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 NJGC  Vol.3 No.4 , October 2013
Decomposition Free Al2TiO5-MgTi2O5 Ceramics with Low-Thermal Expansion Coefficient
Abstract: Solid solutions of (1 - x)Al2TiO5-xMgTi2O5 (x = 0 - 1) doped with alkaline feldspar were prepared. Thermal decomposition largely depends on the feldspar doping as same as the x value. It was found that decomposition free ceramics over 500 hours of heat treatment at 1100°C in an ambient atmosphere could be obtained for the feldspar-doped ceramics at x > 0.5 with a fracture strength of 33 - 40 MPa and coefficient of thermal expansion of 2.4 - 4.1 ×10-6K-1. A partial decomposition was observed for a compositional range of around x = 0.75. Both composition of the solid solution and an addition of the alkaline feldspar contributed synergistically to improve such thermal and mechanical properties. The decomposition free Al2TiO5-MgTi2O5 ceramics is expected for variety of high temperature applications including diesel particulate filters.
Cite this paper: M. Fukuda, T. Yoko and M. Takahashi, "Decomposition Free Al2TiO5-MgTi2O5 Ceramics with Low-Thermal Expansion Coefficient," New Journal of Glass and Ceramics, Vol. 3 No. 4, 2013, pp. 111-115. doi: 10.4236/njgc.2013.34018.
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