Title

Computer Simulation of Final-Stage Sintering: II, Influence of Initial Pore Size

Document Type

Article

Publication Date

10-1990

Publication Title

Journal of the American Ceramic Society

Abstract

A two-dimensional Monte Carlo simulation procedure has been used to investigate the effect of the initial pore size on the microstructural evolution and the kinetics of final-stage sintering. The sintering time scales with r40/Dgb and the grain-growth time scales with r2O/Dm. Pores are found to effectively pin the grain boundaries from the beginning of final-stage sintering at a porosity of Φ= 0.09 until Φ= 0.03. For Φ 0.03, the remaining pores do not effectively retard grain-boundary migration and normal grain growth occurs. Small pores were found to be less effective at retarding grain growth than expected on the basis of a simple grain-growth pinning model. The mean pore size was found to be nearly constant throughout the simulations.

Volume

73

Issue

10

First Page

2865

Last Page

2872

DOI

10.1111/j.1151-2916.1990.tb06687.x

ISSN

1551-2916

Comments

Presented at the 91st Annual Meeting of the American Ceramic Society, Indianapolis, IN, April 23–27, 1989 (Basic Science Division, Paper No. 63-B-89).

Supported by the U. S. Department of Energy (BES), Grant No. DEFG02-87ER 45302 (IWC) and the University of Michigan (GNH and DJS).

Rights Statement

© 1990 by The American Ceramic Society