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

Authors
Gouadec, G Colomban, P
Citation
G. Gouadec et P. Colomban, Micro-Raman stress imaging of ceramic (C, SiC)-fiber-reinforced ceramic-matrix and metal-matrix composites, MAT SCI E A, 288(2), 2000, pp. 132-137
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
288
Issue
2
Year of publication
2000
Pages
132 - 137
Database
ISI
SICI code
0921-5093(20000915)288:2<132:MSIOC(>2.0.ZU;2-B
Abstract
The high strength and toughness of brittle fiber-reinforced composites resu lt from the conservation of the pristine state of the fiber and from specia l fiber-matrix interphases. Raman scattering is a unique tool providing inf ormation on the structure and short-range order of amorphous, nanocrystalli ne or crystalline phases, as well as on the stress level, via the stress-in duced wavenumber shift arising from chemical bond anharmonicity. Quantitati ve results can be obtained by calibrating the fiber wavenumber shift under tensile stress. Examples chosen among (C, SiC) fiber-reinforced ceramic (ce lsian, mullite) and intermetallic (Ti6242) matrix composites are discussed. (C) 2000 Elsevier Science S.A. All rights reserved.