IR-transparent MgO-Gd2O3 composite ceramics produced by self-propagating high-temperature synthesis and spark plasma sintering


A glycine-nitrate self-propagating high-temperature synthesis (SHS) was developed to produce composite MgO-Gd2O3 nanopowders. The X-ray powder diffraction (XRD) analysis confirmed the SHS-product consists of cubic MgO and Gd2O3 phases with nanometer crystallite size and retains this structure after annealing at temperatures up to 1200 °C. Near full dense high IR-transparent composite ceramics were fabricated by spark plasma sintering (SPS) at 1140 °C and 60 MPa. The in-line transmittance of 1 mm thick MgO-Gd2O3 ceramics exceeded 70% in the range of 4–5 mm and reached a maximum of 77% at a wavelength of 5.3 mm. The measured microhardness HV0.5 of the MgO-Gd2O3 ceramics is 9.5±0.4 GPa, while the fracture toughness (KIC) amounted to 2.0±0.5 MPa·m1/2. These characteristics demonstrate that obtained composite MgO-Gd2O3 ceramic is a promising material for protective infra-red (IR) windows.


  1. [1]

    Xie JX, Mao XJ, Zhu QQ, et al. Influence of synthesis conditions on the properties of Y2O3-MgO nanopowders and sintered nanocomposites. J Eur Ceram Soc 2017, 37: 4095–4101.

    CAS  Article  Google Scholar 

  2. [2]

    Harris DC, Cambrea LR, Johnson LF, et al. Properties of an infrared-transparent MgO:Y2O3 nanocomposite. J Am Ceram Soc 2013, 96: 3828–3835.

    CAS  Article  Google Scholar 

  3. [3]

    Jiang DT, Mukherjee AK. Spark plasma sintering of an infrared-transparent Y2O3-MgO nanocomposite. J Am Ceram Soc 2010, 93: 769–773.

    CAS  Article  Google Scholar 

  4. [4]

    Ma HJ, Jung WK, Baek C, et al. Influence of microstructure control on optical and mechanical properties of infrared transparent Y2O3-MgO nanocomposite. J Eur Ceram Soc 2017, 37: 4902–4911.

    CAS  Article  Google Scholar 

  5. [5]

    Stefanik T, Gentilman R, Hogan P. Nano-composite optical ceramics for infrared windows and domes. Proc SPIE 2007, 6545: 65450A.

    Article  Google Scholar 

  6. [6]

    Yong SM, Choi DH, Lee K, et al. Study on carbon contamination and carboxylate group formation in Y2O3-MgO nanocomposites fabricated by spark plasma sintering. J Eur Ceram Soc 2020, 40: 847–851.

    CAS  Article  Google Scholar 

  7. [7]

    Wang JW, Zhang LC, Chen DY, et al. Y2O3-MgO-ZrO2 infrared transparent ceramic nanocomposites. J Am Ceram Soc 2012, 95: 1033–1037.

    CAS  Google Scholar 

  8. [8]

    Information on

  9. [9]

    Wu N, Li XD, Li JG, et al. Fabrication of Gd2O3-MgO nanocomposite optical ceramics with varied crystallographic modifications of Gd2O3 constituent. J Am Ceram Soc 2018, 101: 4887–4891.

    CAS  Article  Google Scholar 

  10. [10]

    Safronova NA, Kryzhanovska OS, Dobrotvorska MV, et al. Influence of sintering temperature on structural and optical properties of Y2O3-MgO composite SPS ceramics. Ceram Int 2020, 46: 6537–6543.

    CAS  Article  Google Scholar 

  11. [11]

    Permin DA, Boldin MS, Belyaev AV, et al. IR-transparent MgO-Y2O3 ceramics by self-propagating high-temperature synthesis and spark plasma sintering. Ceram Int 2020, 46: 15786–15792.

    CAS  Article  Google Scholar 

  12. [12]

    Kryzhanovska OS, Safronova NA, Balabanov AE, et al. Y2O3-MgO highly-sinterable nanopowders for transparent composite ceramics. Funct Mater 2019, 26: 829–837.

    CAS  Google Scholar 

  13. [13]

    Xie JX, Mao XJ, Li XK, et al. Influence of moisture absorption on the synthesis and properties of Y2O3-MgO nanocomposites. Ceram Int 2017, 43: 40–44.

    Article  Google Scholar 

  14. [14]

    Yong SM, Choi DH, Lee K, et al. Influence of the calcination temperature on the optical and mechanical properties of Y2O3-MgO nanocomposite. Arch Metall Mater 2018, 63: 1481–1484.

    CAS  Google Scholar 

  15. [15]

    Liu LH, Morita K, Suzuki TS, et al. Evolution of microstructure, mechanical, and optical properties of Y2O3-MgO nanocomposites fabricated by high pressure spark plasma sintering. J Eur Ceram Soc 2020, 40: 4547–4555.

