| Autor: |
Ediana Gambin, Rosa Maria da Rocha, Fernanda P. Santos, Cristina Moniz Araujo Lopes |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
Materials Science Forum. 820:172-177 |
| ISSN: |
1662-9752 |
| Popis: |
Tape casting process was used to produce Al2O3 substrates in an aqueous system with acrylic latex emulsion as binder. The present work studied the slurry formulations in aqueous medium of Al2O3 powders with different particle size distribution and made correlation to the green and sintered tapes. Two commercial alumina powders, one sub-micrometric and other micrometric were used. Compositions of Al2O3 slurries with 80 and 83 wt% of solids were prepared by dispersing the powders in water with a dispersant with subsequently additions of 7 and 10 wt% of binder. Sub-micrometric Al2O3 resulted in a high densification tapes regardless solid concentration and binder amount in the slurry, though green density was affected. For micrometric alumina, increasing the solid concentration resulted in a little higher final density. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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