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Journal of Inorganic Materials, Volume. 36, Issue 4, 339(2021)

High Entropy Engineering: New Strategy for the Critical Property Optimizations of Rare Earth Silicates

Luchao SUN1... Xiaomin REN1,2, Tiefeng DU1, Yixiu LUO1, Jie ZHANG1 and Jingyang WANG1,* |Show fewer author(s)
Author Affiliations
  • 11. Advanced Ceramics and Composites Division, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
  • 22. School of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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    HAADF-STEM image of high entropy (Y1/4Ho1/4Er1/4Yb1/4)2- SiO5, EDS mapping of uniform spatial distributions for each element[40]
    1. HAADF-STEM image of high entropy (Y1/4Ho1/4Er1/4Yb1/4)2- SiO5, EDS mapping of uniform spatial distributions for each element[40]

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    Temperature dependent thermal expansion coefficient of high entropy (Y1/4Ho1/4Er1/4Yb1/4)2SiO5[40]
    2. Temperature dependent thermal expansion coefficient of high entropy (Y1/4Ho1/4Er1/4Yb1/4)2SiO5[40]

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    Surface observations of high entropy (Er1/4Tm1/4Yb1/4Lu1/4)2Si2O7 after CMAS corrosion at 1500 ℃ for 4 h (a-b) and 50 h (c-d) [48]
    3. Surface observations of high entropy (Er1/4Tm1/4Yb1/4Lu1/4)2Si2O7 after CMAS corrosion at 1500 ℃ for 4 h (a-b) and 50 h (c-d) [48]

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    Observations of the reaction front in the cross-sections of high entropy (Er1/4Tm1/4Yb1/4Lu1/4)2Si2O7 after CMAS corrosion at 1500 ℃ for 4 h (a,b) and 50 h (c,d)[48]
    4. Observations of the reaction front in the cross-sections of high entropy (Er1/4Tm1/4Yb1/4Lu1/4)2Si2O7 after CMAS corrosion at 1500 ℃ for 4 h (a,b) and 50 h (c,d)[48]

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    (a) XRD patterns of (Gd1/6Tb1/6Dy1/6Tm1/6Yb1/4Lu1/6)2 Si2O7, along with the standard XRD patterns of RE2Si2O7 (RE = Y, Gd, Tb, Dy, Tm, Yb and Lu) and (b) Rietveld refinement of XRD pattern for (Gd1/6Tb1/6Dy1/6Tm1/6Yb1/4Lu1/6)2Si2O7[50]
    5. (a) XRD patterns of (Gd1/6Tb1/6Dy1/6Tm1/6Yb1/4Lu1/6)2 Si2O7, along with the standard XRD patterns of RE2Si2O7 (RE = Y, Gd, Tb, Dy, Tm, Yb and Lu) and (b) Rietveld refinement of XRD pattern for (Gd1/6Tb1/6Dy1/6Tm1/6Yb1/4Lu1/6)2Si2O7[50]

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    (a) SEM image of (Gd1/6Tb1/6Dy1/6Tm1/6Yb1/4Lu1/6)2Si2O7 surface with EDS mappings of Si, Gd, Tb, Dy, Tm, Yb and Lu, (b) STEM high angle annular dark field (HAADF) image and corresponding selected compositional EDS maps of high entropy (Gd1/6Tb1/6Dy1/6Tm1/6Yb1/4Lu1/6)2Si2O7, and (c) schematic diagram of the phase formation of (6RE1/6)2Si2O7[50]
    6. (a) SEM image of (Gd1/6Tb1/6Dy1/6Tm1/6Yb1/4Lu1/6)2Si2O7 surface with EDS mappings of Si, Gd, Tb, Dy, Tm, Yb and Lu, (b) STEM high angle annular dark field (HAADF) image and corresponding selected compositional EDS maps of high entropy (Gd1/6Tb1/6Dy1/6Tm1/6Yb1/4Lu1/6)2Si2O7, and (c) schematic diagram of the phase formation of (6RE1/6)2Si2O7[50]

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    (a)TG/DTA curves of (Gd1/6Tb1/6Dy1/6Tm1/6Yb1/4Lu1/6)2 Si2O7 and (b) XRD patterns of specimens after being heat-treated at 1800 and 1900 ℃ for 2 h[50]
    7. (a)TG/DTA curves of (Gd1/6Tb1/6Dy1/6Tm1/6Yb1/4Lu1/6)2 Si2O7 and (b) XRD patterns of specimens after being heat-treated at 1800 and 1900 ℃ for 2 h[50]

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    Schematics of the polymorphic transformation temperatures and melting points of RE2Si2O7 disilicates[50]
    8. Schematics of the polymorphic transformation temperatures and melting points of RE2Si2O7 disilicates[50]

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    Luchao SUN, Xiaomin REN, Tiefeng DU, Yixiu LUO, Jie ZHANG, Jingyang WANG. High Entropy Engineering: New Strategy for the Critical Property Optimizations of Rare Earth Silicates[J]. Journal of Inorganic Materials, 2021, 36(4): 339

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    Paper Information

    Category: REVIEW

    Received: Oct. 27, 2020

    Accepted: --

    Published Online: Nov. 24, 2021

    The Author Email: WANG Jingyang (jywang@imr.ac.cn)

    DOI:10.15541/jim20200611

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology