Y3Al5O12(YAG)-ZrO2 Binary eutectic composites obtained by melt quenching

Jose M. Calderon-Moreno, Masahiro Yoshimura

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11 Citations (Scopus)


We report here the formation and eutectic architecture of Y3Al5O12-ZrO2 eutectic composites obtained using a rapid eutectic solidification method. The preparation of bulk pellets by rapid eutectic quenching in the pseudo-binary system is presented. The phases present in the rapidly quenched composite, cubic yttria stabilized zirconia (YSZ), and yttrium aluminium garnet, Y3Al5O12(YAG), were determined by means of X-ray diffraction (XRD). Mutual substitution of yttria and zirconia in each phase was studied also by Raman spectroscopy. The eutectic morphology of the pseudo-binary eutectic was characterized by scanning electron microscopy (SEM). The eutectic composites showed a rod-like microstructure with eutectic spacings in the sub-micron range and could be obtained in a wide range of compositions along the Y3Al5O12-ZrO2 pseudobinary line of the Al2O3-Y2O3-ZrO2 ternary oxide diagram. Off-eutectic composites containing alumina or yttrium aluminium perovskite and showing a broken eutectic structure were also obtained.

Original languageEnglish
Pages (from-to)1250-1254
Number of pages5
JournalMaterials Science and Engineering A
Issue number1-2 SPEC. ISS.
Publication statusPublished - 2004 Jul

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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