A mathematical approach to Ostwald ripening due to diffusion and deformation in liquid bridge

B. Randjelovic, K. Shinagawa, Z. S. Nikolic

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)

抄録

From many experiments with mixtures of small and large grains, it can be concluded that during liquid phase sintering, smaller grains partially dissolve and a solid phase precipitates on the larger grains and grain coarsening occurs. The growth rate can be controlled either by the solid-liquid phase boundary reaction or by diffusion through the liquid phase. The microstructure may change either by larger grains growing during the Ostwald ripening process or by shape accommodation. In this study, two-dimensional mathematical approach for simulation of grain coarsening by grain boundary migration based on a physical and corresponding numerical modeling of liquid phase sintering will be considered. A combined mathematical method of analyzing viscous deformation and solute diffusion in liquid bridge between two grains with different sizes will be proposed. The viscous FE method will be used for calculating meniscus of the liquid bridge, with the interfacial tensions taken into consideration. The FE method for diffusion will be also implemented by using the same mesh as the deformation analysis.

本文言語英語
ページ(範囲)261-271
ページ数11
ジャーナルScience of Sintering
45
3
DOI
出版ステータス出版済み - 2013
外部発表はい

All Science Journal Classification (ASJC) codes

  • セラミックおよび複合材料
  • 凝縮系物理学
  • 金属および合金
  • 材料化学

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