Abstract
The microstructure of Barium Aluminum Silicate (BAS)/Silicon Nitride in situ whisker reinforced ceramic matrix composite was examined by X-ray diffraction, transmission electron microscopy, electron diffraction and energy-dispersive X-ray microanalysis. Although we cannot conclusively exclude the presence of orthorhombic BAS, hexagonal BAS and both α-Si3N4 and β-Si3N4 were identified in this material. The crystallization process of the glass phase can be taken almost to completion but a small proportion of residual glass phase is present. Both whiskerlike and equiaxed β-Si3N4 exist in this material.
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Yu, F., Ortiz-Longo, C.R., White, K.W. et al. The microstructural characterization of in situ grown Si3N4 whisker-reinforced barium aluminum silicate ceramic matrix composite. Journal of Materials Science 34, 2821–2835 (1999). https://doi.org/10.1023/A:1004623015929
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DOI: https://doi.org/10.1023/A:1004623015929