M. Kusunoki et al., INSITU OBSERVATION OF ZIRCONIA PARTICLES AT 1200-DEGREES-C BY HIGH-RESOLUTION ELECTRON-MICROSCOPY, Journal of the American Ceramic Society, 76(3), 1993, pp. 763-765
Zirconia (ZrO2) particles (average diameter, 30 nm) were observed in a
n in situ heating experiment up to 1200-degrees-C using a 400-kV high-
resolution electron microscope. Thermal vibration of atoms on a (001)
surface plane was observed at 1100-degrees-C. At 1200-degrees-C, grain
growth and sintering phenomena were recorded on a videotape, showing
(100) lattice planes migrating on a surface of a particle. Direct obse
rvation of the sintering process on a lattice level was accomplished f
or the first time.