| Autor: |
Veljković I., Poleti D., Karanović Lj., Zdujić M., Branković G. |
| Jazyk: |
angličtina |
| Rok vydání: |
2011 |
| Předmět: |
|
| Zdroj: |
Science of Sintering, Vol 43, Iss 3, Pp 343-351 (2011) |
| Druh dokumentu: |
article |
| ISSN: |
0350-820X |
| DOI: |
10.2298/SOS1103343V |
| Popis: |
Extra phase-pure Li4Ti5O12 spinel with particle sizes less than 500 nm was synthesized by solid state reaction of mechanochemicaly activated mixture of nano anatase and Li2CO3 for a very short annealing time, 4 h at 800°C. Structural and microstructural properties, the mechanism of solid state reaction between anatase and Li2CO3 as well as thermal stability of prepared spinel were investigated using XRPD, SEM and TG/DSC analysis. The mechanism of reaction implies decomposition of Li2CO3 below 250ºC, formation of monoclinic Li2TiO3 as intermediate product between 400 and 600°C and its transformation to Li4Ti5O12 between 600-800ºC. The spinel structure is stable up to 1000ºC when it is decomposed due to Li2O evaporation. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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