Effect of Mechanical Activation on the in situ Synthesis of Aluminosilicates in the BN- Al₂O₃–SiO₂–Si₃N₄

Abstract

The paper examines how mechanical activation influences the in-situ phase formation of aluminosilicates in the BN–Al₂O₃–SiO₂–Si₃N₄ system. The major factor that influences the activation of the charge is the duration of high-energy machining. Results from infrared spectroscopy and data on the particle size and specific surface of the charge show that short-term (10–20 min) attritor grinding is sufficient to obtain a mixture and composite of high quality.