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Synthesis of Si3N4 Powder by Thermal Decomposition of SI(NH)2

  • Silvia Ampuero (a1), Paul Bowen (a1) and Terry A. Ring (a2)

Abstract

A fine white α-Si3N4 powder has been produced by the thermal decomposition of the coprecipitation product of the reaction between SiC14 and NH3. The Cl content, due to a reaction between Si(NH)2 and the NH4Cl by-product during the thermal treatment of the coprecipitate, has been reduced by using an isothermal step at ≈ 250°C in the heat treatment cycle.

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Synthesis of Si3N4 Powder by Thermal Decomposition of SI(NH)2

  • Silvia Ampuero (a1), Paul Bowen (a1) and Terry A. Ring (a2)

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