Ultrafast preparation of Al2O3-ZrO2 multiphase ceramics with eutectic morphology via flash sintering

Herein, Al2O3-ZrO2 multiphase ceramics with a eutectic molar ratio were prepared using the flash sintering technique at 1200 degrees C in 2 min. The samples were divided into two regions according to the microscopic morphology: multiphase ceramics zone and eutectic ceramics zone. The multiphase ceramics zone uniformly distributed irregular Al2O3 and ZrO2 phases. The eutectic zone presented typical eutectic morphology, where different morphologies of ZrO2 was uniformly embedded in the Al2O3 matrix, mainly showing fine lamellar, rodlike and irregular network morphology. Overall, flash sintering is a promising route to prepare high-performance multiphase ceramics.

Automated summary

In this study, Al2O3-ZrO2 multiphase ceramics were prepared using flash sintering technique, showing promising potential for high-performance ceramics. The samples were divided into multiphase ceramics zone and eutectic ceramics zone based on their microscopic morphology.