Microstructure of Pressureless Sintered h-BN

Abstract

Microstructure of pessureless sintered bodies of h-BN fabricated using an activated powder by mechanochemical treatments has been examined by SEM and TEM observations. The BN compacts obtained by the pressurless sintering showed three dimensionally bonded network structure consisted of platy BN microcrystals. The interconnected regions between two particles are continuous in microstructure without any orientational relationship between them. The interconnected network, which would improve properties of BN bodies, was characterized for the pressureless sintered bodies.