Solid state sintering models

W.S. Coblenz, J.M. Dynys, R.M. Cannon, and R.L. Coble. Initial stage solid-state sintering models A critical analysis and assessment. In G. C. Kuczynski, editor, Proceedings of the Fifth International Conference on Sintering and Related Phenomena, pages 141-157, New York, 1980. Plenum Press. 

Koblenz, W. S., Dynys, J. M., Cannon, R. M. and Coble, R. L., Initial stage solid state sintering models. A critical analysis and assessment, in Sintering Processes, Mater. Sci. Res., Vol. 13, Plenum Press, New York, 141-57, 1980. 

Many different mechanisms have been proposed in the literature for the agglomeration of bed particles. Viscous flow sintering of liquid silicates, reactive liquid sintering of molten salt systems, chemical reaction sintering by formation of new compounds, solid state sintering and vaporisation followed by re-condensation have been reported by several investigators Chemical equilibrium models have... 

Typically a solid-state sintered ceramic is an opaque material containing some residual porosity and grains that are much larger than the starting particle sizes. On the basis of the discussion and models just presented, it is useful to summarize the more important factors that control sintering. Implicit in the following arguments is that theoretical density is desired. 

Ferrites are complex because they combine two complex areas ceramic microstructures and magnetic phenomena. Ceramic microstructures, formed as a result of physico-chemical processes such as solid-state sintering, are affected by a large number of interacting variables the essentially quantum-mechanical nature of their magnetic properties makes them difficult to comprehend, since they are entirely different to macroscopic, every-day experience. The approach to ferrites their synthesis/fabrication the relationship between crystal structure, texture and physical properties the modelling of magnetic interactions, is of necessity interdisciplinary. 

Maximemko, A.L. and Olevsky, E.A. (2004) Effective diffusion coefficients in solid-state sintering, Acta Mater. 52, 2953. An example of the use of computer modeling to analyze the role of different diffusion processes in the various stages of sintering. 

Fig. 5.27 Schematic diagrams of the idealized two-sphrae model showing microstiuctural characteristics of a solid-state sintering and b liquid-phase sintering. Reproduced with permission from [1]. Copyright 2003, CRC Press...

Figure 10.1 Sketch of an idealized two-sphere model comparing the microstructural aspects of (a) solid-state sintering with (b) liquid-phase sintering.

Shi JL. Solid state sintering of ceramics pore microstructure models, densification equations and applications. J Mater Sci. 1999 34 3801-3812. DOI 10.1023/A 1004600816317... 

R.L. Coble. Sintering crystalline solids I. Intermediate and final state diffusion models. J. Appl. Phys., 32(5) 787, 1961. 

Coble R L 1961 Sintering crystalline solids. I, intermediate and final state diffusion models J. Appl. Phys. 32 787-92... 

Coble RL (1961) Sintering crystalline solids. 1. Intermediate and final state diffusion model. J Appl Phys 32 787-793... 

Describe (qualitatively) and mathematically model (quantitatively) morphological evolution processes in solid-state materials such as coarsening, grain growth, and sintering. 

Sintering of metals loaded on a support also leads to deactivation, for example, with Pt/alumina catalysts used in the reforming of hydrocarbons. The phenomenon has been modeled in mathematical terms by Elynn and Wanke [1974, 1975] and by Riickenstein and Pulvermacher [1973] and reviewed by Dadyburjor [1987]. The whole field of solid-state transformations was... 

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