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    • Preparation and characterization of silicon nitride-silicon carbide composites

      N Kishan Reddy J Mukerji

      Volume 13 Issue 3 June 1990 pp 173-178

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/013/03/0173-0178

    • Keywords

       

      Silicon nitride-silicon carbide composites; modulus of rupture; coefficient of thermal expansion

    • Abstract

       

      Silicon nitride-silicon carbide (Si3N4-SiC) composites were prepared by varying the percentage of silicon nitride at temperatures of 1350 to 1450°C. The mechanical and thermal properties of these composites were determined. The modulus of rupture of the composites increases with increase of temperature whereas the thermal expansion decreases. Composites with 10% and 50% Si3N4 have modulus of rupture of 49 and 86 MPa at 1400°C and thermal expansion coefficients (25°–1000°C) of 4·4 × 10−6 and 3·2 × 10−6°C−1 respectively.

    • Author Affiliations

       

      N Kishan Reddy1 J Mukerji1 2

      1. Indian Institute of Chemical Technology, Hyderabad - 500 007, India
      2. Central Glass and Ceramic Research Institute, Calcutta - 700 032, India

    • Dates

       
      Published
      June 1990
      Manuscript received
      21 August 1989
      Manuscript revised
      15 December 1989

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