| Synthesis and Characterization of Yttria Nanopowders
by Precipitation Method |
Mohammad Khajelakzay*, Reza Shoja Razavi and Masoud Barekat
pages : 208-212
DOI : 10.1080/0371750X.2015.1089189 |
| Abstract |
| In this investigation, yttria nanopowder was synthesized by precipitation method using yttria micro powder and
ammonium hydrogen carbonate as precursor materials. The most important parameters, aging time and calcination
temperature, have been reviewed in detail. The effects of aging time (3, 6, 12 and 24 h) and calcination temperature
(700o, 800o, 900o, 1000o and 1100oC) were studied. Disk samples were fabricated from nanopowder at 1800oC and 50
Mpa via SPS method. Synthesized phases, thermal behaviour and particle size were shown by X-ray diffraction
pattern, thermogravimetry and differential thermal analysis, and field emission scanning electron microscopy,
respectively. Fourier transform infrared spectroscopy was used for bonding study before and after heat treatment
at different temperatures. |
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