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A Pseudoternary Phase Diagram of the BaO-ZrO2-ScO1.5 System at 1600 °C and Solubility of Scandia into Barium Zirconate

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Abstract

A pseudoternary phase diagram of the BaO-ZrO2-ScO1.5 system was established at 1600 °C, and solubility of scandia into barium zirconate was determined. According to the phase diagram, the solubility of scandia into barium zirconate at 1600 °C is 0.29 in a mole fraction of scandia ( \( X_{{{\text{ScO}}_{{1.5}} }} \)) on the composition line where the mole fraction of barium oxide is 0.50. However, the solubility of scandia into barium zirconate is reduced with decreasing temperature and lies in between \( X_{{{\text{ScO}}_{{1.5}} }} \) = 0.10 and 0.20 at 1300 °C.

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Acknowledgments

This study was supported by Industrial Technology Research Grant Program in 2006 from New Energy and Industrial Technology Development Organization (NEDO) of Japan. We also express our deep acknowledgement to Daiichi Kigenso Kagaku Kogyo Co., Ltd and Pacific Metals Co., Ltd for the supply of zirconia powder and scandia powder, respectively.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Kyoto University, Yoshida-Hommachi, Kyoto, 606-8501, Japan

    Susumu Imashuku, Tetsuya Uda, Tetsu Ichitsubo, Eiichiro Matsubara & Yasuhiro Awakura

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  1. Susumu Imashuku
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  2. Tetsuya Uda
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  3. Tetsu Ichitsubo
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  4. Eiichiro Matsubara
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  5. Yasuhiro Awakura
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Correspondence to Susumu Imashuku.

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Imashuku, S., Uda, T., Ichitsubo, T. et al. A Pseudoternary Phase Diagram of the BaO-ZrO2-ScO1.5 System at 1600 °C and Solubility of Scandia into Barium Zirconate. J Phs Eqil and Diff 28, 517–522 (2007). https://doi.org/10.1007/s11669-007-9202-y

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  • DOI: https://doi.org/10.1007/s11669-007-9202-y

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