Abstract
β″-Al2O3 was prepared at 1280 ℃ using α-Al2O3, γ-Al2O3, and boehmite as alumina precursors and NaHCO3 as sodium oxide source. The effect of different alumina precursors and amounts of NaHCO3 on β″-Al2O3 formation behavior were studied. The phase composition and microstructure of the as-prepared β″-Al2O3 were analyzed, respectively, by X-ray diffraction and scanning electron microscopy. β″-Al2O3 co-existing with NaAlO2 and α-Al2O3 was obtained when using α-Al2O3 and γ-Al2O3, whereas phase-pure β″-Al2O3 was prepared by calcining the mixture of boehmite and 22 wt% of NaHCO3. The phase-pure β″-Al2O3 particles did not agglomerate and showed a sheet-like morphology with a thickness of about 1 μm.
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© 2023 The Minerals, Metals & Materials Society
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Che, H., Zhang, Y. (2023). Effects of Different Precursors on the Preparation of β″-Al2O3. In: Broek, S. (eds) Light Metals 2023. TMS 2023. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-22532-1_27
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DOI: https://doi.org/10.1007/978-3-031-22532-1_27
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