Crystal plane evolution of grain oriented alumina ceramics with high transparency

Abstract: Transparent alumina ceramics with oriented grains were successfully prepared by slip casting under an assisted magnetic field and sintering at 1850°C for 5h in vacuum. In-line transmittance of the alumina ceramic shaped under 12T reaches as high as 70.3% at 600nm. Detailed crystal plane evolution of grain oriented alumina ceramics with the assistance of different magnitude magnetic field was studied by XRD characterization. The results indicate that complete textured structure could only be realized with a magnetic field strength above 12T. Furthermore, the grain microstructure was observed by optical microscope in different directions. [Copyright &y& Elsevier]