Abstract
Alumina fibers were synthesized from two different systems, AlCl3-Al powder-H2O and Al(NO3)3-Al powder-H2O, by the sol-gel method. For the former system, gel fibers were obtained from solutions in a composition range of Al powder/AlCl3 molar ratios of 2 to 5. For the latter system, the spinnable range was narrower compared to the aluminum chloride system. The thermogravimetry analysis (TGA) curve of the aluminum chloride system showed a weight loss up to 700‡C while the TGA curve of the aluminum nitrate system showed no weight loss above 400‡C, which indicates that thermal decomposition of Cl- is more difficult than that of NOgk-/3.
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Song, KC., Woo, KJ. & Kang, Y. Preparation of alumina fibers from aluminum salts by the sol-gel method. Korean J. Chem. Eng. 16, 75–81 (1999). https://doi.org/10.1007/BF02699008
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DOI: https://doi.org/10.1007/BF02699008