Thermal Shock-Resistance Performance of Al2TiO5/Al2O3 Composites

Yong Hu; Ming Zhong Li; Qiang Shen; Wei Ping Xu

doi:10.4028/www.scientific.net/AMR.66.108

Paper Titles

Erosion Resistance of Al₂TiO₅/Al₂O₃ Composites to Molten Aluminum
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Fabrication of Indium Tin Oxide Targets by Spark Plasma Sintering and Hot-Pressing Sintering
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Superfast Sintering of Nanocrystalline Y₂O₃ Ceramics
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Low-Temperature Sintering and Microwave Dielectric Properties of the Zn₂SiO₄ Ceramics
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Thermal Shock-Resistance Performance of Al₂TiO₅/Al₂O₃ Composites
p.108

Effect of LaCl₃ on the Properties of LAS Ceramics
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Preparation of Fine Mullite Powder in a SHS Chemical Furnace System
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Investigation of Bipolar Resistance Switching Properties in SrTiO₃Thin Films with Symmetric Electrodes Structure
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The Effect of Oxygen Annealing on the Resistance Switching Properties of the La_0.7Ca_0.3MnO₃ Films
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Thermal Shock-Resistance Performance of Al₂TiO₅/Al₂O₃ Composites

Abstract:

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.