Paper Title:
Creep Behaviors of 3D C/SiC in High Speed Combustion Gas at 1300°C
  Abstract

To understand the creep damage mechanism of a standard 3D Carbon fiber reinforced silicon carbide composite (C/SiC) in high temperature combustion gas at 1300 °C, the creep tests were carried out in a combustion wind tunnel and the mechanisms were investigated by the extension of specimens and the microstructure of fracture section. It was found that the external tensile load was bore by the carbon fibers in the active region during the stressed oxidation process. The oxidation mechanisms of the active region were determined by a normalized threshold stress. Below the normalized threshold stress, the oxidation was controlled by internal diffusion of oxidizing gases through microcracks in SiC matrix. Above the normalized threshold stress, the oxidation was controlled by the reaction of carbon fiber with oxygen and water vapor.

  Info
Periodical
Advanced Materials Research (Volumes 143-144)
Edited by
H. Wang, B.J. Zhang, X.Z. Liu, D.Z. Luo, S.B. Zhong
Pages
802-805
DOI
10.4028/www.scientific.net/AMR.143-144.802
Citation
X. G. Luan, L. F. Cheng, "Creep Behaviors of 3D C/SiC in High Speed Combustion Gas at 1300°C", Advanced Materials Research, Vols. 143-144, pp. 802-805, 2011
Online since
October 2010
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Price
$35.00
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