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TEM study of reaction-sintered zirconia-mullite composites with CaO and MgO additions

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Abstract

The microstructural and phase evolution, which leads to final zirconia-mullite tough ceramic composites by using reaction sintering of zircon-alumina mixtures with MgO and CaO as additives, has been investigated by electron microscopy and microanalysis. The results confirm that the reaction, in a first stage, produces zirconia inside an amorphous matrix as well as saphirine and spinel for MgO and anorthite for CaO additions respectively. Finally the glassy phase distribution, the mechanical behaviour and the microstructure of the final reaction sintered compacts are comparatively discussed.

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Author notes

  1. J. Ma Rincon

    Present address: Instituto de Cerámica y Vidrio, CSIC, Madrid, Spain

Authors and Affiliations

  1. Instituto de Cerámica y Vidrio, CSIC Arganda, Madrid, Spain

    P. Miranzo, P. Pena, S. De Aza, J. S. Moya & G. Thomas

  2. Materials Science and Mineral Engineering, University of California, Berkeley, California, USA

    J. Ma Rincon

Authors
  1. P. Miranzo
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  2. P. Pena
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  3. S. De Aza
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  4. J. S. Moya
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  5. J. Ma Rincon
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  6. G. Thomas
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Miranzo, P., Pena, P., De Aza, S. et al. TEM study of reaction-sintered zirconia-mullite composites with CaO and MgO additions. J Mater Sci 22, 2987–2992 (1987). https://doi.org/10.1007/BF01086502

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  • DOI: https://doi.org/10.1007/BF01086502

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