Affiliation:
1. China University of Geosciences
2. Wuhan University of Technology
Abstract
Al2(1-x)MgxTi1+xO5(x=0.05-0.3) composite powder was prepared by the method of chemical coprecipitation
and subsequent sintering using TiCl4, MgCl2 and AlCl3 solution as the raw materials, and
ammonia and ammonium carbonate as the solvent. Thermal dynamics and kinetic dynamics analysis of
the precursor during the heat treatment were explored in detail, and the reaction process of
Al2(1-x)MgxTi1+xO5 (x=0.3) composite powder was confirmed. Results show that, as the temperature
increases MgO reacts with TiO2 of anatase phase to form MgTi2O5. At about 650°C, anatase transfers into
rutile. Then MgTi2O5 reacts with Al2O3 to produce MgAl2O4 at 900°C. When the temperature is above
1100°C, the desired Al2(1-x)MgxTi1+xO5(x=0.3) composite powder is synthesized by the reaction of
MgAl2O4, Al2O3 and TiO2 of rutile phase.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference5 articles.
1. L.M. Zhang, Q. Fang and Q. Shen: J. Chin. Ceram. Soc. Vol. 30 (2002), p.451.
2. V. Buscaglia and P. Nanni: J. Am. Ceram. Soc. Vol. 81(1998), p.2645.
3. D.L. Ye: Practical handbook of mineral thermodynamics data (Metallurgy Industry Press, Beijing 2002).
4. H.X. Yang and R.M. Hazen: J. Solid State Chem. Vol. 138 (1998), p.238.
5. V. Buscaglia, M.A. Delfrate, M. Leoni and C. Bottino: J. Mater. Sci. Vol. 31 (1996), p.1715. Fig. 4 ∆GоT of reactions (8), (14), (15) vs. temperatures.
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