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Powder Modification Technology and Preparation of MgAl2O4 Transparent Ceramics by Hot Pressing
L. Guo1, Y. Zhao1, S. Xu2, H. Shi1, A. Zheng1, Y. Ma1
1 GRINM Guojing Advanced Materials Co., Ltd., General Research Institute for Nonferrous Metals, Langfang 065001, PR China.
2 Zhengzhou University, Zhengzhou 450000, PR China.
received June 12, 2022, received in revised form September 5, 2022, accepted October 17, 2022
Vol. 13, No. 2, Pages 113-120 DOI: 10.4416/JCST2022-00007
Abstract
Hot-pressed MgAl2O4 transparent ceramics were successfully prepared based on powder modification technology using commercial MgAl2O4 powder. With a 2-wt% polyvinyl alcohol (PVA) addition and the powder modification treatment, the average particle size of the powder is 70 – 150 nm, the specific surface area is 32.16 m2/g, and the median diameter (D (50)) is 7.2730 μm. Concluding the research about the effect of LiF on the properties of hot-pressed MgAl2O4 ceramics prepared based on powder modification technology, hot-press sintering proceeded well with a doping of 2 wt% PVA and 1 wt% LiF, and the mean maximum transmittance within the wave length range of 400 – 800 nm and 3 – 5 μm is 73.48 % and 83.09 % respectively, and the average grain size is 20 – 40 μm. XRD (X-ray diffraction) and ICP (Inductively Coupled Plasma) analysis of hot-pressed MgAl2O4 transparent ceramics indicate that the Li elements in hot-pressed transparent ceramics did not escape completely, but may exist as LiAlO2.
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Keywords
Powder modification technology, powder characterization, MgAl2O4 transparent ceramics, optical properties, hot pressing
References
1 Huaizhi, Y.: Infrared optical materials, Second Edition [M] Beijing: National Defense Industry Press, 72 – 73, (2015).
2 Shi, Z., Zhao, Q., Guo, B., et al.: A review on processing polycrystalline magnesium aluminate spinel (MgAl2O4): Sintering techniques, material properties and machinability, Mater. Design, 193:108858(2020). doi: https://doi.org/10.1016/j.matdes.2020.108858.
3 Harris, D.C.: History of development of polycrystalline optical spinel in the U.S., Proc. SPIE – Int. Soc. Opt. Eng., 1 – 22, (2005). doi: https://doi.org/10.1117/12.609708.
4 Sepulveda, J.L., Loutfy, R.O., Ibrahim, S., et al.: Large-size spinel windows and domes[C]//Window & Dome Technologies & Materials XIII, Int. Soc. Opt. Photon., 2013. doi: https://doi.org/10.1117/12.2016442.
5 Mroz, T.J., Hartnett, T.M., Wahl, J.M., et al.: Recent advances in spinel optical ceramic, Proc Spie, 5786, (2005). doi: https://doi.org/10.1117/12.607593.
6 Gilde, G., Patel, P., Sands, J., Patterson, P., et al.: Evaluation of hot isostatic pressing parameters on the optical and ballistic properties of spinel for transparent armor, J. Am. Ceram. Soc., 88, [10], 2747 – 51, (2006).
7 Rubat du Merac, M., Kleebe, H.J., Müller, M.M., Reimanis, I.E.: Fifty years of research and development coming to fruition; Unraveling the complex interactions during processing of transparent magnesium aluminate (MgAl2O4) spinel, J. Am. Ceram. Soc., 96, 3341 – 3365, (2013). doi: https://doi.org/10.1111/jace.12637.
8 Baudin, C., Pena, P.: Influence of stoichiometry on fracture behavior of magnesium aluminate spinels at 1 200 °C, J. Eur. Ceram. Soc., 17, 1501 – 11 (1997).
9 Jiang, L.P., Jiang, X. et al.: Multiobjective machine learning-assisted discovery of a novel cyan-green garnet: Ce phosphors with excellent thermal stability, ACS Appl. Mater. Inter., 14, [13], 15426 – 15436, (2022). doi: https://doi.org/10.1021/acsami.2c02698.
10 Bratton, R.J.: Translucent sintered MgAl2O4, J. Am. Ceram. Soc., 57, [7], 283 – 6, (1974). doi: https://doi.org/10.1111/j.1151 – 2916.1974.tb10901.x.
11 Hing, P.: Fabrication of Translucent Magnesium aluminate spinel and its compatibility in sodium vapour, J. Mater. Sci., 11, 1919 – 26, (1976). doi: https://doi.org/10.1007/BF00708270.
12 Benameur, N., Bernard-Granger, G., et al.: Sintering analysis of a fine-grained alumina-magnesia spinel powder, J. Am. Ceram. Soc., 94, [5], 1388 – 96 (2011). doi: https://doi.org/10.1111/j.1551 – 2916.2010.04271.x.
