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Preparation of acicular particles of α-alumina

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Abstract

Aluminum ammonium sulfate (AA) solution (0.1 mol/l) and ammonium hydrogen carbonate (AHC) solution (1.2 mol/l) were allowed to react at room temperature. The precipitates formed were kept with the mother liquor in a closed vessel and aged at 100 °C. Acicular-shaped crystalline particles of Al(NH4)CO3(OH)2, (AACH), were obtained after the elongated aging period. Acicular α-alumina particles were obtained through the thermal decomposition at 1300 °C out of the AACH particles which were previously treated with a small amount of tetraethoxysilane (about 1.6 wt. % of SiO2

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References

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Authors and Affiliations

  1. Ceramic Science Department, National Industrial Research Institute of Nagoya, 462, Nagoya, Japan

    Takeo Iga & Yoshio Murase

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  1. Takeo Iga
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  2. Yoshio Murase
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Iga, T., Murase, Y. Preparation of acicular particles of α-alumina. Journal of Materials Research 10, 1579–1581 (1995). https://doi.org/10.1557/JMR.1995.1579

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  • DOI: https://doi.org/10.1557/JMR.1995.1579

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