Microstructural Observations on Hot-Pressed Si3N4
The development of microstructure in hot‐pressed SiaN4 was studiehd for a typical Si3N4 powder with and without BeSiN2 as a densification aid. The effect of hot‐pressing temperature on density, α‐ to β‐Si3N4 conversion and specific surface area showed that BeSiN2 appears to increase the mobility of...
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| Veröffentlicht in: | Journal of the American Ceramic Society 1981-02, Vol.64 (2), p.C-31-C-31 |
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| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | The development of microstructure in hot‐pressed SiaN4 was studiehd for a typical Si3N4 powder with and without BeSiN2 as a densification aid. The effect of hot‐pressing temperature on density, α‐ to β‐Si3N4 conversion and specific surface area showed that BeSiN2 appears to increase the mobility of the system by enhancing densification, α‐ to β‐Si3N4 transformation, and grain growth at temperatures between 1450° and 1800°. These processes appear to occur in the presence of a liquid phase. |
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| ISSN: | 0002-7820 1551-2916 |
| DOI: | 10.1111/j.1151-2916.1981.tb09568.x |