13 Morita, K., Kim, B.-N., Hiraga, K., Yoshida, H.: Fabrication of transparent MgAl2O4 spinel polycrystal by spark plasma sintering process, Scripta Mater., 58, 1114 – 7, (2008). doi: https://doi.org/10.1016/j.scriptamat.2008.02.008
14 Meir, S., Kalabukhov, S., et al.: Synthesis and densification of transparent magnesium aluminate spinel by sps processing, J. Am. Ceram. Soc., 2, 358 – 64, (2009). doi: https://doi.org/10.1111/j.1551 – 2916.2008.02893.x
15 Bonnefont, G., Fantozzi, G., et al.: Fine-grained transparent MgAl2O4 spinel obtained by spark plasma sintering of commercially available nanopowders, Ceram. Int., 38, 131 – 41, (2012). doi: https://doi.org/10.1016/j.ceramint.2011.06.045.
16 Liu, G., Li, J., Yang, Z.: Melt-casting of translucent MgAl2O4 ceramics by combustion synthesis under high gravity, Mater. Manuf. Process., 27, [6], 689 – 93, (2012). doi: https://doi.org/10.1080/10426914.2011.593250.
17 Mazzoni, A.D., Sainz, M.A., et al.: Formation and sintering of spinels (MgAl2O4) in reducing atmospheres, Mater. Chem. Phys., 78, 30 – 7, (2002). doi: https://doi.org/10.1016/S0254 – 0584(02)00333 – 4.
18 Esposito, L., et al.: Production and characterization of transparent MgAl2O4 prepared by hot pressing, J. Eur. Ceram. Soc., 33, 737 – 47, (2013). doi: https://doi.org/10.1016/j.jeurceramsoc.2012.10.013.
19 Lei, M-Y., Huang, C.-X., Sun, J.-L.: Effect of HIP on the properties and microstructure of transparent polycrystalline spinel, Key Eng. Mat., 336 – 338, 1200 – 2 (2007).
20 Villalobos, G.R., Sanghera, J.S., Aggarwal, I.D.: Degradation of magnesium aluminum spinel by lithium fluoride sintering aid, J. Am. Ceram. Soc., 88, [5], 1321 – 1322, (2010). doi: https://doi.org/10.1111/j.1551 – 2916.2005.00209.x.
21 Liu, Q., Jing, Y., Su, S., et al.: Microstructure and properties of MgAl2O4 transparent ceramics fabricated by hot isostatic pressing, Opt. Mater., 104, (2020). doi: https://doi.org/10.1016/j.optmat.2020.109938
22 Alhaji, A., Taherian, M.H., Ghorbani, S., et al.: Development of synthesis and granulation process of MgAl2O4 powder for the fabrication of transparent ceramic, Opt. Mater., 98:109440(2019). doi: https://doi.org/10.1016/j.optmat.2019.109440.
23 Zhou, Y., Ye, D., Wu, Y. et al.: Low-cost preparation and characterization of MgAl2O4 ceramics, Ceram. Int., 48, [5], 7316 – 7319, (2022). doi: https://doi.org/10.1016/j.ceramint.2021.11.196.
24 Fa Hui, L.I., Lin, H., Junfeng L.I., et al.: Influence of LiF on the infrared transmissivity of magnesia alumina spinel transparent ceramics, J. Inorg. Mater., 27, [4] 417 – 421, (2012). doi: https://doi.org/10.3724/SP.J.1077.2012.00417
25 Rozenburg, K., Reimanis, I.E., Kleebe, H.J., et al.: Chemical interaction between LiF and MgAl2O4 spinel during sintering, J. Am. Ceram. Soc., 90, [7], 2038 – 2042, (2007). doi: https://doi.org/10.1111/j.1551 – 2916.2007.01723.x
26 Sutorik, A.C., Gilde, G., Cooper, C., Wright, J., Hilton, C.: The effect of varied amounts of lif sintering aid on the transparency of alumina rich spinel ceramic with the composition MgO-1.5Al2O3, J. Am. Ceram. Soc., 95, [6], 1807 – 10, (2012). doi: https://doi.org/10.1111/j.1551 – 2916.2012.05217.x
27 Belov, S.F., Adaeva, T.I., Rozdin, I.A., Varfolomeev, M.B.: Reaction of Al2O3 with LiF, Refractories, 26, 1675 – 6, (1985).
28 Li, X.Y., Liu, Q., Hu, Z.W., Jiang, N., Shi, Y., Li, J.: Influence of ammonium hydrogen carbonate to metal ions molar ratio on co-precipitated nanopowders for TGG transparent ceramics, J. Inorg. Mater., 34, 791 – 796, (2019). doi: https://doi.org/10.15541/jim20180574.
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