Record number :
1040127
Title of article :
Guest editorial
Author/Authors :
Yves Rémond، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
2
From page :
351
To page :
352
Abstract :
SiC fibres are a complex system of heterogeneous nanophases. We used Raman microspectrometry to monitor the chemical changes of carbon phases and SiC nanocrystals in such fibres submitted to an alkali and oxidant environment (modelled by molten NaNO3). Specific study of Nicalon-NLM®, Tyranno SA3® and Sylramic® fibres allowed to evidence that surface and volume properties are different. Chemical and/or strain gradients change during corrosion. The important reactivity of the fibre’s core is supposed to be linked to the easy intercalation of Na+ ions, which accelerates the oxidant species diffusion. Singular areas that were hardly strained during microindentation tests on SCS-6® fibres (a model for composites with self-healing interfaces like (SiC/C/BN)), were analysed using Rayleigh microspectrometry to determine the surface geometry.
Keywords :
SiC , Nanophase , Fibre , Corrosion , Indentation
Journal title :
COMPOSITES SCIENCE AND TECHNOLOGY
Journal title :
COMPOSITES SCIENCE AND TECHNOLOGY
Serial Year :
2005
Link To Document :
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