers
  Abstract

In the preparation of polymer-derived SiC fibers, nanochannels are believed to be formed in the early pyrolysis stages due to loss of large volumes of pyrolysis gases. In this paper, small angle X-ray scattering (SAXS) was applied to the characterization and calculation of nanochannels in partiallypyrolyzed SiC fibers. The SAXS measurements showed that nanochannels with a radius of 1.0-20 nm were formed for fibers heat-treated at 973K and 1173K. But their distributions were not continuous and at lower part of the distribution, a peak value was observed at about 1.2nm. This means if the nanochannels are finely controlled, the partially-pyrolyzed SiC fibers have great potential application in the fields of hydrogen storage, gas separation, and so on.

  Info
Periodical
Key Engineering Materials (Volumes 336-338)
Edited by
Wei Pan and Jianghong Gong
Pages
1301-1303
DOI
10.4028/www.scientific.net/KEM.336-338.1301
Citation
Z. Y. Chu, R. A. He, X. D. Li, H. F. Cheng, J. Wang, "SAXS Characterization of Nanochannels in Polymer-Derived SiC Fibers", Key Engineering Materials, Vols. 336-338, pp. 1301-1303, 2007
Online since
April 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Qian Feng, Shao Ming Dong, Yu Sheng Ding, Qing Zhou, Akira Kohyama
Abstract:Chopped fiber and a hybrid reinforcement of chopped and continuous fibers were used for fabricating SiC/SiC composites. Under the selected...
1257
Authors: L. Ji, N.L. Shi, Rui Yang
Abstract:CVD (chemical vapor deposition) SiC continuous fiber is used as reinforcement of metal matrix composites because of its high strength, high...
1571
Authors: Bin Li, Chang Rui Zhang, Feng Cao, Si Qing Wang, Ying Bin Cao, Bang Chen
Abstract:Toray T300 PAN-based carbon fibers were surface oxidized in air at 300, 400 and 500 °C. The composition of surface was determined by X-ray...
901
Authors: Jae Seol Lee, Hyeon Taek Son, Toyohiko Yano
Abstract:The layers of ZrO2-Al2O3 were coated on the surface of SiC fibers (Tyranno SA fiber) by dip-coating process. The citric acid-ethylene glycol...
1386
Authors: Janis Andersons, E. Spārniņš
Abstract:Natural fibers of plant origin are finding non-traditional applications as reinforcement of composite materials. The mechanical properties of...
137