Reactive Flash Sintering of High-Entropy Oxide (Mg, Co, Ni, Cu, Zn)LiO at Room Temperature.

(Mg, Co, Ni, Cu, Zn)LiO is a type of high-entropy oxide that has high ionic conductivity at room temperature and is used as a solid electrolyte. (Mg, Co, Ni, Cu, Zn)LiO was successfully synthesized from precursor powder by applying reactive flash sintering for less than 4 min at room temperature (25 °C). AC and DC electric fields were independently applied to sinter ceramic samples; consequently, AC and DC electric field application resulted in relative densities that exceeded 90% and 80%, respectively.

Ethanol-Induced Flash Sintering of ZnO Ceramics at Room Temperature.

Ceramic flash sintering with a strong electric field at room temperature is the most attractive method. This paper presents the flash sintering of ZnO ceramics at room temperature by the application of a 3-kV/cm electric field after a dropwise addition of ethanol. This method is simple and easy to control.