Properties of AIN/BN composite fabricated through a chemical process and its pressureless sintering

Abstract

AIN powders coated with nano-sized BN precursor were prepared by a chemical route. The powders were reduced in H₂ and hot-pressed to fabricate AIN/BN nanocomposites. As expected from the rule of composites, Young’ s modulus decreased with increasing BN content, the strength of the nanocomposites was significantly improved, compared with the conventional AIN/BN composites. Furthermore, the nanocomposites exhibited the excellent machinability.