MATERIALS

SPARK PLASMA SINTERING OF β-SiAlON–BN COMPOSITES

  • 1 National Research Nuclear University MEPhI, Moscow, Russia
  • 2 Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Moscow, Russia

Abstract

Investigated was the spark plasma sintering (SPS) of β-SiAlON/0–30 wt % BN ceramic composites. The raw materials (β- Si5AlON7 and BN powders) were prepared by infiltration-mediated combustion synthesis (CS). Experimentally established were the following process parameters for SPS of composites with high relative density (>95 %) and flexural strength of 250–300 MPa: (a) heating rate 50 deg/min, (b) maximum temperature 1650–1750°C, (c) and holding time 5 min.

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