Synthesis of nanopowders in supercritical water in a continuous flow reactor
|Ed Lester 1, Helen Hobbs 1, Tadeusz Chudoba 2, Agnieszka Opalińska 2,3, Witold Łojkowski 2, Jun Lee|
1. University of Nottingham, Nottingham, United Kingdom
The synthesis of yttrium aluminium garnet (YAG or Y3Al5O12) has received much attention on account of its use in structural and functional materials. Polycrystalline YAG also has considerable potential as a refractory fibre material. Furthermore YAG displays a cubic crystal structure, which imparts optical isotropy (unlike sapphire). Doping YAG with different trivalent ions changes the optical properties of the doped materials. YAG has also been used in phosphors for scanners and contrast-enhanced display applications. Whether manufacturing YAG for phosphor applications or ceramic fabrication, fine-sized particles with no agglomeration are desirable.
The poster presents the collaborative efforts that have been ongoing between UNIPRESS and The University of Nottingham in the production of doped and non doped Zirconia and YAG nanoparticles.
The paper will describe the various production techniques, the relationship between operating conditions and particle quality, the similarities and differences between the two synthesis techniques, as well as the effect of the raw powders.
Presentation: Poster at COST D30 Final Evaluation Meeting, by Ed Lester
See On-line Journal of COST D30 Final Evaluation Meeting
Submitted: 2007-10-04 17:19 Revised: 2009-06-07 00:44