|
DSpace@nitr >
National Institue of Technology- Rourkela >
Journal Articles >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/2080/41
|
Full metadata record
| DC Field | Value | Language |
|---|
| contributor.author | Behera, S K | - |
| contributor.author | Barpanda, P | - |
| contributor.author | Pratihar, S K | - |
| contributor.author | Bhattacharyya, S | - |
| date.accessioned | 2005-05-20T07:42:12Z | - |
| date.available | 2005-05-20T07:42:12Z | - |
| date.issued | 2004-03 | - |
| identifier.citation | Materials Letters, Vol 58, Iss 9, P 1451-1455 | en |
| identifier.uri | http://hdl.handle.net/2080/41 | - |
| description | Copyright of this article belongs to Elsevier Science Ltd | en |
| description.abstract | Magnesium–aluminium spinel has been synthesized by citrate–nitrate route using hydrated nitrates of Mg and Al as the precursors with a citrate–nitrate ratio of 1:1. Self-ignition of the gel-like mass yielded a black mass, which crystallized to Mag–Al spinel on calcination at 650 °C for 9 h. The crystallized mass was a mixture of ordered and disordered phases of Mag–Al spinel. Phase pure-ordered spinel could be obtained for powders calcined at 1100 °C and above. The green compacts of the spinel powders could be sintered to near theoretical density at 1150 °C for 30 min. The activation energy for densification was calculated (16.4 kcal/mol) assuming Arrhenius type behaviour. The densification mechanism could be assigned to the ordering of the disordered spinel involving vacancy diffusion through the surface. | en |
| format.extent | 215747 bytes | - |
| format.mimetype | application/pdf | - |
| language.iso | en | - |
| publisher | Elsevier | en |
| subject | Autoignition | en |
| subject | Citrate–nitrate gel | en |
| subject | Black ash | en |
| subject | Order–disorder Mag–Al spinel | en |
| title | Synthesis of magnesium–aluminium spinel from autoignition of citrate–nitrate gel | en |
| type | Article | en |
| Appears in Collections: | Journal Articles
|
Files in This Item:
| File |
Description |
Size | Format |
|---|
| bhatta3.pdf | | 210Kb | Adobe PDF | View/Open |
|
Show simple item record
All items in DSpace are protected by copyright, with all rights reserved.
|
