Abstract
Luminescence and sintering characteristics of α-Al2O 3-tetragonal zirconia [t-ZrO2(Y2O3)] mixtures have been investigated. The pseudoboehmite is one of the main precursors of the α-alumina. In this investigation pseudoboehmite has been synthesized through a desulphatation of the commercial Al2(SO 4)3 using an ammonia solution. Tetragonal zirconia powders were added in adequate proportion for each composition. The mixture constituted by Al2O3 (pseudoboehmite) and t-ZrO2 has been annealed at different temperatures to obtain the crystalline phases. XRD and SEM techniques measurements have been used to structural characterization. Photoluminescence (PL) emission spectra of Al2O3-ZrO 2 composites were performed at room temperature. Thermoluminescent emission spectrum of the samples was obtained and analyzed.
Original language | English |
---|---|
Pages (from-to) | 465-467 |
Number of pages | 3 |
Journal | Radiation Measurements |
Volume | 45 |
Issue number | 3-6 |
DOIs | |
State | Published - Mar 2010 |
Externally published | Yes |
Keywords
- AlO-ZrO composites
- Photoluminescence
- Pseudoboehmite
- Thermoluminescence