PREPARATION OF ALUMINA FIBERS FROM ALUMINUM SALTS BY THE SOL-GEL METHOD

Song KC; Woo KJ; Kang Y

Korean Journal of Chemical Engineering, Vol.16, No.1, 75-81, January, 1999

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℃, while the TGA curve of the aluminum nictate system showed no weight loss above 400℃, which indicates that thermal decomposition of Cl^- is more difficult than that of NO₃^-.

Keywords:Alumina Fibers;Sol-Gel Method;Aluminum Salts;Spinnability

[References]

Bellamy LJ, "The Infrared Spectra of Complex Molecules," Chapman Hall, London (1975)
Bitchall JD, Trans. J. Br. Ceram. Soc., 82, 143 (1983)
Dhingra AK, Phil. Trans. R. Soc., A294, 411 (1980)
Gadsden JA, "Infrared Spectra of Minerals and Related Inorganic Compounds," Butterworths Readings, Mass. (1975)
Gimblett FGR, "Inorganic Polymer Chemistry," Butterworths Readings, London (1963)
Hench LL, Ulrich DR, 'Ultrastructure Processing of Ceramics, Glasses and Composites," John Wiley & Sons, New York (1984)
Li DX, Thomson WJ, J. Am. Ceram. Soc., 73, 964 (1990)
Maki T, Sakka S, J. Non-Cryst. Solids, 100, 303 (1988)
Maki T, Sakka S, J. Mater. Sci. Lett., 5, 28 (1986)
Sacks MD, Tseng TY, Lee SY, Ceram. Bull., 63, 301 (1984)
Song KC, Chung IJ, J. Non-Cryst. Solids, 107, 193 (1989)
Song KC, Chung IJ, J. Non-Cryst. Solids, 108, 37 (1989)
Song KC, Shim CS, Kang Y, Hong WG, HWAHAK KONGHAK, 35(1), 35 (1997)
Yogo T, Iwahara H, J. Mater. Sci., 27, 1499 (1992)

[Referenced By]

[1] Bellamy LJ, "The Infrared Spectra of Complex Molecules," Chapman Hall, London (1975)

[2] Bitchall JD, Trans. J. Br. Ceram. Soc., 82, 143 (1983)

[3] Dhingra AK, Phil. Trans. R. Soc., A294, 411 (1980)

[4] Gadsden JA, "Infrared Spectra of Minerals and Related Inorganic Compounds," Butterworths Readings, Mass. (1975)

[5] Gimblett FGR, "Inorganic Polymer Chemistry," Butterworths Readings, London (1963)

[6] Hench LL, Ulrich DR, 'Ultrastructure Processing of Ceramics, Glasses and Composites," John Wiley & Sons, New York (1984)

[7] Li DX, Thomson WJ, J. Am. Ceram. Soc., 73, 964 (1990)

[8] Maki T, Sakka S, J. Non-Cryst. Solids, 100, 303 (1988)

[9] Maki T, Sakka S, J. Mater. Sci. Lett., 5, 28 (1986)

[10] Sacks MD, Tseng TY, Lee SY, Ceram. Bull., 63, 301 (1984)

[11] Song KC, Chung IJ, J. Non-Cryst. Solids, 107, 193 (1989)

[12] Song KC, Chung IJ, J. Non-Cryst. Solids, 108, 37 (1989)

[13] Song KC, Shim CS, Kang Y, Hong WG, HWAHAK KONGHAK, 35(1), 35 (1997)

[14] Yogo T, Iwahara H, J. Mater. Sci., 27, 1499 (1992)