Thermal Shock-Resistance Performance of Al2TiO5/Al2O3 Composites
In the present paper, Al2TiO5-Al2O3 composites with 10, 20, 40, 60, 80, and 90 Vol. % of Al2O3 respectively were prepared by the sintering of Al2TiO5 and Al2O3 powers. The thermal expansion ratio was measured and the quenching-strength method was used to study the thermal shock-resistance performance. The thermal expansion ratio was found to increase from zero for the sample with 10-20Vol.%Al2O3 to that of 0.007% as the content of Al2O3 increased . The results of quenching-strength test showed that the residual strength of Al2TiO5-Al2O3 composites decreased with increasing of Al2O3 content and the thermal shock cycles. The Al2TiO5/Al2O3 composite with 20Vol.% Al2O3 remained a strength of 33.4MPa after three cycles and exhibited good thermal shock-resistance performance.
Takashi Goto, Yibing Cheng, Zhengyi Fu and Lianmeng Zhang
Y. Hu et al., "Thermal Shock-Resistance Performance of Al2TiO5/Al2O3 Composites ", Advanced Materials Research, Vol. 66, pp. 108-111, 2009