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

L.Vishnyakov,
   
L.Pereselenceva
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2008, #07/08
http://www.materials.kiev.ua/article/1333

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.


ALUMINOSILICATES, BORON NITRIDE, COMPOSITE MATERIAL, INFRARED SPECTROSCOPY, MECHANICAL ACTIVATION, MULLITE, PARTICLE SIZE