Characterization of Si3N4 Powders

Abstract

High technology ceramics based on Si3N4 are manufac—tured by sintering high pure and fine grained Si3N4 powders at high temperatures and pressures. Chemical composition, phase distribution and physical properties of the Si3N4 powder partides are characterized in respect to their sinering behaviour which determines the microstructure as well as the bulk prop—erties of the sintered materials. Impurities, α/ß ratio and crystallinity, size, shape and microstructure of primary and secondary particles are analyzed. © 1987 IUPAC