Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1460495 | Ceramics International | 2014 | 4 Pages |
Abstract
In this study, pure and Ca-, Mn-, and Zn-doped Y2O3 powders, synthesized by the polymeric precursor method, are sintered by a new laser sintering technique in which a CO2 laser, in continuous mode, is employed as the main heating source. The laser-sintered ceramics show a single crystalline phase and have high relative density (~98% Y2O3:Ca), with a homogeneous and crack-free microstructure. When excited with X-rays, the samples present identical radioluminescence (RL) emission spectra, with a band centered at 495 nm. This emission is thought due to the presence of self-trapped excitons (STE).
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Tiago Cordeiro de Oliveira, Marcelo Souza da Silva, Lilian Menezes de Jesus, David Vieira Sampaio, Jerre Cristiano Alves dos Santos, Natalilian Roberta da Silva Souza, Ronaldo Santos da Silva,