Sintering Behavior of Nanocrystalline CeO_2 by Master Sintering Curve Analysis

摘要

The master sintering curve was applied to nanocrystalline CeO_2 powder compact, and the sintering activation energy was determined to be 0 = 405 ± 40 kJ mol A classical model was applied to the initial sintering region and gave Q = 360 ± 30 kJ mol The difference is attributed to the effect of the sintering driving-force between in initial and total sintering stages of nanocrystalline CeO_2 particles. The MSC model can be used to predict the total densification of present powder compact under time-temperature excursion. It is conducted that the MSC is an integral work of the sintering concept that is useful for modelling the densification of CeO_2.