Study of Nicalon-based ceramic fibres and powders by EXAFS spectrometry, X-ray diffractometry and some additional methods
The Nicalon SiC-based ceramic fibres and their precursors have been investigated by complementary techniques: EXAFS, WAXS, ESCA and NMR. For SiC-Nicalon fibres, an alternative model is proposed based on a microcrystalline structure where pureβ-SiC is embedded in a continuum of tetrahedral SiCxOy(x+y=4). We have found that the inorganic material skeleton is already contained in the carbon and silicon structure of the polymer precursor.
KeywordsPolymer Silicon Alternative Model Inorganic Material Additional Method
Unable to display preview. Download preview PDF.
- 1.S. Yajima, K. Okamura andM. Omori,Chem. Lett. 9 (1975) 931.Google Scholar
- 2.S. Yajima, K. Okamura, J. Hayashi andM. Omori,J. Amer. Chem. Soc. 59 (1976) 324.Google Scholar
- 3.C. H. Anderson and R. Warren, “Advances in Composite Materials ICCM 3” Vol.2 (edited by A. R. Bunsellet al.) Pujama (1980) p. 1129.Google Scholar
- 5.G. Simon, Thesis Paris (1984).Google Scholar
- 8.P. Lagarde andA. M. Flank,J. Physique 47 (1986) 1389.Google Scholar
- 12.H. Marsman, “NMR Basic Principles and Progress” No. 17 (edited by P. Diehl, E. Fluck and R. Kosfeld) Springer, Berlin (1981).Google Scholar
- 13.B. Catoire, M. Sotton, G. Simon andA. Bunsell,Polymer 28 (1987).Google Scholar