Journal of Inorganic Materials, Volume. 36, Issue 6, 652(2021)

Directionally Solidified Al2O3/Er3Al5O12 and Al2O3/Yb3Al5O12 Eutectic Ceramics Prepared by Optical Floating Zone Melting

Luchao SUN1... Cui ZHOU1,2, Tiefeng DU1, Zhen WU1, Yiming LEI1,2, Jialin LI1, Haijun SU3,* and Jingyang WANG1,* |Show fewer author(s)
Author Affiliations
  • 11. Shenyang National Laboratory for Materials Science, 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, Shenyang 110016, China
  • 33. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
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    Figures & Tables(9)
    Optical micrographs of the directionally solidified eutectics(a) Al2O3/ErAG; (b) Al2O3/YbAG
    XRD patterns of the directionally solidified eutectics(a) Al2O3/ErAG; (b) Al2O3/YbAG
    SEM morphologies of the transverse section of directionally solidified eutectics(a) Al2O3/ErAG; (b) Al2O3/YbAG
    EBSD maps and corresponding inverse pole figures (inserts) of Al2O3/ErAG ((a) Al2O3 and (b) ErAG) and Al2O3/YbAG ((c) Al2O3 and (d) YbAG)
    Pole figures of Al2O3/ErAG: (a) Al2O3 in {0001} orientation and (b) ErAG in {211} orientation corresponding to the inverse pole figures in Fig. 4 (a) and (b)
    3D-XRT images of directionally solidified (a) Al2O3/ErAG and (d) Al2O3/YbAG eutectics, (b, c) spatial distribution of ErAG and Al2O3 in Al2O3/ErAG, (e, f) spatial distribution of YbAG and Al2O3 in Al2O3/YbAG
    Vickers hardness and fracture toughness of directionally solidified eutectics for Al2O3/ErAG and Al2O3/YbAG
    • Table 1.

      Growth directions and orientation relationships of some eutectic ceramics

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      Table 1.

      Growth directions and orientation relationships of some eutectic ceramics

      Eutectic systemGrowth methodGrowth directionsOrientation relationships
      Al2O3/ErAGOFZ<$10\bar{1}0$> Al2O3//<111> ErAG{0001} Al2O3//{211} ErAG
      Al2O3/REAGOFZ<$10\bar{1}0$> Al2O3//<101> REAG{0001} Al2O3//{211} REAG
      RE=Er/Yb[24]<$10\bar{1}0$> Al2O3//<$2\bar{1}0$> REAG
      Al2O3/YAG[25]OFZ<$10\bar{1}0$> Al2O3//<101> YAG{0001} Al2O3//{211} YAG
      Al2O3/YAG[26]LFZ<$1\bar{1}00$> Al2O3//<111> YAG{0001} Al2O3//{$1\bar{1}2$} YAG
      Al2O3/YAG[27]Bridgman<$1\bar{1}20$> Al2O3//<110> YAG-
      <$01\bar{1}0$> Al2O3//<110> YAG
      Al2O3/YAG[28]LSP<$10\bar{1}0$> Al2O3//<101> YAG{0001} Al2O3//{211} YAG
    • Table 2.

      Comparison of Vickers hardness and fracture toughness of some Al2O3/REAG eutectic ceramics

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      Table 2.

      Comparison of Vickers hardness and fracture toughness of some Al2O3/REAG eutectic ceramics

      Eutectic systemPreparation methodVickers hardness /GPaFracture toughness /(MPa·m1/2)
      Al2O3/ErAGOFZ(13.5±0.4)(3.0 ± 0.2)
      Al2O3/YbAGOFZ(12.8±0.1)(3.2 ± 0.1)
      Al2O3/ErAG[9]LFZ(14.5-16.0)1.9
      Al2O3/ErAG[19]LFZ(14.9±0.7)(1.8 ± 0.3)
      Al2O3/YbAG[19]LFZ(14.8±0.6)(2.2 ± 0.5)
      Al2O3/YAG[24]OFZ13.5(3.1±0.3)
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    Luchao SUN, Cui ZHOU, Tiefeng DU, Zhen WU, Yiming LEI, Jialin LI, Haijun SU, Jingyang WANG. Directionally Solidified Al2O3/Er3Al5O12 and Al2O3/Yb3Al5O12 Eutectic Ceramics Prepared by Optical Floating Zone Melting[J]. Journal of Inorganic Materials, 2021, 36(6): 652

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    Paper Information

    Category: RESEARCH LETTER

    Received: Sep. 1, 2020

    Accepted: --

    Published Online: Nov. 25, 2021

    The Author Email: SU Haijun (shjnpu@nwpu.edu.cn), WANG Jingyang (jywang@imr.ac.cn)

    DOI:10.15541/jim20200508

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