Synthesis and luminescent characterization of sol-gel derived zirconia-alumina

T. Rivera, R. Sosa, J. Azorín, J. Zarate, A. Ceja

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15 Scopus citations

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 languageEnglish
Pages (from-to)465-467
Number of pages3
JournalRadiation Measurements
Volume45
Issue number3-6
DOIs
StatePublished - Mar 2010
Externally publishedYes

Keywords

  • AlO-ZrO composites
  • Photoluminescence
  • Pseudoboehmite
  • Thermoluminescence

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