Low-Temperature Sintering of Aluminum Oxide

A fine-sized (～0.1 μm), agglomerate-free Al₂O₃ dispersion was used to prepare homogeneous green bodies with ～69% relative density and ～10-nm median pore radius. Samples could be sintered at 1150°C to a relative density >99.5% and an average grain size of 0.25 μm.