Ganesh, Ibram ; Reddy, Gundala Jaganatha ; Sundararajan, Govindan ; Olhero, Susana M. ; Torres, Paula M. C. ; Ferreira, José M. F. (2011) Hydrolysis-induced aqueous gelcasting of magnesium aluminate spinel International Journal of Applied Ceramic Technology, 8 (4). pp. 873-884. ISSN 1546-542X
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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1744-...
Related URL: http://dx.doi.org/10.1111/j.1744-7402.2010.02520.x
Abstract
This paper reports on the synthesis of magnesium aluminate spinel (MAS) powders and consolidation of MAS ceramics by hydrolysis-induced aqueous gelcasting (GCHAS). The MAS powders surface passivated against hydrolysis were dispersed in an aqueous-organic premix solution using suitable dispersants. The consolidation of green bodies occurred under ambient conditions by adding a polymerization initiator, a catalyst, and AlN (0-4.06 wt%) as a cosetting agent. Green samples with exceptionally high green strength (~21 MPa) were obtained in the presence of 4.06 wt% AlN. Sintered (1650°C, 1 h) MAS ceramics consolidated by GCHAS exhibited mechanical properties that are comparable to those consolidated by dry pressing.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons. |
| ID Code: | 54350 |
| Deposited On: | 11 Aug 2011 11:10 |
| Last Modified: | 11 Aug 2011 11:10 |
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