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Title: Mechanical characterization of Si-C(O) fiber/SiC (CVI) matrix composites with a BN-interphase

Abstract

The mechanical behavior of three CVI-processed 2D woven SiC/BN/SiC composite materials with different initial BN interphase thicknesses has been investigated by means of tensile and impact tests. The results have established the efficiency of a BN interphase in promoting a nonlinear/noncatastrophic tensile behavior and high impact resistance. The effect of the initial BN interphase thickness on the resulting mechanical behavior has also been demonstrated. AES and TEM has revealed the presence of a SiO[sub 2]/C double layer at the BN/fiber interface, which might result from a decomposition undergone by the Si-C(O) Nicalon fiber during processing. It has been suggested that the influence of the initial BN interphase thickness on the mechanical properties of the composites results from both changes occurring in the composition and morphology of the interfacial zones and modifications of the interfacial forces due to accommodation of the radial residual clamping stress.

Authors:
; ; ;  [1];  [2]
  1. (Lab. des Composites Thermostructuraux, Pessac (France))
  2. (Univ. de Bordeaux, Talence (France). Lab. de Genie Mechanique de l'IUT A)
Publication Date:
OSTI Identifier:
7046334
Resource Type:
Journal Article
Journal Name:
Journal of the American Ceramic Society; (United States)
Additional Journal Information:
Journal Volume: 77:3; Journal ID: ISSN 0002-7820
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BORON NITRIDES; TENSILE PROPERTIES; COMPOSITE MATERIALS; INTERFACES; MICROSTRUCTURE; SILICON CARBIDES; BORON COMPOUNDS; CARBIDES; CARBON COMPOUNDS; MATERIALS; MECHANICAL PROPERTIES; NITRIDES; NITROGEN COMPOUNDS; PNICTIDES; SILICON COMPOUNDS; 360603* - Materials- Properties; 360602 - Other Materials- Structure & Phase Studies

Citation Formats

Prouhet, S., Camus, G., Labrugere, C., Guette, A., and Martin, E. Mechanical characterization of Si-C(O) fiber/SiC (CVI) matrix composites with a BN-interphase. United States: N. p., 1994. Web. doi:10.1111/j.1151-2916.1994.tb05344.x.
Prouhet, S., Camus, G., Labrugere, C., Guette, A., & Martin, E. Mechanical characterization of Si-C(O) fiber/SiC (CVI) matrix composites with a BN-interphase. United States. doi:10.1111/j.1151-2916.1994.tb05344.x.
Prouhet, S., Camus, G., Labrugere, C., Guette, A., and Martin, E. Tue . "Mechanical characterization of Si-C(O) fiber/SiC (CVI) matrix composites with a BN-interphase". United States. doi:10.1111/j.1151-2916.1994.tb05344.x.
@article{osti_7046334,
title = {Mechanical characterization of Si-C(O) fiber/SiC (CVI) matrix composites with a BN-interphase},
author = {Prouhet, S. and Camus, G. and Labrugere, C. and Guette, A. and Martin, E.},
abstractNote = {The mechanical behavior of three CVI-processed 2D woven SiC/BN/SiC composite materials with different initial BN interphase thicknesses has been investigated by means of tensile and impact tests. The results have established the efficiency of a BN interphase in promoting a nonlinear/noncatastrophic tensile behavior and high impact resistance. The effect of the initial BN interphase thickness on the resulting mechanical behavior has also been demonstrated. AES and TEM has revealed the presence of a SiO[sub 2]/C double layer at the BN/fiber interface, which might result from a decomposition undergone by the Si-C(O) Nicalon fiber during processing. It has been suggested that the influence of the initial BN interphase thickness on the mechanical properties of the composites results from both changes occurring in the composition and morphology of the interfacial zones and modifications of the interfacial forces due to accommodation of the radial residual clamping stress.},
doi = {10.1111/j.1151-2916.1994.tb05344.x},
journal = {Journal of the American Ceramic Society; (United States)},
issn = {0002-7820},
number = ,
volume = 77:3,
place = {United States},
year = {1994},
month = {3}
}