Synthesis of high-purity Ti_2AlN ceramic by hot pressing  

作　　者：严明 陈艳林 梅炳初 朱教群 

机构地区：[1]College of Chemistry and Environmental Engineering,Hubei University of Technology [2]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology

出　　处：《中国有色金属学会会刊：英文版》2008年第1期82-85,共4页Transactions of Nonferrous Metals Society of China

基　　金：Project(50572080)supported by the National Natural Science Foundation of China;Project(SYSJJ2005-04)supported by the Open Foundation of Key Laboratory of Silicate Materials Science and Engineering(Wuhan University of Technology),Ministry of Education

摘　　要：High-purity Ti2AlN ceramic was prepared at 1300 ℃ 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 Ti2AlN phase is well-developed with a close and lamellar structure.The grains are plate-like with the size of 3-5 μm,thickness of 8-10 μm and elongated dimension.The density of Ti2AlN is measured to be 4.22 g/cm3,which reaches 97.9% of its theory value.The distribution of Ti2AlN grains is homogeneous.High-purity Ti2AIN ceramic was prepared at 1300℃ by hot pressing（HP） of Ti/Ai/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 Ti2AIN phase is well-developed with a close and lamellar structure. The grains are plate-like with the size of 3-5 μm, thickness of 8-10 μm and elongated dimension. The density of Ti2AlN is measured to be 4.22 g/cm^3, which reaches 97.9% of its theory value. The distribution of Ti2AlN grains is homogeneous.

关 键 词：Ti2AlN 合成方法 热压制 烧结方法 

分 类 号：TF124.3[冶金工程—粉末冶金]