Densification Modelling Studies on Porous Al2O3 Component

J.Lu,
 
J.Ma
 

Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2010, #03/04
http://www.materials.kiev.ua/article/1527

Abstract

A model for sintering of porous ceramic material is applied to study the densification behavior of a porous Al2O3 system that contains pores of different sizes. In the model, a sintering potential associated with the shrinkage of large macropores is considered separately from that of small pores. The predictions from the model are found to be in good agreement with the experimental data. The results show that consideration of the shrinkage of large macropores, which is traditionally assumed to be very stable, provides a more accurate prediction results for the densification of a multi-porous body.


AL2O3, CONSTITUTIVE MODEL, MACROPORES, POROSITY, SINTERING