Mechanical Properties of Sintered Alumina Ceramics Prepared from Wet Jet Milled Slurries

摘要

Green density of the samples prepared from wet-jet milled slurries was much higher than that of the samples prepared from conventional ball milled slurries indicating that the former method results in closer packing of particles.Due to this close packing,ceramics could be sintered at a lower temperature with little grain growth.Furthermore,ceramics densified to 97% of its theoretical density at 1450°C had a 3-point bending strength of 733 MPa,which is equivalent to that of the Al2O3 ceramics prepared by pressure assisted sintering.Wet-jet milling method works well for the dispersion of the particles before molding them into green bodies.