Micro-Raman stress imaging of ceramic (C, SiC)-fiber-reinforced ceramic-matrix and metal–matrix composites

The high strength and toughness of brittle fiber-reinforced composites result from the conservation of the pristine state of the fiber and from special fiber-matrix interphases. Raman scattering is a unique tool providing information on the structure and short-range order of amorphous, nanocrystalli...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2000-09, Vol.288 (2), p.132-137
Main Authors: Gouadec, G, Colomban, Ph
Format: Article
Language:English
Subjects:
Analysing. Testing. Standards
Anharmonicity
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Chemical Sciences
Composites
Exact sciences and technology
Fibers
General studies
Material chemistry
Metals. Metallurgy
Raman scattering
Strain
Stress
Stress analysis
Technical ceramics
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Summary:The high strength and toughness of brittle fiber-reinforced composites result from the conservation of the pristine state of the fiber and from special fiber-matrix interphases. Raman scattering is a unique tool providing information on the structure and short-range order of amorphous, nanocrystalline or crystalline phases, as well as on the stress level, via the stress-induced wavenumber shift arising from chemical bond anharmonicity. Quantitative results can be obtained by calibrating the fiber wavenumber shift under tensile stress. Examples chosen among (C, SiC) fiber-reinforced ceramic (celsian, mullite) and intermetallic (Ti6242) matrix composites are discussed.
ISSN:0921-5093
1873-4936
DOI:10.1016/S0921-5093(00)00873-X