钛酸铝粉料的XRD图谱比较与分析

In this paper aluminum titanate(Al2TiO5 or AT) powders were prepared by ways of solid phase reaction synthesis and liquid phase reaction synthesis in 1300℃、1400℃and 1380℃ respectively. And using these powders we produced aluminum titanate ceramics at high temperature 1550℃，and the microstructure of AT ceramic was tested by SEM method. According to the comparisons of XRD patterns of aluminum titanate powder and AT ceramic we have found that the liquid method is better than the solid method to prepare aluminum titanate powder, and then the powder-synthesized conditions were optimized. The experiment results showed that some different between the XRD pattern of AT powder and Mg2+、Fe2+ adopted AT powder is obvious , especially in the maxim diffraction peak of XRD patterns. In AT XRD pattern ,the maximum strong diffraction peak is located in (101) crystal face and in Mg2+、Fe2+ adopted AT XRD pattern the maximum strong diffraction peak is changed in (230) crystal face, so we deduced that the sites replacement of adopted ions are selective .