| Autor: | Yuan Run-zhang, Gao Ling, Yang Haitao, Yang Guotao |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Materials science
Fabrication Magnesium Mechanical Engineering Mineralogy chemistry.chemical_element Sintering law.invention chemistry.chemical_compound chemistry Silicon nitride Chemical engineering Mechanics of Materials law visual_art Phase (matter) X-ray crystallography visual_art.visual_art_medium General Materials Science Ceramic Crystallization |
| Zdroj: | Journal of Materials Science. 34:2875-2878 |
| ISSN: | 0022-2461 |
| Popis: | This paper deals with the crystallization of MgO during sintering of Si3N4-MgO-CeO2 ceramics. At the initial stage of sintering (1450–1550°C), MgO-CeO2 reacts with free silica to form sufficient liquid phase to densify Si3N4 into nearly full density ceramics; at final stage (1600–1800°C), the crystallization of MgO reduces the amount of glassy phase which is harmful to the high-temperature properties. MgO-CeO2 is found to be an excellent sintering aid for Si3N4. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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