Synthesis of Scandium Oxide Nano Power and Fabrication of Transparent Scandium Oxide Ceramics |
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| Affiliation: | 1. School of Science, Northeastern University, Shenyang 110004, China;2. School of Materials & Metallurgy, Northeastern University, Shenyang 110004, China;3. School of Materials and Chemical Engineering, Changchun University of Science and Technology, Changchun 130022, China |
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| Abstract: | Synthesis of Sc2O3 nanopowder from scandium sulfate and hexamethylenetetramine (CH2)6N4] using a precipitation method was investigated. Fourier transform infrared spectroscopy combined with differential thermal analysis/thermo-gravimetry analysis showed that chemical composition of the precursor precipitates was (Sc(OH)2.2(SO4)0.04)·0.4H2O. Phase transformation of the precursor precipitated during calcinations was investigated by X-ray diffractometry. A Sc2O3 nanopowder with good dispersion and a mean particle size of 80 nm was obtained by calcining the sulfate precursor at 1100 °C for 4 h. The Sc2O3 nanopowder was sintered into transparent Sc2O3 ceramic by vacuum sintering at 1700 °C for 5 h without any additives. |
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