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Intermediate Stage Processes: Solution-Reprecipitation

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Liquid Phase Sintering

Abstract

During the period when the liquid forms and spreads, rearrangement events happen rapidly. Although solution and reprecipitation of the solid occurs concurrently with rearrangement, the rearrangement events dominate the early response. During the second stage of liquid phase sintering rearrangement ends and solution-reprecipitation processes become dominant. Solution-reprecipitation requires solid solubility in the liquid. It is characterized by grain growth, dissolution of small grains, grain rounding, densification, and development of a rigid skeleton of solid. The two main concerns are with elimination of residual porosity and the concomitant microstructural coarsening. Both processes are interrelated and depend on essentially the same kinetic steps. For this treatment the solution-reprecipitation controlled densification event will be treated independently from microstructural coarsening. The reader is cautioned that this separation of events is artificial and is intended to ease study of liquid phase sintering. Actually, microstructural coarsening occurs simultaneously with solution-reprecipitation controlled densification.

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    Randall M. German

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German, R.M. (1985). Intermediate Stage Processes: Solution-Reprecipitation. In: Liquid Phase Sintering. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-3599-1_5

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  • DOI: https://doi.org/10.1007/978-1-4899-3599-1_5

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