Abstract
The sinterability of Y2O3 is sensitively influenced by the doping of cation with the doping amount of 1mol%. For instance, the sintering temperature required for full-densification in Y2O3 can be reduced from 1700C to 1300C by Zn2+-doping. The sinterability of the cation-doped Y2O3 depends on the dopant cation species. High-resolution transmission electron microscope (HRTEM) observations and nano-probe X-ray energy dispersive spectroscopy (EDS) analysis revealed that the doped cation tends to segregate in the vicinity of grain boundaries without forming amorphous layer. The doping effect on the microstructure and high temperature matter transport of the sintered Y2O3 will be discussed.
