Combining Optical Transmittance and Enhanced Fracture Toughness in Fiber Reinforced Glass

Peer Fehling, Dagmar Huelsenberg, Kathrin Weise, Marco Winkler, Klaus Nestler, Sabine Stoeckel, Guen

In this study glass composites of different glasses containing nanocrystalline NextelTM filaments are
described. The usefullness of special single (C, SnO2, TiO2, BN) and double (C/SnO2, BN/TiO2) fiber coatings, deposited by CVD, to enhance the fracture toughness is investigated. The single (C, BN) and double (C/SnO2, BN/TiO2) layers prevent intermingling of filaments and matrix during hotpressing and enable fiber sliding or crack deflection for the fracture energy dissipation. A combination of enhanced fracture toughness and optically translucency was achieved for a N-SK4/TiO2/BN/ Nextel 440 composite.

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