Abstract
Nine kinds of glass-ceramic matrix composites with different compositions and interfacial strength (τ s) were prepared. The influence of τ s on the fracture toughness(K 1c) of composites was studied. It was discoved that, for the system no chemical reaction taking place at the interface, K 1c increased proportionally with τ s increasing at the first stage, then decreased when τ s reached a certain value. According to this result, a model of relationship between τ s, thermal mismatch (Δα r) and K 1c was built up. If a chemical reaction took place and a new phase was formed in the interface, the K 1c of composite was effected by the combination of τ s, chemical bonding, radial interfacial stress and other factors.
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References
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Project supported by the National Natural Science Foundation of China
Synopsis of the first author Wang Lingsen, professor, born in 1938, current research field: special ceramic and ceramic matrix composite, etc.
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Wang, L., Liu, R., Zang, J. et al. Influence of interfacial strength on the fracture toughness of glass-ceramic matrix composites. J Cent. South Univ. Technol. 4, 1–4 (1997). https://doi.org/10.1007/s11771-997-0018-z
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DOI: https://doi.org/10.1007/s11771-997-0018-z