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Al2O3-platelet reinforced glass matrix composites from a mixture of wastes

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Abstract

Wastes consisting of mining residues from feldspar excavation, lime from fume abatement systems of the glass industry and panel glass from dismantled cathode ray tubes have been converted into an opaque fluorine-containing glass, featuring the precipitation of CaF2 crystals just upon cooling. Fine glass powders were added with Al2O3 platelets (from 5% to 15% by vol.) and viscous flow pressureless sintered at 800 °C for 1 h, leading to dense glass matrix composites. Due the overall mechanical properties, approaching those available for glass–ceramics, coupled with a simple and economical manufacturing procedure, the obtained products could find applications in the building industry and constitute a promising way for the absorption of the investigated wastes.

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Acknowledgements

The authors would like to thank Prof. Giovanni Scarinci (Università di Padova, Dipartimento di Ingegneria Meccanica, settore Materiali) for a very fruitful and stimulating discussion, Roberto Falcone (Stazione Sperimentale del Vetro) and Marzia Zanesco (Università di Padova, Dipartimento di Innovazione Meccanica e Gestionale) for experimental assistance.

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Authors and Affiliations

  1. Dipartimento di Ingegneria Meccanica, settore Materiali, Università di Padova, Via Marzolo 9, 35131, Padova, Italy

    E. Bernardo & R. Castellan

  2. Stazione Sperimentale del Vetro, Via Briati 10, 30121, Murano, Venezia, Italy

    S. Hreglich

Authors
  1. E. Bernardo
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  2. R. Castellan
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  3. S. Hreglich
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Correspondence to E. Bernardo.

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Bernardo, E., Castellan, R. & Hreglich, S. Al2O3-platelet reinforced glass matrix composites from a mixture of wastes. J Mater Sci 42, 2706–2711 (2007). https://doi.org/10.1007/s10853-006-1378-8

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  • DOI: https://doi.org/10.1007/s10853-006-1378-8

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