Sintering behaviour of powder compacts with multiheterogeneities |
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| Authors: | Chun-Hway Hsueh |
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| Affiliation: | (1) Department of Materials Science and Mineral Engineering, University of California, 94720 Berkeley, California, USA |
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| Abstract: | The sintering behaviour of a powder compact containing uniformly distributed heterogeneities has been analysed. The results reveal a strong retardation of sintering in the presence of non-sinterable agglomerates, due to the development of a uniform hydrostatic tensile stress in the powder matrix. The variation in stresses and sintering rate depends strongly on the total volume fraction of heterogeneities especially when the volume fraction is small, but is insensitive to the actual number of heterogeneities. Specific results are calculated using densification and deformation laws pertinent to Al2O3. |
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