This study presents the effects of current density limit on flash sintering and formation nanostructures in undoped ZnO. The combination high electric field low (1 2 A/cm2) results hot spots fracture as well ZnO vicinity spots. Such phenomena were not observed case higher 3 A/cm2. A detailed microscopy analysis revealed that growth initiated from liquid phase regions at grain boundaries within ...

We propose an innovative methodology to quantify the dependence of grain growth with respect current density during flash sintering zirconia (3YSZ) (field set under a nominal limit 150 mA mm−2. This was achieved by using notch (0.5 mm deep and 1.5 wide) located in middle dog-bone specimen, allowing uneven distribution (ranging from 3 670 mm−2) while maintaining fairly homogeneous temperature (1...