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Partially stabilized ZrO2 particle-MoSi2 matrix composites

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Abstract

A 30 vol % partially stabilized ZrO2 particle-MoSi2 matrix composite was synthesized by hot pressing to 96% theoretical density at 1700°C. No chemical reactions between the PSZ and MoSi2 were observed after hot pressing, indicating thermodynamic stability of these species. The composite formed an adherent and coherent glassy-appearing oxidation layer after oxidation at 1500°C. The room temperature indentation fracture toughness of the composite was 2.5 times that of pure MoSi2. These results demonstrate the feasibility of PSZ particle-MoSi2 matrix composites.

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Authors and Affiliations

  1. Materials Science and Technology Division, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA

    J. J. Petrovic & R. E. Honnell

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  1. J. J. Petrovic
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  2. R. E. Honnell
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Petrovic, J.J., Honnell, R.E. Partially stabilized ZrO2 particle-MoSi2 matrix composites. J Mater Sci 25, 4453–4456 (1990). https://doi.org/10.1007/BF00581107

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  • DOI: https://doi.org/10.1007/BF00581107

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