Synthesis and characterization of submicrometer monosized ceramic powders of Aluminium titanate-Mullite composite by sol-gel process
by I.J. Kim, C . Zografou, W. Kronert
International Journal of Materials and Product Technology (IJMPT), Vol. 8, No. 2/3/4, 1993

Abstract: Submicrometer, monosized ceramic powders of Al₂Ti0₅ Mullite and Aluminium titanate-Mullite compositions were prepared by stepwise alkoxide hydrolysis of tetraethylorthosilicate and titaniumtetraethoxide in A1₂O₃ ethanolic solutions. All particles produced by sol-gel-process were amorphous, monodispersed and with a narrow particle-size distribution. Compacts fired above 1300°C formed Aluminium titanate. Mullite formed first at 1480°C. After decomposition test at 1100°C and cyclic decomposition test at 750°C-1400°C-750°C for 100 hours, Aluminium titanate was stabilized 80% by composition with Mullite.

Online publication date: Thu, 04-Nov-2010

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