Udhayabanu, V. ; Murty, B. S. (2011) Synthesis of nanocrystalline α-Al2O3 from nanocrystalline boehmite derived from high energy ball milling of gibbiste Transactions of the Indian Institute of Metals, 64 (6). pp. 535-540. ISSN 0019-493X
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Official URL: https://link.springer.com/article/10.1007/s12666-0...
Related URL: http://dx.doi.org/10.1007/s12666-011-0086-5
Abstract
Dry milling of gibbsite has been carried out for 5 h in planetary ball mill to study the effect of mechanical activation on α-Al2O3, formation. Gibbsite undergoes phase transformation during milling and has resulted nanocrystalline boehmite after 5 h of milling. The average crystallite size and the BET surface area of the nanocrystalline boehmite resulted by 5 h milling of gibbsite are 8 nm and 140 m2/g, respectively. The nanocrystalline boehmite has shown reduction in the α-Al2O3 formation temperature as well as in the activation energy of α-Al2O3, formation. The average crystallite size of nanocrystalline boehmite derived α-Al2O3 is measured to be 100 nm by TEM analysis and the BET surface area of resulted nanocrystalline α-Al2O3 is 12 m2/g.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Springer Verlag. |
| Keywords: | Ceramics; Kinetics; Electron Microscopy; Electronic Materials; Nanomaterials; X-ray Techniques |
| ID Code: | 110878 |
| Deposited On: | 06 Dec 2017 11:00 |
| Last Modified: | 06 Dec 2017 11:00 |
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