Strength of aluminium titanate/mullite composites containing thermal stabilizers

被引:35
作者
Perera, Fidel H. [2 ]
Pajares, Antonia [2 ]
Melendez, Juan J. [1 ]
机构
[1] Univ Extremadura, Dept Fis, Badajoz 06006, Spain
[2] Univ Extremadura, Dept Ingn Mecan Energet & Mat, Badajoz 06006, Spain
关键词
Al2TiO5; Mullite; Mechanical properties; Strength; Additives; MULLITE COMPOSITES; EXPANSION ANISOTROPY; GRAIN-BOUNDARIES; SOLID-SOLUTIONS; CERAMICS; MICROSTRUCTURE; ADDITIVES; POWDERS; OXIDES; MICROCRACKING;
D O I
10.1016/j.jeurceramsoc.2011.03.012
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
This work contains a study on the room temperature-fracture strength of three aluminium titanate-based materials containing mullite and different thermal stabilizers (namely Fe2O3 and MgO). The highest inert strength was reached by the material sintered without any stabilizer. The MgO-doped material had a comparable inert strength, but a significantly higher Weibull modulus. Finally, the Fe2O3-doped material showed the worst mechanical properties. In all cases, a critical load above which strength degraded was apparent. These behaviours have been analyzed in terms of the type of additives and the particular microstructures. Conclusions about the potential use of these materials are briefly stated. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1695 / 1701
页数:7
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