Journal of Inorganic Materials, Volume. 36, Issue 10, 1067(2021)

Predicting Thermomechanical Properties of MgAl2O4 Transparent Ceramic Based on Bond Valence Models

Mingxing FENG... Bin WANG, Pengyu XU, Bingtian TU and Hao WANG* |Show fewer author(s)
Author Affiliations
  • State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
  • show less
    Figures & Tables(8)
    (a) Bulk modulus and (b) hardness of MgAl2O4 under various temperatures (experimental data obtained from the literature[19])BT and BM denote the bulk modulus of bonds in tetrahedra and octahedra, respectively; B is the bulk modulus of MgAl2O4 crystal; HT and HM represent the hardness of bonds in tetrahedra and octahedra, respectively; H is the hardness of MgAl2O4 crystal
    Temperature dependence of Young’s modulus of MgAl2O4 (experimental data obtained from literature[16,20])
    Predicted value of the heat capacity of MgAl2O4 (experimental data obtained from literature[22,23,24])
    Comparison of prediction with experimental data (a) of Ghosh, et al[17], (b) Boniecki, et al[18] of the temperature dependent fracture strengths of MgAl2O4
    Comparison of prediction with experimental data of temperature dependent fracture toughnesses of MgAl2O4[16-18,27]
    Temperature dependence of (a) inversion parameter, (b) anion parameter, (c) lattice constant, and (d) averaged bond length for MgAl2O4[12,25,29] RT and RM denote the bond length in tetrahedra and octahedra, respectively (1 Å=0.1 nm)
    Ratio of bond valence to bond length of MgAl2O4 under various temperatures $S _{Ave}^{T}/ R_{T}$ and $ S _{Ave}^{M}/ R_{M}$ represent the ratio of bond valence to bond length in tetrahedra and octahedra, respectively
    • Table 1. Chemical bond properties of MgAl2O4

      View table
      View in Article

      Table 1. Chemical bond properties of MgAl2O4

      Sij/(v.u.) $\frac{\mathrm{d} R}{\mathrm{~d} T} /\left(\times 10^{-7}, \mathrm{~nm} /{ }^{\circ} \mathrm{C}\right)$R0
      [Mg-O]T0.54131.693
      [Al-O]T0.49161.651
      [Mg-O]M0.53141.693
      [Al-O]M0.47171.651
    Tools

    Get Citation

    Copy Citation Text

    Mingxing FENG, Bin WANG, Pengyu XU, Bingtian TU, Hao WANG. Predicting Thermomechanical Properties of MgAl2O4 Transparent Ceramic Based on Bond Valence Models [J]. Journal of Inorganic Materials, 2021, 36(10): 1067

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: RESEARCH ARTICLE

    Received: Jan. 18, 2021

    Accepted: --

    Published Online: Nov. 26, 2021

    The Author Email: WANG Hao (shswangh@whut.edu.cn)

    DOI:10.15541/jim20210034

    Topics