Synthesis of high-purity Ti2A1N ceramic by hot pressing

High-purity Ti2A1N ceramic was prepared at 1300 degrees C by hot pressing(HP) of Ti/Al/TiN powders in stoichiometric proportion. The sintered product was characterized using X-ray diffraction(XRD) and MDI Jade 5.0 software (Materials Data Inc, Liverpool, CA). Scanning electron microscopy(SEM) and electron probe micro-analysis(EPMA) coupled with energy-dispersive spectroscopy(EDS) were utilized to investigate the morphology characteristics. The results show that Ti(2)A1N phase is well-developed with a close and lamellar structure. The grains are plate-like with the size of 3-5 mu m, thickness of 8-10 mu m and elongated dimension. 3 The density of Ti(2)A1N is measured to be 4.22 g/cm(3), which reaches 97.9% of its theory value. The distribution of Ti2A1N grains is homogeneous.