    CAS  Article  Google Scholar 

  16. [16]

    Liu LH, Morita K, Suzuki TS, et al. Synthesis of highly-infrared transparent Y2O3-MgO nanocomposites by colloidal technique and SPS. Ceram Int 2020, 46: 13669–13676.

    CAS  Article  Google Scholar 

  17. [17]

    Özdemir H, Faruk Öksüzömer MA. Synthesis of Al2O3, MgO and MgAl2O4 by solution combustion method and investigation of performances in partial oxidation of methane. Powder Technol 2020, 359: 107–117.

    Article  Google Scholar 

  18. [18]

    Orante-Barrón VR, Oliveira LC, Kelly JB, et al. Luminescence properties of MgO produced by solution combustion synthesis and doped with lanthanides and Li. J Lumin 2011, 131: 1058–1065.

    Article  Google Scholar 

  19. [19]

    Permin DA, Balabanov SS, Snetkov IL, et al. Hot pressing of Yb: Sc2O3 laser ceramics with LiF sintering aid. Opt Mater 2020, 100: 109701.

  20. [20]

    Balabanov SS, Permin DA, Rostokina EY, et al. Sinterability of nanopowders of terbia solid solutions with scandia, yttria, and lutetia. J Adv Ceram 2018, 7: 362–369.

    CAS  Article  Google Scholar 

  21. [21]

    Permin DA, Kurashkin SV, Novikova AV, et al. Synthesis and luminescence properties of Yb-doped Y2O3, Sc2O3 and Lu2O3 solid solutions nanopowders. Opt Mater 2018, 77: 240–245.

    CAS  Article  Google Scholar 

  22. [22]

    Coelho AA. Whole-profile structure solution from powder diffraction data using simulated annealing. J Appl Cryst 2000, 33: 899–908.

    CAS  Article  Google Scholar 

  23. [23]

    Chuvil’deev VN, Boldin MS, Dyatlova YG, et al. Comparative study of hot pressing and high-speed electropulse plasma sintering of Al2O3/ZrO2/Ti(C,N) powders. Russ J Inorg Chem 2015, 60: 987–993.

    Article  Google Scholar 

  24. [24]

    Lawn B. Fracture of Brittle Solids. 2nd edn. Cambridge: Cambridge University press, 1993.

    Google Scholar 

  25. [25]

    Warlimont H. Ceramics. In Springer Handbook of Condensed Matter and Materials Data. Martienssen W, Warlimont H, Eds. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005: 431–476.

  26. [26]

    Information on

  27. [27]

    Information on

  28. [28]

    Zinkevich M. Thermodynamics of rare earth sesquioxides. Prog Mater Sci 2007, 52: 597–647.

    CAS  Article  Google Scholar 

  29. [29]

    Rhodes WH. Controlled transient solid second-phase sintering of yttria. J Am Ceram Soc 1981, 64: 13–19.

    CAS  Article  Google Scholar 

  30. [30]

    Zhang FX, Lang M, Wang JW, et al. Structural phase transitions of cubic Gd2O3 at high pressures. Phys Rev B 2008, 78: 064114.

  31. [31]

    Aksel C, Riley FL. Magnesia-spinel (MgAl2O4) refractory ceramic composites. In Ceramic-Matrix Composites. Microstructure, Properties and Applications. Cambridge: Woodhead Publishing Limited, 2006: 359–399.

    Google Scholar 

  32. [32]

    Ma HJ, Kong JH, Kim DK. Insight into the scavenger effect of LiF on extinction of a carboxylate group for mid-infrared transparent Y2O3-MgO nanocomposite. Scripta Mater 2020, 187: 37–42.

    CAS  Article  Google Scholar 

  33. [33]

    Wang CJ, Huang CY, Wu YC. Two-step sintering of fine alumina-zirconia ceramics. Ceram Int 2009, 35: 1467–1472.

    CAS  Article  Google Scholar 

  34. [34]

    Madhav Reddy K, Kumar N, Basu B. Innovative multistage spark plasma sintering to obtain strong and tough ultrafine-grained ceramics. Scripta Mater 2010, 62: 435–438.

    CAS  Article  Google Scholar 

  35. [35]

    Kim BN, Hiraga K, Grasso S, et al. High-pressure spark plasma sintering of MgO-doped transparent alumina. J Ceram Soc Japan 2012, 120: 116–118.

    CAS  Article  Google Scholar 

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The study was funded by the Russian Science Foundation (Research Project No. 19-73-10127). The IR spectral studies were performed on the equipment of the Analytical Centre of the G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences.

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Correspondence to Dmitry A. Permin.

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Permin, D.A., Boldin, M.S., Belyaev, A.V. et al. IR-transparent MgO-Gd2O3 composite ceramics produced by self-propagating high-temperature synthesis and spark plasma sintering. J Adv Ceram (2021).

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  • MgO-Gd2O3
  • self-propagating high-temperature synthesis (SHS)
  • spark plasma sintering (SPS)
  • optical properties
  • infra-red (IR) ceramics