212 M. Verdenelli et al / Journal of the European Ceramic Society 23(2003)1207-1213 5 um 1 um 1 Fig. 7. Scanning electron micrographs of the cross-section(a, b)and the surface(c)of the coated fibres annealed at 1200C in the aiFig. 7. Scanning electron micrographs of the cross-section (a,b) and the surface (c) of the coated fibres annealed at 1200
C in the air. 1212 M. Verdenelli et al. / Journal of the European Ceramic Society 23 (2003) 1207–1213