Microstructural aspects during the preparation of Y3Al5O12 by combustion synthesis and temperature field simulation

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  • Song Yuepeng
    Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH) Mechanical and Electronic Engineering College, Shandong Agricultural University
  • Li Jiangtao
    Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
  • Chen Yixiang
    Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
  • Ji Wenwen
    Mechanical and Electronic Engineering College, Shandong Agricultural University
  • Lee Chong Soo
    Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH)
  • Kim Hyoung Seop
    Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH)

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タイトル別名
  • Microstructural Aspects during the Preparation of Y<SUB>3</SUB>Al<SUB>5</SUB>O<SUB>12</SUB> by Combustion Synthesis and Temperature Field Simulation

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The combustion front quenching method (CFQM) combined with the temperature field simulated using the finite element method was used to investigate the microstructural aspects of the fabrication of transparent Y3Al5O12 via combustion synthesis. The simulated results indicate that there are three regions corresponding with the temperature distribution whose microstructural aspects were studied. The composite mixtures of the products cannot be separated depending only on their gravities. The filamentous profile of aluminum along with many aluminous intermediate products are detected by XRD, SEM and EDS analysis in the preheat region, which indicates that the heat-transfer can affect the mass-transfer process and the subsequent reaction process. The microstructural aspects show that the combustion reaction of the Al/NiO/Y2O3 powder mixture was initiated by the melting of Al particles.

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