Effect of mechanical activation on the in situ synthesis of aluminosilicates in the BN-Al2O3-SiO2-Si3N4 system

Abstract

The paper examines how mechanical activation influences the in-situ phase formation of aluminosilicates in the BN-Al 2 O 3 -SiO 2 -Si 3 N 4 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.

Thermal Shock Behavior of Si3N4/BN Fibrous Monolithic Ceramics

“…Presently, Si 3 N 4 -BN composite ceramics derive from methodologies such as atmospheric pressure sintering, reaction sintering, hot pressing sintering, and spark plasma sintering (SPS) [9][10][11][12][13][14]. Though atmospheric pressure and reaction sintering yield ceramics with compromised densities and defect ratios, spark plasma sintering, albeit efficient, is constrained by its infancy stage, complexity, and prohibitive costs.…”