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Solution-Based Processing of Sc2O3 Nanopowders Yielding Transparent Ceramics

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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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Authors and Affiliations

  1. Advanced Materials Laboratory, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki, 305-0044, Japan

    Ji-Guang Li, Takayasu Ikegami & Toshiyuki Mori

Authors
  1. Ji-Guang Li
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  2. Takayasu Ikegami
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  3. Toshiyuki Mori
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Correspondence to Ji-Guang Li.

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Li, JG., Ikegami, T. & Mori, T. Solution-Based Processing of Sc2O3 Nanopowders Yielding Transparent Ceramics. Journal of Materials Research 19, 733–736 (2004). https://doi.org/10.1557/jmr.2004.19.3.733

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  • DOI: https://doi.org/10.1557/jmr.2004.19.3.733

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