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Microstructure and mechanical properties of silicon carbide fibre-reinforced aluminium nitride composite

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Abstract

SiC continuous fibre (15 vol%)/AlN composite was fabricated using a sintering additive of 4Ca(OH)2 · Al2O3 by hot-pressing at 1650 °C and 17.6 MPa in vacuum. Analytical transmission electron microscopy and scanning electron microscopy were used to investigate the microstructure of as-fabricated and crept SiC fibre/AlN composites. The room-temperature mechanical and high-temperature creep properties of the composite were investigated by four-point bending. The incorporation of SiC fibre into AlN matrix improved significantly the room-temperature mechanical properties. This improvement could result from the crack deflections around the SiC fibres. However, the incorporation degraded severely the high-temperature creep properties under oxidizing atmosphere. This could be attributed to the development of the pores and various oxides at the matrix grain boundary and matrix/fibre interface during creep test.

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Authors and Affiliations

  1. Department of Materials Engineering, Chung-ju National University, Chungju, South Korea

    K. Park

  2. Department of Chemical and Nuclear Engineering, University of Massachusetts, 01854, Lowell, MA, USA

    T. Vasilos

Authors
  1. K. Park
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  2. T. Vasilos
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Park, K., Vasilos, T. Microstructure and mechanical properties of silicon carbide fibre-reinforced aluminium nitride composite. J Mater Sci 31, 5463–5469 (1996). https://doi.org/10.1007/BF01159318

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  • DOI: https://doi.org/10.1007/BF01159318

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