Short Communication: Bn sintered with Al: microstructure and hardness

摘要

Boron nitride (BN) was sintered with Al by high pressure hot pressing while preserving the molar ratio of BN:Al9:1. Ready made samples were additionally annealed at 950 deg.C under pressure, at 3x10~3 Pa for 1 h. The structure of sintered material before and after annealing was studied using transmission electron microscope. From the microscopic observations it could be concluded that the samples prepared both before and after annealing exhibit a compact structure. At the BN-Al interface immediately after pressing, small Crystallites of Al can be observed.