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Solution-Based Processing of Sc2O3 Nanopowders Yielding Transparent Ceramics

  • Ji-Guang Li (a1), Takayasu Ikegami (a1) and Toshiyuki Mori (a1)

Abstract

A basic sulfate precursor [Sc(OH)SO4·2H2O] for well-sinterable Sc2O3 powders was precipitated from mixed solutions of scandium nitrate [Sc(NO3)3] and ammonium sulfate [(NH4)2SO4] at room temperature and which was subsequently converted to Sc2O3 via dehydroxylization and desulfurization at temperatures ≥900 °C. With the reactive powders synthesized in this work, polycrystalline Sc2O3 ceramics showing high inline transmittances of approximately 70% in the visible wavelength region (corresponding to ∼90% of the theoretical value of single crystals) have been fabricated via vacuum sintering at a relatively low temperature of 1700 °C.

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a)Address all correspondence to this author. e-mail: LI.Jiguang@nims.go.jp

References

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Keywords

Solution-Based Processing of Sc2O3 Nanopowders Yielding Transparent Ceramics

  • Ji-Guang Li (a1), Takayasu Ikegami (a1) and Toshiyuki Mori (a1)

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