Theory for Sintering in Temperature Gradients: Role of Long-Range, Mass Transport |
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| Authors: | Alan W. Searcy |
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| Affiliation: | Materials and Molecular Research Division, Lawrence Berkeley Laboratory and Department of Materials Science and Mineral Engineering, University of California, Berkeley, California 94720 |
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| Abstract: | For a one-component crystalline solid, the driving force for diffusion in a temperature gradient by any path is the gradient in the equilibrium vapor pressure. A When transport is limited by a surface step, the driving force is the difference in vapor pressures at the extremes of the temperature gradients. Sample calculations suggest that temperature gradients are important in driving densification during fast firing and probably are important during conventional firing. |
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