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Pyrocarbon anisotropy as measured by electron diffraction and polarized light

Published online by Cambridge University Press:  31 January 2011

Xavier Bourrat ,
Béatrice Trouvat ,
Guillaume Limousin ,
Gérard Vignoles  and
François Doux
Xavier Bourrat
Affiliation:
Laboratoire des Composites Thermosructuraux (UMR 5801 CNRS-SNECMA-CEA-UB1), Université Bordeaux 1, 3 Allée La Boétie, F-33 600 Pessac, France
Béatrice Trouvat
Affiliation:
Laboratoire des Composites Thermosructuraux (UMR 5801 CNRS-SNECMA-CEA-UB1), Université Bordeaux 1, 3 Allée La Boétie, F-33 600 Pessac, France
Guillaume Limousin
Affiliation:
Laboratoire des Composites Thermosructuraux (UMR 5801 CNRS-SNECMA-CEA-UB1), Université Bordeaux 1, 3 Allée La Boétie, F-33 600 Pessac, France
Gérard Vignoles
Affiliation:
Laboratoire des Composites Thermosructuraux (UMR 5801 CNRS-SNECMA-CEA-UB1), Université Bordeaux 1, 3 Allée La Boétie, F-33 600 Pessac, France
François Doux
Affiliation:
SNECMA, BP 37, F-33 165 Saint Médard-en-Jalles cedex, France
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Extract

This work deals with the measurement of pyrocarbon anisotropy on very thin fiber coatings used to control the interfacial behavior in carbon/carbon composites. Differentiation of the various pyrocarbons was performed through computerized image analysis of the electron diffraction patterns by measuring the azimuth opening of the carbon 002 diffraction arcs. This orientation angle decreases when the texture switches from rough to smooth laminar. The relationship with the polarized light measurement technique at a lower resolution is discussed.

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Articles
Information
Journal of Materials Research , Volume 15 , Issue 1 , January 2000 , pp. 92 - 101
Copyright
Copyright © Materials Research Society 2000

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