| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
Processing of Transparent and Luminescent Alumina Polycrystalline Ceramics Doped with Various Rare Earth Elements and Transition Metals |
| Author(s) |
Karel Maca, Katarina Drdlikova, Daniel Drdlik, Robert Klement, Dusan Galusek |
| On-Site Speaker (Planned) |
Karel Maca |
| Abstract Scope |
A new processing method for preparation of transparent doped alumina polycrystalline ceramics has been developed and the luminescent properties of these ceramics were evaluated. The processing method is based on proper treatment of dopants combined with novel pressure-less pre-sintering followed by Hot Isostatic Pressing. The dopants under investigation were various rare earth elements (Eu, Er, Nd, Tb, Dy) and transition metals (Cr, Mn). The final products were characterized in terms of real in-line transmission, photoluminescence in visible and NIR spectral region, and also by hardness measurement. In case of Eu-doped and Dy-doped aluminas the RIT exceeded 55% which is unique compared to the results published so far. The combination of superior optical, luminescent and mechanical (Vickers hardness exceeded 25 GPa) properties makes these materials a promising candidate for number of hi-tech applications. |