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Computer Simulation of Final-Stage Sintering: I, Model Kinetics, and Microstructure
Journal of the American Ceramic Society
  • Gregory N. Hassold, Kettering University
  • I-Wei Chen, University of Michigan-Ann Arbor
  • David J. Srolovitz, University of Michigan-Ann Arbor
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A Monte Carlo model for simulating final-stage sintering has been developed. This model incorporates realistic microstructural features (grains and pores), variable surface difusivity, grain-boundary diffusivity, and grain-boundary mobility. A preliminary study of a periodic array of pores has shown that the simulation procedure accurately reproduces theoretically predicted sintering kinetics under the restricted set of assumptions. Studies on more realistic final-stage sintering microstructure show that the evolution observed in the simulation closely resembles microstructures of real sintered materials over a wide range of diffusivity, initial porosity, and initial pore sizes. Pore shrinkage, grain growth, pore breakaway, and reattachment have all been observed. The porosity decreases monotonically with sintering time and scales with the initial porosity and diffusivity along the grain boundary. Deviations from equilibrium pore shapes under slow surface diffusion or fast grain-boundary diffusion conditions yield slower than expected sintering rates.

Presented at the 91st Annual Meeting of the American Ceramic Society, Indianapolis, IN, April 25, 1989 (Basic Science Division, Paper No. 62-B-89).

Supported by the University of Michigan (GNH and DJS) and the U.S. Department of Energy (BES), Grant No. DE-FG02-87ER 45302 (IWC).

Rights Statement

© 1990 by The American Ceramic Society

Citation Information
Gregory N. Hassold, I-Wei Chen and David J. Srolovitz. "Computer Simulation of Final-Stage Sintering: I, Model Kinetics, and Microstructure" Journal of the American Ceramic Society Vol. 73 Iss. 10 (1990) p. 2857 - 2864 ISSN: 1551-2916
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